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Avaya Configuring PPP Services User's Manual

1. Table 3 2 PPP Line Parameters Configurable with the BCC Site Manager Parameter Name BCC Parameter Restart Timer in Seconds restart timer Seconds between Xmit of Echo Request echo requests Echo Reply Acceptable Loss echo replies lost Max Configure Requests max configure requests Max Terminate Requests max terminate requests Max Configuration Failure Count max configure fails Link Quality Protocol link quality protocol continued 3 14 303537 A Rev 00 Customizing PPP Table 3 2 PPP Line Parameters Configurable with the BCC continued Site Manager Parameter Name BCC Parameter Peer Link Quality Report Timer peer lqr timer LQR Reporting Period Iqr reporting period Inbound Link Quality Iqr percentage received Outbound Link Quality Iqr percentage sent Magic Num Disable magic number Editing PPP Line Parameters If you change any of the parameters in the following list and you are dynamically configuring a router that has already negotiated its link control protocol LCP you must force link that is LCP renegotiation on the interface to implement your changes e Echo Reply Acceptable Loss e Max Configure Requests e Max Terminate Requests e Max Configuration Failure Count e Local Authentication Protocol e Local PAP ID e Local PAP Password e Remote PAP ID e Remote PAP Password e Link Quality Protocol e Peer Link Quality Report Timer e LQR Reporting Period e CHAP S
2. p 4 NCP open begin transmitting data Send Data __ PPP0002A Figure 2 2 Initializing the PPP Interface 303537 A Rev 00 2 7 Configuring PPP Services Authenticating the PPP Link PAP and CHAP In the authentication phase of PPP initialization one or both peer routers enable either Password Authentication Protocol PAP or Challenge Handshake Authentication Protocol CHAP Authentication is optional for leased lines but required for switched dial up lines You can optionally specify a time limit for authentication on switched lines Password Authentication Protocol PAP imposes network security by requiring the peer router to send a PAP packet that contains a plain text user identifier and password to the originating router before the interface can advance to the network layer protocol phase If PAP fails the network administrator must change the identifier and password on both peer routers and disable and reenable LCP to reinitialize the line Challenge Handshake Authentication Protocol CHAP imposes network security by requiring that the peers share a plain text secret The originating peer sends a challenge message to its receiving peer The receiving peer responds with a value it calculates on the basis of knowing the secret The first peer then matches the response against its own calculation of what the response should be If the values match it sends a success message and the LCP esta
3. Configuring Multilink Fragmentation For multilink circuits that include different speed links and that may carry both large and small packets you can optionally enable multilink fragmentation PPP fragments packets only if doing so will improve the flow of data over the circuit When necessary PPP splits packets into encapsulated fragments and then sends the fragments over the lines in the multilink bundle reassembling them on the receiving peer into the proper sequence PPP discards all fragments of an incomplete reassembly The number of fragments is always equal to or less than the number of lines in the bundle Multilink fragmentation is enabled by default When you enable fragmentation you can specify the minimum size packet that you want PPP to consider fragmenting The default minimum size is 256 bytes To configure the multilink fragmentation and minimum fragment size on this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set Multilink Fragmentation See page A 12 4 Set Fragmentation Trigger Size See page A 13 5 If you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears continue with the Interface configuration 3 12 303537 A Rev 00
4. Restart Timer Echo Req Freq Echo Rep Loss Max Conf Req Max Term Req Max Conf Fail show ppp line params The circuit for which this command displays information Names the physical interface The operational state of the Link Control Protocol The number of seconds that the restart timer waits before retransmitting data The number of seconds that the router waits between the transmission of echo request packets The maximum number of unacknowledged echo reply packets that the router transmits before declaring the point to point link down The maximum number of unacknowledged configure request packets that the router transmits before assuming that the peer router on the other end of the link is unable to respond The maximum number of unacknowledged terminate request packets that the router transmits before assuming that the peer router on the other end of the link is unable to respond The maximum number of configure NAK packets that the router transmits before sending a configure reject packet for those options that it does not agree with The show ppp line params command displays information about the PPP line parameters configured for the specified interface The output contains the following information Circuit Slot lt Mod gt Conn LCP Magic Number The circuit for which this command displays information Names the physical interface The operational state of the Link Control Protocol The operat
5. Setting the Restart Timer The value of the Restart Timer in Seconds parameter specifies the number of seconds that the restart timer waits before retransmitting data The default value is 3 seconds and the range is 1 through 1000 seconds Using the BCC Navigate to the line prompt for the circuit and enter restart timer seconds For example the following command sets the restart timer to wait 5 seconds before retransmitting data on circuit 3 1 line 3 1 restart timer 5 Using Site Manager To set the restart timer on this interface do the tasks in the following table Site Manager Procedure You do this System responds k From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Choose Lines The Lines window opens a Set Restart Timer in Seconds See page A 15 If you have no other PPP line parameters to configure click on OK Otherwise continue with the Lines configuration The Interfaces window opens 3 18 303537 A Rev 00 Customizing PPP Specifying the Interval Between Echo Request Packets The value of the Seconds between Xmit of Echo Request parameter specifies the number of seconds that the router waits between the transmission of echo request packets A value of 0 the default means that this parameter is turned off Using the BCC Navigate to the line prompt for the circuit and
6. Configuring PPP Services BayRS Version 13 00 Site Manager Software Version 7 00 BCC Version 4 05 Part No 303537 A Rev 00 October 1998 Bay Networks Where Information Flows GIS Bay Networks Where Information Flows 4401 Great America Parkway 8 Federal Street Santa Clara CA 95054 Billerica MA 01821 Copyright 1998 Bay Networks Inc All rights reserved Printed in the USA October 1998 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 ACE AFN AN BCN BLN BN BNX CN FRE LN Quick2Config and Bay Networks are registered trademarks and Advanced Remote Node ANH ARN ASN BayRS BayStack BayStream BCC BCNX BLNX CLAM SPEX System 5000 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
7. A 28 CN 2 13 code reject packet 2 5 comparing multiline and PPP multilink 2 18 compatibility previous versions 2 15 compression data 2 22 3 9 A 7 compression control protocol CCP 3 9 A 7 concepts PPP 2 1 configuration failure count 3 22 configuration tools starting 1 3 configure ACK packet 2 5 2 6 configure NAK packet 2 5 2 6 3 22 setting maximum number A 17 configure reject packet 2 5 2 6 3 22 configure request packet 2 5 maximum number 3 20 setting maximum number A 16 configuring multilink 2 15 congestion monitor 2 13 2 15 conventions text Xvi convergence timer 3 23 Convergence Timer parameter A 27 B 3 Index 2 Corporate LAN Access Module CLAM router 3 31 Corporate LAN Access Module CLAM router MRU size A 28 D data A 7 data compression 2 22 3 9 A 7 data encryption 3 13 data link control protocol 2 2 2 3 authentication 2 8 data link layer 2 2 data path WAN 2 12 datagram encapsulation 2 2 2 10 DECnet IV Enable parameter A 4 B 1 DECnet IV support enabling 3 9 DECnet Phase IV Control Protocol 2 4 defaults interface parameters B 1 deleting PPP 1 6 device configuration adding or modifying 1 3 dial backup 2 11 A 24 dial services 2 11 bandwidth on demand 2 11 dial backup 2 11 dial on demand 2 11 identification mechanism 2 8 PPP support 2 10 dial on demand 2 11 A 24 implementation notes 2 17 dial up line PPP support
8. When you enable link quality monitoring through the Link Quality Protocol parameter you are turning on monitoring only for the local router For link quality monitoring to be operational it only has to be enabled on one side of the link If two routers are configured for different link quality reporting periods they negotiate to the lower value so that the LQR period will be the same on both sides of the link LQR packets contain counters of incoming and outgoing data packets for the routers on each side of the link Each time a router receives an LQR packet PPP uses that packet to calculate the outbound link quality the percentage of packets the router transmitted that its peer successfully receives and the inbound link quality the percentage of packets that the peer transmitted that this router successfully receives After five LQR reporting periods PPP averages the inbound and outbound link quality and compares these values against a user specified threshold This is a rolling average After the first five LQR reporting periods PPP acquires the data from the next period and drops the oldest data Then it computes the link quality average for that set of five LQR periods and so on If either the inbound or outbound link quality average drops below the threshold PPP brings down the link The driver software automatically brings the link back up and renegotiates the connection PPP monitors the link control packets flowing over the con
9. modem control characters 2 23 3 36 authentication 3 24 CHAP challenge interval 3 30 one way 2 9 timer 3 26 authentication protocols CHAP 2 3 2 8 local 3 24 PAP 2 3 2 8 setting parameters A 18 A 24 use with dial services 2 8 Authentication Timer parameter A 27 B 3 303537 A Rev 00 Index balancing traffic loads 2 15 bandwidth on demand 2 11 2 15 with multilink 2 13 BayStream software 2 12 and LQM 3 32 HSSI link quality monitoring 2 20 IP Enable parameter A 2 BCC show ppp command D 1 BCC starting 1 3 BCC configurable line parameters 3 14 BCN 2 13 2 23 BLN 2 13 BN 2 23 BNCP 2 4 BOFL synchronous line parameter 2 24 Bridge Enable parameter A 6 B 1 Bridge Ethernet parameter A 10 B 1 Bridge FDDI parameter A 11 B 1 Bridge Network Control Protocol 2 4 Bridge Token Ring parameter A 11 B 1 bridging enabling on a PPP interface 3 7 buffer 2 16 bundle multilink 2 14 C CCP 3 9 CCP Enable parameter A 7 B 1 Index 1 Challenge Handshake Authentication Protocol CHAP 2 3 2 8 2 11 3 24 customizing 3 29 setting parameters A 18 A 24 use with dial services 3 29 CHAP Local Name identification mechanism 2 11 CHAP parameters Allow PAP Reject A 25 B 3 CHAP Local Name 3 30 A 24 B 3 CHAP Periodic Timer 3 30 A 25 B 3 CHAP Secret 3 30 A 24 B 3 circuit initializing 2 5 statistics calculating and viewing 3 42 CLAM router 3 31 CLAM router MRU size
