Avaya Configuring IP Utilities User's Manual
Contents
1.2. continued 117358 A Rev A D 3 Configuring IP Utilities Site Manager Procedure continued You do this System responds 3 Select Global The Edit IP Global Parameters window opens 4 Set the IP Accounting Checkpoint Flag parameter as desired Click on Help or see the parameter description on page A 30 5 Click on OK Site Manager returns you to the Configuration Manager window IP Accounting maintains two aging counters one for the accounting table and one for the checkpoint table When you copy the contents IP Accounting resets and starts both counters at 0 D 4 117358 A Rev A Numbers 15 Character NetBIOS Name Caching parameter 8 4 A 22 A Acknowledgment with retransmission 2 3 adding NetBIOS over IP to an interface 1 23 Bay Networks Press xx BGP parameters global BGP Identifier A 4 A 5 A 6 A 16 A 17 A 18 A 19 Cc caching 2 3 checksums 2 3 clients 2 4 Close Time Out parameter A 8 Command Timeout parameter A 12 connections 2 4 Create MIB Inst for Cached Name parameter 8 5 A 23 customer support programs xx Technical Solutions Centers xxi D Default Volume parameter A 7 117358 A Rev A Index defaults NetBIOS over IP parameters B 5 SNMP parameters B 5 B 6 disabling inbound and outbound broadcasts for NetBIOS over IP 8 11 name caching for NetBIOS over IP 8 10 NetBIOS over IP 1 24 8 9 static name caching fo
3. parameters Table B 9 NetBIOS IP Interface Table Parameters Parameter Default Enable Disable Disable NetBIOS Name Caching Enable Enable NetBIOS Inbound Enable Broadcasts Enable NetBIOS Outbound Enable Broadcasts Rebroadcast Address Null 117358 A Rev A B 5 Configuring IP Utilities Table B 10 lists the Site Manager default settings for NetBIOS IP static entry table parameters Table B 10 NetBIOS IP Static Entry Table Parameters Parameter Default Enable Enable NetBIOS Scope ID None NetBIOS Station Name None NetBIOS Scope ID None IP Accounting Parameters Table B 11 lists the Site Manager default parameter settings for IP Accounting Table B 11 IP Accounting Parameters Parameter Default Enable Enable Threshold 512 entries Trap Percent 80 percent IP Accounting Checkpoint Flag 0 B 6 117358 A Rev A Appendix C Configuring IP Global Access Policies The BCC allows you to create global IP access policies that permit or deny access to specific IP services These services include Telnet FTP TFTP NTP and SNMP You define an access policy by setting parameters as described under the following topics Topic Page Creating and Naming the Policy C 2 Specifying the Network to Which the Policy Applies C 2 Disabling and Reenabling a Policy G3 Specifying the Policy Action C 3 D
4. 3 Click on OK You return to the Configuration Manager window Using the BCC To start IP on the router 1 Configure a physical interface on an available slot connector 2 Configure an IP interface on the physical interface 1 6 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Step 1 Configuring a Physical Interface To configure a physical interface on a slot and connector navigate to the top level box prompt and enter interface_type slot slot_number connector connector_number interface_type is the name of a link module on the router slot_number is the number of the slot on which the link module is located connector_number is the number of a connector on the link module For example the following command configures an Ethernet interface on slot 2 connector 2 box ethernet slot 2 connector 2 ethernet 2 2 Step 2 Configuring an IP Interface To configure an IP interface on a physical interface navigate to the prompt for the physical interface and enter ip address address mask mask address and mask are a valid IP address and its associated mask expressed in either dotted decimal notation or in bit notation For example the following command configures IP interface 2 2 2 2 255 0 0 0 on an Ethernet physical interface on slot 2 connector 2 ethernet 2 2 ip address 2 2 2 2 mask 255 0 0 0 ip 2 2 2 2 255 0 0 0 An IP interface is now configured on the Ethernet
5. 117358 A Rev A A 9 Configuring IP Utilities Telnet Server Global Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure the Telnet server global parameters in the Edit Telnet Server Global Parameters widow Enable Disable Protocols gt Global Protocols gt Telnet Server gt Global Enable Enable Disable Specifies whether Telnet is enabled for the IP router allowing you to establish incoming Telnet sessions to the Technician Interface Select Enable to enable Telnet for the IP router Select Disable to disable Telnet for the IP router 1 3 6 1 4 1 18 3 5 3 7 1 2 TI Lines per Screen Protocols gt Global Protocols gt Telnet Server gt Global 24 1 to 24 lines Specifies the maximum number of lines displayed on the Telnet Technician Interface console screen The screen may override the number of lines you specify if Telnet can negotiate the window size with the remote client Set according to your console requirements 1 3 6 1 4 1 18 3 5 3 7 1 3 A 10 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descr
6. A 22 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Create MIB Inst for Cached Name Configuration Manager gt Protocols gt IP gt NetBIOS gt Global Enable Enable Disable Enables or disables the ability of the system to e Create a MIB instance for each name entry stored in the name cache e Delete a MIB instance for each NetBIOS name entry that ages out of the name cache Select Disable if you want to release the system memory and processing resources otherwise dedicated to maintaining cached names in the MIB 1 3 6 1 4 1 18 3 5 3 11 1 6 Max Name Cache Entries Configuration Manager gt Protocols gt IP gt NetBIOS gt Global 100 1 to 2147483647 entries Specifies the maximum number of entries you need to provide in the NetBIOS name cache You can adjust the value of this parameter in direct proportion to the total number of server names expected to be active during intervals of peak traffic load or performance demand on the router A value of 100 is suitable for networks that include up to 100 NetBIOS names to cache 1 3 6 1 4 1 18 3 5 3 11 1 7 117358 A Rev A A 23 Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Functio
7. 1 Router A receives a name query response from the server The router gleans from the name query response the name and IP address of the server 2 The router stores the name and IP address of the server in its cache 3 The router forwards the name query response 117358 A Rev A Configuring IP Utilities Routers that support NetBIOS must analyze each name query request received on a NetBIOS interface to determine whether the name of the requested resource typically a server is in the cache If so the router replaces the broadcast address in the request with the unicast IP address of the server The router then forwards the name query request to the server Enabling Name Caching on the Router NetBIOS name caching gives the router the ability to cache the name associated with each NetBIOS server that is active on the network By default NetBIOS name caching is disabled You can use Site Manager to enable name caching The 15 character NetBIOS name caching parameter gives the router the ability to treat a NetBIOS name as either a 15 or a 16 character entity By default NetBIOS treats a name as a 16 character entity You can use Site Manager to enable the feature if you want NetBIOS to treat a name as a 15 character entity Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choo
8. 2 22 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts The server responds to the name query request by issuing a positive name query response containing the IP address of the server to NetBIOS on the host The following steps occur Figure 2 9 1 NetBIOS sends the response to router A as a unicast message 2 Router A and router B forward the unicast response to the awaiting client Now that the client has obtained the server s IP address from the name query response client and server can communicate by exchanging IP messages Router A ie oll 4 Router B 4 Router C o me Router D I NetBIOS IP Interface TPO034A Figure 2 9 Returning a Unicast Name Query Response 117358 A Rev A 2 23 Configuring IP Utilities Forwarding Name Queries over an Unnumbered Interface NetBIOS cannot be configured directly on an unnumbered interface Because of this restriction name query requests cannot be broadcast over an unnumbered interface To forward name query requests over unnumbered interfaces the network administrator configures a static NetBIOS name entry to the proper NetBIOS name server In this way name query requests will traverse the unnumbered interfaces as unicast IP packets 2 24 117358 A Rev A Chapter 3 Customizing TCP Services Topic Page Setting M
9. TFTP was designed to be small and easy to implement Because it is small it is more restrictive lacking most of the features of the File Transfer Protocol FTP TFTP provides inexpensive unsophisticated file transfer service only It cannot list directories and provides no authentication TFTP runs on top of the User Datagram Protocol UDP and uses timeout and retransmission to ensure that data arrives Each file transfer begins with a request to read or write to a file this request also serves to ask for a connection If the server grants the request the connection is opened and the file is sent in fixed length blocks data packets of 512 bytes Each data packet contains one block of data and must be acknowledged by an acknowledgment packet before the next packet is sent A data packet of less than 512 bytes terminates the transfer If a packet gets lost in the network the intended recipient will time out and may retransmit its last packet which can be data or an acknowledgment causing the sender of the lost packet to retransmit the packet Because the lock step acknowledgment guarantees that all older packets have been received the sender keeps one packet only on hand for transmission 2 10 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts Both devices involved in a TFTP transfer are senders and receivers One device sends data and receives acknowledgments the other device sends acknowledgments a
10. The Protocols menu opens The IP menu opens The Edit TFTP Parameters window opens 4 Set the Default Volume parameter Click on Help or see the parameter description on page A 7 5 Click on OK Site Manager saves your changes and exits the window 5 2 117358 A Rev A Customizing TFTP Services Specifying a Retry Timeout Value Using BCC You can specify the amount of time in seconds that TFTP waits for an acknowledgment before retransmitting the last packet By default TFTP waits 5 seconds for an acknowledgment before retransmitting the last packet To specify a retry timeout value navigate to the TFTP prompt and enter retry timeout integer integer is any number of seconds For example the following command line causes TFTP to wait 10 seconds before it transmits the last packet tftp retry timeout 10 tftp Using Site Manager Complete the tasks in the following table to specify the number of seconds that TFTP waits for an acknowledgment Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose TFTP The Edit TFTP Parameters window opens 4 Set the Retry Time Out parameter Click on Help or see the parameter description on page A 7 5 Click on OK Site Manager saves your changes and exits the window 117358 A Rev
11. max win integer integer is a value from 512 to 65535 bytes For example the following command sets the value for the maximum window size to 1050 bytes tcp max win 1050 tcp 3 4 117358 A Rev A Customizing TCP Services Using Site Manager Complete the tasks in the following table to set the maximum window size in bytes that TCP allows for each connection Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Edit TCP Global Parameters window choose Protocols opens 2 Choose Global Protocols The Global Protocols menu opens 3 Choose TCP The TCP menu opens 4 Choose Global The Edit TCP Global Parameters window opens 5 Set the Max Window Size bytes parameter Click on Help or see the parameter description on page A 3 6 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A 3 5 Chapter 4 Customizing FTP Services Topic Page Specifying the FTP Default Volume 4 2 Specifying Number of Login Retries 4 3 Specifying Maximum FTP Idle Timeout 4 4 Specifying the Maximum Number of FTP Sessions 4 5 Specifying the Data Transmission Type 4 6 Specifying the FTP Control Connection 4 7 Specifying a Data Transfer Value 4 8 Specifying the TCP Window Size 4 8 This chapter describes how to customize FTP services on the router It assumes
12. You can use the BCC command line interface or the Site Manager graphical user interface to configure TFTP on the router using default values for all parameters Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 Using the BCC To start TFTP on the router with default settings begin in configuration mode at the box level prompt 1 Configure TFTP box tftp tftp 2 Display TFTP default settings tftp info on box state enabled default volume 2 retry timeout 5 close timeout 25 retry count 5 Using Site Manager You can easily start TFTP services using all default parameter values If you decide to change some or all of the defaults refer to the instructions in Chapter 5 For a list of TFTP parameters see Appendix B Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 117358 A Rev A 1 13 Configuring IP Utilities To start TFTP services perform the following actions Site Manager Procedure You do this System responds 1 From the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP Protocols menu opens 3 Choose TFTP The Edit TFTP Parameters window opens allowing you to customize TFTP parameters By default the default volume is set to 2 Disabli
13. login timeout For example the following command line causes the device to wait 15 minutes before it disconnects the Telnet session if you fail to enter a login ID at the login prompt server login timeout 15 server 6 10 117358 A Rev A Customizing Telnet Services Using Site Manager Complete the tasks in the following table to specify the number of minutes that can elapse before the device disconnects the Telnet session Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Login Timeout min parameter Click on Help or see the parameter description on page A 11 6 Click on OK Site Manager saves your changes and exits the window Changing the Password Timeout By changing the password timeout value you can determine the number of minutes that can elapse before the device disconnects the Telnet session if you do not enter a password at the password prompt Using the BCC By default the device waits 1 minute before it disconnects the Telnet session if you fail to enter a password at the password prompt To specify the number of minutes that can elapse before the device disconnects the Telnet sessi
14. Configuring IP Utilities BayRS Version 12 00 Site Manager Software Version 6 00 Part No 117358 A Rev A September 1997 Bay Networks Bay Networks 4401 Great America Parkway 8 Federal Street Santa Clara CA 95054 Billerica MA 01821 Copyright 1997 Bay Networks Inc All rights reserved Printed in the USA September 1997 The information in this document is subject to change without notice The statements configurations technical data and recommendations in this document are believed to be accurate and reliable but are presented without express or implied warranty Users must take full responsibility for their applications of any products specified in this document The information in this document is proprietary to Bay Networks Inc The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license A summary of the Software License is included in this document Trademarks AN BCN BLN BN FRE and Bay Networks are registered trademarks and Advanced Remote Node ANH ARN ASN System 5000 Bay Networks Press and the Bay Networks logo are trademarks of Bay Networks Inc All other trademarks and registered trademarks are the property of their respective owners Restricted Rights Legend Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in T
15. Configuring IP Utilities TCP Global Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure TCP global parameters in the Configuration Manager window Enable Disable Protocols gt Global Protocols gt TCP gt Global Enable Enable Disable Enables or disables TCP on the router Select Disable to disconnect from TCP Also you can select Disable if you do not need TCP but want to access previous TCP statistics 1 3 6 1 4 1 18 3 5 3 3 1 2 Min Retransmission Timeout msec Protocols gt Global Protocols gt TCP gt Global 250 100 through 15000 ms Sets the minimum value for the retransmission timeout When one side of a TCP connection sends a frame and does not receive an acknowledgment from the other side of the connection within the timeout period the sending station retransmits the frame Specify the value you want to use for the minimum timeout period If you are transmitting on a high speed network and you set the parameter value too high network performance may degrade because TCP must wait for the timeout period to elapse before retransmitting unacknowledged data 1 3 6 1 4 1 18 3 5 3 3 1 5 A 2 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Opti
16. A 5 3 Configuring IP Utilities Specifying a Close Time Out Value You can specify the number of seconds TFTP waits after it has successfully retrieved a file to make sure that the sender has received the last acknowledgment Using the BCC By default TFTP waits 25 seconds To specify a retry timeout value navigate to the TFTP prompt and enter close timeout integer integer is any number of seconds For example the following command line causes TFTP to wait 15 minutes to make sure that the send has received the last acknowledgment tftp close timeout 15 tftp Using Site Manager Complete the tasks in the following table to specify a close time out value Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose TFTP The Edit TFTP Parameters window opens 4 Set the Close Time Out parameter Click on Help or see the parameter description on page A 8 5 Click on OK Site Manager saves your changes and exits the window 5 4 117358 A Rev A Customizing TFTP Services Specifying the Number of Retransmissions You can specify the number of times TFTP retransmits an unacknowledged message before abandoning the transfer attempt Using the BCC By default TFTP abandons the transfer attempt after 5 unsuccessful retransmissions To specify the number of time
17. This chapter describes how to customize Trivial File Transfer Protocol TFTP services on the router It assumes you have configured IP on an interface and started TFTP using the default parameters as described in Chapter 1 and that you understand the TFTP concepts described in Chapter 2 After you start TFTP on the router TFTP default values are in effect for all TFTP parameters see parameter descriptions in Appendix A You customize TFTP by modifying these parameters as described in the following sections Specifying the Default Volume for the Router When you configure a router you must specify which of the router s slots will be used by default for all TFTP GETs and PUTs Using BCC By default the slot on which TFTP runs on the router is 2 If you are configuring an AN router you must specify slot 1 117358 A Rev A 5 1 Configuring IP Utilities To specify the slot on which TFTP runs navigate to the TFTP prompt and enter default volume slot slot is an integer in the range 1 to 14 la to 4a or 1b to 4b For example the following command line sets the default volume on which TFTP runs to 3 tftp default volume 3 tftp Using Site Manager Complete the tasks in the following table to specify the appropriate volume number on which you are configuring TFTP Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols 2 Choose IP 3 Choose TFTP
18. opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 4 6 Click on OK Site Manager saves your changes and exits the window Starting FTP Services You can use the BCC command line interface or the Site Manager graphical user interface to configure FTP on the router using default values for all parameters Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 Using the BCC To start FTP on the router with default settings begin in configuration mode at the box level prompt 1 Configure FTP box ftp ftp 1 10 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP 2 Display FTP default settings ftp info on box state enabled default volume 1 login retries 3 idle timeout 900 max sessions 3 tcp window size 60000 ftp Using Site Manager You can easily start FTP using default values for all parameters If you decide to change some or all of the defaults refer to the instructions in Chapter 4 For a list of FTP parameters see Appendix B Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 To start FTP services perform the following actions Site Manager Procedure You do this System responds 1 From the Configuration Man
19. s IP address or a range of remote time servers IP addresses 1 3 6 1 4 1 18 3 5 3 17 2 1 2 Access IP Mask Select Protocols gt Global Protocols gt NTP gt Access None 0 0 0 0 or any valid IP address Specifies an IP subnet mask address to filter NTP timestamps based on a source subnet NTP drops all packets sent from a specific remote time server on a specified subnet Specify the IP subnet mask address of the filter in the IP Mask Selection box in the NTP Access Configuration window 1 3 6 1 4 1 18 3 5 3 17 2 1 4 117358 A Rev A Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Configure Peer Mode Select Protocols gt Global Protocols gt NTP gt Peers Server Server only Specify the mode for the remote time server peer By default Config Peer Mode is set to Server To configure a remote time server peer click on Add Peer and specify the peer s IP address Bay Networks currently supports only the Server option 1 3 6 1 4 1 18 3 5 3 17 3 1 3 Local Host Mode Select Protocols gt Global Protocols gt NTP gt Peers Client Client only Allows you to specify the local mode in which you want to configure the local NTP client Currently Bay Networks supports only Unicast Client mode Specify Unicast Client mode in the Configuration Peer Mode selection
20. 117358 A Rev A 2 19 Configuring IP Utilities NetBIOS Overview The Network Basic Input Output System NetBIOS is a session layer communications service used by client and server applications in IBM token ring and PC LAN networks NetBIOS provides applications with a programming interface for sharing services and information across a variety of lower layer network protocols including IP Figure 2 7 shows the position of NetBIOS and IP in a simple network architecture Host A Host B _ eed ol Application Client Server layer iba eT Session NetBIOS NetBIOS NetBIOS layer Network P layer es eee L LAN WAN IP0032A Figure 2 7 NetBIOS over IP There are three categories of NetBIOS services the name service the session service and the datagram service The NetBIOS name service allows an application to e Verify that its own NetBIOS name is unique The application issues an add name query to NetBIOS NetBIOS broadcasts the add name query containing the name NetBIOS applications that receive the query return an add name response or a name in conflict response If no response to the query is received after typically six broadcasts the name is considered to be unique e Delete a NetBIOS name that the application no longer requires 2 20 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts e Use aserver s NetBIOS name to determine the server
21. 2 5 NTP Global Parameters Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure NTP parameters Enable Disable Select Protocols gt Global Protocols gt NTP gt Global Enable Enable Disable Enables or disables the NTP subsystem on the internet device To disable the NTP subsystem on the internet device specify Disable and click on OK in the Edit NTP Global Parameters window 1 3 6 1 4 1 1 18 3 5 3 17 1 1 3 117358 A Rev A Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Mode Protocols gt Global Protocols gt NTP gt Global Client Client BClient or MClient Specifies the mode in which you want NTP to run on the router Specify either Unicast Client Client Broadcast Client BClient or Multicast Client MClient mode and click on OK in the Edit NTP Global Parameters window 1 3 6 1 4 1 18 3 5 3 17 1 1 4 Peer IP Address Protocols gt Global Protocols gt NTP gt Add Peers None 0 0 0 0 or any valid IP address Specifies the IP address of the remote time server peer you want to configure NTP adds the IP address of the remote time server to a peer list NTP uses this peer list when que
22. A Rev A Configuring IP Accounting on a Frame Relay Interface Controlling Notification of a Full IP Accounting Table By default IP Accounting sends a log message when the active IP Accounting table is 80 percent full You must configure a trap to be sent Use Site Manager to configure a trap exception for entity 6 and event 99 You can use Site Manager to specify a value from 1 to 100 indicating the percentage of the maximum size that causes IP Accounting to send a trap message Site Manager Procedure You do this System responds 1 In the Configuration Manager window select Protocols The Protocols menu opens 2 Select IP The IP menu opens 3 Select Global The Edit IP Global Parameters window opens 4 Set the Trap Percent parameter as desired Click on Help or see the parameter description on page A 29 5 Click on OK Site Manager returns you to the Configuration Manager window Copying the IP Accounting Table to the Checkpoint Table Once the IP Accounting table is filled to capacity IP Accounting can make no further entries until you empty the table You can empty the accounting table by copying its contents to a checkpoint table You can use Site Manager to do this Site Manager Procedure You do this System responds 1 In the Configuration Manager window select Protocols The Protocols menu opens 2 Select IP The IP menu opens
23. A Rev A 6 5 Configuring IP Utilities Enabling and Disabling a Telnet Server on the IP Router You can enable or disable a Telnet server on the IP router By default Telnet is enabled for the IP router allowing you to establish Telnet sessions to the target router Using the BCC By default the Telnet server is enabled on the IP router To disable a Telnet server navigate to the Telnet server prompt and enter disable For example telnet server server disable To reenable a Telnet server on the IP router navigate to the Telnet server prompt and enter enable For example telnet server server enable Using Site Manager Complete the tasks in the following table to enable or disable a Telnet server on an IP router Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens continued 6 6 117358 A Rev A Customizing Telnet Services Site Manager Procedure continued You do this System responds 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 10 6 Click on OK Site Manager saves your changes and exits the window Specifying the Max