10. s authentication phase all password authenticate request messages the peer router sends to this interface must include the correct PAP ID and PAP password Otherwise the interface sends an authenticate NAK message and the link is not created The Local PAP ID parameter specifies the identifier assigned to this interface The identifier can consist of any text string up to 25 characters long There is no default value The Local PAP Password parameter specifies the password assigned to this interface The password can consist of any text string up to 25 characters long There is no default value Using the BCC The BCC does not allow you to configure these parameters Using Site Manager To set a local PAP identifier and local PAP password for this interface do the tasks in the following table Site Manager Procedure You do this System responds k From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Choose Lines The Lines window opens Set Local PAP ID See page A 19 neJ VN Set Local PAP Password See page A 19 If you have no other PPP line parameters to configure click on OK Otherwise continue with the Lines configuration The Interfaces window opens 303537 A Rev 00 3 27 Configuring PPP Services Specifying PAP Parameters for the Remote Peer If the remote peer does not have PAP e
11. 2 10 See also dial services differences between multiline and multilink 2 17 disabling loopback detection 3 38 A 27 disabling PPP 1 5 DSO 2 13 303537 A Rev 00 E Echo Reply Acceptable Loss parameter A 15 B 2 echo reply packet 2 5 acceptable loss 3 19 echo request packet 2 5 2 22 setting interval 3 19 educational services xx Enable LCP parameter A 14 B 2 Enable PAP Fallback parameter A 21 encapsulation 2 10 datagram 2 2 frame structure 2 10 Encrypt Enable encryption parameter 3 13 encryption parameters 3 13 endpoint discriminator 2 3 escape characters 2 23 establishing the PPP link 2 5 F fragmentation minimum size 2 16 packet 2 16 Fragmentation Trigger Size parameter A 13 B 2 frame structure 2 10 H high speed serial interface HSSI 2 20 3 32 l inbound link quality 2 20 3 33 Inbound Link Quality parameter A 23 B 3 initializing a PPP interface 2 5 figure 2 7 interface initializing 2 5 initializing with PPP figure 2 7 unnumbered 3 4 Interfaces window A 13 303537 A Rev 00 interfaces adding or modifying 1 3 Internet Packet Exchange 2 4 Internet Protocol IP 2 4 interoperability one way authentication 2 9 IP 2 4 enabling on a PPP interface 2 25 IP address remote peer 3 4 IP Enable parameter A 3 B 1 IPV6 Enable parameter A 7 IPX 2 4 negotiated network number 3 5 network number for remote peer 3 5 node number for remote peer 3
12. 3 13 network control protocol NCP disabling 2 25 network layer 2 2 network security 2 3 2 8 0 Open Systems Interconnection 2 4 OSI 2 4 OSI Enable parameter A 3 B 1 OSI Network Layer Control Protocol 2 4 outbound link quality 2 20 3 33 Outbound Link Quality parameter A 23 B 3 out of sequence packets 2 16 overview PPP 2 1 P packet fragmentation 2 16 minimun size for fragmenting 2 16 out of sequence 2 16 resequencing 2 15 2 16 PAP 2 3 2 8 2 11 3 24 customizing 3 26 setting parameters A 18 use with dial services 3 26 PAP ID identification mechanism 2 11 local 3 27 remote 3 28 PAP parameters Enable PAP Fallback A 21 B 2 Local PAP ID B 2 local PAP ID A 19 Local PAP Password B 2 local PAP password A 19 Remote PAP ID A 20 B 2 Remote PAP Password A 20 B 2 303537 A Rev 00 PAP password local 3 27 remote 3 28 PAP reject allowing 3 29 parameter descriptions A 1 Password Authentication Protocol PAP 2 8 2 11 3 24 setting parameters A 18 peer definition 2 13 IP address 3 4 Peer Link Quality Report Timer parameter A 22 B 2 physical media multilink 2 14 Point to Point network connection 2 2 point to point protocol PPP 1 1 PPP concepts 2 1 configurable functions 1 2 customizing 3 1 data compression 2 22 definition 1 1 deleting 1 6 disabling and re enabling 1 5 encapsulated frame 2 10 initializing on an interface 2 5 multiline 2 12 m
13. 303537 A Rev 00 A 25 Configuring PPP Services Parameter Path Default Range Function Instructions MIB Object ID Async Control Character Map Protocols gt PPP gt Interfaces gt Lines 655360 0 through 4294967295 0x00 through 0xFFFFFFFF This parameter is relevant only if you use an asynchronous modem During LCP negotiations the peers negotiate the characters that they will recognize as modem control characters The async control character map specifies a value representing one or more asynchronous modem control characters for the peer to recognize escape and that may occur in the data packet Each bit in the map represents a control character from 0x00 through 0x1F The default value serves for almost all modems It escapes the asynchronous modem control sequence XON XOFF 0x11 and 0x13 if they occur in the data stream The values 0x7D and Ox7E are always escaped PPP displays the decimal number equivalent to the string and uses that value in its link negotiations Accept the default value 655360 Ox000A0000 or enter the value corresponding to the asynchronous control character map for the character s that you want recognized escaped in the data stream It is unusual to require a value other than the default If you must create a different map here s how to do it The map consists of 32 bits Each bit corresponds to one control character 0x00 the right end of the map through O
14. 5 IPX Enable parameter A 5 B 1 IPX Network Number parameter A 8 B 1 IPX Remote Node Number parameter A 9 B 1 IPXCP 2 4 ISDN B channel 2 13 2 14 L LCP renegotiating 3 3 3 16 LCP See also link control protocol leased line 2 12 Line Lists window A 13 line parameters A 13 configurable with BCC 3 14 line statistics calculating and viewing 3 42 Lines button A 13 link establishing 2 5 logical communications line 2 13 routing using PPP 2 4 link configuration packet 2 5 link control protocol definition 2 5 negotiations configure ACK 2 6 negotiations configure NAK 2 6 negotiations configure reject 2 6 Index 3 link control protocol continued negotiations configure request 2 5 renegotiation 3 3 link control enabling 3 17 link maintenance packet 2 5 link monitoring 2 20 setting parameters A 21 link quality inbound 3 33 inbound and outbound 2 20 outbound 3 33 link quality monitoring 2 20 3 31 3 32 Link Quality Protocol parameter 2 3 2 20 A 21 B 2 link quality report 2 20 3 31 3 32 period 3 33 timekeeper 3 32 link termination packet 2 5 LINKQR 2 20 LN 2 13 local authentication protocol 3 24 Local Authentication Protocol parameter A 18 B 2 local name CHAP 3 30 local PAP ID 3 27 Local PAP ID parameter A 19 Local PAP Password parameter A 19 loopback detection 3 38 A 27 disabling detection 2 25 LQM See link quality monitoring LQR Rep
15. C 1 wfPppMiIStatsLineCnt C 1 wfPppMiIStatsLinkIdleEvents C 2 wfPppMIStatsNumPktsFragmented 3 42 C 2 wfPppMIStatsReasmBufferMax 3 43 wfPppMIStatsReasmFails 3 43 C 1 wfPppMIStatsReassmBufferCnt 3 43 C 2 wfPppMIStatsReassmBufferMax C 2 wfPppMIStatsReSeqBufferCnt 3 42 C 2 303537 A Rev 00 wfPppMIStatsReSeqBufferMax 3 42 C 2 wfPppMlStatsRxOctets C 1 wfPppMIStatsRxPkts C 1 wfPppMIStatsSeqNumberArrivedLate C 1 wfPppMIStatsSeqNumberLost C 1 wfPppMIStatsTxOctets C 1 wfPppMlStatsTxPkts C 1 wfSyncEntry MIB 3 43 wfSyncMtu 3 43 wfSyncRejectsRx 3 43 wfSyncRejectsTx 3 43 X Xerox Network System XNS 2 4 Xerox Network System Control Protocol XNSCP 2 4 XNS Enable parameter A 4 B 1 Index 7
16. CHAP Periodic Timer parameters for this interface Find these parameters by scrolling further through the list of line parameters e Set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable For all dial services you must use PAP or CHAP either of which provides an identification mechanism that is essential to bring up demand backup and bandwidth lines You must configure CHAP Local Name CHAP Secret PAP ID and PAP Password through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 15 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Local PAP ID Protocols gt PPP gt Interfaces gt Lines None Any text string maximum 25 characters Specifies the PAP ID assigned to this interface During the interface s authentication phase all password authenticate request messages the peer router sends to this interface must include the correct PAP ID Otherwise the interface sends an authenticate NAK message and the link is not created If you have not enabled PAP ignore this field If you set the Local Authentication Protocol parameter to PAPAUTH specify a unique local PAP ID for this interface To implement your changes set the Enable LCP parameter to Disable apply the change and then rese
17. Control Protocol Options cceceeeceeeeeeeeereeeeeee 278 Network Control Protocols and Options ccsccccceseesceseeeeneeereeseeeseeaes 2 4 Comparing Multiline and Multilink 2 0 cece eeeeeeeceeeeeeeeeeeeeeeeeeeeeteeeeees 2 18 PPP Line Parameter Vaiss encrier a 2 24 PER Ge opnara EO 3 11 PPP Line Parameters Configurable with the BCC ecceeseeeeeeee 3 14 PPP merace Parameters cicctccicinscscateadeasiirrieccscdactanadebaetaacedeicaannemntveas B 1 PPP Ling Pans cacti ties wk aianalan es B 2 PPP USE arep deans PT PPR P xiii Preface This guide describes PPP and what you do to start and customize PPP services on a Bay Networks router You can use the Bay Command Console BCC or Site Manager to configure PPP on a router In this guide you will find instructions for using both the BCC and Site Manager If you choose to accept all the default parameters to start PPP on the router you can use either BCC or Site Manager If you choose to configure individual parameters however you will find that several parameters are not yet configurable with the BCC In these cases you must use Site Manager Before You Begin Before using this guide you must complete the following procedures For a new router e Install the router see the installation guide that came with your router e Connect the router to the network and create a pilot configuration file see Quick Starting Routers Configuring BaySta
18. If you do not configure CHAP you cannot use CHAP Local Name for identification instead you must configure PAP For all dial services you must configure CHAP Local Name through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 33 A 24 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID CHAP Periodic Timer Protocols gt PPP gt Interfaces gt Lines 0 disabled Any number of seconds Setting this value to 0 disables the timer A reasonable value for this parameter is 60 Allows for repeated authentication challenges at an interval in seconds that either peer on the link can specify The timer begins counting when an authentication phase has completed A new challenge does not begin until the amount of time you specify elapses Accept the default or set this parameter to 60 If you have not configured CHAP ignore this field 1 3 6 1 4 1 18 3 5 9 2 1 1 35 Allow PAP Reject Protocols gt PPP gt Interfaces gt Lines Disable Enable Disable Some peers do not use PAP If you set this parameter to Enable your router accepts the reject message from such a peer and removes PAP from the LCP configure request Select Enable or Disable If you have not configured PAP ignore this field 1 3 6 1 4 1 18 3 5 9 2 1 1 39
19. Quality Protocol parameter to LINKQR Enter a number representing the interval between the transmission of LQR packets To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 23 A 22 303537 A Rev 00 PPP Parameters Parameter Path Default Range Function Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Inbound Link Quality Protocols gt PPP gt Interfaces gt Lines 90 percent O through 100 Specifies the minimum acceptable success rate percentage of packets the peer router transmits and this router receives on this interface over the last 5 LOR reporting periods Use this parameter only when you enable the Link Quality Protocol parameter If the percentage drops below the inbound link quality you specify the router brings down the link until the percentage increases to an acceptable level 1 3 6 1 4 1 18 3 5 9 2 1 1 25 Outbound Link Quality Protocols gt PPP gt Interfaces gt Lines 90 percent O through 100 Specifies the minimum acceptable success rate percentage of packets the router transmits and the peer router receives on this interface Use this parameter only when you enable the Link Quality Protocol parameter If the percentage drops below the outbound link quality you specify the router brings down the link until t
20. This parameter does not enable or disable IPv6 routing services for the interface However disabling the network control protocol for IPv6 stops IPv6 traffic from being routed over this interface To stop IPv6 traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 69 303537 A Rev 00 A 7 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Remote IP Address Protocols gt PPP gt Interfaces 0 0 0 0 Any valid IP address Specifies the IP address the peer router should use This interface includes this IP address in NCP negotiations If you want to specify an IP address for the peer router enter it here If this interface has been up and running you must also set the IP Enable parameter to Disable apply the change and then reset the IP Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 22 IPX Network Number Protocols gt PPP gt Interfaces None Any valid unique unreserved network number This number must be a string of up to eight hexadecimal characters Oxffffffff is invalid Specifies a network number used to negotiate the link The negotiated number must be unique It cannot be a previously assigned network number Enter a valid IPX network number for this PPP interface T
21. VINES traffic from being routed over this interface set this parameter to Disable This parameter enables or disables the network control protocol for VINES It does not enable or disable VINES routing services for the interface However disabling the network control protocol for VINES stops VINES traffic from being routed over this interface To enable or disable VINES support on this interface do the tasks in the following table Site Manager Procedure You do this System responds From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set VINES Enable See page A 6 e N If you have no other Interface parameters to configure click on OK Otherwise continue with the Interface configuration The Configuration Manager window appears 303537 A Rev 00 Customizing PPP Enabling DECnet IV Support on This Interface If you enabled DECnet IV support when you first configured PPP on this interface the DECnet IV Enable parameter defaults to Enable otherwise the default is Disable To stop DECnet IV traffic from being routed over this interface set this parameter to Disable This parameter enables or disables the network control protocol for DECnet IV It does not enable or disable DECnet IV routing services for the interface However disabling the network control protocol for DECnet IV stops DECnet IV traffic from
22. alerts routes you enter either show ip alerts or show ip routes but not both 303537 A Rev 00 xvii Configuring PPP Services Acronyms BNCP Bridge Network Control Protocol BNX Backbone Node Switch BOFL Breath of Life message CCP Compression Control Protocol CHAP Challenge Handshake Authentication Protocol CRC cyclic redundancy check DNCP DECnet Phase IV Control Protocol FCS Frame Check Sequence FDDI Fiber Distributed Data Interface HDLC high level data link control HSSI High Speed Serial Interface IP Internet Protocol IPCP IP Control Protocol IPX Internetwork Packet Exchange IPXCP IPX Control Protocol LAN local area network LCP link control protocol LQM link quality monitoring LQR link quality report MAC media access control MIB Management Information Base MTU maximum transmission unit NCP network control protocol OSI Open Systems Interconnection OSINLCP OSI Network Layer Control Protocol PAP Password Authentication Protocol RFC Request for Comment xviii 303537 A Rev 00 Preface SMDS Switched Multimegabit Data Service SNMP Simple Network Management Protocol TCP IP Transmission Control Protocol Internet Protocol TFTP Trivial File Transfer Protocol VINES Virtual Networking System VNCP VINES Network Control Protocol WAN wide area network XNS Xerox Network System XNSCP Xerox Network System Control Protocol Bay Networks Technical Publications You can now print Bay Networks technical manuals and
23. as described in Chapter 1 Starting PPP Services and that you understand the PPP concepts in Chapter 2 PPP Concepts You should have read Configuring and Managing Routers with Site Manager or Using the Bay Command Console as appropriate for your platform and the tool you are using If you are using Site Manager you should also have 1 Opened a configuration file 2 Specified router hardware if this is a local mode configuration file 3 Selected the link or net module connector on which you are enabling PPP You can enable PPP services most easily by accepting all the default parameter values You do not have to configure any PPP parameters for PPP to run on your system If however you choose to change some or all of the default parameters you ll find the information you need in this chapter Site Manager lets you configure all of the PPP parameters BCC lets you configure a subset of the PPP Line parameters For a list of all PPP parameters see Appendix A PPP Parameters Topic Page Enabling PPP on an Interface 3 2 Setting Up Remote Addresses 3 4 Enabling Bridging on an Interface 7 Enabling VINES Support on This Interface 3 8 Enabling DEGnet IV Support on This Interface 3 9 303537 A Rev 00 3 1 Configuring PPP Services Topic Page Enabling Data Compression
24. being routed over this interface To enable or disable DECnet IV traffic on this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set DECnet IV Enable See page A 4 PLE If you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears continue with the Interface configuration Enabling Data Compression on This Interface If you enabled data compression when you initially configured this interface then data compression is configured by default for PPP otherwise the default is Disable To stop compression over this interface set this parameter to Disable This parameter allows or stops data compression It does not enable or disable data compression for the interface but disabling the Compression Control Protocol CCP stops data compression over this interface To enable or disable data compression on this interface do the tasks in the following table 303537 A Rev 00 3 9 Configuring PPP Services Site Manager Procedure You do this System responds Sk From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set CCP Enable See page A 7 naa Ea a If you hav
25. 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 successors 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
26. enable Using Site Manager To enable IP routing over this PPP interface do the tasks in the following table Site Manager Procedure You do this System responds i From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set IP Enable to Enable See page A 3 PLE If you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears continue with the Interface configuration The rest of this chapter describes how to configure and customize PPP for your system Follow the instructions that apply to your network requirements Note If you are using Site Manager and dynamically configuring a router that has already negotiated its Link Control Protocol you must force LCP renegotiation on the interface to implement your changes To do this disable and then reenable the corresponding network control protocol s You can change as many parameters as you need to before forcing the renegotiation After making all your changes to any of the addressing or routing protocol enabling parameters 1 Set the corresponding network control protocol parameter for example IP Enable to Disable and if necessary apply the changes 2 Reset the same parameter to Enable and if necessary apply the changes Refer to the description of enabling specific protocols for details 303537 A R
27. enter the following command after setting the link quality protocol to LINKQR Iqr percentage sent percent percent is an integer in the range 0 through 100 Summary Example for BCC Link Monitoring Commands This example shows for the PPP line on slot 3 circuit 1 how to use BCC to Enable link quality monitoring Specify that the remote peer should maintain the LQR timer Specify an LQR reporting period of 5 seconds Set the acceptable inbound success rate to 85 Set the acceptable outbound success rate to 85 line 3 1 link quality protocol LINKOQR line 3 1 peer lqr timer enable line 3 1 lqr reporting period 5 line 3 1 lqr percentage received 85 line 3 1 lqr percentage sent 85 303537 A Rev 00 3 35 Configuring PPP Services Using Site Manager To configure link quality monitoring on this PPP interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set Link Quality Protocol See page A 21 4 Set Peer Link Quality Report Timer See page A 22 5 Set LQR Reporting Period See page A 22 6 Set Inbound Link Quality See page A 23 7 Set Outbound Link Quality See page A 23 8 If you have no other Interface parameters to configure click on OK Otherwise continue with
28. following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Echo Reply Acceptable Loss See page A 15 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Specifying the Maximum Number of Configure Request Packets The Max Configure Requests parameter specifies the maximum number of unacknowledged configure request packets that the router transmits before assuming that the peer router on the other end of the link is unable to respond The link is then brought down Valid acknowledgments include configure ACK configure NAK or configure reject packets The default value is 10 packets Using the BCC Navigate to the line prompt for the circuit and enter max configure requests seconds 3 20 303537 A Rev 00 Customizing PPP For example the following command sets the maximum number of unacknowledged configure request packets allowed to 5 on circuit 3 1 line 3 1 max configure requests 5 Using Site Manager To set the maximum number of unacknowledged configure request packets allowed on this interface do the tasks in the following table Site Manager Procedure You do this System responds Fr
29. on This Interface 3 9 Enabling IPv6 on This Interface 3 10 Specifying the Type of Connection PPP Mode 3 11 Configuring Data Encryption 3 13 Disabling Network Control Protocols 3 13 Customizing PPP Lines 3 14 Editing PPP Line Parameters 3 15 Enabling Link Control on a Line 17 Setting Transmission Parameters 3 18 Customizing PPP Authentication Parameters 3 24 Setting Up Link Quality Monitoring 3 31 Specifying the Asynchronous Modem Control Character Map 3 36 Disabling Loopback Checking 3 38 Setting the Maximum Receive Unit MRU 3 39 Enabling RFC 1661 Compliance for Dial Circuits 3 41 Viewing Line Statistics for Multilink Circuits 3 42 Where to Go Next 44 Enabling PPP on an Interface If you have already enabled PPP on the circuit that you want to configure go to Setting Up Remote Addresses on page 3 4 If you haven t already done so you must enable PPP on the interface To do this refer to Chapter 1 Starting PPP Services By default the protocol that you selected when you first configured this interface is enabled If you want to enable a different protocol you can do so as part of the customization BCC supports only IP Using the BCC To enable IP routing on a given interface navigate to the IP prompt and enter state enable 303537 A Rev 00 Customizing PPP For example the following command enables IP routing on the interface with the IP address of 1 1 1 1 ip 1 1 1 1 state