24. Configuration Manager gt Protocols gt IP gt NetBIOS gt Interface Enable Enable Disable Enables or disables outbound broadcasts on this interface If NetBIOS is configured and enabled on the router and enabled on this interface use this parameter to enable and disable outbound broadcasts as required 1 3 6 1 4 1 18 3 5 3 11 2 1 10 A 26 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Rebroadcast Address Configuration Manager gt Protocols gt IP gt NetBIOS gt Interface Null An IP broadcast address Specifies a broadcast address to use when rebroadcasting NetBIOS packets out this interface By default NetBIOS uses the IP broadcast address configured for this interface Set this parameter if you want to override this broadcast address 1 3 6 1 4 1 18 3 5 3 11 2 1 11 NetBIOS IP Static Entry Table Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure the NetBIOS IP static entry table parameters in the Configuration Manager window Enable Configuration Manager gt Protocols gt IP gt NetBIOS gt Static Name Enable Enable Disable Enables or disables caching of the NetBIOS name you have selected Set the parameter to Enable to activate caching of the name
25. Enable Disable Enables or disables NetBIOS on this IP interface If NetBIOS has been configured and enabled on the router use this parameter to disable and reenable it on this interface as required 1 3 6 1 4 1 18 3 5 3 11 2 1 2 117358 A Rev A A 25 Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID NetBIOS Name Caching Configuration Manager gt Protocols gt IP gt NetBIOS gt Interface Enable Enable Disable Enables or disables the ability of this interface to cache the name for each NetBIOS server active in the network Select Enable if you disabled server name caching previously and you want now to reenable that function Select Disable if you want to release system memory and processing resources otherwise dedicated to server name caching 1 3 6 1 4 1 18 3 5 3 11 2 1 8 Enable NetBIOS Inbound Broadcasts Configuration Manager gt Protocols gt IP gt NetBIOS gt Interface Enabled Enable Disable Enables or disables inbound broadcasts on this interface If NetBIOS is configured and enabled on the router and enabled on this interface use this parameter to enable and disable inbound broadcasts as required 1 3 6 1 4 1 18 3 5 3 11 2 1 9 Enable NetBIOS Outbound Broadcasts
26. FTP The FTP menu opens 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Idle Time Out secs parameter Click on Help or see the parameter description on page A 5 6 Click on OK Site Manager saves your changes and exits the window Specifying the Maximum Number of FTP Sessions You can determine the maximum number of FTP sessions you want to run simultaneously by specifying a value from 1 to 10000 Using the BCC By default FTP allows up to 3 sessions at one time To specify the number of sessions navigate to the FTP prompt and enter max sessions nteger integer is the maximum number of allowable FTP sessions For example the following command sets the maximum number of FTP sessions to 10 ftp max session 10 ftp 117358 A Rev A 4 5 Configuring IP Utilities Using Site Manager Complete the tasks in the following table to specify the maximum number of FTP sessions you want to run at one time Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Max Sessions parameter Click on Help or see the parameter description on page A 5 6 Click on OK Site Manager saves your changes and exits
27. Manager You can easily start NTP using all default parameter values If you decide to change some or all of the defaults refer to the instructions in Chapter 7 For a list of NTP parameters see Appendix B Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 1 20 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP To start NTP services perform the following actions Site Manager Procedure You do this System responds 1 From the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Create NTP Site Manager creates NTP on the router Disabling and Reenabling NTP Services After you configure IP and start NTP on the router all NTP default parameters are automatically enabled on the router Using the BCC To disable NTP services navigate to the NTP prompt and enter disable For example the following command line disables NTP on the router ntp disable ntp To reenable NTP services navigate to the NTP prompt and enter enable For example the following command line reenables NTP on the router ntp enable ntp 117358 A Rev A 1 21 Configuring IP Utilities Using Site Manager To disable and reenable NTP on the router complete
28. NTP and NetBIOS over IP To start TCP services perform the following actions Site Manager Procedure You do this System responds 1 From the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose TCP The TCP menu opens 4 Choose Create TCP The Edit TCP Global Protocols Parameter window opens allowing you to change TCP global parameters and Reenabling TCP on the Router After you configure IP and start TCP all TCP default parameters are automatically enabled on the router If you disable TCP it is no longer available on all IP circuits Using the BCC To disable TCP navigate to the TCP prompt and enter disable For example the following command line disables TCP on the router tcp disable tcp To reenable TCP navigate to the TCP prompt and enter enable For example this command line reenables TCP on the router tcp enable tcp 117358 A Rev A Configuring IP Utilities Using Site Manager Complete the tasks in the following table to disable and reenable TCP on the router Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose TCP The TCP menu opens 4 Choose Global The Edit TCP Global Parameters window
29. a value for the minimum retransmission timeout navigate to the TCP prompt and enter max rto integer integer is a value from 15000 to 240000 ms For example the following command sets the value for the maximum retransmission timeout to 235000 ms tcp max rto 235000 tcp Using Site Manager Complete the tasks in the following table to specify a maximum value for the retransmission timeout Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose TCP The TCP menu opens 4 Choose Global The Edit TCP Global Parameters window opens continued 117358 A Rev A 3 3 Configuring IP Utilities Site Manager Procedure continued You do this System responds 5 Set the Max Retransmission Timeout msec parameter Click on Help or see the parameter description on page A 3 6 Click on OK Site Manager saves your changes and exits the window Setting Maximum Window Size bytes You can specify a value in bytes to determine the maximum transmit and receive window size that TCP allows for each connection The larger the window size the more memory each TCP connection consumes Using the BCC By default TCP sets the maximum window size to 4096 bytes To specify the maximum window size navigate to the TCP prompt and enter
30. a value of 1 to 2147483647 entries Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Max Name Cache Entries parameter as desired Click on Help or see the parameter description on page A 23 6 Click on OK Site Manager returns you to the Configuration Manager window You can adjust this value in direct proportion to the total number of server names expected to be active during intervals of peak traffic load or performance demand on the router A value of 100 is suitable for networks that include up to 100 NetBIOS names to cache Aging a Cache Entry The router ages cache entries to ensure that cached routes remain consistent with the current network topology If the cache table lookup mechanism does not access a cache entry within the period you set in the appropriate Cache Aging Time parameter the router deletes the entry from the table 8 6 117358 A Rev A Customizing NetBIOS over IP If the router receives a broadcast name query request from a client and finds the name and associated IP address of the requested server in its cache the router replaces the broadcast address on the name query request with the unicast IP address The router also ass
31. allows sending only 8 octets of data not 8 PDUs To release a connection one TCP sends a PDU with the FIN flag set and a sequence number one greater than that assigned to the last octet of the transmitted data Upon receipt of this PDU the responding TCP sends back a PDU carrying an ACK for the FIN s sequence number and a FIN of its own this ACK or FIN may appear in the same PDU or in different PDUs The TCP that sent the first FIN must respond with an ACK for this new FIN This rather complex procedure allows a graceful close ensuring that no data is lost during release of the connection TCP Features Since IP does not always guarantee reliable transfer of data TCP implements several reliability features to ensure that data arrives at its destination uncorrupted and in the order sent Table 2 1 describes these features 2 2 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts Table 2 1 TCP Reliability Features Feature Description Sequence TCP assigns a sequence number to each data segment it numbers transmits The receiving host uses the sequence numbers to make sure that all the data arrives in order TCP assigns sequence numbers on a per octet basis so the value in this field is actually the sequence number of the first octet of the user data Out of order As TCP receives data segments it puts them in sequential order caching and forwards them to the receiving TCP client If TCP fail
32. an Interface cccceeceeeeeeeeeeteeteeeeeeeteeeeenes 8 9 Enabling Name Caching on the Interface ccccccceeeseeeeeeeeeeeeaeeeeeeeeeeaaeeseeeeeeaa 8 10 Disabling Inbound and Outbound Broadcasts ccccceessecceeeeenteeeeseenteeeeeeenaees 8 11 Supplying a Rebroadcast AACS sissies eiisiae RAAE EAA 8 12 Configuring a Static NetBIOS Name and Address PETE PE E arieni 8 13 Enabling and Disabling Static Name Caching ss cicciscecccnserecssassaccccce ceseeeceraeneesomcanse 8 13 Specifying the NetBIOS Station Name eisisisivissiesiriisrinisiiasiisnneasirniseandnnineeradis 8 14 Specifying the NetBIOS Station Address aeee iieo sete iniii 8 15 Supping A Scope danti sacii n A aed 8 16 Adding a Traffic Filter to a NetBIOS Interface isisusiiccirininncoreaniiniianiinineeniii nesans 8 17 117358 A Rev A ix Appendix A Parameter Descriptions STO OOP Se NG oko os Latico ice dsc acearoedecOesart a E A 2 FIP a iN Ne a aerate esa iether asides ga sada basa rans sada eed aden ASE EEN AAN A 4 TFTP Parameters Eee tree ere rene auc aaa E A E A A 7 Tenei Caniogan Parametre seiis nana AA A 8 Telnet Server Global Parameters ccccccceccececcececsecsetesaecesceseceecseseeseseaaeseseeseeeeees A 10 Telnet Client Global Paraimncterg srecne neren aer ARAC EA aiai A 16 MIP GODA Parame nga ses a ved ects gn a E n nA A 17 NetBIOS Global Parameters E E EE TEE EEE T TE ELETE EEE TT _A 22
33. broadcasts You can use Site Manager to disable this feature on the interface Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Interface The NetBIOS IP Interface Table window opens 5 Click on the IP interface you want The parameter values for that interface appear in the window 6 Set the following parameters Enable NetBIOS Inbound Broadcasts Enable NetBIOS Outbound Broadcasts Click on Help or see the parameter description on page A 26 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window 117358 A Rev A Configuring IP Utilities Supplying a Rebroadcast Address By default NetBIOS uses the IP broadcast address configured for this interface when rebroadcasting NetBIOS packets out this interface You can use Site Manager to supply a rebroadcast address that overrides this broadcast address Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Interface The NetBIOS IP Interface Table window opens 5 Click on the IP interface you want The parameter v
34. data or information without first obtaining any required export licenses or other governmental approvals Without limiting the foregoing Licensee on behalf of itself and its subsidiaries and affiliates agrees that it will not without first obtaining all export licenses and approvals required by the U S Government i export re export transfer or divert any such Software or technical data or any direct product thereof to any country to which such exports or re exports are restricted or embargoed under United States export control laws and regulations or to any national or resident of such restricted or embargoed countries or ii provide the Software or related technical data or information to any military end user or for any military end use including the design development or production of any chemical nuclear or biological weapons 9 General If any provision of this Agreement is held to be invalid or unenforceable by a court of competent jurisdiction the remainder of the provisions of this Agreement shall remain in full force and effect This Agreement will be governed by the laws of the state of California Should you have any questions concerning this Agreement contact Bay Networks Inc 4401 Great America Parkway P O Box 58185 Santa Clara California 95054 8185 LICENSEE ACKNOWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT UNDERSTANDS IT AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS LICENSEE FURTHER AGREES THAT THIS
35. default the device allows you 3 login attempts before it disconnects the Telnet session To change the maximum number of allowed login attempts enter login retries integer integer is a number from 1 to 99 login attempts For example the following command line tells the device to allow 10 attempts before it disconnects the Telnet session server login retries 10 server Using Site Manager Complete the tasks in the following table to specify the number of login attempts allowed before the device disconnects the Telnet session Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Login Retries parameter Click on Help or see the parameter description on page A 12 6 Click on OK Site Manager saves your changes and exits the window 6 14 117358 A Rev A Customizing Telnet Services Using Telnet Server Diagnostics This section describes how to configure Telnet server diagnostic parameters to customize the way the Technician Interface performs diagnostics on a router Field Service personnel use these features to troubleshoot problems The BCC does not support these functions Enabling Diagnostic Repor
36. determine the size of the window you require on your system for TCP connections by specifying its size in bytes Using the BCC By default the size of TCP windows used for connections is 60 000 bytes To specify a TCP window size navigate to the FTP prompt and enter tcp window size integer integer is the size in bytes of the TCP window 4 8 117358 A Rev A Customizing FTP Services For example the following command line sets the window size used for TCP connections to 45 000 bytes ftp tcp window size 45000 ftp Using Site Manager Complete the tasks in the following table to specify the size of the windows used for TCP connections Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP 4 Choose Global The FTP menu opens The Edit FTP Global Parameters window opens 5 Set the TCP Window Size parameter Click on Help or see the parameter description on page A 6 6 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A 4 9 Chapter 5 Customizing TFTP Services Topic Page Specifying the Default Volume for the Router 5 1 Specifying a Retry Timeout Value 5 3 Specifying a Close Time Out Value 5 4 Specifying the Number of Retransmissions 5 5
37. eee isteni EEE eae ionien 6 10 Changing the Fassword TIMEOUT cisisniriinanim eiea a aai 6 11 ASTI the Command THOU sssineisisiisieniiiuioiani noian iinan ainan iaai 6 12 Changing Login Retries 000 EEE E ET enia et 6 14 Using Telnet Server DIAGNOSES sicixssticaccseisciesnvestai aE 6 15 Enabling Diagnosie Me por Wg acai scicarc cmincesiuaon ered iesteaunsinessndncidduades 6 15 Enabling Diggroshie EXCISE orisiirisii ieee 6 15 Enabling Diagnostic Network DAIA secsnissusioinn 6 16 Enabling Diagnostic PTY Data sisccssssocosesnedaccennenscs PEER PEET PET 6 17 Enabling DIGG SIG IGN ssc cases sccccatiesscsctomeactascieieastcbance ecaeaaechademneaannds 6 18 CTT IIe he EASE DENG xrani a aaa aaa iN 6 18 Configuring a Telnet Client on the Router Cit decane as renee ere eter 6 19 Enabling and Disabling a Telnet Client on the IP Houler E PEP E cau eieaee 6 19 Enabling and Disabling Verbose Debug Logging eeeesesessisesersssrrsssrrssrrssrrnsrre 6 21 Ghanginig the Remote Pori scisco einai aA aa AEAN 6 22 Ghanging the Command Prompi scocssedsaatei arisen elaeuenbrietashie ies 6 23 Chapter 7 Customizing NTP Services Disabling and Roenabling NTP ssnnssninina i a eas 7 2 Setting the NTP Operation Mode iincssisiiuoicinii oiana eiaa aaa iiS 7 3 viii 117358 A Rev A Gontiguring Remate Time Servers ccs scraviisacrste tpi scien an N 7 4 Adding Remote Lime Sene snaosain saccuuieas 7 4 emng Conia Peer Mode iianriuciisina ie eceieleeme
38. interface with default values for all interface parameters When you configure an IP interface the BCC also configures IP globally on the router with default values for all IP global parameters You can customize IP by modifying IP global and interface parameters as described in Configuring IP Services 117358 A Rev A Configuring IP Utilities Starting TCP Services You can use the BCC command line interface or the Site Manager graphical user interface to start TCP on the router using default values for all parameters Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 Using the BCC To configure TCP on the router with default settings begin in configuration mode at the box level prompt 1 Configure TCP box tep 2 Display TCP default settings tcp info on ip state enabled min rto 250 max rto 240000 max win 4096 tcp Using Site Manager You can easily start TCP services using default values for all parameters If you decide to change some or all of the default values refer to the instructions in Chapter 3 Customizing TCP Services For a list of TCP parameters see Appendix B Before you can start TCP services you must verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 1 8 117358 A Rev A Disabling Starting TCP FTP TFTP Telnet
39. login set this parameter to Enable Using the BCC To prevent users from canceling the user autoscript at login navigate to the server specific prompt and enter force logout enabled 6 4 117358 A Rev A Customizing Telnet Services For example this command line prevents users from canceling the user autoscript at login server force logout enabled server To allow users to cancel the user autoscript at login navigate to the server specific prompt and enter force logout disabled For example this command line allows users to cancel the user autoscript at login server force logout disabled server Using Site Manager Complete the tasks in the following table to cancel the user autoscript at login or to prevent users from canceling the user autoscript at login Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Create Telnet Server The Telnet Configuration window opens 5 Set the Force User Logout parameter Click on Help or see the parameter description on page A 9 6 Click on OK Site Manager saves your changes and exits the window Customizing the Telnet Server on the Router This section describes how to customize your Telnet server on the router 117358
40. of the manager s script file is automgr bat You can specify a new name for the manager s login script by supplying an 8 character file name If you do not want to change the name of the manager s login script accept the default name Using the BCC To specify the name of the Manager s Login script navigate to the server specific prompt and enter manager script string string is name of the manager s login script file 6 2 117358 A Rev A Customizing Telnet Services For example the following command line causes the device to assign the name manager bat to the manager s login script server manager script manager1 bat server Using Site Manager Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Create Telnet Server The Telnet Configuration window opens 5 Set the Manager s Login Script parameter Click on Help or see the parameter description on page A 8 6 Click on OK Site Manager saves your changes exits the window and returns you to the Configuration Manager window Changing the Name of the User s Login Script File By default the name of the user s login script file is autouserbat You can specify a new name for the user s login script file by
41. onanan EN 1 19 SrO NIE ae SS aSa 1 20 Usmo ihe BOCs enernnscnuninna r E oa aer ei 1 20 Using otis MAE annaa TAE eee EE 1 20 Disabling and Reenabling NTP Services 0 ccccscceeesceeeseeeeeeceeenseeseeaaaesneeeeeeaaaeeeeeaeees 1 21 Usmo the BCO urnie neiaa h A A 1 21 Using Sis Mana GET iiias ER idea E a 1 22 Starting NetBIOS over IP E un eanchactaptidacees E E raien 1 22 Adding NetBIOS toari IP Iniernat casscdsiciasancciaic cancecnticinadaiscemaeteienainreiciaraauiaiannms 1 23 Enabling and Disabling NetBIOS on a Router ssssisssvssissninsrirsniiniinnaninisisanana 1 24 Chapter 2 TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts TCP Overview ccccceeeeeeeee ENIE tats ee PE ETA ee ET ETE E EEE 2 1 How TOF WoE cesto ea a a 2 2 MEE laa E DA AE A AE A E TA A A A A E E EE EE TAA ETE 2 2 Connection VDES cisocana niaaa en aa e E aaas 2 4 Connections and Connection States ccccccccccccessseceeeeesneeeeeessnneeeeesssneeeeeneees 2 4 TCP Memory Considerations E sinkeebuled PE R E edad teow 2 5 TOF and Gere USOE reii en ee epee egy ce a ere er 2 6 EE aaa ntact enca rated TE 2 7 How FIP WY ORRS i deccrxtancanchieaacdiacteiaididdenmmeniddantaeiideneteinds PEE E E panies enie 2 8 vi 117358 A Rev A Boel Ud eg 4 os EN PO BRO Re vO ee ATER WOE E Ver vr Dera eT a 2 10 TET ADNAN ssaa isin caxaiected sedan EENS EE AOE EEE A 2 11 HONTAN WO aA 2 12 Tonei OONO pocesoinin a N ones 2 12 Telnet Cheni secd
42. originating from a server and addressed to a client must be able to deliver the message to the NetBIOS entity on the router rather than simply forward it out another interface toward its destination To enable the router to recognize a unicast IP packet that contains a name query response and pass it to NetBIOS through UDP port 137 you must configure a traffic filter on each NetBIOS interface that receives unicast name query responses Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Circuits menu opens choose Circuits 2 Choose Edit The Circuit List window opens 3 Click on Edit The Circuit Definition window open 4 Choose Protocols The Protocols menu opens 5 Choose Edit IP The Edit IP menu opens 6 Choose Traffic Filters The IP Filters window opens 7 Click on Template The Filter Template Management window opens 8 Click on Create The Create IP Template window opens 9 Choose Criteria The Criteria menu opens 10 Choose Add The Add menu opens 11 Choose UDP Frame The UDP Frame menu opens 12 Choose Destination Port The Edit Range screen opens 13 Type 137 for the minimum value and the maximum value 14 Click on OK The Create IP Template window opens 15 Choose Action The Action menu opens 16 Choose Add The Add menu opens continued 117358 A Rev A 8 17 Configuring IP Utilities Si
43. s network address The application issues a name query request to NetBIOS containing the target server s NetBIOS name NetBIOS broadcasts the name query request The server that recognizes the name returns a name query response containing its network address The NetBIOS session service allows an application to conduct a reliable sequenced exchange of messages with another application The messages can be up to 131 071 bytes long The NetBIOS datagram service allows an application to exchange datagrams with a specific application or to broadcast datagrams to a group and receive datagrams from the group Datagrams allow applications to communicate without establishing a session When a NetBIOS application wants to send information that does not require acknowledgment from the destination application the application can transmit a NetBIOS datagram NetBIOS in an IP Environment The NetBIOS name service and datagram service rely on the capability of the underlying network to broadcast name query requests to all NetBIOS applications In a NetBIOS over IP environment it is the responsibility of the IP router to ensure that the broadcast queries reach all appropriate network segments To do this the router 1 Analyzes each NetBIOS packet received on any NetBIOS interface to determine whether the packet is a broadcast packet 2 Rebroadcasts each broadcast packet out all appropriate interfaces except the one on which it was received readdr
44. sockets 2 4 starting IP 1 6 station NetBIOS for IP name for 8 14 address for 8 15 Subnet Mask parameter IP configuration 1 6 T TCP clients 2 4 2 6 connection states 2 4 to 2 7 memory considerations 2 5 overview 2 1 to 2 7 ports 2 4 117358 A Rev A TCP Global parameters A 2 to A 3 descriptions of A 2 to A 3 Enable Disable A 2 Max Retransmission Timeout A 3 Max Window Size 2 5 A 3 A 8 A 9 A 10 Min Retransmission Timeout A 2 Technical Solutions Centers xxi Technician Interface 2 11 Telnet 2 6 to 2 11 Telnet Client Global parameters descriptions of A 16 to A 17 Enable Disable A 16 A 17 Remote Port A 17 Verbose Debug Logging A 16 Telnet configuration parameters Force User Logout A 9 Manager s Login Script A 8 A 9 A 10 Telnet Server Global parameters Command Timeout A 12 Diagnostic Network Data A 13 Diagnostic Options A 14 Diagnostic Report A 13 Force User Logout A 15 Login Retries A 12 Login Timeout A 11 A 12 TI More A 11 User s Login Script A 15 TFTP Trivial File Transfer Protocol 2 10 5 1 default volume 5 2 Threshold parameter D 2 Transmission Control Protocol See TCP Transmit Bcast Addr parameter IP configuration 1 6 Trap Percent parameter D 3 Trivial File Transfer Protocol function of 2 10 5 1 U UnNumbered Assoc Address parameter IP configuration 1 6 Index 3 WwW window size for TCP 4 8 A 6 Index 4 117358 A Rev A