30. on the configuration you may have to specify explicitly certain other parameters For more information on these parameters refer to Configuring and Managing Routers with Site Manager depending on your platform 2 24 303537 A Rev 00 PPP Concepts Configuring IP to Run over PPP Interfaces When you enable numbered Internet Protocol IP support on a PPP interface you must also configure an adjacent host entry for the peer router See Configuring IP Services for instructions on configuring an adjacent host entry Detecting Loopback Conditions As part of its network integrity checking PPP tests for a loopback condition in which effectively it is talking to itself and not communicating with the network Normally you would want this feature enabled For test purposes however you can disable this loopback detection feature by using the Technician Interface After disabling this parameter you must explicitly set it to Enable to reenable loopback checking See Disabling Loopback Checking in Chapter 3 for instructions on how to set this parameter PPP Interoperability The Bay Networks implementation of PPP conforms to the following RFCs 1332 1333 1334 1378 1552 1638 1661 1662 1762 1763 and 1764 Therefore it can interoperate with routers that also conform to the same standards If you have questions about whether a particular router can interoperate with your Bay Networks router running PPP contact the Bay N
31. you are configuring This section deals with how you use Site Manager to configure each of these PPP modes Table 3 1 compares the various PPP modes Table 3 1 PPP Modes PPP Mode Connection Type Value Comments Any nonmulitlink circuit Normal This is the default value for any nonmultilink connection Multiline Normal Same as single line connection Multilink Multilink Set the PPP Mode parameter to Multilink or to configure the circuit for multilink Monitor operation e Set it to Monitor if you want the local router to serve as the congestion monitor for the multilink circuit Only one side of any connection should be the monitor For a description of the differences between multiline and multilink connections see Differences Between Multiline and Multilink in Chapter 2 For more information about multiline connections see Configuring Dial Services To configure the PPP mode on this interface do the tasks in the following table Site Manager Procedure You do this System responds From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set PPP Mode See page A 12 a N If you have no other Interface parameters to configure click on OK Otherwise continue with the Interface configuration The Configuration Manager window appears 303537 A Rev 00 Configuring PPP Services
32. 7 A Rev 00 Chapter 1 Starting PPP Services PPP is a standard point to point protocol for sending data packets over serial synchronous and asynchronous lines This chapter describes how to create a basic PPP configuration by specifying values for required parameters only and accepting default values for all other parameters of PPP Topic Page Summary of PPP Services 1 2 Starting Configuration Tools 13 Adding or Modifying Interfaces for PPP 1 3 Starting PPP Services 1 4 Disabling and Reenabling PPP Services 1 5 Deleting PPP Services 1 6 Where to Go Next 1 7 303537 A Rev 00 1 1 Configuring PPP Services Summary of PPP Services You can configure PPP to perform the functions shown in the following table A check mark indicates whether you can configure a particular function with the tool shown at the top of the column Table 1 1 PPP Configurable Functions Site Function BCC Manager Route data over a PPP link v v Perform data compression v Run PPP over dial up lines v v Run PPP over multiple lines v Run PPP over a multilink circuit v Set up protocol prioritization on a multiline circuit v Configure IP to run over PPP interfaces v v Enable and disable network control protocols v v Use PPP with asynchronous modems v Calculate and view line and circuit statistics v Configure authentication protocols v Set up link quality monitoring v v Configure echo requests
33. Customizing PPP Configuring Data Encryption Bay Networks offers software based data encryption services for PPP dedicated links for the BN AN ARN ASN System 5000 router modules and all serial interfaces This includes encryption on multiline and multilink circuits If you configure data encryption on a PPP circuit the encryption parameter fields Mode Protection Key Encrypt Enable LTSS Name and LTSS Value on the PPP Interface Lists window are filled in Otherwise these fields are inactive While you can change these parameters through the PPP Interface Lists window they are only part of a suite of encryption parameters and any changes you make can have significant effects on the entire encryption process Therefore before changing any of these encryption parameters please see Configuring Data Encryption Services for a full description of all the available data encryption parameters Disabling Network Control Protocols To stop traffic from routing over a PPP interface either e Disable the NCP for the upper level routing protocol For example if you disable the NCP for IP by setting the IP Enable parameter to Disable even though IP is still enabled on the interface it is no longer able to route traffic over the interface e Disable the upper level routing protocol itself If you disable the routing protocol running on top of the PPP interface you also automatically disable the NCP for the routing protocol Fo
34. D Max Configuration Failure Count Protocols gt PPP gt Interfaces gt Lines 10 1 through 100 Specifies the maximum number of configure NAK packets the router sends before sending a configure reject packet for those options that it does not agree with Accept the default value of 10 If you enter a different value you must set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 12 303537 A Rev 00 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Local Authentication Protocol Protocols gt PPP gt Interfaces gt Lines CHAP for dial services None for all others None PAPAUTH CHAP Specifies the type of authentication protocol that this interface uses none PAP Password Authentication Protocol or CHAP Challenge Handshake Authentication Protocol If you do not want to enable security features on this interface accept the default None To enable Password Authentication Protocol select PAPAUTH Then do the following e Define the Local PAP ID and Local PAP Password parameters for this interface e Set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable To enable Challenge Handshake Authentication Protocol select CHAP Then do the following e Define the CHAP Secret CHAP Local Name and
35. Multilink E T E E gee 2 17 Differences Between Multiline and Multilink ssssssssssesnesnnesnssnnsnnssnnsrnennenntnnsnnnnnnsnnnnn ne 2 17 Montornng PPP Link QUADY seseris mn eearri EAE 2 20 FFF Dan nr Ol ronnan E 2 22 Synchronous Versus Asynchronous Connections cccccceceeeeeeeeeeeenceeaeeeeeeteeeeeeeeee 2 23 Recognizing Asynchronous Modem Control Characters e esseeeeeeeeeeeeeeees 2 23 PPP Gne Par aie tal adel sires a a acai Ri 2 24 Contiguring IP to Run over PPP Interlaces ciscsccssnscsarasennnscssgaracsnadganansetncsantvesigatensonnn n 2 25 Detecting Loopback CondilOnS scissa A 2 25 PEP MOr pa ADIN aii A TEA 2 25 Stopping the Flow of Traffic over a PPP Interface scisccicictecceccncrconcsestescnteenieuisivsdartundene 2 25 VRT O NOE i E A 2 26 Chapter 3 Customizing PPP Enabing FPFF onam Wei sansurin NE 3 2 Setting Up Remote AddrosS0S cd ciiccasastchrecsnluirvauedsiienessasiimrassratacueessatiuieradidiuaudsinncins 3 4 Defining an IP Address for a Remote Peer sssasssseessssseseserneserennnerrennesrnennennrnnnenennn 3 4 Defining an IPX Network Number and Node Number for a Remote Peer 3 5 COMTI Apple Talk sccxcacnnntaxxcacnedocdenexwnecceanereraniannaaanaeterdeh i a Defining a Remote AppleTalk Node number fot a Banoi Past iaxcehianecsiasanetices 3 6 Defining the AppleTalk Routing Protocol c cccsceceseeeeeeeeeeeeeeeeeeeeeeeseneeenaees 3 6 Enabling VACUA TSU Sages ncn chee pneddadancnecad
36. OWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT UNDERSTANDS IT AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS LICENSEE FURTHER AGREES THAT THIS 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 303537 A Rev 00 Contents Preface Before YOU BEGIN ssie nna a aated Sarea a TEERAA XV TORE COMMOTION siosio naa e a xvi PTO S a an ved tuassaceneah aan tance ania einen trees xviii Bay Networks Technical PUDNCANONS co imiiecdvetxessexapsmnmanagarioinaadad ioretiaiacimonsdaveretanxcannaecieo he How TO GoLHOID scroscio EE XX Chapter 1 Starting PPP Services oummay OF PPP SSMS lt icii ri ccictaciaaistarrnadene R E a 1 2 a Te NOT aN WSC a E 1 3 Adding or Modifying Interfaces for PPP Actes Dateien eee lath PPP SSMS serecek EA 1 4 Disabling and Reenabling PPP Services ccccceesceeeceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeseeenaees 1 5 DLIMA FPP Satie ccoee ss acs sigue oetase eae memes T PATRO O MEN te crticacesytattens sietesttppaeddetdieus yacaditunad ene uagundettinhy Meohi ua aeaRRasaERR AAR 1 7 Chapter 2 PPP Concepts PPP OVErVISA asanace a aE E Qaaanmack
37. RejectsTx counts the number of times a packet grows larger than its transmit buffer If either of these conditions occurs lower the size of the maximum transmission unit MTU wfSyncMtu on both the local and remote peers 303537 A Rev 00 3 43 Configuring PPP Services Where to Go Next Go to Chapter 1 Starting PPP Services for instructions on how to start PPP on your router Go to Chapter 2 PPP Concepts to learn more about PPP concepts and characteristics Go to Appendix A for a list of all PPP parameters Go to Appendix B for a list of PPP parameter default values Go to Appendix C for a list of the PPP statistics that you can view Go to Appendix D for descriptions of the BCC show commands for BCC 3 44 303537 A Rev 00 Appendix A PPP Parameters This appendix lists the parameters for the PPP interfaces that you can configure on the router For each PPP parameter this appendix gives the Site Manager path the default setting all valid parameter options or ranges the parameter function instructions for setting the parameter and the Management Information Base MIB object ID Refer to Chapter 3 for a full description of the tasks to which these parameters pertain After you enable PPP you can edit all PPP parameters For instructions on using Site Manager to edit PPP parameters refer to Configuring and Managing Routers with Site Manager as appropriate for your platform Alternatively you can us
38. Rev 00 Monitoring PPP Using the BCC show Command show ppp enabled The BCC show ppp enabled command displays information about the protocols enabled on the specified PPP circuit The output contains the following information Circuit The circuit for which this command displays information Line The line within the circuit to which this information applies Protocol The protocol enabled on this line State The operational state of this line show ppp interfaces The BCC show ppp interfaces command displays configuration information for each type of interface configured on each circuit The output contains the following information Circuit The circuit for which this command displays information Slot lt Module gt Conn Names the physical interface Driver State The operational state of the driver if one is present Protocol The protocol or protocols configured on this circuit State The operational state of each configured protocol Line State The operational state of each line in the circuit 303537 A Rev 00 D 3 Configuring PPP Services show ppp ip The BCC show ppp ip command displays information about the PPP IP configuration The output contains the following information Circuit State Local Config Local Address Remote Config Remote Address show ppp ipx The circuit for which this command displays information The operational state of the interface The IP address that this router wa
39. The protocol that you selected when you first enabled PPP on the circuit is enabled by default You can enable a different protocol by editing PPP protocol parameters as described in Chapter 3 Transparent Translation Bridge and Source Route Bridge are other routing media that you can enable over any PPP interface The PPP bridge accepts incoming traffic from any media Ethernet FDDI token ring and forwards data transparently or translates when necessary Initializing a PPP Interface PPP creates an interface between peer routers to allow them to exchange data The routers initialize the interface in three phases 1 Establishing the PPP link 2 Authenticating the link optional for leased lines 3 Negotiating network layer protocols The following sections describe each phase Establishing the PPP Link PPP s Link Control Protocol LCP helps establish a link LCP generates three types of packets e Link configuration packets including configure request configure ACK configure NAK and configure reject packets e Link termination packets including terminate request and terminate ACK packets e Link maintenance packets including code reject protocol reject echo request and echo reply packets When two routers initialize a PPP dialogue each of them sends a configure request packet to the other peer router Each configure request packet contains a list of LCP options and corresponding values that the sending router us
40. ame of the remote router 303537 A Rev 00 D 5 Configuring PPP Services show ppp ipx negotiated The show ppp ipx negotiated command displays information about the PPP IPX negotiated connection The output contains the following information Circuit Names the physical interface State The operational state of the interface Network Number The negotiated IPX network number Config Complete Indicates whether IPXCP converged on all required options Routing Protocol The negotiated IPX routing protocol used on the link show ppp line The BCC show ppp line command displays information about the PPP lines configured for the specified interface show ppp line async map The show ppp line async map command displays information about the PPP async control character map configured for the specified interface The output contains the following information Circuit The circuit for which this command displays information Slot lt Module gt Conn Names the physical interface Configured Async Map The configured value of the async control character map Actual Async Map The actual value of the async control character map D 6 303537 A Rev 00 Monitoring PPP Using the BCC show Command show ppp line config The show ppp line config command displays information about the configured PPP line parameter values for the specified interface The output contains the following information Circuit Slot lt Mod gt Conn LCP
41. an communicate only with a router running Version 10 0 or later software because earlier versions do not support the multilink feature Attempting to run multilink on a pre 10 0 version results in the multilink circuit dropping back to multiline Configuring Multilink Operation You configure a PPP multilink circuit by selecting the appropriate value in the PPP Mode parameter for the intended circuit This parameter controls whether the local side of the bundle attempts to negotiate the multilink protocol and whether the local circuit operates as the congestion monitor for bandwidth on demand The congestion monitor locally monitors traffic congestion on the circuit Only one side of any connection should be the congestion monitor Balancing Traffic Loads In a configuration with multilink enabled a sending router divides the outbound traffic among all the lines in the bundle The configured external clock speed of each line determines the proportion of the total traffic each receives For example pairing a 9600 bit second line with an ISDN B channel yields a clock speed ratio of roughly 1 6 8 assuming same size packets That is for every packet sent on the slower link the router can send about seven packets on the faster link On the receiving end multilink resequences packets arriving on different links using the sequence number from the multilink header Gaps in the ordering may occur however when packets are corrupted or otherwise lo
42. and show ppp lqr stats The show ppp Iqr stats command displays information about the PPP link quality reporting statistics for the specified interface The output contains the following information Circuit Slot lt Mod gt Conn LCP State LQR Repeat Period Inbound Quality Outbound Quality LQR In LQR Out The circuit for which this command displays information Names the physical interface The operational state of the Link Control Protocol The maximum number of seconds between the transmission of LQR packets The minimum acceptable success rate percentage of packets that the peer router sent and this router received on this interface over the last five LQR reporting periods The minimum acceptable success rate percentage of packets that this router sent on this interface and the peer router received The current inbound quality The current outbound quality 303537 A Rev 00 D 9 A acronyms xviii adding interfaces 1 3 address IP remote peer 3 4 AFN 2 13 allow PAP reject 3 29 Allow PAP Reject parameter A 25 AN 2 13 2 23 AppleTalk 2 4 configuring on a PPP interface 3 6 node number for remote peer 3 6 routing protocol 3 6 AppleTalk Control Protocol 2 4 AppleTalk Enable parameter A 5 B 1 AppleTalk Routing Protocol parameter A 10 B 1 ASN 2 13 2 23 async control character map 2 24 Async Control Character Map parameter A 26 B 3 asynchronous connection 2 23 modem 2 23
43. and Local PAP Password parameters for this interface To enable Challenge Handshake Authentication Protocol select CHAP Then define the CHAP Secret CHAP Local Name and CHAP Periodic Timer parameters for this interface Using the BCC The BCC does not allow you to configure this parameter Using Site Manager To set the local authentication protocol for this interface do the tasks in the following table Site Manager Procedure You do this System responds From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Choose Lines The Lines window opens pN Set Local Authentication Protocol See page A 18 If you specified e None continue with the next step in this table PAPAUTH or CHAP continue with Setting a Time Limit for Authentication on page 3 26 6 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration a 303537 A Rev 00 3 25 Configuring PPP Services Setting a Time Limit for Authentication You can specify the maximum number of seconds the router waits for a response to its authentication messages by setting the Authentication Timer parameter If the timer expires before the negotiation completes the router drops the connection The default value is 10 seconds Using the BCC The BCC does n
44. ation Failure Count 0 eerie 3 22 Setting a Time Limit for COMVERISHORS cicicssstsicite ortaceds Wakennaidn i boos 3 23 Customizing PPP Authentication Parameters crccierssisssitcondcncstaeosadaiannondsadsseraeatagdaanvaaie 3 24 Setting a Time Limit for Authentication sissies cteecessivenmcdeccsinionecttanieneecetnanieneeresiantine 3 26 GuUStOmZNO PAP arisandi E A A 3 26 Specifying Local PAP Parameters icc iaesissseicedivnrsdddjaneaseeeuecesetignnaredalanmenetegee ee Specifying PAP Parameters for the Remote Peer EE EEA ETE PEE ST 3 28 Allowing PAP REGION sesura aaa a lau ea 3 29 CUSTOMIZING CHAP cessere E E 3 29 SPScivinG the CHAP TOCIT senusien 3 30 Specifying the CHAP Local Name cs iscssuncoridlonceridasseuopeiionvnoerindsldeeriadisoonerndancae OO Specifying the CHAP Authentication Challange interval E 3 30 Enabling PAP e cl Siroun anea a a R 3 30 Configuring PPP Interoperability with CLAM aasssseeeseeseerrecessresreeressn OO I Setting Up Link Quality MONR rnNg arsena 3 31 Enabling Link Quality Monitoring and Reporting ccccceccceecceeeeeeeeeeeteeeeeeeaes 3 32 Establishing the Timing of Link Quality Reports eeccecseeeeesseceeeeeeeeeeeeeeeseeeeees 3 32 Designating the Link Quality Report Timekeeper ce eeeeceeceeeseeeeeeeeeeeees 3 32 Specifying the Link Quality Reporting Period 0 cceesssceeeeeeecceeeeeeeeeeeeees a 8 33 Specifying the Inbound Link Quality sscsssnccccrcimnecssrisma
45. automatically configures or deletes compression as lines are added to or removed from the circuit For complete descriptions of hardware and software data compression descriptions of compression parameters and instructions for configuring compression over a PPP interface see Configuring Data Compression Services 2 22 303537 A Rev 00 PPP Concepts Synchronous Versus Asynchronous Connections When you configure a dial switched circuit you can specify whether you want transmission on that circuit to be synchronous or asynchronous Switched services include dial on demand bandwidth on demand and dial backup These function independently of the physical modem communication method In synchronous transmissions the timing of each data transfer has a specific time relationship to the previous and next data transfer Synchronous data transfers are fast because of the low network overhead relative to the amount of data transferred in each block but they require more expensive clock driven data transmission equipment In general you might use synchronous data transmission for large data transfers Asynchronous communication on the other hand does not rely on a clock to define the beginning and end of a transmission It uses lower cost asynchronous modems and appends a start and a stop bit to each transmission This adds overhead to each data transfer but it is often acceptable in lower speed less than 56KB for example and lo
46. blishes the link CHAP uses an incrementally changing identifier and a variable challenge value to provide network security It also allows for repeated challenges at intervals that either router on a link can specify A router may transmit challenge packets not only during the link establishment phase but also at any time during the network layer protocol phase to ensure that the connection retains its integrity If CHAP fails the network administrator must change the identifiers and secret on both peer routers and disable and reenable LCP to reinitialize the line Note For all dial services you must use PAP or CHAP either of which provides an identification mechanism that is essential to bringing up dial on demand bandwidth on demand and dial backup lines Failure of either authentication protocol causes the connection to be dropped without the network administrator s intervention 2 8 303537 A Rev 00 PPP Concepts One Way Authentication One way authentication uses an authentication protocol on only one side of a dial up connection The router placing the call disables the authentication protocol for a circuit while the router on the receiving side enables authentication Disabling the outbound authentication lets the router interoperate with other devices that may not allow two way authentication or support CHAP The receiving router can use both PAP and CHAP in the same line pool When the router receives a ca