45. supplying an 8 character file name If you do not want to change the name of the user s login script accept the default name Using the BCC To specify the name of the user s login script file navigate to the server specific prompt and enter auto user script string string is the name of the user s login script file 117358 A Rev A Configuring IP Utilities For example the following command line causes the system to automatically execute the script file router bat at login server auto user script router1 bat server Using Site Manager Complete the tasks in the following table to specify a new user s login script file Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Create Telnet Server The Telnet Configuration window opens 5 Set the User s Login Script parameter Click on Help or see the parameter description on page A 9 6 Click on OK Site Manager saves your changes and exits the window Enabling and Disabling User Logout By default the user autoscript is is in effect for your Telnet session when you log in You can press control c to cancel the user autoscript and access the Technician Interface To prevent users from canceling the user autoscript at
46. the maximum idle time you want to allow and specify the time value in seconds 1 3 6 1 4 1 18 3 5 3 10 1 5 Max Sessions Protocols gt Global Protocols gt FTP gt Global 3 1 to 10000 sessions Specifies the maximum number of FTP sessions allowed at one time Determine the maximum number of simultaneous sessions you want to allow and specify a value 1 3 6 1 4 1 18 3 5 3 10 1 6 Type of Service Protocols gt Global Protocols gt FTP gt Global Binary Binary ASCII Specifies the current data transmission type To transfer files consisting of ASCII characters specify ASCII transmission For non ASCII files specify Binary 1 3 6 1 4 1 18 3 5 3 10 1 7 117358 A Rev A A 5 Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Control Connection Protocols gt Global Protocols gt FTP gt Global Low Delay Normal Low Delay Specifies the Type of Service value that FTP inserts in IP datagrams on a control connection Choose the option that determines how the Internet transport layer handles datagrams on a control connection 1 3 6 1 4 1 18 3 5 3 10 1 8 Data Transfer Protocols gt Global Protocols gt FTP gt Global High Throughput Normal High Throughput Specifies th
47. the window Specifying the Data Transmission Type The BCC does not support this parameter You can determine the type of data transmission you want to use to transfer your files To tranfer files consisting of ASCII characeters specify ASCII To specify files consisting of binary characters specify Binary You can use Site Manager to specify the data transmission type you want to use Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens select Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens continued 4 6 117358 A Rev A Customizing FTP Services Site Manager Procedure continued You do this System responds 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Type of Service parameter Click on Help or see the parameter description on page A 5 6 Click on OK Site Manager saves your changes and exits the window Specifying the FTP Control Connection The BCC does not support this parameter You can determine how the Internet transport layer handles datagrams on a control data connection by specifying the Type of Service value that FTP inserts in IP datagrams on a control connection You can use Site Manager to specify the type of service value Site Manager Procedure You do this
48. values are in effect for all Telnet client parameters see parameter descriptions in Appendix A You may want to change these parameter values depending on the requirements of your network The following sections describe information you supply and options you select that affect the way a Telnet client runs on the router Enabling and Disabling a Telnet Client on the IP Router You can enable or disable a Telnet client on the IP router By default the Telnet client is enabled on the IP router allowing you to establish Telnet sessions to the target router 117358 A Rev A 6 19 Configuring IP Utilities Using the BCC To disable a Telnet client navigate to the client specific prompt and enter disable For example client disable client To reenable a Telnet client on the IP router and display its default values navigate to the client specific prompt and enter enable For example client enable client info on telnet state enabled debug log flag off remote port 23 prompt Using Site Manager Complete the tasks in the following table to enable or disable a Telnet client on an IP router Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens Choose Telnet Client The Telnet Client menu opens 4 Choose Global The Telnet Client Global Parame
49. window Manager s Login Script Protocols gt Global Protocols gt Telnet Server gt Create Telnet Server automgr bat The name of the manager s login script file At login executes the manager s login script file automatically If you did not change the name of the manager s login script file accept the default Otherwise enter the new name must be 8 characters or fewer 1 3 6 1 4 1 18 3 5 3 7 1 21 A 8 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions User s Login Script Protocols gt Global Protocols gt Telnet Server gt Create Telnet Server autouser bat None At login executes the user s login script file automatically If you did not change the name of the user s login script file accept the default Otherwise enter the new name must be 8 characters or fewer 1 3 6 1 4 1 18 3 5 3 7 1 22 Force User Logout Protocols gt Global Protocols gt Telnet Server gt Create Telnet Server Disable Enable Disable Specifies whether the user can press control c to cancel a user autoscript at login when a user autoscript is in effect Select Enable to prevent using control c to cancel the user autoscript at login Select Disable to allow the user to press control c to cancel the user autoscript at login 1 3 6 1 4 1 18 3 5 3 7 1 23
50. you selected Set the parameter to Disable to deactivate caching of the name you selected 1 3 6 1 4 1 18 3 5 3 11 4 1 2 NetBIOS Scope ID Configuration Manager gt Protocols gt IP gt NetBIOS gt Static Name None A NetBIOS scope identifier Identifies the area of the network across which the NetBIOS name is known Enter a name string that meets the requirements of the Domain Name System as described in RFC 833 1 3 6 1 4 1 18 3 5 3 11 4 1 5 117358 A Rev A A 27 Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID NetBIOS Station Name Configuration Manager gt Protocols gt IP gt NetBIOS gt Static Name None A name string of up to 16 characters Specifies the name of a NetBIOS station Enter the NetBIOS name you want to add The name must not exceed 16 characters The system pads names shorter than 16 characters with ASCII space characters To enter non ASCII values in the name use the form xbb where bb can be any two hexadecimal digits 1 3 6 1 4 1 18 3 5 3 11 4 1 4 NetBIOS Scope ID Configuration Manager gt Protocols gt IP gt NetBIOS gt Static Name None A NetBIOS scope identifier Identifies the area of the network across which the NetBIOS name is known Enter a name
51. 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Diagnostic Exercise parameter Click on Help or see the parameter description on page A 13 6 Click on OK Site Manager saves your changes and exits the window Enabling Diagnostic Network Data This parameter allows you to specify whether you want the Technician Interface to display Telnet protocol information It is used for diagnostic purposes only by field service personnel To display Telnet protocol information complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens continued 6 16 117358 A Rev A Customizing Telnet Services Site Manager Procedure continued You do this System responds 5 Set the Diagnostic Network Data parameter Click on Help or see the parameter description on page A 13 6 Click on OK Site Manager saves your changes and exits the window Enabling Diagnostic PTY Data To specify whether you want the Technician Interface to display pseudo terminal driver PTY information complete the tasks in the follo
52. 8 A Rev A 4 3 Configuring IP Utilities Site Manager Procedure continued You do this System responds 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Login Retries parameter Click on Help or see the parameter description on page A 4 6 Click on OK Site Manager saves your changes and exits the window Specifying Maximum FTP Idle Timeout The FTP idle time is the length of time in seconds that FTP waits before closing an idle FTP control connection You must determine the maximum idle time you want to allow and specify the time value in seconds Using the BCC By default FTP waits 900 seconds before closing an idle FTP control connection To specify a timeout interval navigate to the FTP prompt and enter idle timeout integer integer is the number of seconds FTP waits before timing out For example the following command line causes FTP to wait 150 seconds before closing an idle FTP control session ftp idle timeout 150 ftp 4 4 117358 A Rev A Customizing FTP Services Using Site Manager Complete the tasks in the following table to set the length of time in seconds that FTP waits before closing an idle FTP control connection Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose
53. AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN BAY NETWORKS AND LICENSEE WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST BAY NETWORKS UNLESS BAY NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT iv 117358 A Rev A Contents About This Guide Borre ce t Bled s Ly eaten eee renne tree tend R xviii Conventions 0 PEE E E E E E E E T xviii PETO a a a AE xix Ordering Bay Networks PUDICANONS scaiasseraccacdhertdicaassidsoinudsetcadaiuussduansassonewoercaedunerane XX Bay Neiworks Customer SRW cssriiimiien ioiii iaa aa a antennas XX PIG TOoel IG airaa aaa Aeterna ees xxi Chapter 1 Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Whaisin thie COE sess ictiscantshaccesesnonigedaceaneincsrelnidecimends E O A 1 1 Summary of TCP FTP TFTP Telnet NTP and PRESS over F aid ss hen erscer ci dal iieiea 1 2 Stering Conhguraugh TIGIS sastera aenar EE AEA 1 5 Gomiynriag iP or Glgbal PRtpele rniii A A 1 6 Using Site Manager E T aain E E spireo 1 6 Usma tme BOO edri aiii A S 1 6 Step 1 Configuring a Physical Interface eeseesssesssessssesssesssressrresrnsssnnessnses 1 7 slep 2 CORUM an IP Imera0E 6 ici descecaicacerwasicduacnaseicotetnaletdenppaieedanauaiers 1 7 Srog TP SECES airn
54. ANWAN 408 495 1188 Valbonne France 33 4 92 96 69 68 33 4 92 96 69 98 Sydney Australia 61 2 9927 8800 61 2 9927 881 1 Tokyo Japan 81 3 5402 0180 81 3 5402 0173 117358 A Rev A xxi Chapter 1 Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP What s in This Chapter This chapter describes how to create a basic TCP FTP TFTP Telnet NTP and NetBIOS over IP configuration by specifying values for required parameters only and accepting default values for all other parameters of these services The following table describes the sequence of tasks required to complete basic configuration Topic Page Summary of TCP FTP TFTP Telnet NTP and NetBIOS over IP Services 1 2 Starting Configuration Tools 1 5 Configuring IP for Global Protocols 1 6 Starting TCP Services 1 8 Disabling and Reenabling TCP on the Router 1 9 Starting FTP Services 1 10 Disabling and Enabling FTP 1 11 Starting TFTP Services 1 13 Disabling and Reenabling TFTP Services 1 14 Starting Telnet Services 1 15 Disabling and Reenabling Telnet Services 1 17 Starting NTP Services 1 20 Disabling and Reenabling NTP Services 1 21 continued 117358 A Rev A 1 1 Configuring IP Utilities Topic Page Starting NetBIOS over IP 1 22 Adding NetBIOS to an IP Interface 1 28 Enabling and Disabli
55. AS IS AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE In addition the program and information contained herein are licensed only pursuant to a license agreement that contains restrictions on use and disclosure that may incorporate by reference certain limitations and notices imposed by third parties 117358 A Rev A Bay Networks Inc Software License Agreement NOTICE Please carefully read this license agreement before copying or using the accompanying software or installing the hardware unit with pre enabled software each of which is referred to as Software in this Agreement BY COPYING OR USING THE SOFTWARE YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH BAY NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE If you do not accept these terms and conditions return the product unused and in the original shipping container within 30 days of purchase to obtain a credit for the full purchase price 1 License Grant Bay Networks Inc Bay Networks grants the end user of the Software Licensee a personal nonexclusive nontransferable license a to use the Software either on a single computer or if applicable on a single authorized device identified by host ID for which it was originally acquired b to copy the Software
56. CP connection TCPOO04A Figure 2 3 Telnet Server Telnet Client When you create a Telnet client the router sends outbound requests to a remote host to establish a Telnet session on a remote node After the router establishes the Telnet session you can access all Technician Interface commands If you have established a terminal console cable connection to a router you can log in to the local router and use the Telnet command to establish a remote session on a remote router Figure 2 4 In this case the local router is defined as the Telnet client and the remote router as the Telnet server 117358 A Rev A 2 13 Configuring IP Utilities Telnet client Outbound Telnet server El E oe 4 Telnet session El ae Console cable TCP connection TCPOO0SA Figure 2 4 Telnet Client For information on creating Telnet on the router and editing Telnet parameters refer to Chapter 6 2 14 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts NTP Overview The Network Time Protocol NTP synchronizes the timing of internal clocks of various internet devices across large diverse networks to universal standard time NTP runs over UDP which in turn runs over IP The NTP protocol specification is documented in RFC 1305 Each internet device on the n
57. Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Peers The NTP Peers Configuration List window opens continued 117358 A Rev A Customizing NTP Services Site Manager Procedure continued You do this System responds 5 Click on the IP address of the time server that displays in the NTP Peer list 6 Set the Config Peer Mode parameter Click on Help or see the parameter descriptions on page A 20 7 Click on Apply Site Manager sets the mode for the remote time server to Server Bay Networks supports only the Server option 8 Click on Done The NTP Peers Configuration List window closes and the Configuration Manager window opens Setting Local Host Mode The BCC does not support this function Local Host Mode indicates the mode of operation of the local NTP client By default the Local Host Mode is set to Client because only Unicast Client mode is supported To specify the local mode in which you want to configure the local NTP client complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Peers The NTP Peers Configuration List window opens 5 Click on the I
58. Choose NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on page page A 25 6 Click on OK Site Manager returns you to the Configuration Manager window 1 24 117358 A Rev A Chapter 2 TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts This chapter describes the concepts behind TCP FTP TFTP Telnet NTP and NetBIOS over IP services and how we implement them in Bay Networks routers You can use this information to decide how to customize TCP FTP TFTP Telnet NTP and NetBIOS over IP parameters for your system TCP Overview In the 1970s the Defense Advanced Research Projects Agency DARPA of the U S Department of Defense DOD developed the Transmission Control Protocol TCP to provide communication among hosts manufactured by different vendors DARPA designed TCP to work within a layered hierarchy of networking protocols using the Internet Protocol IP to transfer data Built upon the IP layer suite TCP is a connection oriented end to end protocol that provides the packet sequencing error control and other services required to provide reliable end to end communications IP takes the packet from TCP and passes it along whatever gateways are needed for delivery to the remote TCP layer through the remote IP layer The Bay Networks implementation of TCP gener
59. D Password Timeout min Protocols gt Global Protocols gt Telnet Server gt Global 1 1 to 99 minutes 99 infinity Specifies the number of minutes that can elapse before the Technician Interface disconnects the Telnet session if you do not enter a password at the password prompt Accept the default value 1 minute or specify a different value 1 3 6 1 4 1 18 3 5 3 7 1 7 Command Timeout min Protocols gt Global Protocols gt Telnet Server gt Global 15 1 to 99 minutes 99 infinity Specifies the number of minutes that can elapse before the Technician Interface disconnects the Telnet session if you do not enter a command at the command prompt Accept the default value 15 minutes or specify a different value 1 3 6 1 4 1 18 3 5 3 7 1 8 Login Retries Protocols gt Global Protocols gt Telnet Server gt Global 3 1 to 99 login attempts Specifies the maximum number of login attempts allowed before the Technician Interface disconnects the Telnet session Accept the default value 3 or specify a different value 1 3 6 1 4 1 18 3 5 3 7 1 9 A 12 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Diagnostic Report Protocols gt Global Protocols gt Telnet Serv
60. Full IP Accounting Table Des Copying the IP Accounting Table to the Checkpoint Table D 3 117358 A Rev A D 1 Configuring IP Utilities Enabling IP Accounting on the Router By default IP Accounting support is disabled on the router You can use Site Manager to enable IP Accounting Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens select Protocols 2 Select IP The IP menu opens 3 Select Global The Edit IP Global Parameters window opens 4 Set the Enable parameter as desired The field is selected Click on Help or see the parameter description on page A 29 5 Click on OK Site Manager returns you to the Configuration Manager window Specifying the Maximum Size of the IP Accounting Table By default the IP Accounting table can contain up 512 entries per slot You can use Site Manager to specify the maximum number of entries in the IP Accounting table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens select Protocols 2 Select IP The IP menu opens 3 Select Global The Edit IP Global Parameters window opens 4 Set the Threshold parameter as desired Click on Help or see the parameter description on page A 29 5 Click on OK Site Manager returns you to the Configuration Manager window D 2 117358
61. NetBIOS IP Interface Table Parameters cccccccsscceccsesseeeeeeeeneeeeeeenaeeeeesenieeeeeseeaes A 25 NetBIOS IP Static Entry Table Parameters c cssccc cccse lect ieeennectreedantinneectetendenenane A 27 IP Accounting Parameters iaee PE E E aaia _A 29 Appendix B Site Manager Default Settings TCP Parameters P ere PEET E PER E E AE idaceeibicd B 1 PTP PPS aroia ier eee B 2 IEE S a E B 2 POP S na N ESA B 3 iaa e E A E NAAS AE AE S A AE B 4 NeBIOS Over IF Paranee S Seen eRe ene ene nen Ran SSR AS ARDERE ene B 5 IF Accouning FaramelerS essin aaiteaeteceedeiie ranev heed aicie de cence rece one B 6 Appendix C Configuring IP Global Access Policies Creating and Naming the Policy ccccsseesseeeettteeeeeeees PEE aapi C 2 Specifying the Network to Which the Policy Applies cccsccceeeeeeseeeeeeeeeeesteeeeeeees C 2 Disabling and Reenabling a PONY isncscusrcsicadcrstocbecckwaasnc ative dears cianaianiedsnaninesacivadoserssuantss C 3 SCAN Me FGM ACON druan tind cerns teed vase ne nde eee aes C 3 Disabling and Reenabling Logging osicsuusssannchudc an aetna C 4 Specifying the IP Service PE E T PEE EE EE T neu C 4 SCV Me PICU e NS rsisi N C 5 Global IP Access Policy Exaile ccccccdccdascsccoisensccsuasndsd anin baeaneossndcaudeandeccededsedursune C 5 x 117358 A Rev A Appendix D Configuring IP Accounting on a Frame Relay Interface Enabling IP Accounting on the ROUGE oinisiecercicinnosccnirdaaecd
62. Options Disable TI History Depth 20 commands 117358 A Rev A B 3 Configuring IP Utilities Table B 6 lists the Site Manager default parameter settings for a Telnet client Table B 6 Telnet Client Configuration Parameters Parameters Default Enable Disable Enable Verbose Debug Logging OFF Remote Port 23 Prompt None NTP Parameters Table B 7 lists the Site Manager default parameter settings for NTP Table B 7 NTP Configuration Parameters Parameters Default Enable Disable Enable NTP Mode Unicast Client Create Delete Peer Create Configure Peer Mode Server Local Host Mode Client Source IP Address None Peer Preference No Access IP Address None Filter Type Restrict Access IP Mask None Peer IP Address None B 4 117358 A Rev A NetBIOS over IP Parameters Site Manager Default Settings Table B 8 lists the Site Manager default settings for NetBIOS IP global parameters Table B 8 NetBIOS IP Global Parameters Parameter Default Enable Disable Enable NetBIOS Name Caching Disable 15 Character NetBIOS Name Disabled Caching Create MIB Inst for Cached Name Enabled Max Name Cache Entries 100 entries Name Cache Age 300s Hash Entry Count 253 Rebroadcast Packet TTL 5s Rebroadcast Record Route Disabled Table B 9 lists the Site Manager default settings for NetBIOS IP interface table
63. P address of the time server that displays in the NTP Peer list continued 117358 A Rev A 7 7 Configuring IP Utilities Site Manager Procedure continued You do this System responds 6 Setthe Local Host Mode parameter Click on Help or see the parameter descriptions on page A 20 7 Click on Apply Site Manager sets the mode for the remote time server to Server Bay Networks supports only the Server option 8 Click on Done The NTP Peers Configuration List window closes and the Configuration Manager window opens Specifying the Source IP Address The source IP address allows you to specify a single Internet protocol address that NTP uses to override the source address of the IP interface from which the NTP packet is transmitted Use this parameter only when you want the remote time server to filter NTP timestamps for the local NTP client based on IP source address We recommend using a circuitless IP address as the source IP address You might also want to specify a source IP address when you have enabled security features on a time server and you want to restrict access to it Using the BCC By default the source IP address is 0 0 0 0 To specify a source IP address that overrides the source address of the IP interface from which the NTP packet is transmitted enter src ip address For example the following command line causes NTP to use the source IP address 4 4 4 4 to ov
64. PUTs Specify the appropriate slot number If you are configuring an AN router you must specify slot 1 1 3 6 1 4 1 18 3 5 3 6 2 Retry Time Out Configuration Manager gt Protocols gt IP gt TFTP 5 Any number of seconds Specifies the number of seconds TFTP waits for an acknowledgment before retransmitting the last packet Specify the appropriate number of seconds 1 3 6 1 4 1 18 3 5 3 6 4 117358 A Rev A A 7 Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Close Time Out Configuration Manager gt Protocols gt IP gt TFTP 25 Any number of seconds Specifies the number of seconds TFTP waits after it has successfully received a file to make sure that the sender has received the last acknowledgment Specify the appropriate number of seconds 1 3 6 1 4 1 18 3 5 3 6 5 Retransmit Configuration Manager gt Protocols gt IP gt TFTP 5 Any number of retransmissions Specifies the number of times TFTP retransmits an unacknowledged message before abandoning the transfer attempt Specify the number of retransmissions 1 3 6 1 4 1 18 3 5 3 6 6 Telnet Configuration Parameters Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure the Telnet configuration parameters in the Configuration Manager
65. Parameters Parameters Default Enable Disable Enable Default Volume Volume 2 Login Retries 3 retries Idle Time Out 900 seconds Max Sessions 3 sessions Type of Service Binary Control Connection Low delay Data Transfer High Throughput TCP Window Size 16000 bytes TFTP Parameters Table B 3 lists the Site Manager default parameter settings for TFTP Table B 3 TFTP Parameters Parameter Default Enable Enable Default Volume 2 Retry Time Out 5 seconds Close Time Out 25 seconds Retransmit 5 retransmissions B 2 117358 A Rev A Site Manager Default Settings Telnet Parameters Table B 4 lists the Site Manager default parameter settings for Telnet configuration Table B 4 Telnet Configuration Parameters Parameters Default Manager s Login Script automgr bat User s Login Script autouser bat Force User Logout Disable Table B 5 lists the Site Manager default parameter settings for a Telnet server Table B 5 Telnet Server Configuration Parameters Parameters Default Enable Disable Enable TI Lines per Screen 24 lines TI More Enable TI Prompt None Login Timeout 1 minute Password Timeout 1 minute Command Timeout 15 minutes Login Retries 3 login attempts Diagnostic Report Disable Diagnostic Exercise Disable Diagnostic Network Data Disable Diagnostic PTY Data Disable Diagnostic
66. System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens 4 Choose Global The Edit FTP Global Parameters window opens continued 4 2 117358 A Rev A Customizing FTP Services Site Manager Procedure continued You do this System responds 5 Set the Default Volume parameter Click on Help or see the parameter description on page A 4 6 Click on OK Site Manager saves your changes and exits the window Specifying Number of Login Retries The FTP login retries value is the number of FTP login retries that FTP will accept before rejecting logins Using the BCC By default FTP accepts only 3 FTP login retries To enter the number of retries navigate to the FTP prompt and enter login retries integer integer is the number of retries that FTP allows For example the following command line causes FTP to accept 10 login retries before rejecting logins ftp login retries 10 ftp Using Site Manager Complete the tasks in the following table to specify an FTP login retry value Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens continued 11735