47. bridging services for the interface However disabling the network control protocol for the bridge stops traffic from being bridged over this interface With the bridging feature enabled you can then enable or disable bridging for particular encapsulation types For example if you want PPP to accept and forward Ethernet encapsulated bridged traffic set the Bridge Ethernet parameter to Enable the default To enable or disable bridging on this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set Bridge Enable See page A 6 303537 A Rev 00 3 7 Configuring PPP Services Site Manager Procedure You do this System responds 4 Enable or disable the encapsulation mode for the type of traffic bridged on this interface Set Bridge Ethernet See page A 10 Set Bridge FDDI See page A 11 Set Bridge Token Ring See page A 11 If you have no other Interface parameters to configure click on OK Otherwise continue with the Interface configuration The Configuration Manager window appears Enabling VINES Support on This Interface If you enabled VINES support when you first configured PPP on this interface this parameter defaults to Enable otherwise the default is Disable To stop
48. ch as the minimum size of packets to be considered for fragmentation wfPppMIStatsReasmFails is an event counter of failures to reassemble a fragmented packet If this number is high either you are losing fragments or your reassembly buffer count is at or near the maximum number of buffers allowed as indicated in wfPppCircuitMaxBuffers Reset the maximum number of buffers allowed to a higher number wfPppMIStatsReassmBufferCnt is the number of fragments that the receiver has stored pending reassembly Typically this number is higher in configurations with greatly differing line speeds If this number is constantly at or near the maximum number of buffers allowed as indicated in wfPppCircuitMaxBuffers reset the maximum number of buffers allowed to a higher number wfPppMIStatsReassmBufferMax is the maximum number that wfPppMIStatsReassmBufferCnt ever reached wfPppMIStatsExceededBufferMax indicates the number of times the sum of wfPppMIStatsReassmBufferCnt and wfPppM StatsReSeqBufferCnt exceeded the specified maximum allowable number of buffers as indicated in wfPppCircuitMaxBuffers As a side effect of reaching or exceeding wfPppMIStatsExceededBufferMax you may see the value of wfPppM1StatsSeqNumberArrived Late increase If so it may indicate that you should increase wfPppCircuitMaxBuffers e Inthe wfSyncEntry MIB wfSyncRejectsRx counts the number of times a packet arrives that is larger than a receive buffer wfSync
49. ck Remote Access or Connecting ASN Routers to a Network Make sure that you are running the latest version of Bay Networks BayRS and Site Manager software For information about upgrading BayRS and Site Manager see the upgrading guide for your version of BayRS 303537 A Rev 00 XV Configuring PPP Services You must also create and save a configuration file that contains at least one WAN interface then retrieve the configuration file in local remote or dynamic mode See Configuring and Managing Routers with Site Manager depending on your platform for information and instructions about the following topics e Initially configuring and saving a WAN interface e Retrieving a configuration file e Rebooting the device with a configuration file Text Conventions This guide uses the following text conventions angle brackets lt gt bold text braces Indicate that you choose the text to enter based on the description inside the brackets Do not type the brackets when entering the command Example If the command syntax is ping lt p_address gt you enter ping 192 32 10 12 Indicates text that you need to enter and command names and options Example Enter show ip alerts routes Example Use the dinfo command Indicate required elements in syntax descriptions where there is more than one option You must choose only one of the options Do not type the braces when entering the command Examp
50. continue with the Interface configuration 303537 A Rev 00 Customizing PPP Defining an IPX Network Number and Node Number for a Remote Peer Site Manager lets you specify an IPX network number and an IPX node number that you want the remote peer to use The interface uses these numbers in its NCP negotiations Enter the IPX network number for the remote peer to use There is no default value you can enter any unique valid unreserved IPX network number consisting of a string of up to eight hexadecimal characters The value Oxffffffff is invalid The negotiated network number must be unique It cannot be a previously assigned network number Note that both sides of the link do not have to have the same network number PPP negotiates the higher of the two numbers In addition the negotiated IPX network number can be 0 on both sides of the link In this case IPX defines the link s network number Be aware that the value for this parameter depends on the IPX configuration for this interface For information about IPX and PPP interaction refer to Configuring IPX Services If you want to specify an IPX node number for the remote peer to use enter it here The interface uses this IPX remote node number in its NCP negotiations To specify an IPX network number and remote node number do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu ch
51. ctions MIB Object ID Bridge FDDI Protocols gt PPP gt Interfaces Enable Enable Disable Specifies whether this PPP interface accepts bridged traffic that is FDDI encapsulated then forwards it over the PPP network Set to Disable to refuse bridged FDDI encapsulated frames on this PPP interface If this interface has been up and running you must also set the Bridge Enable parameter to Disable apply the change and then reset the Bridge Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 42 Bridge Token Ring Protocols gt PPP gt Interfaces Enable Enable Disable Specifies whether this PPP interface accepts bridged traffic that is token ring encapsulated then forwards it over the PPP network The token ring network must support source routing the router expects all token ring bridged frames to be source routed Set to Disable if you do not want the PPP interface to accept bridged token ring encapsulated frames If this interface has been up and running you must also set the Bridge Enable parameter to Disable apply the change and then reset the Bridge Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 44 303537 A Rev 00 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID PPP Mode Protoc
52. d over this interface To stop DECnet IV traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 15 A 4 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID AppleTalk Enable Protocols gt PPP gt Interfaces If you enable AppleTalk support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for AppleTalk This parameter does not enable or disable AppleTalk routing services for the interface it affects the network control protocol for AppleTalk However disabling the network control protocol for AppleTalk stops AppleTalk traffic from being routed over this interface To stop AppleTalk traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 16 IPX Enable Protocols gt PPP gt Interfaces If you enable Internet Packet Exchange IPX support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for IPX This parameter does not enable or disable IPX routing services for the interface it af
53. dress Control Protocol Data FCS Flag 1 byte 1 byte 1 byte 2 bytes Variable 2or4 1 byte bytes PPP0003A Figure 2 3 PPP Encapsulated Frame The parts of the PPP frame function as follows e The flag field marks the beginning and end of a frame Peers on synchronous lines exchange flags continuously when there are no frames to transmit e The address field indicates which device originated the frame e The control field shows the frame type information or administrative e The protocol field indicates the operative network layer protocol e The data field contains the data one link sends to the other Its length is less than or equal to the MTU line size The default maximum length is 1594 bytes LCP negotiations determine the actual length e The frame check sequence FCS field shows the sequence order of the frame router hardware computes the FCS A 16 or 32 bit cyclic redundancy check CRC is at the end of each frame PPP Dial Services Support Bay Networks dial services offer access to switched networks through dial up line connections also called switched lines that are active only when you choose to use them In contrast a leased line is always available If you transmit limited amounts of data or if your data transmission is intermittent dial services may let you run your network more effectively and economically 2 10 303537 A Rev 00 PPP Concepts PPP is automatically configured on lines that you select fo
54. duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 4i of the Rights in Technical 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
55. e 0x1f 31 decimal so to escape that character set the leftmost bit in the map Do the same thing for each control character Once you ve decided what bits in the map to set you can enter either the hex character equivalent to the bit string or the decimal equivalent To escape all control characters in the packet set the map to Oxffffffff For a description of how PPP encodes escaped control characters in the data stream refer to Chapter 2 PPP displays the decimal number equivalent to the string and uses that value in its link negotiations Using the BCC The BCC does not allow you to configure this parameter Using Site Manager To allow the peers to negotiate the use of asynchronous modem control characters for this line do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens continued 303537 A Rev 00 3 37 Configuring PPP Services Site Manager Procedure continued You do this System responds 4 Set Async Control Character Map See page A 26 5 If you have no other PPP line parameters to configure click on OK Otherwise continue with the Lines configuration The Interfaces window opens Disabling Loopback Checking For test purposes you can disabl
56. e CHAP local name through the Dial menu See Configuring Dial Services for details 303537 A Rev 00 3 29 Configuring PPP Services Specifying the CHAP Secret If you have enabled CHAP specify the secret There is no default value The function of the CHAP secret is similar to a password but its use is slightly different Both peers on a link must have the same secret to correctly calculate responses to challenges either one of them may send to the other during the authentication process and network layer negotiation phase You can assign a text string up to 20 characters long as the CHAP secret for this interface Specifying the CHAP Local Name A local CHAP name informs the peers of each other s identity Specify the CHAP local name as a text string of up to 20 characters There is no default value If you configure CHAP as an authentication protocol you must use CHAP Local Name for router identification on a dial on demand bandwidth on demand or dial backup line If you do not configure CHAP you cannot use CHAP Local Name for identification instead you must configure PAP Specifying the CHAP Authentication Challenge Interval The CHAP Periodic Timer parameter indicates the interval in seconds that must elapse between CHAP challenges You can specify any number of seconds Setting this value to 0 the default disables the timer A reasonable value for this parameter is 60 PPP allows repeated authentication challen