67. System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens Choose FTP The FTP menu opens 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Control Connection parameter Click on Help or see the parameter description on page A 6 6 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A Configuring IP Utilities Specifying a Data Transfer Value The BCC does not support this parameter You can determine how the Internet transport layer handles datagrams on a data transfer connection by specifying a value that indicates the Type of Service that FTP inserts in IP datagrams on a data transfer connection You can use Site Manager to specify the type of service value that FTP inserts in IP datagrams on a data transfer connection Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens select Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Data Transfer parameter Click on Help or see the parameter description on page A 6 6 Click on OK Site Manager saves your changes and exits the window Specifying the TCP Window Size You can
68. TP and NetBIOS over IP Concepts Table 2 3 describes the FTP commands that the FTP server supports on Bay Networks routers Table 2 3 FTP Commands Supported Command Code Description Access Control Commands User Name USER Initiates an FTP session for the user Password PASS Specifies a user s encrypted identification for access control Logout QUIT Terminates the session and closes the control connection Transfer Parameter Commands Data Port PORT Specifies the data port to be used in the data connection Representation TYPE Specifies the data transfer type The server supports transfer Type of ASCII and image binary data Transfer Mode MODE Specifies the transfer mode The server supports stream mode only File Structure STRU Specifies the file structure type The server supports file no record structure only FTP Service Commands Retrieve RETR Causes the server to transfer the specified file to the client Abort ABOR Causes the server to abort the previous FTP service command and any associated transfer of data Store STOR Causes the server to accept the data transferred over the data connection and store it on the server Store Unique STOU Specifies the same operation as the Store command and in addition causes the server to create the resulting file in the current directory under a name unique to that directory Delete DELE C
69. a ERA 1 8 MUN TG BE O rrena e aaia a a iA ai E EAA A aa 1 8 RUS hic Sre WARE siiurioiai oE a tin 1 8 Disabling and Reenabling TOP on the Router sariissacnisaisioniiidniiian eia 1 9 Usmo HN BOC seurina PE E E PE 1 9 Usmo Sie Mandet riirii iona EAE A OE 1 10 SRG RUE FIF EENES aisre Ii iir Ei aAa dust i S E aE AEEA aE S 1 10 Using the BOG jccoieccscancinasrceaiats Seii P Sagi E sited ilies 1 10 Using ane Manag airain te Pee ee eeCT ET fore ee Prony rarer rer rerrer Ty reT re trary et rerere 1 11 Weabinhg and Enabling F TF Sesctv ic tsciccis ce calasingas tea catteg icasita ce didanindh S 1 11 117358 A Rev A v SIE a E ea ees 1 12 Urmo oie MANAGOT nardaran a AAR ERAN ETA ANa ANTA ER 1 12 Staring IFTP Series nacioni ane aiaeteie ieh er a aeeiicere 1 13 Weng ihe BOG sania reer erro Revere ete rene rerer peer rerrreT ere Terr ree reer rer Ter 1 13 Using Site Manager sseeeee detente ETT ii E T 1 13 Disabling and Reenabling TF IP SGrvices siccsissaccsccdcsseedccacsnesiontianicersenieassdictacamiensurcene 1 14 Wer aB e E A A A E E A E T AE E AE NE 1 14 Using Site Manager erena T E E 1 15 Saring eaei SENE EE a aa A a RT 1 15 OE Ti 2B lj al EC G eiiean 1 15 Usmo Sie WAGE reiignis AE EE NESE 1 16 Disabling and Reenabling Telnet Services essssssssssssnesrressrnesntsnnsersnssrnnssnessrenssens 1 17 Using the BCC ee errr rere er errr meno cma Scien ae eoii 1 17 Usmo Sie Manage es oh csi ceca cea hacvaiare cede
70. ack access policy no telnet info on ip state enabled action deny log on service telnet precedence 0 polname no telnet access policy no telnet 117358 A Rev A C 5 Appendix D Configuring IP Accounting on a Frame Relay Interface IP Accounting is a mechanism for counting transit data packets that is packets that IP receives on one interface and forwards out another interface This mechanism allows a network service provider to bill a network user according to the amount of data that it routes between two locations Bay Networks currently provides IP Accounting support for frame relay networks IP Accounting counts all data packets that the router receives on any IP interface and forwards out an IP frame relay interface IP accounting keeps track of transit data packets by making an entry for each packet in an IP accounting table Each entry includes the following fields the source address of the packet the destination address of the packet the number of packets forwarded and the number of bytes forwarded Caution If the frame relay interface becomes overrun and the driver drops packets these packets will still be counted by IP Accounting The following sections show you how to configure IP accounting on a frame relay interface Topic Page Enabling IP Accounting on the Router D 2 Specifying the Maximum Size of the IP Accounting Table D 2 Controlling Notification of a
71. ager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens 4 Choose Create FTP Site Manager creates FTP on the router Disabling and Enabling FTP After you configure IP and start FTP all FTP default values are automatically enabled on the router 117358 A Rev A 1 11 Configuring IP Utilities Using the BCC To disable FTP navigate to the FTP prompt and enter disable For example this command line disables the FTP server on the router ftp disable ftp To reenable FTP navigate to the FTP prompt and enter enable For example the following command sequence reenables FTP on the router ftp enable ftp Using Site Manager Complete the tasks in the following table to enable and disable an FTP server Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose FTP The FTP menu opens 4 Choose Global The Edit FTP Global Parameters window opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 4 6 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Starting TFTP Services
72. ally ensures good terminal server performance on slow speed as well as high speed LAN links TCP services are required to support upper layer protocols such as Telnet and FTP which are part of the TCP IP suite TCP does not require reliability of the communication protocols below itself Therefore TCP functions with lower level protocols that are simple potentially unreliable datagram services TCP uses IP for a lower level protocol 117358 A Rev A 2 1 Configuring IP Utilities How TCP Works TCP is connection oriented Therefore before transferring data you must first establish a logical transport layer connection with a peer user To establish this connection TCP uses what is sometimes called a three way handshake in which the initiating TCP sends a Protocol Data Unit PDU with a synchronize SYN bit set to 1 in its header The responding TCP then sends back a PDU with both the SYN bit and the Acknowledged ACK bit set and possibly some user data Time and if necessary retransmission are used to recover PDUs lost in this process allowing each side to indicate its starting sequence number Because of the possibility of lost or delayed PDUs this three way exchange ensures that connections are established correctly Data transfer is straightforward and follows the procedures for flow control and acknowledgment TCP performs all acknowledgment and assigns all credits in terms of octets A credit of eight 8 then
73. alues for that interface appear in the window 6 Set the Rebroadcast Address parameter as desired Click on Help or see the parameter description on page A 27 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window 8 12 117358 A Rev A Customizing NetBIOS over IP Configuring a Static NetBIOS Name and Address You can add static NetBIOS names to the router These entries are independent of the name entries learned dynamically in the name cache Enabling and Disabling Static Name Caching By default NetBIOS caches the names you have added statically You can use Site Manager to disable this feature Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Static Name The NetBIOS IP Static Entry Table window opens 5 Click on the static entry you want The parameter values for that entry appear in the window 6 Set the Enable parameter Click on Help or see the parameter description on page A 27 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window 117358 A Rev A 8 13 Configuring IP Utilities Specifying the NetBIOS Station Name You can use Site Manager to specify the 1 to 16 characte
74. amps based on the source IP address or an IP subnet address This is similar to an inbound filter that drops NTP packets based on source IP address and IP subnet mask Configuring NTP access control for a time server involves e Specifying the IP address of the remote time server e Specifying a filter type e Specifying an IP subnet mask Specifying the IP Address of the Time Server When you specify the IP address of the remote time server whose access to the local NTP client you want to restrict NTP adds the IP address of the time server to an access control list which the local NTP client uses when querying remote time servers for time information Use the access control option when operating in Broadcast Client and Multicast Client mode To specify the IP address of the remote time server whose access to the local NTP client you want to restrict complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens select Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Access The NTP Access Configuration List window opens 5 Click on Add The NTP Access Configuration window opens continued 7 12 117358 A Rev A Customizing NTP Services Site Manager Procedure continued You do this System responds 6 Set the Acces
75. as the best available time source from which to synchronize its internal clock 2 18 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts 0 TTT TLL A NTP clients o NTP time TTT servers TLL Server A Server B Peer list TTL TT C SSS TCPOO06A Figure 2 6 NTP Time Servers Operating in Unicast Client Mode Broadcast and Multicast Client Mode In broadcast client and multicast client modes the local NTP client will accept NTP packets from every remote time server on the internet provided the IP destination address of the NTP packet matches the IP broadcast address of the local NTP client Once the NTP client receives NTP packets it applies rules based on the NTP protocol to select the remote time server with the greatest accuracy In broadcast client and multicast client modes you can restrict specific time servers from sending NTP packets to an NTP client by configuring access control filters You cannot however configure peers in either broadcast client or multicast client mode We recommend that you use broadcast client mode and multicast client mode when you have many clients on the network and only one remote time server as broadcasting reduces overall traffic volume on the network
76. auses the server to delete the specified file on the server List LIST Causes the server to send to the client a detailed list of files Name List NLST Causes the server to send to the client a list of file names Status STAT Causes the server to send to the client the control connection status If the server receives the command during file transfer the server sends the client the status of the transfer Help HELP Provides helpful information No Operation NOOP Specifies no action Causes the server to send an OK reply continued 117358 A Rev A 2 9 Configuring IP Utilities Table 2 3 FTP Commands Supported continued Command Code Description Change Working CWD Causes the server to change the volume Directory Print Working PWD Causes the server to print its current working directory Directory Implementation specific FTP Commands Compact COMP Causes the server to compact the flash card Use this command after the delete command or when the amount of contiguous space is low You can determine the amount of contiguous space on a router by using the dir command TFTP Overview The Trivial File Transfer Protocol TFTP is a TCP IP standard protocol for transferring files with minimum capability and minimal overhead TFTP is implemented on top of the unreliable connectionless datagram delivery service and is used to move files between network devices
77. box 1 3 6 1 4 1 18 3 5 3 17 3 1 5 A 20 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Source IP Address Select Protocols gt Global Protocols gt NTP Peers None Any valid IP address Allows you to specify a single Internet protocol address that NTP uses to override the source address of the interface from which the NTP packet is transmitted You use this parameter only when you want the remote time server to filter NTP packets based on IP source address We recommend using a circuitless IP address as the source IP address If you do not specify a source IP address NTP uses the IP address of the outbound router IP interface address Specify the source IP address of a remote time server in the Source IP Address selection box 1 3 6 1 4 1 18 3 5 3 17 3 1 7 Peer Preference Select Protocols gt Global Protocols gt NTP gt Peers No Yes No Allows you to specify whether the local NTP client will prefer accept or rejects NTP packets from the remote time server When you select Yes the local NTP client prefers accepts NTP packets from the remote time server and synchronizes its internal clock to it When you select No the local NTP client rejects packets from the remote time server 1 3 6 1 4 1 18 3 5 3 17 3 1 8 117358 A Rev A A 21 Config
78. break the connections consuming the most memory to maintain connections consuming less memory TCP and IP Service Users TCP is the layer between IP and protocols running at higher layers in the network hierarchy Figure 2 1 shows a simple network architecture with four users of TCP IP services data link switching DLSw Telnet FTP and BGP TCPOOOLA Figure 2 1 TCP between IP and Clients 2 6 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts The interface between TCP and programs that use TCP consists of a set of messages exchanged between the clients and TCP and a set of functions and macros that user programs call to exchange TCP messages These programs use the functions and macros to e Open close abort and get the status of connections e Control the flow of data e Encapsulate data for TCP to transmit e Process received TCP data When a program passes data to TCP the TCP layer formats the data and calls on the IP layer to transmit the data to its destination For information on creating TCP on the router see Chapter 1 For information on editing TCP parameters see Chapter 3 FTP Overview The File Transfer Protocol allows files to be transferred from a server to an FTP client or from an FTP client to the server FTP ensures the integrity of data transferred from one system to another Using FTP you can log in to a remote host identify yourself list remote directories co
79. characters or fewer 1 3 6 1 4 1 18 3 5 3 7 1 22 Force User Logout Protocols gt Global Protocols gt Telnet Server gt Global Disable Enable Disable Specifies whether the user can press control c to cancel a user autoscript at login when a user autoscript is in effect Set the parameter to Enable to prevent using control c to cancel the user autoscript at login Set the parameter to Disable to allow the user to press control c to cancel the user autoscript at login 1 3 6 1 4 1 18 3 5 3 7 1 23 TI History Depth Protocols gt Global Protocols gt Telnet Server gt Global 20 1 to 40 commands Specifies the maximum number of Technician Interface commands stored in the local command history table The table stores each command you enter at the Technician Interface prompt on a first in first out FIFO basis Set the maximum number of commands that you want the router to store for subsequent recall with the Technician Interface history command 1 3 6 1 4 1 18 3 5 3 7 1 24 117358 A Rev A Configuring IP Utilities Telnet Client Global Parameters Parameter Path Default Range Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure the global parameters in the Edit Telnet Client Global Parameters window Enable Disable Protocols gt Global Protocols gt Telnet Client gt Global E
80. choices Do not type the vertical line when entering the command Example If the command syntax is show at routes nets you enter either show at routes or show at nets but not both Address Resolution Protocol Asynchronous Transfer Mode Bay Command Console Border Gateway Protocol Defense Advanced Research Projects Agency formerly ARPA data link switching Department of Defense first in first out File Transfer Protocol Greenwich Mean Time Institute of Electrical and Electronic Engineers Intelligent Link interface Internet Protocol Network Basic Input Output System Network Time Protocol permanent virtual circuit Protocol Data Unit Switched Multimegabit Data Services 117358 A Rev A xix Configuring IP Utilities SNAP Subnetwork Access Protocol SNMP Simple Network Management Protocol SRM system resource module SVC switched virtual circuit TCP Transmission Control Protocol TCP IP Transmission Control Protocol Internet Protocol TFTP Trivial File Transfer Protocol UDP User Datagram Protocol WAN wide area network Ordering Bay Networks Publications To purchase additional copies of this document or other Bay Networks publications order by part number from Bay Networks Press at the following numbers e Phone U S Canada 888 422 9773 e Phone International 510 490 4752 e FAX U S Canada and International 510 498 2609 The Bay Networks Press catalog is available on the World Wide Web at s
81. de parameter Click on Help or see the parameter description on page A 18 6 Choose the mode in which you want NTP to run Unicast Client Client Broadcast Client BClient e Multicast Client MClient 7 Click on OK 117358 A Rev A Configuring IP Utilities Configuring Remote Time Servers You configure remote time servers peers for time synchronization in Unicast Client mode only Configuring a remote time server involves e Adding remote time servers e Specifying the configuration peer mode for the time server e Setting the mode of operation of the router e Specifying a source IP address for the time server e Specifying peer preference e Deleting peers Adding Remote Time Servers You add remote time servers to the router by specifying the IP address of each time server peer NTP adds the IP address of the time server to a peer list which the local NTP client uses when querying remote time servers for time information Bay Networks recommends that you configure a minimum of three upper stratum remote time servers peers for a router since it can apply an agreement algorithm to detect a problem on any part of the time source You can if necessary add a maximum of five remote time servers on a device router for example Configuring multiple remote time servers ensures redundancy in case one peer fails unexpectedly Using the BCC To specify the IP address of each peer that you want
82. do this System responds on page A 25 6 Set the Enable Disable parameter Click on Help or see the parameter description 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window Enabling Name Caching on the Interface By default NetBIOS name caching is enabled on the interface You can use Site Manager to disable this interface from caching the name of each NetBIOS server active in the network Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Interface The NetBIOS IP Interface Table window opens 5 Click on the IP interface you want The parameter values for that interface appear in the window 6 Set the NetBIOS Name Caching parameter as desired Click on Help or see the parameter description on page A 26 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window Choose Disable if you want to release system memory and processing resources otherwise dedicated to server name caching 8 10 117358 A Rev A Customizing NetBIOS over IP Disabling Inbound and Outbound Broadcasts By default NetBIOS can receive inbound broadcasts on the interface and send outbound
83. e 1 6 Using the BCC To start a Telnet server on the router with default settings begin in configuration mode at the box level prompt 1 Navigate to the Telnet context box telnet telnet Configure a Telnet server telnet server 117358 A Rev A Configuring IP Utilities Display Telnet server default settings server info on telnet state enabled manager script automgr bat lines 24 more enabled prompt login timeout 1 password timeout 1 command timeout 15 login retries 3 auto user script force logout disabled history 20 server To start a Telnet client on the router with default settings begin in configuration mode at the box level prompt 1 Configure a Telnet client telnet client Display Telnet client default settings client info on telnet state enabled debug log flag off remote port 23 prompt client Using Site Manager You can easily start Telnet services using default parameter values If you decide to change some or all of the defaults refer to the instructions in Chapter 6 For a list of Telnet parameters see Appendix B Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP To start a Telnet server perform the following actions Site Manager Procedure You do this S
84. e Type of Service value that FTP inserts in IP datagrams on a data transfer connection Choose the option that determines how the Internet transport layer handles datagrams on a data transfer connection 1 3 6 1 4 1 18 3 5 3 10 1 9 TCP Window Size Protocols gt Global Protocols gt FTP gt Global 60000 bytes 5000 to 64000 bytes Specifies the size of the windows used for TCP connections Determine the window size you require and specify the size in bytes 1 3 6 1 4 1 18 3 5 3 10 1 10 A 6 117358 A Rev A Parameter Descriptions TFTP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Enable Configuration Manager gt Protocols gt IP gt TFTP Enable Enable Disable Specifies whether TFTP is enabled for the IP router Select Enable to enable TFTP for the IP router Because TFTP allows write access to the router s file system we recommend that you do not enable TFTP in network environments in which you are concerned with security Select Disable to disable TFTP for the IP router 1 3 6 1 4 1 18 3 5 3 6 1 Default Volume Configuration Manager gt Protocols gt IP gt TFTP 2 112131415l61718l9110111112113114 Specifies which of the router s slots will be used by default for all TFTP GETs and
85. e a remote time server peer NTP deletes the IP address of that time server from the NTP peer list 7 10 117358 A Rev A Customizing NTP Services Using the BCC To delete a remote time server peer navigate to the peer specific prompt and enter delete For example the following command line deletes the time server 3 3 3 3 peer 3 3 3 3 delete ntp Using Site Manager To delete remote time servers from a router complete the tasks in the following table Site Manager Procedure You do this System responds 1 Inthe Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Peers The NTP Peers Configuration List window opens 5 Click on the IP address of the time server that you want to delete from the NTP Peer list 6 Click on Delete The IP address for the time server you selected is removed from the NTP Peer list 7 Click on Done The NTP Peers Configuration List window closes and the Configuration Manager window opens 117358 A Rev A 7 11 Configuring IP Utilities Configuring NTP Access Control The BCC does not support the functions described in this section The access control feature allows you to selectively restrict NTP clients from accepting NTP timestamps from specific remote time servers on the Internet by filtering these timest
86. e parameter 8 7 A 24 NetBIOS Name Caching parameter global NetBIOS A 22 NetBIOS global 8 4 NetBIOS interface 8 10 A 26 NetBIOS over IP 2 20 adding a traffic filter 8 17 adding to an interface 1 23 aging a cache entry 8 6 configuring a cache 8 3 configuring a static name 8 13 creating MIB instance for cached name 8 5 customizing a cache search 8 8 datagram service 2 21 defaults B 5 enabling and disabling 1 24 8 9 inbound and outbound broadcasts 8 11 name caching 8 4 8 10 static name caching 8 13 Insertion of Record Route option 8 2 name service 2 20 rebroadcast address for 8 12 session service 2 21 size of name cache for 8 6 station address 8 15 name 8 14 TTL value for a rebroadcast packet 8 2 NetBIOS Scope ID parameter 8 16 A 27 A 28 NetBIOS Station Name parameter 8 14 A 28 NetBIOS IP parameters global Rebroadcast Record Route 8 2 interface Enable NetBIOS Outbound Broadcasts 8 12 Enable Disable A 25 Network Basic Input Output System NetBIOS over IP 2 20 117358 A Rev A O Outbound Telnet 2 11 See also Telnet Client out of order caching 2 3 P ports 2 4 publications ordering xx R Rebroadcast Address parameter 8 12 A 27 Rebroadcast Packet TTL parameter 8 2 A 25 Rebroadcast Record Route parameter 8 3 A 25 Retransmit parameter A 8 Retry Time Out parameter A 7 S sequence numbers 2 3 Simple Network Management Protocol SNMP 2 11 defaults B 5 B 6
87. e the total number of unique NetBIOS server names active in the network by 10 e Adjust the quotient to the nearest higher or lower prime number A prime number can only be divided by itself or by 1 and still yield a whole number quotient e Replace the default value with the new calculated number Increasing the number of hash table entries does not increase the number of names that a router can cache With larger networks increasing the size of the hash tables may however reduce internal cache lookup time thereby improving overall performance Configuring NetBIOS on an IP Interface NetBIOS software on the router communicates with NetBIOS clients and servers through IP interfaces that have been configured with NetBIOS Enabling and Disabling NetBIOS on an Interface When you configure NetBIOS on an interface NetBIOS is automatically enabled You can use Site Manager to disable and reenable NetBIOS on the interface Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Interface The NetBIOS IP Interface Table window opens 5 Click on the IP interface you want The parameter values for that interface appear in the window continued 117358 A Rev A 8 9 Configuring IP Utilities Site Manager Procedure You