57. e no other Interface parameters to configure click on OK Otherwise continue with the Interface configuration The Configuration Manager window appears Enabling IPv6 on This Interface If you enabled Internet Protocol version 6 IPv6 support when you initially configured this interface then the IPV6 parameter is enabled by default for PPP otherwise the default is Disable To stop IPv6 traffic from being routed over this interface set this parameter to Disable This parameter enables or disables the network control protocol for IPv6 It does not enable or disable IPv6 routing services for the interface However disabling the network control protocol for IPv6 stops IPv6 traffic from being routed over this interface Site Manager Procedure You do this System responds n From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set IPV6 Enable See page A 7 na E If you have no other Interface parameters to configure click on OK Otherwise continue with the Interface configuration The Configuration Manager window appears 3 10 303537 A Rev 00 Customizing PPP Specifying the Type of Connection PPP Mode The PPP Mode parameter indicates the type of connection on this interface single line multiline multilink or multilink monitor Your choice of options depends on the type of circuit
58. e the BCC as described in Chapter 3 to edit certain PPP line parameters You can also use Technician Interface set and commit commands to modify parameter values in the MIB object ID This process is equivalent to modifying parameters using Site Manager Caution The Technician Interface does not verify the validity of the parameter values that you enter Entering an invalid value can corrupt your configuration The following sections deal with the parameters in two groups those that pertain to configuring PPP on the interface and those that you use to configure PPP on individual lines on the interface These correspond to Site Manager s PPP Interfaces and PPP Line Lists windows respectively 303537 A Rev 00 A 1 Configuring PPP Services PPP Interface Parameter Descriptions Use the following guidelines to configure the PPP Interface parameters The order of presentation corresponds to the order of fields in the Site Manager PPP Interface Lists window and also approximately to the order of items in the wfPppCircuitEntry MIB Figure A 1 shows the Site Manager PPP Interface Lists window IP Enabla WI Enable SAS Enable DECmat IV Enalla AppleTalk Erusile IPS Crabe Figure A 1 Site Manager PPP Interface Lists Window Note In BayStream software environments only the IP Enable parameter is meaningful In the BayStream environment ignore all other PPP interface parameters A 2 303537 A Re
59. e the loopback test that the peer normally performs as part of its network integrity checking The loopback test ensures that a peer is talking to the network not to itself To disable loopback detection set the Magic Num Disable parameter to Disable After disabling this parameter you must explicitly set it to Enable to re enable loopback checking Using the BCC Navigate to the line prompt for the circuit and enter magic number value value is enable disable For example the following command disables loopback checking on the interface 3 1 line 3 1 magic number disable 3 38 303537 A Rev 00 Customizing PPP Using Site Manager To disable loopback checking for this line do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Magic Num Disable See page A 27 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Setting the Maximum Receive Unit MRU In Version 12 00 the default Maximum Receive Unit MRU parameter value for PPP is 1500 for compatibility with RFC 1661 If you have a network with both Version 11 02 or later and pre 11 02 Bay Networks routers
60. e you set for the PPP MRU Size parameter is the same for the central site and remote site routers 1 3 6 1 4 1 18 3 5 9 2 1 1 48 RFC1661 Compliance Protocols gt PPP gt Interfaces gt Lines Disable Enable Disable Enables RFC 1661 compliance for a PPP dial circuit Select Enable to make the PPP dial circuit RFC 1661 compliant Otherwise accept the default 1 3 6 1 4 1 18 3 5 9 2 1 1 49 A 28 303537 A Rev 00 Appendix B Default PPP Configuration The PPP default configuration depends on which protocols you enable for the interface Table B 1 and Table B 2 list the default PPP parameter settings Table B 1 PPP Interface Parameters Parameter Default IP Enable Enabling support for any of these protocols when OSI Enable you configure PPP on this interface automatically XNS Enable sets the protocol s corresponding Enable DECnet IV Enable AppleTalk Enable IPX Enable Bridge Enable VINES Enable parameter to Enable Otherwise the default is Disable CCP Enable If you enabled data compression on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable 303537 A Rev 00 Remote IP Address 0 0 0 0 IPX Network Number None IPX Remote Node Number None Remote AppleTalk Node None AppleTalk Routing Protocol RTMP Bridge Ethernet Enable Bridge FDDI Enable Bridge Token Ring Enable continued B 1 Co
61. ecret e CHAP Local Name e CHAP Periodic Timer e Asynchronous Control Character Map 303537 A Rev 00 3 15 Configuring PPP Services e Authentication Timer e Convergence Timer e Magic Num Disable Using the BCC To force LCP negotiation using the BCC navigate to the ppp prompt and enter state disable then enter state enable For example the following commands force LCP renegotiation on interface 3 1 by first disabling then reenabling PPP ppp 3 1 state disable ppp 3 1 state enable Using Site Manager Disable and then reenable the Enable LCP parameter You can change as many parameters as necessary before forcing the renegotiation After making all your changes to these parameters 1 Set the Enable LCP parameter to Disable and if necessary apply the changes 2 Reset the Enable LCP parameter to Enable and if necessary apply the changes To force link renegotiation on this PPP interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens continued 3 16 303537 A Rev 00 Customizing PPP Site Manager Procedure continued You do this System responds See page A 14 4 Set Enable LCP to Disable 5 Click on OK The Inter
62. eer router During the interface s authentication phase this interface must include the correct remote PAP ID in all password authenticate request messages it sends to the peer router or the peer router sends an authenticate NAK message and the link is not created If the remote peer does not have PAP enabled ignore this field If the remote peer has PAP enabled specify the remote PAP ID that identifies the remote peer To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable For dial services that use PAP you must configure the remote PAP ID through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 19 Remote PAP Password Protocols gt PPP gt Interfaces gt Lines None Any text string maximum 25 characters Specifies the PAP password assigned to the remote peer router During the interface s authentication phase this interface must include the correct remote PAP password in all password authenticate request messages it sends to the peer router Otherwise the peer router sends an authenticate NAK message and the link is not created If the remote peer has PAP enabled specify the remote PAP password that identifies the remote peer To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable For all dial services you must configure the remote PAP password
63. eloniecddeduetanediguecenelagliieedadiiinmcsuatees 3 7 Enabling VINES Support on This iaiersies PR E E Ne CTT EE E TT Creer tre 3 8 Enabling DECnet IV Support on This Interface 0 eee eeeeecceceeeesecceeeeneneeeeeeeneeeeeeeeneaees 3 9 vi 303537 A Rev 00 Enabling DPS on THS NEO C sosun E destoneceaaminveiaea 3 10 Specifying the Type of Connection PPP Mode MEET TAN PEENE E EEA T 3 11 Configuring Multilink FragmentatiOr cscccscrcsieecnccancasanei nese nesnneratiacentassduanesntiedenn 3 12 Conigurng Daa ERGY INIT sicrinisscednciasisednetnandebiiteundraducinetanddnhuededarebioneundsaniteumaiiatnebuddeis 3 13 Disabling Network Control Protocols scscacheteatinaieati inane aren GS 3 13 Customizing PPP LINES serrare ii a i ia OD Edling PPF Line ParamelotS siscccdsccnscrnsscanssncstescincncstetstannasncemsenncbaesasenshentamnncdentammaasanes 3 15 Enabina Link Control ona LNE erunsinnaninn iaae 3 17 Seting Tansmission Parameters ecrnscrenerierrsinmeiiii eein nnin O STIG the Restart TIMO sisi ccsineveinesdatevamcdtnnrebanatccontandedinetaatndaieeiadsecimeanndvatiebundsicn 3 18 Specifying the Interval Between Echo Request Packets 2 ceseeeeeeeeteees 3 19 Specifying the Acceptable Level of Echo Reply Packet Loss ceeeeeeee 3 19 Specifying the Maximum Number of Configure Request Packets 000 3 20 Specifying the Maximum Number of Terminate Request Packets 0cccccee 3 21 Specifying the Maximum Configur
64. enter echo requests seconds For example the following command sets the echo request interval to 5 seconds on circuit 3 1 line 3 1 echo requests 5 Using Site Manager To set the interval between transmissions of echo request packets on this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Seconds between Xmit of Echo Request See page A 15 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Specifying the Acceptable Level of Echo Reply Packet Loss The Echo Reply Acceptable Loss parameter specifies the maximum number of unacknowledged echo request packets that the router will transmit before declaring the point to point link down The default value is 3 packets 303537 A Rev 00 3 19 Configuring PPP Services Using the BCC Navigate to the line prompt for the circuit and enter echo replies lost seconds For example the following command sets the number of acceptable packets lost to 5 seconds on circuit 3 1 line 3 1 echo replies lost 5 Using Site Manager To set the interval between transmissions of echo request packets on this interface do the tasks in the
65. er Path Default Range Function Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Restart Timer in Seconds Protocols gt PPP gt Interfaces gt Lines 3 seconds 1 through 1000 Specifies the number of seconds that the restart timer waits before retransmitting data Accept the default value of 3 1 3 6 1 4 1 18 3 5 9 2 1 1 7 Seconds between Xmit of Echo Request Protocols gt PPP gt Interfaces gt Lines 0 seconds 0 through 100 Specifies the number of seconds that the router waits between the transmission of echo request packets A value of 0 means that this parameter is turned off Accept the default value of O or enter an integer value in the range 0 through 100 1 3 6 1 4 1 18 3 5 9 2 1 1 8 Echo Reply Acceptable Loss Protocols gt PPP gt Interfaces gt Lines 3 packets 1 through 100 Specifies the maximum number of unacknowledged echo reply packets that the router will transmit before declaring the point to point link down Accept the default value of 3 If you enter a different value you must set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 9 303537 A Rev 00 Configuring PPP Services Parameter Path Default Range Functio
66. es The Lines window opens 4 Set Max Terminate Requests See page A 16 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Specifying the Maximum Configuration Failure Count The Max Configuration Failure Count parameter specifies the maximum number of configure NAK packets that the router sends before sending a configure reject packet for those options that it does not agree with The default value is 10 packets Using the BCC Navigate to the line prompt for the interface and enter max configure fails seconds For example the following command sets the maximum number of configure NAK packets allowed to 5 on interface 3 1 line 3 1 max configure fails 5 3 22 303537 A Rev 00 Customizing PPP Using Site Manager To set the maximum number of configure NAK packets allowed on this interface do the tasks in the following table Site Manager Procedure You do this System responds From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Max Configuration Failure Count See page A 17 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Setting a Time Limi