88. easetoaniacereatcucudinansvicombabanaces B 1 Table B 2 FTP Coniiguration Parameters s srsccscsinissississirsnici knina B 2 Table B 3 TRIR FA are lS E O B 2 Table B 4 Telnet Configuration Parameters cceeeeee PE B 3 Table B 5 Telnet Server Configuration Parameters cccccccceeceeeeseeeeeeeeeeesaeeeeees B 3 Table B 6 Telnet Client Configuration Parameters cccceeeceeseseeeeeeeeeeeeeetees B 4 Table By NIP Coniiguration Parameters lt sreishsiunisi ien aa B 4 Table B 8 NeBlOSAP Global Paramete suniownrkidniikaidn iina B 5 Table B 9 NetBIOS IP Interface Table Parameters cs cceseceeeeseeseeteeeeneeeeees B 5 Table B 10 NetBIOS IP Static Entry Table Parameters ccccscesseeeeeeeeeeseeeeeees B 6 Table Baii IP Accounting Paametals scsi disasscluwrcstiaeniasideanedudstderedanssedauat B 6 117358 A Rev A XV About This Guide If you are responsible for configuring TCP FTP TFTP Telnet NTP NetBIOS over IP services and configuring IP Accounting on a frame relay interface you need to read this guide TCP FTP TFTP Telnet NTP NetBIOS over IP and IP Accounting are application protocols that use the Internet Protocol IP for message transport To use one of them on a router interface you must enable IP services on that interface TM You can now use the Bay Command Console BCC to configure these protocols on a Bay Networks router In this guide you will find instructi
89. eceeeeds 7 6 SENG Local HOST MOUE siriiiariiaiaina A 7 7 Specifying the Source IP Address E E E A E ET 7 8 POPC ERI Feer PROTONS ois acts cccmanae cecaemnessccesnuteraiasamanieieateaacdscuaramedelvaciegautcemaacs 7 9 Deleting Remote Time Servers from a Router ccecsceeeeeeeeeeeeeeeeeeeeeaeeeteneeeeaes 7 10 Configuring NTP Access Control ere eer rere rere cere eer urode 7 12 Specifying the IP Address of the Time Server cccceesseeeeeeeeeeneeeeeeeeeteaeeeeeeeees 7 12 Specifying a Filter Type and IP Subnet Mask 00 cecceeesee cece eeeeeeeeeeeeeeaaeeeeneeees 7 13 Deleting Access Tor a Time Servet oncion 7 14 Chapter 8 Customizing NetBIOS over IP Specifying a TTL Value for a Rebroadcast Packet euroen E E 8 2 Enabling the Insertion of Record Route Option cx sicccciieseeidavieetedcceidiwacuoneses 8 2 Gonigurmo a NetBIOS Coche cise cisertacesnsssancaa cd astachouwalasdidnsnduiblseantatindeauuiidbneediatxdealetes 8 3 Enabling Name Caching Gri the ROUE ics cdancedcicaseseecicdenscteisaanaacadecerasereanitenadcicrasines 8 4 Creating a MIB Instance for a Cached Name ssessssesseeessssrnsesrrssrnnssnnessnnssessne 8 5 Specifying the Size of the Name Cache T Gees E rere 8 6 Aang a Cache AY isiin ti ccecte tienen ae eae aca 8 6 SSOP Esra ls ilradld s A Cathe GEAG apie a 8 8 Configuring NetBIOS on an IP Interface ceeeeeeee PEE PEE ee Enabling and Disabling NetBIOS on
90. echnical Data and Computer Software clause at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Statement of Conditions In the interest of improving internal design operational function and or reliability Bay Networks Inc reserves the right to make changes to the products described in this document without notice Bay Networks Inc does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Portions of the code in this software product are Copyright 1988 Regents of the University of California All rights reserved Redistribution and use in source and binary forms of such portions are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation advertising materials and other materials related to such distribution and use acknowledge that such portions of the software were developed by the University of California Berkeley The name of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED
91. ee shall not sublicense assign or otherwise disclose to any third party the Software or any information about the operation design performance or implementation of the Software and user manuals that is confidential to Bay Networks and its licensors however Licensee may grant permission to its consultants subcontractors and agents to use the Software at Licensee s facility provided they have agreed to use the Software only in accordance with the terms of this license 3 Limited warranty Bay Networks warrants each item of Software as delivered by Bay Networks and properly installed and operated on Bay Networks hardware or other equipment it is originally licensed for to function substantially as described in its accompanying user manual during its warranty period which begins on the date Software is first shipped to Licensee If any item of Software fails to so function during its warranty period as the sole remedy Bay Networks will at its discretion provide a suitable fix patch or workaround for the problem that may be included in a future Software release Bay Networks further warrants to Licensee that the media on which the Software is provided will be free from defects in materials and workmanship under normal use for a period of 90 days from the date Software is first shipped to Licensee Bay Networks will replace defective media at no charge if it is returned to Bay Networks during the warranty period along with proof of the date of shi
92. eement algorithm to detect a problem on any part of the time source NTP Modes of Operation NTP provides three modes of operation or associations in which time servers and NTP clients can communicate with each other in the synchronization subnet unicast client mode broadcast client mode and multicast client mode Currently Bay Networks supports only NTP client mode NTP forms an association when two remote time servers exchange messages and one or both of them create and maintain an instantiation of the router Unicast Client Mode Unicast client mode is the recommended mode of operation Use unicast client mode to configure a set of remote time servers or peers for time synchronization You can also configure access control filters for time servers in unicast vlient mode but normally you would perform this operation in broadcast client or multicast client mode For more information on performing these tasks see Chapter 7 When you configure a set of remote time servers peers NTP creates a peer list that includes each time server s IP address The NTP client uses the peer list to determine which remote time servers to query for time information When the NTP client queries the remote time servers they respond with various time stamps along with information about their clocks such as stratum precision and time reference Figure 2 6 The NTP client reviews the list of responses from all the available servers and chooses one
93. eer list the servers respond with various timestamps along with information about their clocks such as stratum precision and time reference The local NTP client reviews a list of responses from all the available servers and chooses one server as the best time source from which to synchronize its internal clock 117358 A Rev A Configuring IP Utilities Setting Config Peer Mode You can specify the mode in which a remote time server operates on the Internet by setting the Config Peer Mode parameter Since NTP operates locally in Client mode only all remote time servers known to the local NTP client are servers Using the BCC By default Config Peer Mode is set to Server indicating that the local NTP client adjusts its clock to the given remote time server but does not attempt to adjust the time server s clock To specify the mode in which a remote time server operates enter mode mode_type mode_type is either server or peer For example the following command line sets the mode in which the remote server 3 3 3 3 will operate to peer peer 3 3 3 3 mode peer peer 3 3 3 3 info on ntp address 3 3 3 3 mode peer src ip address 0 0 0 0 Using Site Manager To specify the mode for the remote time server peer complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2
94. er gt Global Disable Enable Disable Specifies whether the Technician Interface displays a record of processing operations Used for diagnostic purposes only Accept the default Disable This parameter is for field service personnel only 1 3 6 1 4 1 18 3 5 3 7 1 15 Diagnostic Exercise Protocols gt Global Protocols gt Telnet Server gt Global Disable Enable Disable Used for diagnostic purposes only Accept the default Disable This parameter is for field service personnel only 1 3 6 1 4 1 18 3 5 3 7 1 16 Diagnostic Network Data Protocols gt Global Protocols gt Telnet Server gt Global Disable Enable Disable Specifies whether the Technician Interface displays Telnet protocol information Used for diagnostic purposes only Accept the default Disable This parameter is for field service personnel only 1 3 6 1 4 1 18 3 5 3 7 1 17 117358 A Rev A Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Diagnostic PTY Data Protocols gt Global Protocols gt Telnet Server gt Global Disable Enable Disable Specifies whether the Technician Interface displays pseudo terminal driver PTY information Used for diagnostic purposes only Accept the default Disable This para
95. erride the IP interface source address peer 3 3 3 3 src ip address 4 4 4 4 peer 3 3 3 3 7 8 117358 A Rev A Customizing NTP Services Using Site Manager To specify the source IP address of a remote time server complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Peers The NTP Peers Configuration List window opens 5 Click on the IP address of the time server that appears in the NTP Peer list 6 Set the Source IP Address parameter Click on Help or see the parameter descriptions on page A 21 7 Click on Apply NTP uses the source IP address that you specify to override the source address of the interface from which the NTP packet is transmitted 8 Click on Done The NTP Peers Configuration List window closes and the Configuration Manager window displays Specifying Peer Preference The BCC does not support this function The Peer Preference parameter allows you to specify a list of remote time servers peers that are preferred by the local NTP client above and beyond the criteria for selecting peers stratum setting closest and claimed higher precision By default the Peer Preference option value is set to No This means that t
96. escnncesseqnidecensiaias P EAT EE T 2 13 DIT aiinarie hae htmnee batennierncbenwmiedesacundies saticednedecdenandenaus cananedssecddnedesaceanmenssrennebeuiantns 2 15 Understanding NEP C2 dca 1 515 a ee ene ee era etre coer aie Cee rene eaaa ar Tren re 2 15 NTP System Implementation Model cccccceseeeeeeeeeesseeeeeeees E E A E 2 15 Understanding How NTP Distributes Time Within the Subnet cc cceeeeee 2 17 Synchronizing with the Best Available Time Server neseser 2 17 NTP Modes or EP AMIOIN nencia aaa E EE E OE OEEk 2 18 Licas aigat MONE iraran NE 2 18 Broadcast and Multicast Client Mode Seis rere errr S SES 2 19 NeIBIOS Wero aragia a 2 20 NetBIOS in an IP Environinoni arias cesensedescsecisanedawaardnedasendeepnribinnanelloitbeinsiicutin hneanies 2 21 Forwarding Name Queries over an Unnumbered Interface ccceesseeeeseereeees 2 24 Chapter 3 Customizing TCP Services Setting Minimum Retransmission Timeout ere OEE EE E EA aks ee Setting Maximum Retransmission TIMEOUT sinisiraan annaia 3 3 Settimo Maximum Window Size DyteS ismsisisisiiisiispiiiininniininiinin iain aiaia 3 4 Chapter 4 Customizing FTP Services Specio he FIP Geta YONIME sunkia 4 2 Specifying Number of Login Retries aeii aiarad ee Ce eee Greene 4 3 epeciving Maximum FTP ldle TIMEOUT sireisas ie ards 4 4 Specifying the Maximum Number of FTP Sessions ccc ccsesceeeeeeeeeeeeeeeneeeesaeeeeneees 4 5 Speci
97. essing the packet if required If alternate paths exist between different network segments broadcasting loops can occur To prevent such loops the router 1 Stamps the data portion of the IP packet with the IP address of the router from which the packet was rebroadcast 2 Parses the IP addresses included in the data portion of the IP packet to determine if the packet has already been rebroadcast by that router In Figure 2 8 for example client C on the network connected to router B wishes to communicate with server S which is located on the network connected to router A 117358 A Rev A 2 21 Configuring IP Utilities The following steps occur 1 The client issues a name query request to NetBIOS on the host specifying the server application by its NetBIOS name The IP service on the host broadcasts the name query request 2 Router B receives the name query request determines that it is a broadcast message and rebroadcasts it out each of its NetBIOS interfaces except for the one on which it arrived Router A receives the broadcast equest and rebroadcasts to its local network 4 The server on router A receives the IP broadcast request and recognizes its own name Router A c gt Router B gt Router C o Router D Key Client Server NetBIOS IP Interface IP0033A Figure 2 8 Broadcasting a Name Query Request
98. ether it has received this packet before on this interface If so the router drops it 8 2 117358 A Rev A Customizing NetBIOS over IP By default the NetBIOS Insertion of Record Route option in rebroadcast packets is disabled You can use Site Manager to enable the option Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens Choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Rebroadcast Record Route parameter Click on Help or see the parameter description on page A 25 6 Click on OK Site Manager returns you to the Configuration Manager window If all IP entities support this option enable it on the router Configuring a NetBIOS Cache NetBIOS is a broadcast intensive protocol Much of the broadcast overhead is related to maintaining unique names across the network and providing end users with access to NetBIOS applications The amount of overhead grows with the number of NetBIOS resources applications servers and clients on the network To keep broadcast traffic to a minimum each router that runs NetBIOS over IP builds and maintains a cache of NetBIOS name IP address pairs using information contained in the name query responses it receives and forwards In Figure 2 9 on page 2 23 for example
99. etwork contains an internal system clock that is used to maintain accurate time for the internet device The internal system clock on most local devices is set by eye or by wristwatch to within a minute or two of the actual time and is rarely reset at regular intervals Many of these clocks are battery backed devices that use room temperature clock oscillators that can drift as much as several seconds each day NTP solves this problem by automatically adjusting the time of the internet devices so they are synchronized within milliseconds The current implementation of NTP supports only NTP Client mode In this mode the local NTP client which runs on a router accepts time information from other remote time servers and adjusts its clock accordingly However the NTP local client will not attempt to synchronize another device s clock Understanding NTP Terminology An NTP peer can be any Internet device that runs NTP software However the current implementation of NTP refers to peers as remote time servers that provide time information to other time servers on the internet and to the local NTP client An NTP client refers to the local internet device in this case a router that accepts time information from other remote time servers NTP System Implementation Model NTP is based on a hierarchical model that consists of a local NTP client which runs on the router and a number of remote time servers The NTP client sends requests for time
100. exits the window Pausing Telnet Console Output By default Telnet console output pauses after each screen fills with data You can configure Telnet not to pause after each screen fills with data by disabling this feature Using the BCC To configure the Telnet console output to pause navigate to the Telnet specific prompt and enter more For example the following command line prevents Telnet console output to pause server more disabled server 6 8 117358 A Rev A Customizing Telnet Services Using Site Manager Complete the tasks in the following table to specify whether to pause Telnet console output Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the TI More parameter Click on Help or see the parameter description on page A 11 6 Click on OK Site Manager saves your changes and exits the window Changing the Telnet Login Prompt You can change the Telnet login prompt on the Telnet console screen by specifying a character string from 1 through 18 alphanumeric characters Using the BCC To change the Telnet login prompt on the Telnet console screen navigate to the server specific
101. fig Peer Mode 7 6 Setting Local Host Mode 7 7 Specifying the Source IP Address 7 8 Specifying Peer Preference 7 9 Deleting Remote Time Servers from a Router 7 10 Specifying the IP Address of the Time Server 7 12 Specifying a Filter Type and IP Subnet Mask 7 13 Deleting Access for a Time Server 7 14 This chapter describes how to customize NTP services on the router It assumes you have configured IP on an interface and started NTP using the default parameters as described in Chapter 1 and that you understand the NTP concepts described in Chapter 2 After you start NTP on the router NTP default values are in effect for all NTP parameters see parameter descriptions in Appendix A You customize NTP by modifying these parameters as described in the following sections 117358 A Rev A 7 4 Configuring IP Utilities Disabling and Reenabling NTP Using the BCC To disable NTP services navigate to the NTP prompt and enter disable For example the following command line disables NTP on the router ntp disable ntp To reenable NTP services navigate to the NTP prompt and enter enable For example the following command line reenables NTP on the router ntp enable ntp Using Site Manager To disable and reenable NTP on the router complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choo
102. fying the Data Transmission Type s es EEE apoia 4 6 Speciying die FIP Control Connecn disiinc S tinaess 4 7 OCI Data WISIN VAN ainsi cass csnaarra des eniinn aE Adaa aa 4 8 Speciying he TCP WNow SIZE ersan inski EA 4 8 Chapter 5 Customizing TFTP Services Specifying the Default Volume for the Router E E PE 5 1 117358 A Rev A vii Speciying a Hetty TMe VAIS rirni nse ema 5 3 EPOCIV ING a Close Mime OUT VANE ssi ccsnciecetcivarssbaduniusisdsaraie scanasdeaseuadasinteanaitissaniaasets 5 4 Specifying the Number of Retransmissions sccccsticcieyccseaptieaea emer cian ictnael 5 5 Chapter 6 Customizing Telnet Services Customizing the Telnet Configuration T E E EE E apaa ia 6 2 Changing the Name of the Manager s beaks Script Fils Rina ED 6 2 Changing the Name of the User s Login Script File esecesseeseeessceeeeeeeeeeeenee 6 3 Enabling and Disabling User Lg Qott siciscstecteasdtigesntiietinateat iad ected 6 4 Customizing the Telnet Server on the Router ccecceeeeeeeeeeeeeeeeeeeeeeaeseeeneeestaeeteeaeees 6 5 Enabling and Disabling a Telnet Server on the IP Router sses 6 6 Specifying the Maximum Number of Lines on the Technician Interace Console isin ci cisecnccimeninnnsnnagareimenniennta Tamales 6 7 Pausing Tenet Console OUDIT scdececansceeisccodacticcccanieiadstenacbeentaaes E a Aaaa aaa 6 8 Changing the Telnet Login Prompt wissen ions snesmiNiaen aaa 6 9 Changing the Login Timeout
103. he local NTP client rejects packets from the remote time sever 117358 A Rev A Configuring IP Utilities You can enable peer preference for a remote time server by changing the Peer Preference option value to Yes This means that the local NTP client prefers accepts packets from the remote server and synchronizes its internal clock to this server Complete the tasks in the following table to specify whether the local NTP client will prefer or reject NTP packets from the remote time server Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Peers The NTP Peers Configuration List window opens 5 Click on the IP address of the time server that displays in the NTP Peer list 6 Set the Peer Preference parameter Click on Help or see the parameter descriptions on page A 21 7 Click on Apply When you select Yes the local NTP client prefers accepts NTP packets from the remote time server and synchronizes its internal clock to it When you select No the local NTP client rejects packets from the remote time server 8 Click on Done The NTP Peers Configuration List window closes and the Configuration Manager window displays Deleting Remote Time Servers from a Router When you delet
104. he lookup time thereby improving overall performance 1 3 6 1 4 1 18 3 5 3 11 1 10 A 24 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Rebroadcast Packet TTL Configuration Manager gt Protocols gt IP gt NetBIOS gt Global 5 1 to 255 seconds Specifies the time to live value in seconds to use in rebroadcast packets Use this parameter to restrict the number of routers a rebroadcast packet can traverse To prevent NetBIOS broadcast packets from traversing the network indefinitely set the parameter to a minimal value 1 3 6 1 4 1 18 3 5 3 11 1 13 Rebroadcast Record Route Configuration Manager gt Protocols gt IP gt NetBIOS gt Global Disable Enable Disable Enables and disables the Insertion of Record Route option in rebroadcast packets If all IP entities support this option select Enable to allow the NetBIOS entity in the router to determine whether it has received this packet before on this interface If so the router drops it This option prevents rebroadcast packets from looping forever 1 3 6 1 4 1 18 3 5 3 11 1 14 NetBIOS IP Interface Table Parameters Parameter Path Default Options Function Instructions MIB Object ID Enable Disable Configuration Manager gt Protocols gt IP gt NetBIOS gt Interface Enable
105. hoose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on A 25 6 Click on OK Site Manager returns you to the Configuration Manager window Adding NetBIOS to an IP Interface To add NetBIOS to an IP interface complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on the connector to which you want to add NetBIOS services Site Manager highlights the connector 2 Click on Edit Circuit The Circuit Definition window opens 3 Choose Protocols The Protocols menu opens 4 Choose Add or Delete The Select Protocols window opens 5 Click on NetBIOS Site Manager highlights the selection 6 Click on OK Site Manager returns you to the Circuit Definition window 7 Choose File The File menu opens 8 Choose Exit Site Manager returns you to the Configuration Manager window 117358 A Rev A 1 23 Configuring IP Utilities Enabling and Disabling NetBIOS on a Router When you start NetBIOS on the router NetBIOS is automatically enabled To disable and reenable NetBIOS over IP complete the following tasks Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens Choose Protocols 2 Choose IP The IP menu opens 3
106. hoose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Client The Telnet Client menu opens 4 Choose Global The Edit Telnet Client Global Parameters window opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 16 6 Click on OK You return to the Configuration Manager window 117358 A Rev A 1 19 Configuring IP Utilities Starting NTP Services You can use the BCC command line interface or the Site Manager graphical user interface to configure NTP on the router using default values for all parameters Before you begin Verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 Verify that the remote time servers that you want to configure on the network are reachable via IP To do this you must ping the IP address of the time server you want to configure If the server you want to configure is not on the local network you will need to configure the appropriate IP routing protocol such as RIP or OSPF For information on pinging a server or configuring routing protocols refer to Configuring IP Services Using the BCC To start NTP services on the router with default settings begin in configuration mode at the box level prompt 3 Configure NTP box ntp ntp Display NTP default settings ntp info on box state enabled Using Site
107. ies Site Manager Procedure continued You do this System responds 4 Choose Access The NTP Access Configuration List window opens displaying the IP address of each time server 5 Click on the IP address of the time server whose access you want to restrict 6 Set the following parameters The Filter Type Selection box opens Filter Type e Access IP Mask Click on Help or see the parameter descriptions on page A 19 7 Click on Apply 8 Click on Done The NTP Peers Configuration List window closes and the Configuration Manager window opens Deleting Access for a Time Server When you delete access for a remote time server peer NTP removes the IP address of the time server whose access you restricted from the access control list 7 14 117358 A Rev A Chapter 8 Customizing NetBIOS over IP Topic Page Specifying a TTL Value for a Rebroadcast Packet 8 2 Enabling the Insertion of Record Route Option 8 2 Configuring a NetBIOS Cache 8 3 Configuring NetBIOS on an IP Interface 8 9 Configuring a Static NetBIOS Name and Address 8 13 Supplying a Scope Identifier 8 16 Adding a Traffic Filter to a NetBIOS Interface 8 17 This chapter describes how to customize NetBIOS over IP services on the router It assumes you have configured IP on an interface and started NetBIOS using the default parameters as described in Chapter 1 and that yo
108. ies a value a percentage of the maximum number of entries in the accounting table that causes IP Accounting to send a trap message Specify a percentage that meets the requirements of IP Accounting on this router 1 3 6 1 4 1 18 3 5 20 1 1 5 117358 A Rev A A 29 Configuring IP Utilities Parameter IP Accounting Checkpoint Flag Path Configuration Manager gt Protocols gt IP gt Global Default 0 Options 0 to Ox7FFFFFFF Function Allows you to specify when IP Accounting takes a snapshot of the active table and puts it in the checkpoint table Instructions Specify a flag value that meets the requirements of IP Accounting on this router MIB Object ID 1 3 6 1 4 1 18 3 5 20 1 1 7 A 30 117358 A Rev A Appendix B Site Manager Default Settings This appendix lists the Site Manager default settings for TCP FTP TFTP Telnet NTP NetBIOS over IP and IP Accounting Use the Configuration Manager to edit any of the Site Manager default settings listed here TCP Parameters Table B 1 lists the default parameter settings for TCP Table B 1 TCP Configuration Parameters Parameter Default Enable Disable Enable Min Retransmission Timeout 250 ms Max Retransmission Timeout 240000 ms Max Window Size 4096 bytes 117358 A Rev A B 1 Configuring IP Utilities FTP Parameters Table B 2 lists the Site Manager default parameter settings for FTP Table B 2 FTP Configuration
109. igns the entry a short time to live If the entry is valid the router will receive a positive name query response which will validate the entry from the server within the specified time to live If the entry is invalid the name query request will not reach the server In this case the entry quickly ages out By default inactive NetBIOS names expire from the NetBIOS name cache after 300 seconds You can use Site Manager to specify any time value that can rapidly age infrequently referenced names out of the NetBIOS name cache Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Name Cache Age parameter Click on Help or see the parameter description on page A 24 6 Click on OK Site Manager returns you to the Configuration Manager window Choose an aging value that allows infrequently referenced or obsolete server names to expire from the name cache The smaller the value the less efficient broadcast reduction is but the more quickly the network recovers topology changes 117358 A Rev A 8 7 Configuring IP Utilities Customizing a Cache Search The mechanism that NetBIOS uses to search for a name in the cache is based on a fast string hash search
110. imeout 6 11 Changing the Command Timeout 6 12 Changing Login Retries 6 14 Using Telnet Server Diagnostics 6 15 Changing the History File 6 18 Enabling and Disabling a Telnet Client on the IP Router 6 19 Enabling and Disabling Verbose Debug Logging 6 21 Changing the Remote Port 6 22 Changing the Command Prompt 6 23 117358 A Rev A 6 1 Configuring IP Utilities This chapter describes how to customize Telnet services on the router It assumes you have configured IP on an interface and started Telnet using the default parameters as described in Chapter 1 and that you understand the Telnet concepts described in Chapter 2 After you start Telnet services on the router default values are in effect for all Telnet configuration parameters see parameter descriptions starting on page A 8 You may want to change these parameter values depending on the requirements of your network The following sections describe information you supply and options you select that affect the way the Telnet runs on the router Customizing the Telnet Configuration After you start the Telnet server to establish inbound Telnet sessions on the router the script files for the Manager s Login User s Login and Force User s Login run automatically when you log in You can accept these defaults or customize the Telnet configuration by changing these scripts as needed Changing the Name of the Manager s Login Script File By default the name
111. imum Number of Lines on the Technician Interface Console You can specify the maximum number of lines displayed on the Telnet console screen The screen may override the number of lines you specify if Telnet can negotiate the window size with the remote client Make sure that the number that you Set is in accordance with your console requirements Using the BCC By default the maximum number of lines displayed on the Telnet screen is 24 To specify the maximum number of lines displayed on the Telnet screen enter lines integer integer is the maximum number of lines that the console screen can display For example the following command line sets the maximum number of lines displayed on a Telnet console screen to 50 server lines 50 server 117358 A Rev A 6 7 Configuring IP Utilities Using Site Manager Complete the tasks in the following table to specify the maximum number of lines displayed on a Telnet console screen Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the TI Lines per Screen parameter Click on Help or see the parameter description on page A 10 6 Click on OK Site Manager saves your changes and
112. in copies of outbound data in case they must be retransmitted e Retain copies of inbound data in case they are received out of order and must be rearranged e Manage the TCP connections The amount of memory used per TCP connection is dynamic Each connection uses a small amount of overhead memory less than 1 KB even if the connection is idle As the size of the transmit and receive window increases so does the memory for connections It expands as much as TCP allows You can control the window size by setting a value for the Max Window Size parameter in the Edit TCP Global Parameters window see Chapter 3 The maximum amount of memory TCP can use for a connection is equal to the overhead memory plus twice the window size because the window can fill in both directions 117358 A Rev A 2 5 Configuring IP Utilities The value you set for the maximum window size depends on how much memory you need for services other than TCP If you have a complicated configuration specify a low Max Window Size value for TCP connections since space is limited Systems with less involved configurations can support more TCP connections and a higher maximum window size value If TCP consumes too much memory on the router connections slow down or even abort TCP uses feedback mechanisms to indicate to clients when resources are becoming scarce However if clients disregard this feedback TCP has to break connections TCP attempts to monitor and
113. information NTP messages to and receives time information from one or more remote time servers on the Internet The local NTP client reviews the time information from all available time servers and synchronizes its internal clock to the time servers whose time is most accurate The NTP client does not forward time information to other internet devices running NTP 117358 A Rev A 2 15 Configuring IP Utilities There are two types of time servers in the NTP model primary time servers and secondary time servers A primary time server is directly synchronized to a primary reference source usually a wire or radio clock that is synchronized to a radio station that provides a standard time service The primary time server is the authoritative time source in the hierarchy meaning that it is the one true time source to which the other NTP devices in the subnet will synchronize their internal clocks A secondary time server synchronizes its time from a primary time server or from one or more secondary time servers to form a synchronization subnet see Figure 2 5 A synchronization subnet is a self organizing hierarchical master slave configuration with the primary servers at the root and the secondary servers of decreasing accuracy at successive levels from the primary servers Primary Stratum 1 server Secondary servers pa Stratum 2 Stratum 3 TCPO007A Figure 2 5 Time Servers Forming a Synchronization Subnet In
114. inimum Retransmission Timeout 3 1 Setting Maximum Retransmission Timeout 3 3 Setting Maximum Window Size bytes 3 4 This chapter describes how to customize TCP services on the router It assumes you have configured IP on an interface and started TCP using the default parameters as described in Chapter 1 and that you understand the TCP concepts described in Chapter 2 After you start TCP on the router TCP default values are in effect for all TCP parameters see parameter descriptions in Appendix A You customize TCP by modifying these parameters as described in the following sections Setting Minimum Retransmission Timeout You can specify a minimum value for the retransmission timeout When one side of a TCP connection sends a frame and does not receive an acknowledgment from the other side of the connection within the timeout period the sending station retransmits the frame If you are transmitting on a high speed network and you set the minimum retransmission timeout value too high network performance may degrade because TCP must wait for the timeout period to elapse before retransmitting unacknowledged data 117358 A Rev A 3 1 Configuring IP Utilities Using the BCC By default the router sets the minimum retransmission timeout value to 250 milliseconds ms To specify a value for the minimum retransmission timeout navigate to the TCP prompt and enter min rto integer integer is a value from 100
115. ion request SYN segment and waits for a matching connection request and acknowledgment from the remote TCP SYNRECEIVED 4 TCP has sent a connection request received a matching request and waits for a confirming connection request acknowledgment from the remote TCP ESTABLISHED 5 Connection open Data can be received and sent This is the normal state for the data transfer phase of the connection FINWAIT 1 6 TCP waits for a connection termination request FIN segment from the remote TCP or for an acknowledgment of a previously sent connection termination request continued 2 4 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts Table 2 2 TCP Connection States continued State Definition FINWAIT 2 7 TCP waits for a connection termination request from the remote TCP CLOSEWAIT 8 TCP waits for a connection termination request from the client CLOSING 10 TCP waits for a connection termination request acknowledgment from the remote TCP LASTACK 9 TCP waits for acknowledgment of the connection termination request previously sent to the remote TCP TIMEWAIT 11 TCP waits for enough time to pass to ensure that the remote TCP received the acknowledgment of its connection termination request CLOSED 1 No connection TCP Memory Considerations The Transmission Control Protocol requires a significant amount of memory to e Reta
116. iptions TI More Protocols gt Global Protocols gt Telnet Server gt Global Enable Enable Disable Specifies whether the Technician Interface pauses after each screen fills with data Select Enable to configure the Technician Interface to pause after each screen fills with data Select Disable to configure the Technician Interface not to pause after each screen fills with data 1 3 6 1 4 1 18 3 5 3 7 1 4 TI Prompt Protocols gt Global Protocols gt Telnet Server gt Global None 1 to 18 alphanumeric characters Specifies the character string used as the login prompt on the Telnet Technician Interface console screen Specify a character string Site Manager disconnects the current session if you modify the TI Prompt parameter 1 3 6 1 4 1 18 3 5 3 7 1 5 Login Timeout min Protocols gt Global Protocols gt Telnet Server gt Global 1 1 to 99 minutes 99 infinity Specifies the number of minutes that can elapse before the Technician Interface disconnects the Telnet session if you do not enter a login ID at the login prompt Accept the default value 1 minute or specify a different value 1 3 6 1 4 1 18 3 5 3 7 1 6 117358 A Rev A Configuring IP Utilities Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object I
117. isabling and Reenabling Logging C 4 Specifying the IP Service C 4 Specifying the Precedence C 5 Global IP Access Policy Example C 5 117358 A Rev A C 1 Configuring IP Utilities Creating and Naming the Policy To create an IP global access policy and assign the policy a unique name navigate to the IP global prompt and enter access policy polname policy_name policy_name is a unique name for this policy For example the following command sequence creates a policy named policy_1 and displays the current default values for the policy ip access policy polname policy_1 access policy policy_1 info on ip state enabled action deny log on service telnet precedence 0 polname policy_1 Specifying the Network to Which the Policy Applies You must specify the IP address or range of range of contiguous addresses to which the policy you have created applies Navigate to the policy specify prompt and enter network jp _address ip_mask ijp_address ip_mask is an address mask pair indicating the IP address or range of IP addresses to which this policy applies For example the following command specifies 192 32 150 0 255 255 255 0 as the address and mask to which policy_1 applies access policy policy_1 network 192 32 150 0 255 255 255 0 network policy_1 192 32 150 0 255 255 255 0 C 2 117358 A Rev A Configuring IP Global Access Policies You are now in the context of the IP address for the policy To ret
118. ite Manager and router software For instructions refer to Upgrading Routers from Version 7 11 xx to Version 12 00 Conventions bold text Indicates text that you need to enter command names and buttons in menu paths Example Enter wism amp Example Use the dinfo command Example ATM DXI gt Interfaces gt PVCs identifies the PVCs button in the window that appears when you select the Interfaces option from the ATM DXI menu brackets Indicate optional elements You can choose none one or all of the options ellipsis points Horizontal and vertical ellipsis points indicate omitted information italic text Indicates variable values in command syntax descriptions new terms file and directory names and book titles quotation marks Indicate the title of a chapter or section within a book xviii 117358 A Rev A screen text separator gt vertical line I Acronyms ARP ATM BCC BGP DARPA DLSw DoD FIFO FTP GMT IEEE ILI IP NetBIOS NTP PVC PDU SMDS About This Guide Indicates data that appears on the screen Example Set Bay Networks Trap Monitor Filters Separates menu and option names in instructions and internal pin to pin wire connections Example Protocols gt AppleTalk identifies the AppleTalk option in the Protocols menu Example Pin 7 gt 19 gt 20 Indicates that you enter only one of the parts of the command The vertical line separates
119. le The table stores each command you enter at the device prompt on a first in first out FIFO basis Using the BCC By default the number of commands that the router stores in the local command history table is 20 To set the maximum number of commands that you want the router to store in the history table navigate to the server prompt and enter hist integer integer is a number from 1 to 40 commands For example the following command line sets the maximum number of commands that the router stores in the history table to 35 server hist 35 server 6 18 117358 A Rev A Customizing Telnet Services Using Site Manager Complete the tasks in the following table to specify the number of commands that the router stores in the history table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the TI History Depth parameter Click on Help or see the parameter description on page A 15 6 Click on OK Site Manager saves your changes and exits the window Configuring a Telnet Client on the Router After you start a Telnet client on the router for outbound Telnet sessions as described in Chapter 1 default
120. me it takes to send a segment and receive an acknowledgment for it 117358 A Rev A 2 3 Configuring IP Utilities Connection Types TCP is a connection oriented protocol that requires application programs at both ends of a connection to agree to it before TCP traffic can pass across an internet To do so the application program at one end performs a passive open while the application program at the other end performs an active open For passive opens a TCP client the process or application program that uses TCP waits to accept incoming connection requests Clients using passive opens can listen for specific connection requests or for a range of inbound requests In an active open the client initiates the connection Once a connection has been created application programs can begin to pass data that is the programs at each end exchange messages that guarantee reliable delivery Connections and Connection States TCP establishes a set of access points referred to as ports for each host It associates each port with a network and host address to form a socket A pair of sockets together with sequence numbers window sizes and status information form a TCP connection Table 2 2 lists the states through which a TCP connection proceeds during its lifetime Table 2 2 TCP Connection States State Definition LISTEN 2 TCP listens for a connection request from any remote TCP SYN SENT 3 TCP has sent a connect
121. mechanism developed for AppleTalk Zone Name processing This mechanism uses a hash table that NetBIOS builds and maintains on the router Increasing the number of entries in the hash table e Decreases the number of names the router must compare before finding a specific cached name e Decreases the amount of time it takes the router to find a particular cached name s Increases memory usage Note that increasing the number of entries in the hash table does not increase the number of names the router can cache This is determined by user configuration and by available memory By default NetBIOS allows 253 names in the hash table You can use Site Manager to specify the number of entries you want to allow in the cache lookup tables Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Hash Entry Count parameter Click on Help or see the parameter description on page A 24 6 Click on OK Site Manager returns you to the Configuration Manager window 8 8 117358 A Rev A Customizing NetBIOS over IP For networks that actively use up to 2500 NetBIOS server names use the default value 253 To determine a hash entry count for larger networks e Divid
122. meter is for field service personnel only 1 3 6 1 4 1 18 3 5 3 7 1 18 Diagnostic Options Protocols gt Global Protocols gt Telnet Server gt Global Disable Enable Disable Specifies whether the Technician Interface displays Telnet options information Used for diagnostic purposes only Accept the default Disable This parameter is for field service personnel only 1 3 6 1 4 1 18 3 5 3 7 1 19 Manager s Login Script Protocols gt Global Protocols gt Telnet Server gt Global automgr bat The name of the manager s login script file At login executes the manager s login script file automatically If you did not change the name of the manager s login script file accept the default Otherwise enter the new name must be 8 characters or fewer 1 3 6 1 4 1 18 3 5 3 7 1 21 A 14 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions User s Login Script Protocols gt Global Protocols gt Telnet Server gt Global autouser bat The name of the user s login script file At login executes the user s login script file automatically If you did not change the name of the user s login script file accept the default Otherwise enter the new name must be 8
123. n Instructions MIB Object ID Name Cache Age Configuration Manager gt Protocols gt IP gt NetBIOS gt Global 300 Any value in seconds that can rapidly age infrequently referenced names out of the NetBIOS name cache Specifies an age in seconds when inactive NetBIOS names expire from the NetBIOS name cache Choose an aging value that allows infrequently referenced or obsolete server names to expire from the name cache The smaller the value the less efficient broadcast reduction is but the more quickly the network recovers topology changes 1 3 6 1 4 1 18 3 5 3 11 1 9 Hash Entry Count Configuration Manager gt Protocols gt IP gt NetBIOS gt Global 253 Any integer value Specifies the number of entries you want to allow in the cache lookup tables Each NetBIOS interface has a local table to store and retrieve the names of NetBIOS servers active on the network For networks that actively use up to 2500 NetBIOS server names use the default value 253 To determine a hash entry count for larger networks divide the total number of unique NetBIOS server names active in the network by 10 adjust the quotient to the nearest higher or lower prime number and replace the default value with the new calculated number Increasing the number of hash table entries does not increase the number of names that a router can cache With larger networks increasing the size of the hash tables may however reduce internal cac
124. nable None Specifies whether the Telnet client is enabled for the IP router allowing you to establish outbound Telnet sessions from the Technician Interface to another router or to a UNIX station that supports Telnet Select Enable to enable the Telnet client for the IP router or Disable to disable it 1 3 6 1 4 1 18 3 5 3 7 2 2 Verbose Debug Logging Protocols gt Global Protocols gt Telnet Client gt Global OFF ON OFF Specifies whether the Technician Interface displays the negotiation process between the Telnet server and Telnet client This parameter is for diagnostic use only Select ON to enable verbose debug logging or OFF to disable it 1 3 6 1 4 1 18 3 5 3 7 2 3 A 16 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Remote Port Protocols gt Global Protocols gt Telnet Client gt Global 23 Any valid TCP port number Specifies the default remote Telnet server s TCP port Enter the appropriate value for the default remote Telnet server s TCP port 1 3 6 1 4 1 18 3 5 3 7 2 4 Prompt Protocols gt Global Protocols gt Telnet Client gt Global None Any text string less than 40 characters long Specifies the default Telnet client command prompt Enter any text string less than 40 characters long for example Router1 1 3 6 1 4 1 18 3 5 3 7
125. nd receives data The IP router includes a client and server implementation of TFTP enabling the router to transmit and receive files across an Internet You can use Site Manager to specify the operating characteristics of TFTP on the router Telnet Overview Telnet is a virtual terminal protocol that is part of the TCP IP protocol suite It allows you to access any system on your network running the Telnet server software Accessing Telnet establishes a virtual connection between your terminal and the specified host Once you connect to a host through Telnet your terminal appears to be connected directly to that host Telnet offers three basic services e It defines a network virtual terminal that provides a standard interface to remote systems Clients do not have to understand the details of all possible remote systems they are built to use the standard interface e It allows client and server to negotiate options and it provides a set of standard options e It treats both ends of the connection symmetrically So instead of forcing the client side to connect to a user s terminal Telnet allows an arbitrary program to become a client Furthermore either end of the connection can negotiate options Telnet is used primarily to access the Technician Interface You can execute Technician Interface commands from a remote host inbound Telnet or originate an outgoing Telnet session outbound Telnet to another Bay Networks router o
126. nfiguration Tool User Guide Bay Command Console BCC Using the Bay Command Console AN BN Routers Site Manager Configuring and Managing Routers with Site Manager Quick2Config Configuring Your Router Using the Quick2Conftig Tool NETarchitect Getting Started with Optivity Network Management System 8 0 Configuring and Maintaining Networks with the NETarchitect System These guides also describe generically how to create or modify a device configuration 117358 A Rev A Configuring IP Utilities Configuring IP for Global Protocols Before you configure TCP FTP TFTP Telnet NTP and NetBIOS over IP using the BCC or Site Manager you must first start IP on the router Using Site Manager Before you can select a protocol to run on the router you must configure a circuit that the protocol can use as an interface to an attached network For information and instructions see Configuring WAN Line Services and Configuring Ethernet FDDI and Token Ring Services When you have successfully configured the circuit the Select Protocols window opens Proceed as follows Site Manager Procedure You do this System responds 1 Inthe Select Protocols window select IP The IP Configuration window opens Then click on OK 2 Set the following parameters IP Address Subnet Mask Transmit Beast Addr UnNumbered Assoc Address Click on Help or see the parameter descriptions in Configuring IP Services
127. ng NetBIOS on a Router 1 24 This chapter also provides the following information e A comparitive summary of configuration customization tasks you can perform using the BCC or Site Manager See Summary of TCP FTP TFTP Telnet NTP and NetBIOS over IP Services on page 1 2 e Instructions on how to disable reenable and delete TCP FTP TFTP Telnet NTP and NetBIOS over IP services Summary of TCP FTP TFTP Telnet NTP and NetBIOS over IP Services After completing TCP FTP TFTP Telnet NTP and NetBIOS over IP configuration you can perform the tasks defined in Table 1 1 to customize these services A check mark indicates whether you can configure a particular function with the tool heading up the column Table 1 1 TCP FTP TFTP Telnet NTP and NetBIOS over IP Tasks TCP Configuration Tasks Task BCC Site Manager Setting Minimum Retransmission Timeout v v Setting Maximum Retransmission Timeout v v Setting Maximum Window Size bytes v y FTP Configuration Tasks Task BCC Site Manager Specifying the FTP Default Volume V V Specifying Number of Login Retries s V Specifying Maximum FTP Idle Timeout s V continued 1 2 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Table 1 1 TCP FTP TFTP Telnet NTP and NetBIOS over IP Tasks Specifying the Maximum Number of FTP Sessions JV V Specifying the Data Transmissi
128. ng and Reenabling TFTP Services After you configure IP and start TFTP on the router all TFTP default parameters are automatically enabled on the router Using the BCC To disable TFTP navigate to the TFTP prompt and enter disable For example the following command line disables TFTP on the router tftp disable tftp To reenable TFTP navigate to the TFTP prompt and enter enable For example the following command line reenables TFTP on the router tftp enable tftp 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Using Site Manager To disable and reenable TFTP services perform the following actions Site Manager Procedure You do this System responds 1 From the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose IP The IP menu opens 3 Choose TFTP The Edit TFTP Parameters window opens Set the Enable parameter Click on Help or see the parameter description on page A 7 The field is selected Click on OK You are returned to the Configuration Manager window Starting Telnet Services You can use the BCC command line interface or the Site Manager graphical user interface to configure Telnet services on the router using default values for all parameters Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on pag
129. on navigate to the server specific prompt and enter password timeout integer integer is a number ranging from 1 to 99 minutes 117358 A Rev A 6 14 Configuring IP Utilities For example the following command causes the device to wait 20 minutes before it disconnects the Telnet session server password timeout 20 server Using Site Manager Complete the tasks in the following table to specify the number of minutes that can elapse before the device disconnects the Telnet session if you fail to enter a password Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server 4 Choose Global The Telnet Server menu opens The Telnet Server Global Parameters window opens 5 Set the Password Timeout min parameter Click on Help or see the parameter description on page A 12 6 Click on OK Site Manager saves your changes and exits the window Changing the Command Timeout By changing the command timeout you determine the number of minutes that can elapse before the Technician Interface disconnects the Telnet session if you do not enter a command at the command prompt 6 12 117358 A Rev A Customizing Telnet Services Using the BCC By default the device waits 15 minutes before it disconnects the Telnet sessi
130. on Type V Specifying the FTP Control Connection V Specifying a Data Transfer Value s Specifying the TCP Window Size V s TFTP Configuration Tasks Task BCC Site Manager Specifying the Default Volume for the Router s V Specifying a Retry Timeout Value s V Specifying a Close Time Out Value V V Specifying the Number of Retransmissions V V Telnet Configuration Tasks 117358 A Rev A Task BCC Site Manager Changing the Name of the Manager s Login Script File y s Changing the Name of the User s Login Script File J V Enabling and Disabling User Logout V s Enabling and Disabling a Telnet Server on the IP Router Specifying the Maximum Number of Lines on the Technician Interface Console Pausing Telnet Console Output J V Changing the Telnet Login Prompt V V Changing the Login Timeout J V Changing the Password Timeout V s Changing the Command Timeout J V Changing Login Retries J V continued 1 3 Configuring IP Utilities Specifying the IP Address of the Time Server Specifying a Filter Type and IP Subnet Mask Table 1 1 TCP FTP TFTP Telnet NTP and NetBIOS over IP Tasks Using Telnet Server Diagnostics Z Changing the History File V s Enabling and Disabling a Telnet Client on the IP Router y V Enabling and Disabling Verbose Debug Logging Changing the Remote Port V s Changing the Command Promp
131. on if you fail to enter a command at the command prompt To specify the number of minutes that the device will wait before it disconnects the Telnet session navigate to the server specific prompt and enter command timeout integer integer is a number ranging from 1 to 99 minutes For example the following command line causes the device to wait 35 minutes before it disconnects the Telnet session if you fail to enter a command at the command prompt server command timeout 35 server Using Site Manager Complete the tasks in the following table to specify the number of minutes that can elapse before the device disconnects the Telnet session if you fail to enter a command Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Command Timeout min parameter Click on Help or see the parameter description on page A 12 6 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A 6 13 Configuring IP Utilities Changing Login Retries By changing the login retries you can determine the maximum number of login attempts allowed before the device disconnects the Telnet session Using the BCC By
132. ons Function Instructions MIB Object ID Parameter Descriptions Max Retransmission Timeout msec Protocols gt Global Protocols gt TCP gt Global 240000 15000 to 240000 ms Sets the maximum value for the retransmission timeout When one side of a TCP connection sends a frame and does not receive an acknowledgment from the other side of the connection within the timeout period the sending station retransmits the frame Specify the value you want to use for the maximum timeout period If you are transmitting on a low speed network and you set the parameter value too low the network may become congested as TCP retransmits unacknowledged frames that have not yet reached their destination 1 3 6 1 4 1 18 3 5 3 3 1 6 Max Window Size bytes Protocols gt Global Protocols gt TCP gt Global 4096 bytes 512 through 65535 bytes Sets the maximum transmit and receive window size that TCP allows for each connection Specify the window size The larger the window size the more memory each TCP connection consumes 1 3 6 1 4 1 18 3 5 3 3 1 18 117358 A Rev A A 3 Configuring IP Utilities FTP Global Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure the parame
133. ons for using both the BCC and Site Manager Parameters that you cannot yet configure with the BCC you must configure with Site Manager If you want to Go to Start TCP FTP TFTP Telnet NTP NetBIOS overf IP and IP Chapter 1 Accounting on a router using default parameter values Learn about TCP FTP TFTP Telnet NTP and NetBIOS over IP Chapter 2 concepts Customize TCP Services Chapter 3 Customize FTP Services Chapter 4 Customize TFTP Services Chapter 5 Customize Telnet Services Chapter 6 Customize NTP Services Chapter 7 Customize NetBIOS over IP Services Chapter 8 Obtain information about Site Manager parameters Appendix A Obtain a list of Site Manager default settings for TCP FTP TFTP Appendix B Telnet NTP NetBIOS over IP and IP Accounting 117358 A Rev A xvii Configuring IP Utilities If you want to Go to Configure IP Global Access Policies Appendix C Configure IP Accounting on a frame relay interface Appendix D Before You Begin Before using this guide with a new router you must complete the following procedures e Install the router refer to the installation manual that came with your router e Connect the router to the network and create a pilot configuration file refer to Quick Starting Routers Configuring BayStack Remote Access or Connecting ASN Routers to a Network Make sure that you are running the latest version of Bay Networks S
134. orndwadeinnadnaerimmceenasniniadentions D 2 Specifying the Maximum Size of the IP Accounting Table ccccccsseceeeeesteeeeeesneaes D 2 Controlling Notification of a Full IP Accounting Table ccsceeeeeeeseeeeeeeeeeeesteeeeeeees D 3 Copying the IP Accounting Table to the Checkpoint Table 0 re riin D 3 Index 117358 A Rev A xi Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 2 9 117358 A Rev A Figures TOP between IP and Glienis satssccishaisendenisveenihinssen laren ieena niente 2 6 FTP Glientand Servel xccicsutecc jacesancejcdostacpcvieeunthoxeudtstedocnonnisecusatendeauncaants 2 8 TEMEL SEN UED ss sscgiccecencabaca anaE EAA AAEE 2 13 Tao CS sene 2 14 Time Servers Forming a Synchronization Subnet cccceeeeeeeeee 2 16 NTP Time Servers Operating in Unicast Client Mode eeeeee 2 19 Pers Or Ul augina ao O iA 2 20 Broadcasting a Name Query Request cceeeeeeeee Gitmo 2 22 Returning a Unicast Name Query Response sesser 2 23 xiii Tables Table 1 1 TCP FTP TFTP Telnet NTP and NetBIOS over IP Tasks ee 1 2 Table 2 1 TEP Reliability Features i cuntiis casted ctesicnairtanieaedniioedneaneleoganieuaads 2 3 Table 2 2 TOF Comecon SAES ofria EESAN 2 4 Table 2 3 FIP Gommards Sup pOrOG srssrriinre arinina EEA 2 9 Table Bel TGP Configuration Parameters ic scccsaiccestacec
135. pment This warranty does not apply if the media has been damaged as a result of accident misuse or abuse The Licensee assumes all responsibility for selection of the Software to achieve Licensee s intended results and for the installation use and results obtained from the Software Bay Networks does not warrant a that the functions contained in the software will meet the Licensee s requirements b that the Software will operate in the hardware or software combinations that the Licensee may select c that the operation of the Software will be uninterrupted or error free or d that all defects in the operation of the Software will be corrected Bay Networks is not obligated to remedy any Software defect that cannot be reproduced with the latest Software release These warranties do not apply to the Software if it has been i altered except by Bay Networks or in accordance with its instructions ii used in conjunction with another vendor s product resulting in the defect or iii damaged by improper environment abuse misuse accident or negligence THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Licensee is responsible for the security of 117358 A Rev A jii its own data and information and for maintaining adequate procedures apart from the Software to reconstruc
136. prompt and enter prompt string string is an alphanumeric character ranging from 1 to 18 For example the following command line changes the Telnet login prompt to rtr server prompt rtr1 server 117358 A Rev A 6 9 Configuring IP Utilities Using Site Manager Complete the tasks in the following table to change the Telnet login prompt on the Telnet console screen Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the TI Prompt parameter Click on Help or see the parameter description on page A 11 6 Click on OK Disconnects the current Telnet session Changing the Login Timeout You can specify a value that will determine the number of minutes that can elapse before the device disconnects the Telnet session if you fail to enter a login ID at the login prompt Using the BCC By default the device waits 1 minute before it disconnects the Telnet session if you fail to enter a login ID at the login prompt To specify the number of minutes that can elapse before the device disconnects the Telnet session if you fail to enter a login ID at the login prompt navigate to the server specific prompt and enter
137. py files to or from the remote host and execute a few simple commands remotely When you enable FTP on the router you can e Download files from a host system to a remote router and retrieve files from the router e Examine the directory listing of files on the remote router e Delete files on the remote router As network administrator you use Site Manager to create the FTP server on the router and edit FTP server parameters For complete information and instructions refer to Chapter 4 117358 A Rev A 2 7 Configuring IP Utilities How FTP Works The FTP client initiates an FTP session with the FTP server on the router The session establishes two separate connections between host and router as follows e Control connection the communication path between the FTP client and the FTP control server for the exchange of commands and replies used for sending a command request or response e Data connection a full duplex connection over which data is transferred in a specified mode and type between FTP client and FTP server The FTP client residing on the host and the FTP server residing on the router rely on the underlying support of TCP and IP for the reliable sequenced transfer of data and control messages Figure 2 2 Host Router FTP FTP Client Server p gt Control connection cM gt Data connection TCP0002A Figure 2 2 FTP Client and Server 2 8 117358 A Rev A TCP FTP TFTP Telnet N
138. r network device that accepts Telnet You use outbound Telnet to access remote routers when Site Manager or Simple Network Management Protocol SNMP is unavailable 117358 A Rev A Configuring IP Utilities To use Telnet to access the Technician Interface you must assign at least one IP address to the router The number of Telnet connections you can make to the Technician Interface is limited only by the availability of system resources that is system memory Note We recommend that you establish no more than one Telnet session per router How Telnet Works Before you can enable Telnet on the router you must first create TCP After you create TCP you can create a Telnet server and Telnet client and modify their default parameters For information on creating TCP and modifying Telnet default parameters see Chapter 6 Telnet Server When you create a Telnet server the router accepts inbound requests from a Telnet client and establishes a Telnet session to the Technician Interface A PC with a network configuration can run a Telnet terminal emulation program to establish a remote session on a router Figure 2 3 In this case the PC is defined as a Telnet client and the router as a Telnet server 2 12 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts Telnet Server Inbound Telnet session eC T
139. r NetBIOS over IP 8 13 E Enable NetBIOS Inbound Broadcasts parameter 8 11 A 26 Enable NetBIOS Outbound Broadcasts parameter 8 11 A 26 Enable parameter IP Accounting D 2 NetBIOS static entry 8 13 A 27 TFTP A 7 Enable Disable parameter global NetBIOS A 22 NetBIOS 1 23 1 24 8 10 NetBIOS interface A 25 enabling inbound and outbound broadcasts for NetBIOS over IP 8 11 IP Accounting D 2 name caching for NetBIOS over IP 8 10 NetBIOS Insertion of Record Route option 8 2 NetBIOS name caching 8 4 NetBIOS over IP 1 24 8 9 static name caching for NetBIOS over IP 8 13 Index 1 F flow control 2 3 frame relay IP accounting on interface D 1 FTP File Transfer Protocol maximum number of sessions 4 5 TCP window size 4 8 FTP Global parameters Enable Disable A 4 Idle Time Out A 5 Login Retries A 4 H Hash Entry Count parameter 8 8 A 24 Idle Time Out parameter A 5 inbound Telnet 2 12 Internet Protocol IP 2 1 2 2 starting 1 6 IP Accounting D 1 copying table to checkpoint table D 3 enabling D 2 maximum table size for D 2 notification of full table D 3 IP Address parameter IP configuration 1 6 NetBIOS A 28 NetBIOS static entry 8 15 Max Name Cache Entries parameter 8 6 A 23 Max Retransmission Timeout parameter A 3 Memory considerations for configuring TCP 2 5 and number of Telnet connections 2 12 Min Retransmission Timeout parameter A 2 Index 2 Name Cache Ag
140. r name of a NetBIOS station Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Static Name The NetBIOS IP Static Entry Table window opens 5 Click on the static entry you want The parameter values for that entry appear in the window 6 Set the NetBIOS Station Name parameter Click on Help or see the parameter description on page A 28 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window 8 14 117358 A Rev A Customizing NetBIOS over IP Specifying the NetBIOS Station Address You can use Site Manager to specify an IP address to associate with the statically configured name of the NetBIOS station Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Static Name The NetBIOS IP Static Entry Table window opens 5 Click on the static entry you want The parameter values for that entry appear in the window 6 Set the IP Address parameter Click on Help or see the parameter description on page A 28 7 Click on Apply and then click on Done Si
141. ration Manager window Changing the Command Prompt You can change the default Telnet client command prompt by specifying any text string less than 40 characters long Using the BCC To change the default Telnet client command prompt navigate to the client specific prompt and enter prompt string string is any text string less than 40 characters 117358 A Rev A 6 23 Configuring IP Utilities For example the following command line changes the default command prompt to system client prompt system1 client Using Site Manager To change the default Telnet client command prompt complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Client 4 Choose Global The Telnet Client menu opens The Edit Telnet Client Global Parameters window opens 5 Set the Prompt parameter Click on Help or see the parameter description on page A 17 6 Click on OK You return to the Configuration Manager window 6 24 117358 A Rev A Chapter 7 Customizing NTP Services Topic Page Disabling and Reenabling NTP 7 2 Setting the NTP Operation Mode 7 3 Configuring Remote Time Servers 7 4 Setting Con
142. rying remote time servers for time information to determine the best remote time server from which to synchronize its internal clock Specify the IP address of the remote time server peer you want to configure in the NTP Peer Configuration window 1 3 6 1 4 1 18 3 5 3 17 3 1 6 Access IP Address Protocols gt Global Protocols gt NTP gt Access gt Add Access None 0 0 0 0 or any valid IP address Allows you to configure the source IP address of the remote time server whose access to the NTP local NTP client you want to restrict Enter the IP address of the remote time server whose access you want to restrict in the NTP Access Configuration window 1 3 6 1 4 1 18 3 5 3 17 2 1 3 A 18 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Filter Type Protocols gt Global Protocols gt NTP gt Access Restrict Restrict Prefer The NTP filter type parameter allows you to specify whether to drop or accept inbound NTP timestamps destined for a local NTP client The local NTP client will filter packets from a remote time server whose IP address you have restricted based on its source IP address and source subnet mask Specify Restrict or Prefer in the Filter Type Selection box When you specify Prefer NTP disables filtering on a specific remote time server
143. s IP Address parameter Click on Help or see the parameter descriptions on page A 18 7 Click on OK The source IP address of the remote time server whose access you want to restrict appears in the NTP Access Configuration List window Specifying a Filter Type and IP Subnet Mask The NTP filter type parameter allows you to specify whether to drop or accept NTP timestamps destined for a local NTP client By default the filter type is set to Restrict which tells NTP to drop specific NTP timestamps destined for a local NTP client based on its source IP address and source subnet mask For example if you have ten remote time servers broadcasting to a router and you want to receive NTP timestamps from only three remote time servers you can restrict the other seven remote time servers When you set the Filter Type to Prefer the local NTP client accepts packets received from remote time servers The Mask parameter allows you to specify an IP subnet mask address to filter NTP timestamps based on a source subnet Using Site Manager Complete the tasks in the following table to add access control to a time server Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens continued 117358 A Rev A 7 13 Configuring IP Utilit
144. s TFTP retransmits an unacknowledged message before aborting navigate to the TFTP prompt and enter retry count integer integer indicates any number of retransmissions For example the following command line causes TFTP to abandon the transfer attempt after 10 retries tftp retry count 10 tftp Using Site Manager Complete the tasks in the following table to specify the number of retransmissions that TFTP will attempt Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose TFTP The Edit TFTP Parameters window opens 4 Set the Retransmit parameter Click on Help or see the parameter description on page A 8 5 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A 5 5 Chapter 6 Customizing Telnet Services Topic Page Changing the Name of the Manager s Login Script File 6 2 Changing the Name of the User s Login Script File 6 3 Enabling and Disabling User Logout 6 4 Enabling and Disabling a Telnet Server on the IP Router 6 6 Specifying the Maximum Number of Lines on the Technician Interface Console 6 7 Pausing Telnet Console Output 6 8 Changing the Telnet Login Prompt 6 9 Changing the Login Timeout 6 10 Changing the Password T
145. s a Telnet server on the router telnet enable server To disable a Telnet client on the router navigate to the client specific prompt and enter disable For example the following command line disables a Telnet client from the router client disable To reenable a Telnet client on the router navigate to the client specific prompt and enter enable For example the following command line reenables a Telnet client on the router client enable client 1 18 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Using Site Manager To enable or disable the Telnet server and the Telnet client for the IP router complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Edit Telnet Server Global Parameters window opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 10 6 Click on OK You return to the Configuration Manager window To enable and disable the Telnet client complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens c
146. s to receive one or more segments and cannot complete the sequential ordering it stores the remaining segments in cache memory for as long as the TCP connection exists When TCP receives the missing segments it takes the stored segments from cache memory puts them into sequential order with the newly received segments and then forwards them to the receiving TCP client Out of order caching ensures that data arrives in the correct order while saving bandwidth and retransmission time Checksums To ensure the integrity of the data the sending host adds a checksum to each segment it transmits The receiving host recalculates the checksum and if there is damage discards the segment Flow control Flow control allows the receiving host to regulate how much data is sent to it To activate flow control the receiving host advertises a window that indicates how much data it can accept When the transmit window is full the sending host must stop sending data until the receiving host can open the window again To control the rate of data transfer on your TCP connections you can specify the maximum window size allowed for each connection Acknowledgment TCP requires the receiving host to acknowledge that it has with received the data If the sending host does not receive an retransmission acknowledgment within a set timeout interval the sending station retransmits the data TCP determines the timeout interval by estimating the average ti
147. se NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the following parameters NetBIOS Name Caching e 15 Character NetBIOS Name Caching Click on Help or see the parameter description on page A 26 6 Click on OK Site Manager returns you to the Configuration Manager window 117358 A Rev A Customizing NetBIOS over IP Creating a MIB Instance for a Cached Name By default NetBIOS creates a MIB instance for each name entry stored in the name cache You can use Site Manager to disable the feature if you want to release the system memory and processing resources otherwise dedicated to maintaining cached names in the MIB Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 choose IP The IP menu opens 3 choose NetBIOS The NetBIOS menu opens 4 choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Create MIB Inst for Cached Name parameter Click on Help or see the parameter description on page A 23 6 Click on OK Site Manager returns you to the Configuration Manager window 117358 A Rev A 8 5 Configuring IP Utilities Specifying the Size of the Name Cache By default NetBIOS allocates space for 100 entries in the name cache You can accept the default or use Site Manager to specify
148. se Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Global The Edit NTP Global Parameters window opens 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 2 6 Click on OK 7 2 117358 A Rev A Customizing NTP Services Setting the NTP Operation Mode The BCC does not support this function You must specify the mode of operation in which you want to configure NTP to run on a router NTP provides three operation modes Unicast Client Broadcast Client and Multicast Client modes The current implementation of NTP supports only Client mode You select Unicast Client mode when you want to configure remote time servers peers You select Broadcast Client mode and Multicast Client mode when you want to configure access control filters to restrict certain remote time servers from sending NTP packets to a local NTP client By default NTP runs in Unicast Client mode To specify the mode in which you want NTP to run on the router complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Global The Edit NTP Global Parameters window opens 5 Click on the Mo
149. se Telnet Client The Telnet Client menu opens 4 Choose Global The Edit Telnet Client Global Parameters window opens 5 Set the Verbose Debug Logging parameter Click on Help or see the parameter description on page A 16 6 Click on OK You return to the Configuration Manager window Changing the Remote Port You can change the default remote Telnet server s TCP remote port by specifying a valid TCP port number Using the BCC By default the Telnet server s TCP remote port is 23 To change the remote port navigate to the client specific prompt and enter remote port integer integer is any valid TCP port number 6 22 117358 A Rev A Customizing Telnet Services For example the following command line changes the Telnet server s remote port number to 20 client remote port 20 client Using Site Manager To change the remote Telnet server s TCP port complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Client The Telnet Client menu opens 4 Choose Global The Edit Telnet Client Global Parameters window opens 5 Set the Remote Port parameter Click on Help or see the parameter description on page A 17 6 Click on OK You return to the Configu
150. solely for backup purposes in support of authorized use of the Software and c to use and copy the associated user manual solely in support of authorized use of the Software by Licensee This license applies to the Software only and does not extend to Bay Networks Agent software or other Bay Networks software products Bay Networks Agent software or other Bay Networks software products are licensed for use under the terms of the applicable Bay Networks Inc Software License Agreement that accompanies such software and upon payment by the end user of the applicable license fees for such software 2 Restrictions on use reservation of rights The Software and user manuals are protected under copyright laws Bay Networks and or its licensors retain all title and ownership in both the Software and user manuals including any revisions made by Bay Networks or its licensors The copyright notice must be reproduced and included with any copy of any portion of the Software or user manuals Licensee may not modify translate decompile disassemble use for any competitive analysis reverse engineer distribute or create derivative works from the Software or user manuals or any copy in whole or in part Except as expressly provided in this Agreement Licensee may not copy or transfer the Software or user manuals in whole or in part The Software and user manuals embody Bay Networks and its licensors confidential and proprietary intellectual property Licens
151. ssors whichever is applicable 6 Use of Software in the European Community This provision applies to all Software acquired for use within the European Community If Licensee uses the Software within a country in the European Community the Software Directive enacted by the Council of European Communities Directive dated 14 May 1991 will apply to the examination of the Software to facilitate interoperability Licensee agrees to notify Bay Networks of any such intended examination of the Software and may procure support and assistance from Bay Networks 7 Term and termination This license is effective until terminated however all of the restrictions with respect to Bay Networks copyright in the Software and user manuals will cease being effective at the date of expiration of the Bay Networks copyright those restrictions relating to use and disclosure of Bay Networks confidential information shall continue in effect Licensee may terminate this license at any time The license will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license Upon termination for any reason Licensee will immediately destroy or return to Bay Networks the Software user manuals and all copies Bay Networks is not liable to Licensee for damages in any form solely by reason of the termination of this license 8 Export and Re export Licensee agrees not to export directly or indirectly the Software or related technical
152. string that meets the requirements of the Domain Name System as described in RFC 833 1 3 6 1 4 1 18 3 5 3 11 4 1 5 IP Address Configuration Manager gt Protocols gt IP gt NetBIOS gt Static Name None The IP address of the NetBIOS station Specifies an IP address to associate with the statically configured name Enter a valid IP address of a NetBIOS station 1 3 6 1 4 1 18 3 5 3 11 4 1 6 A 28 117358 A Rev A Parameter Descriptions IP Accounting Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Use the following guidelines to configure the IP accounting parameters in the Configuration Manager window Enable Configuration Manager gt Protocols gt IP gt Global Enable Enable Disable Enables and disables IP Accounting on the router Use this parameter to disable and reenable IP Accounting 1 3 6 1 4 1 18 3 5 20 1 1 2 Threshold Configuration Manager gt Protocols gt IP gt Global 512 1 to 10 240 entries Specifies the maximum number of entries in the IP Accounting table Specify a maximum number that meets the requirements of IP Accounting on this router 1 3 6 1 4 1 18 3 5 20 1 1 3 Trap Percent Configuration Manager gt Protocols gt IP gt Global 80 1 to 100 percent Specif
153. t V V NTP Configuration Tasks Task BCC Site Manager Disabling and Reenabling NTP s Setting the NTP Operation Mode V V Adding Remote Time Servers V V Setting Config Peer Mode V Setting Local Host Mode V Specifying the Source IP Address V V Specifying Peer Preference V Deleting Remote Time Servers from a Router V v v v Deleting Access for a Time Server NetBIOS over IP Tasks Task BCC Site Manager Specifying a TTL Value for a Rebroadcast Packet Vv Enabling the Insertion of Record Route Option s Configuring a NetBIOS Cache V Configuring NetBIOS on an IP Interface Vv continued 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Table 1 1 TCP FTP TFTP Telnet NTP and NetBIOS over IP Tasks Configuring a Static NetBIOS Name and Address Supplying a Scope Identifier Adding a Traffic Filter to a NetBIOS Interface The following chapters describe how to perform all these tasks Chapter 2 TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts looks at how the protocols work Chapters 3 through 8 describe how to customize the default settings after you have started the services Starting Configuration Tools Before configuring TCP FTP TFTP Telnet NTP and NetBIOS over IP services refer to the following user guides for instructions on how to start and use the Bay Networks configuration tool of your choice Co
154. t lost or altered files data or programs 4 Limitation of liability IN NO EVENT WILL BAY NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE EVEN IF BAY NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF BAY NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO BAY NETWORKS FOR THE SOFTWARE LICENSE 5 Government Licensees This provision applies to all Software and documentation acquired directly or indirectly by or on behalf of the United States Government The Software and documentation are commercial products licensed on the open market at market prices and were developed entirely at private expense and without the use of any U S Government funds The license to the U S Government is granted only with restricted rights and use duplication or disclosure by the U S Government is subject to the restrictions set forth in subparagraph c 1 of the Commercial Computer Software Restricted Rights clause of FAR 52 227 19 and the limitations set out in this license for civilian agencies and subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause of DFARS 252 227 7013 for agencies of the Department of Defense or their succe
155. te Manager Procedure You do this System responds 17 Choose Forward to Next Hop The Next Hop window opens 18 Type the IP address of this interface the interface on which you are configuring the traffic filter Then click on OK 8 18 117358 A Rev A Appendix A Parameter Descriptions This appendix shows how to customize the parameters for the TCP FTP TFTP Telnet NTP interfaces NetBIOS and IP accounting interfaces you configure on the router For each parameter you configure this appendix provides the default setting all valid parameter options the parameter function instructions for setting the parameter and the management information base MIB object ID The Technician Interface allows you to modify parameters by issuing set and commit commands with the MIB object ID This process is equivalent to modifying parameters using Site Manager For more information about using the Technician Interface to access the MIB refer to Using Technician Interface Software Caution The Technician Interface does not verify the validity of your parameter values Entering an invalid value can corrupt your configuration After you create TCP FTP TFTP Telnet NTP and NetBIOS over IP you can edit the parameters for each of these protocols from the Configuration Manager window For instructions on accessing this window refer to Configuring and Managing Routers with Site Manager 117358 A Rev A A 1
156. te Manager returns you to the Configuration Manager window 117358 A Rev A 8 15 Configuring IP Utilities Supplying a Scope Identifier When you configure a static name you must specify its NetBIOS scope that is the area of the network across which the name is known Each NetBIOS scope has a Scope Identifier a string of characters that meet the requirements of the Domain Name System All NetBIOS names are represented in a manner consistent with the definition for compressed name messages outlined in the Domain Name Service Specification RFC 833 You can use Site Manager to specify a scope identifier Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Static Name The NetBIOS IP Static Entry Table window opens 5 Click on the static entry you want The parameter values for that entry appear in the window 6 Set the NetBIOS Scope ID parameter as desired Click on Help or see the parameter description on page A 28 7 Click on Apply and then click on Done Site Manager returns you to the Configuration Manager window 8 16 117358 A Rev A Customizing NetBIOS over IP Adding a Traffic Filter to a NetBIOS Interface If name caching is enabled a router that receives a name query response
157. ters window opens continued 6 20 117358 A Rev A Customizing Telnet Services Site Manager Procedure continued You do this System responds 5 Set the Enable Disable parameter Click on Help or see the parameter description on page A 10 6 Click on OK Site Manager saves your changes and exits the window Enabling and Disabling Verbose Debug Logging You can specify whether you want to enable or disable verbose debug logging When you enable verbose debug logging you tell the device to display the negotiation process between the Telnet server and Telnet client This parameter is for diagnostic use only Using the BCC By default verbose debug logging is turned off disabled To enable verbose debug logging navigate to the client specific prompt and enter debug log flag on For example the following command line enables verbose debug logging client debug log flag on client To disable verbose debug logging navigate to the client specific prompt and enter client debug log flag off client 117358 A Rev A 6 21 Configuring IP Utilities Site Manager To enable and disable verbose debug logging complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choo
158. ters in the Edit FTP Global Parameters window Enable Disable Protocols gt Global Protocols gt FTP gt Global Enable Enable Disable Specifies whether the FTP subsystem is enabled or disabled Specify Disabled if you want to disable FTP on the router 1 3 6 1 4 1 18 3 5 3 10 1 2 Default Volume Protocols gt Global Protocols gt FTP gt Global Volume 2 Volume 1 to 13 Volume A Specifies the number of the file system volume to which FTP writes transferred files and from which FTP retrieves files for transfer On systems with a diskette specify Volume A 1 3 6 1 4 1 18 3 5 3 10 1 3 Login Retries Protocols gt Global Protocols gt FTP gt Global 3 retries 0 to 5 retries Specifies the number of FTP login retries allowed after a login failure Enter a value representing the number of login attempts that FTP will accept after a login failure before rejecting logins 1 3 6 1 4 1 18 3 5 3 10 1 4 A 4 117358 A Rev A Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Descriptions Idle Time Out secs Protocols gt Global Protocols gt FTP gt Global 900 1 to 10000 sessions Specifies the length of time in seconds that FTP waits before closing an idle FTP control connection Determine
159. the NTP model the synchronization subnet automatically reconfigures in a hierarchical master slave configuration to produce the most accurate and reliable time even when one or more primary time servers or the network path between them fails This includes a case in which all the primary servers on a partitioned subnet fail but one or more backup primary servers continue to operate Should all primary time servers in the subnet fail the remaining secondary servers will synchronize among themselves 2 16 117358 A Rev A TCP FTP TFTP Telnet NTP and NetBIOS over IP Concepts Understanding How NTP Distributes Time Within the Subnet NTP distributes time through a hierarchy of primary and secondary time servers with each server adopting a stratum see Figure 2 5 on page 2 16 A stratum defines how many NTP hops away a particular secondary time server is from an authoritative time source primary time server in the synchronization subnet A stratum 1 time server located at the top of the hierarchy or bottom depending on your point of view is directly attached to an external time source typically a wire or radio clock a stratum 2 time server receives its time via NTP from a stratum 1 time server a stratum 3 time server receives its time via NTP from a stratum 2 time server and so forth Each NTP client in the synchronization subnet chooses as its time source the server with the lo
160. the tasks in the following table Site Manager Procedure You do this System responds ii In the Configuration Manager window choose Protocols The Protocols menu opens Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Global The Edit NTP Global Parameters window opens Set the Enable Disable parameter Click on Help or see the parameter description on page A 17 Click on OK Starting NetBIOS over IP You can easily start NetBIOS over IP and configure it on a circuit using Site Manager default parameter values If you decide to change some or all of the defaults see to the instructions in Chapter 8 Customizing NetBIOS over IP For a list of NetBIOS over IP parameters see Appendix B Before you begin verify that you have configured IP on an interface as described in Configuring IP for Global Protocols on page 1 6 To start NetBIOS over IP perform the following actions Site Manager Procedure You do this System responds 1 In the Configuration Manager window Choose Protocols The Protocols menu opens 2 Choose IP The IP menu opens continued 1 22 117358 A Rev A Starting TCP FTP TFTP Telnet NTP and NetBIOS over IP Site Manager Procedure You do this System responds 3 Choose NetBIOS The NetBIOS menu opens 4 C
161. ting This parameter allows field personnel to specify whether the Technician Interface displays a report that shows a record of all processing operations By default recording of processing operations is disabled To enable the Technician Interface to display a report showing a record of all processing operations complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Diagnostic Report parameter Click on Help or see the parameter description on page A 13 6 Click on OK Site Manager saves your changes and exits the window Enabling Diagnostic Exercise This parameter allows field personnel to enable exercise diagnostics on the Telnet server 117358 A Rev A 6 15 Configuring IP Utilities To enable exercise diagnostics on the Telnet server complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens
162. to 15000 ms msec For example the following command sets the value for the minimum retransmission timeout to 300 ms tcp min rto 300 tcp Using Site Manager Complete the tasks in the following table to specify a value for the minimum retransmission timeout Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols Choose Global Protocols The Global Protocols menu opens 3 Choose TCP The TCP menu opens 4 Choose Global The Edit TCP Global Parameters window opens 5 Set the Min Retransmission Timeout msec parameter Click on Help or see the parameter description on page A 2 6 Click on OK Site Manager saves your changes and exits the window 3 2 117358 A Rev A Customizing TCP Services Setting Maximum Retransmission Timeout You can specify a maximum value for the retransmission timeout When one side of a TCP connection sends a frame and does not receive an acknowledgment from the other side of the connection within the timeout period the sending station retransmits the frame If you are transmitting on a low speed network and you set the maximum retransmission timeout value too low the network may become congested as TCP retransmits unacknowledged frames that have not yet reached their destination Using the BCC By default TCP sets the maximum retransmission value to 240000 ms To specify
163. to add to the router navigate to the NTP prompt and enter peer address address is 0 0 0 0 or any valid IP address For example the following command line adds the peer 2 2 2 2 to the router ntp peer 2 2 2 2 peer 2 2 2 2 7 4 117358 A Rev A Customizing NTP Services Using Site Manager Complete the tasks in the following table to specify an IP address of each NTP time server you want to add Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose NTP The NTP menu opens 4 Choose Peers The NTP Peers Configuration List window opens 5 Click on Add The NTP Peer Configuration window opens 6 Set the Peer IP address parameter Click on Help or see the parameter descriptions on page A 18 7 Click on OK The NTP Peer Configuration List window opens displaying the IP address of the time server that you configured and the default NTP peer configuration parameter values NTP queries all the remote time servers in the peer list for time information and then determines which time server to synchronize its internal clock to based on the following criteria e Lowest stratum e Closest in proximity to the primary time server e Claimed highest precision When the local NTP client queries the remote time servers from the p
164. u understand the NetBIOS over IP concepts described in Chapter 2 After you start NetBIOS over IP on the router NetBIOS over IP default values are in effect for all NetBIOS parameters see parameter descriptions in Appendix A You customize NetBIOS over IP by modifying these parameters as described in the following sections 117358 A Rev A 8 1 Configuring IP Utilities Specifying a TTL Value for a Rebroadcast Packet The TTL value restricts the number of routers a rebroadcast packet can traverse To prevent NetBIOS broadcast packets from traversing the network indefinitely set the parameter to a minimal value By default NetBIOS sets the TTL value in each packet to 5 You can use Site Manager to set a TTL value from 1 to 255 Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens Choose Protocols 2 Choose IP The IP menu opens 3 Choose NetBIOS The NetBIOS menu opens 4 Choose Global The Edit NetBIOS IP Global Parameters window opens 5 Set the Rebroadcast Packet TTL parameter as desired Click on Help or see the parameter description on page A 25 6 Click on OK Site Manager returns you to the Configuration Manager window Enabling the Insertion of Record Route Option The Insertion of Record Route option prevents rebroadcast packets from looping forever by allowing the NetBIOS entity in the router to determine wh
165. upport baynetworks com Library GenMisc Bay Networks publications are available on the World Wide Web at support baynetworks com Library tpubs Bay Networks Customer Service You can purchase a support contract from your Bay Networks distributor or authorized reseller or directly from Bay Networks Services For information about or to purchase a Bay Networks service contract either call your local Bay Networks field sales office or one of the following numbers XX 117358 A Rev A About This Guide Fax number 978 916 3514 Region Telephone number United States and 800 2LANWAN then enter Express Canada Routing Code ERC 290 when prompted to purchase or renew a service contract 978 916 8880 direct Europe 33 4 92 96 69 66 Asia Pacific 61 2 9927 8888 Latin America 561 988 7661 33 4 92 96 69 96 61 2 9927 8899 561 988 7550 Information about customer service is also available on the World Wide Web at support baynetworks com How to Get Help If you purchased a service contract for your Bay Networks product from a distributor or authorized reseller contact the technical support staff for that distributor or reseller for assistance If you purchased a Bay Networks service program call one of the following Bay Networks Technical Solutions Centers Technical Solutions Center Telephone number Fax number Billerica MA 800 2LANWAN 978 916 3514 Santa Clara CA 800 2L
166. uring IP Utilities NetBIOS Global Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Enable Disable Configuration Manager gt Protocols gt IP gt NetBIOS gt Global Enable Enable Disable Enables or disables NetBIOS on this router If NetBIOS has been configured on this router use this parameter to disable and reenable it as required 1 3 6 1 4 1 18 3 5 3 11 1 2 NetBIOS Name Caching Configuration Manager gt Protocols gt IP gt NetBIOS gt Global Disable Enable Disable Globally enables or disables the ability of the router to cache the name associated with each NetBIOS server that is active on the network Select Enable to activate NetBIOS server name caching at every NetBIOS interface configured on the node 1 3 6 1 4 1 18 3 5 3 11 1 4 15 Character NetBIOS Name Caching Configuration Manager gt Protocols gt IP gt NetBIOS gt Global Disable Enable Disable Enables or disables the ability of the router to treat a NetBIOS name as either a 15 or a 16 character entity Select Enable to activate 15 character NetBIOS name caching at every NetBIOS interface configured on this router Select Disable if you want NetBIOS to treat names as 16 character entities 1 3 6 1 4 1 18 3 5 3 11 1 5
167. urn to the policy specify prompt enter back For example network policy_1 192 32 150 0 255 255 255 0 back access policy policy_1l Disabling and Reenabling a Policy By default the access policy is enabled on the router To change the state of the global IP access policy you have created navigate to the policy specific prompt and enter state state state is enabled default disabled For example the following command disables policy policy_1 access policy policy_1 state disabled access policy policy_1l Specifying the Policy Action By default the policy denies access to the IP utility you specify see Specifying the IP Service on page C 4 To specify whether the IP global access policy you have created allows or denies access to an IP utility navigate to the policy specific prompt and enter action action action is deny default allow 117358 A Rev A C 3 Configuring IP Utilities For example the following command allows access to the service specified for policy_1 access policy policy_1 action allow access policy policy_1l Disabling and Reenabling Logging By default the IP global access policy turns message logging on To turn message logging off and on for the policy you have created navigate to the policy specific prompt and enter log state state is on default off For example the following command turns off logging for policy_1 access polic
168. west stratum number that it is configured to communicate with via NTP This strategy effectively builds a self organizing tree of NTP speakers The number of strata is limited to 15 to avoid long lived synchronization loops NTP tries not to synchronize to a remote time server whose time might not be accurate It avoids doing this in two ways First NTP never synchronizes to a remote time server that is not in turn synchronized itself Second NTP compares the time reported by several remote time servers and will not synchronize to a remote time server whose time is markedly different from the others even if its stratum is lower Synchronizing with the Best Available Time Server Unlike other implementations of time synchronization protocols NTP does not attempt to synchronize the remote time server s internal clocks to each other Rather NTP achieves time synchronization by synchronizing their clocks to universal standard time using the best available time source and transmission paths to that time source 117358 A Rev A 2 17 Configuring IP Utilities NTP uses the following criteria to determine the time server whose time is best e Time server with the lowest stratum e Time server closest in proximity to the primary time server reduces network delays e Time server offering the highest claimed precision NTP prefers to have access to several at least three servers at the lower stratum level since it can apply an agr
169. wing table Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Diagnostic PTY Data parameter Click on Help or see the parameter description on page A 14 6 Click on OK Site Manager saves your changes and exits the window 117358 A Rev A 6 17 Configuring IP Utilities Enabling Diagnostic Options To specify whether you want the Technician Interface to display information on Telnet diagnostic options complete the tasks in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Global The Telnet Server Global Parameters window opens 5 Set the Diagnostic Options parameter Click on Help or see the parameter description on page A 14 6 Click on OK Site Manager saves your changes and exits the window Changing the History File You can determine the maximum number of commands you want stored in the local command history tab
170. y policy_1 log off access policy policy_1l Specifying the IP Service By default the global IP access policy controls access for Telnet To specify the IP utility for which you want to this policy to control access navigate to the policy specific prompt and enter service service service is telnet default ftp tftp snmp ntp snmp C 4 117358 A Rev A Configuring IP Global Access Policies For example the following command specifies FTP as the IP utility controlled by policy_1 access policy policy_1 service ftp access policy policy_1l Specifying the Precedence The precedence parameter specifies the precedence of this policy relative to other global IP access policies There is no default for this parameter To set the precedence parameter for a global IP access policy navigate to the policy specific prompt and enter precedence precedence precedence is an integer For example the following command sets the precedence parameter to 5 access policy policy_1 precedence 5 access policy policy_1l Global IP Access Policy Example The following command sequence creates a global access policy called no telnet ip access policy polname no telnet access policy no telnet network 192 32 150 0 255 255 255 0 network no telnet 192 32 150 0 255 255 255 0 info on access policy no telnet state enabled address 192 32 150 0 mask 255 255 255 0 network no telnet 192 32 150 0 255 255 255 0 b
171. you have configured IP on an interface and started FTP using the default parameters as described in Chapter 1 and that you understand the FTP concepts described in Chapter 2 After you start FTP on the router FTP default values are in effect for all FTP parameters see parameter descriptions in Appendix A You customize FTP by modifying these parameters as described in the following sections 117358 A Rev A 4 1 Configuring IP Utilities Specifying the FTP Default Volume The FTP default volume is the file system volume to which FTP writes transferred files and from which FTP retrieves files for transfer To specify the FTP default volume you must enter a value from 1 to 13 for the file system volume On diskette based systems you must enter Volume A as the default volume Using the BCC By default FTP uses volume 1 as the default volume To specify a volume navigate to the FTP prompt and enter default volume vo ume_number volume _number is an integer ranging from 1 to 14 la to 4a or 1b to 4b For example the following command sequence specifies volume 5 as the default volume and displays attributes and values ftp default volume 5 ftp info on box state disabled default volume 2 login retries 3 idle timeout 900 max sessions 3 tcp window size 60000 Using Site Manager Complete the tasks in the following table to specify the FTP default volume Site Manager Procedure You do this
172. ystem responds 1 From the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Server The Telnet Server menu opens 4 Choose Create Server The Telnet Configuration window opens allowing you to customize Telnet Server global parameters To start a Telnet client perform the following actions Site Manager Procedure You do this System responds 1 From the Configuration Manager window The Protocols menu opens choose Protocols 2 Choose Global Protocols The Global Protocols menu opens 3 Choose Telnet Client The Telnet Client menu opens 4 Choose Create Client The Edit Telnet Global Client Parameters window opens allowing you to customize Telnet Client global parameters Disabling and Reenabling Telnet Services After you configure IP and start Telnet on the router all Telnet default parameters are automatically enabled on the router Using the BCC To disable a Telnet server on the router navigate to the server specific prompt and enter disable 117358 A Rev A 1 17 Configuring IP Utilities For example the following command line disables a Telnet server from the router server disable telnet To reenable a Telnet server on the router navigate to the server specific prompt and enter enable For example the following command line reenable
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