67. es to define its end of the link 303537 A Rev 00 2 5 Configuring PPP Services For example a configure request packet may specify the link s maximum transmission unit MTU size and whether the sender wants to use Password Authentication Protocol PAP or Challenge Handshake Authentication Protocol CHAP The configure request packet contains the user configured values which the sender and its peer router may need to negotiate Each router receives a configure request packet from its peer Each router responds with one of three types of packets e Configure ACK If a router accepts the proposed LCP options it responds with a configure acknowledgment ACK packet When the routers on each side of the link send and receive configure ACK packets the LCP advances to an open state which means that the PPP interface can advance to the next phase e Configure reject If the configure request packet contains options that the peer router is not willing to negotiate the peer router sends back a configure reject packet specifying the nonnegotiable options From that point on configure request packets that the originating router sends should eliminate the unacceptable options e Configure NAK If the peer disagrees with some or all of the values of the proposed options in the configure request packet it responds with a configure negative acknowledgment NAK packet The configure NAK packet notes the values that the peer disag
68. etworks Technical Solutions Center for your area as listed in About This Guide Stopping the Flow of Traffic over a PPP Interface To stop traffic from routing over a PPP interface either disable the Network Control Protocol NCP for the upper level routing protocol or disable the upper level protocol itself For example if you disable the NCP for IP even though IP is still enabled on the interface it is no longer able to route traffic over the interface See Disabling Network Control Protocols in Chapter 3 for instructions on disabling NCP parameters Disabling the routing protocol running on top of the PPP interface also automatically disables the NCP for the routing protocol For example if you disable IP on an interface you disable the NCP for IP as well 303537 A Rev 00 2 25 Configuring PPP Services Where to Go Next Go to Chapter 1 for instructions on how to start PPP on your router Go to Chapter 3 for instructions on how to customize a PPP interface Go to Appendix A for a description of PPP parameters Go to Appendix B for a list of PPP parameter default values Go to Appendix C for a list of the PPP statistics that you can view Go to Appendix D for descriptions of the BCC show commands for PPP 2 26 303537 A Rev 00 Chapter 3 Customizing PPP This chapter describes how to customize and enable PPP services It assumes you have configured PPP on the interface using the default parameters
69. ev 00 3 3 Configuring PPP Services Setting Up Remote Addresses Using Site Manager you can define an address and node number depending on the requirements of the protocol you ve chosen that you want the remote peer to use That is you can define an e IP address e IPX network number and node number e AppleTalk node number depending on the protocol you enable After enabling the protocol specify the appropriate parameter s as described in the following sections Defining an IP Address for a Remote Peer Use Site Manager to specify the IP address that the remote peer router should use The interface you re configuring includes this address in its network control protocol NCP negotiations The default is 0 0 0 0 indicating that this is an unnumbered interface You can enter any valid IP address For information about unnumbered IP interfaces and on configuring an adjacent host entry see Configuring IP Services Beginning at the Configuration Manager window complete the tasks in the following table to specify an IP address for a remote peer Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set the Remote IP Address See page A 8 4 lf you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears
70. faces window opens 6 Choose Lines The Lines window opens See page A 14 7 Set Enable LCP to Enable 8 Click on OK The Interfaces window opens Enabling Link Control on a Line The link control protocol LCP is enabled by default on the interface Disabling the Enable LCP parameter generates a close event to the LCP and enabling this event generates an open event to the LCP A major use of this sequence is to force LCP renegotiation on the interface during dynamic reconfiguration Doing so means that any changes you have made to the line parameters are included in the negotiations To enable the link control protocol on this interface do the tasks in the following table Site Manager Procedure You do this System responds ak From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Enable LCP See page A 14 5 Click on OK The Interfaces window opens To disable LCP on this interface set Enable LCP parameter to Disable To reenable LCP set this parameter to Enable 303537 A Rev 00 3 17 Configuring PPP Services Setting Transmission Parameters You can specify the timing of transmissions and the threshold for considering the link to be down using the parameters described in the following sections
71. fects the network control protocol for IPX However disabling the network control protocol for IPX stops IPX traffic from being routed over this interface To stop IPX traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 17 303537 A Rev 00 A 5 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Bridge Enable Protocols gt PPP gt Interfaces If you enable the bridge when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for the bridge This parameter does not enable or disable bridging services for the interface it affects the network control protocol for the bridge However disabling the network control protocol for the bridge stops traffic from being bridged over this interface To stop traffic from being bridged over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 18 VINES Enable Protocols gt PPP gt Interfaces If you enable VINES support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for VINES This parame
72. g remote address 3 4 show ppp commands D 1 single line Normal specifying A 12 Site Manager starting 1 3 starting configuration tools 1 3 starting PPP 1 1 1 4 statistics C 1 calculating and viewing 3 42 multilink 3 42 support Bay Networks xx switched line dial up line PPP support 2 10 synchronous connection 2 23 synchronous line parameter BOFL 2 24 Promiscuous 2 24 Service 2 24 WAN Protocol 2 24 T T1 DSO 2 13 technical publications xix technical support xx terminate ACK packet 2 5 3 21 terminate request packet 2 5 maximum 3 21 text conventions xvi threshold 2 13 2 20 3 18 3 31 3 33 traffic congestion monitor 2 15 load balancing 2 15 transmission parameters 3 18 303537 A Rev 00 U unnumbered interface 3 4 using PPP multilink 2 13 V V 25bis modem 2 14 V 35 2 14 VINES Enable parameter A 6 B 1 VINES Network Control Protocol 2 4 VINES support enabling 3 8 Virtual Networking System VINES 2 4 Ww WAN 2 22 data paths 2 12 WAN Protocol synchronous line parameter 2 24 wfPppCircuitEntry MIB 3 42 A 2 wfPppCircuitMaxBuffers 3 42 wfPppCircuitMaxLinks 3 42 wfPppCircuitMlFragPerm 3 42 wfPppCircuitMlFragTriggerSize 3 42 wfPppLineEntry MIB A 13 wfPppMIStatsAvgTxListLen C 1 wfPppMIStatsBundleSpd C 1 wfPppMIStatsCalcPercent C 2 wfPppMIStatsCircuitID C 1 wfPppMIStatsEntry MIB 3 42 wfPppMIStatsExceededBufferMax C 2 wfPppMIStatsHomeSlot
73. ges at an interval in seconds that either peer on the link can specify The timer begins counting when an authentication phase has completed A new challenge does not begin until the amount of time you specify elapses Enabling PAP Fallback If the peer sends a configure NAK packet rejecting CHAP as the authentication protocol and if you have enabled PAP fallback the router offers PAP as the authentication protocol You must also have enabled PAP and provided a PAP password Setting the Enable PAP Fallback parameter to Enable causes a fallback to PAP if you have selected CHAP as the authentication protocol but the peer rejects CHAP The default value is Disable Set this parameter to Enable if you mix authentication types in the same pool 3 30 303537 A Rev 00 Customizing PPP Configuring PPP Interoperability with CLAM If you configure a CHAP local name on a Bay Networks router that connects to a Corporate LAN Access Module CLAM router that local name is used to negotiate the link If you do not configure a CHAP Local Name Site Manager uses BAYNETWORKS as a default CHAP local name Using the BCC The BCC does not allow you to configure these parameters Using Site Manager To specify a CHAP secret CHAP local name CHAP authentication challenge interval and enable PAP fallback for this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Pr
74. ging Routers with Site Manager or Using the Bay Command Console as appropriate Caution The BCC does not warn you before deleting objects Using the BCC 1 To delete PPP from a circuit navigate to the ppp prompt and type delete Deleting any object also deletes its subordinate objects For example the following command deletes PPP from the interface on slot 3 connector 1 ppp 3 1 delete 2 To delete an interface or other object navigate to the prompt for that object and type delete For example the following command deletes the synchronous interface on slot 3 connector 1 sync 3 1 delete 1 6 303537 A Rev 00 Starting PPP Services Using Site Manager To use Site Manager to delete PPP from a circuit do the steps in the following table Site Manager Procedure You do this System responds 1 In the Configuration Manager window click on the connector from which you want to delete PPP services The Edit Circuit window appears 2 Click on Done The Configuration Manager window opens 3 From the Protocols menu choose PPP A menu showing additional options opens 4 Click on Delete PPP Site Manager asks you to confirm your request for the deletion 5 Click on OK Site Manager deletes PPP services from the circuit When you delete PPP globally PPP no longer operates on the router Be aware that the BCC software does not ask you to confirm your de
75. gure a router you can prioritize the different types of traffic sent across a synchronous line This process is called protocol prioritization The ability to prioritize traffic is important because some types of operations require faster responses than other types For example PPP control messages must have precedence over other types of data Selecting PPP on a circuit automatically enables protocol prioritization without specifying any filters With the multiline feature you can configure both priorities and filters With the multilink feature you can configure priority queuing Priority queuing enables you to resequence outbound data packets into prioritized delivery queues called priority queues To use priority queuing over multilink first set the PPP Mode parameter to multilink and then configure the parameters in the Edit Protocol Priority Interface window If compression is configured the router prioritizes data before compressing it For more information about how to configure priority queuing and filters see Configuring Traffic Filters and Protocol Prioritization Differences Between Multiline and Multilink Both multiline and multilink use circuits consisting of one or more data paths between two peer routers Each has its special characteristics and advantages described in the following paragraphs and summarized in Table 2 3 303537 A Rev 00 2 17 Configuring PPP Services Table 2 3 Compa
76. he network number does not have to be the same on both sides of the link PPP negotiates the higher of the two numbers Note also that the negotiated IPX network number may be 0 on both sides of the link In this case IPX defines the link s network number 1 3 6 1 4 1 18 3 5 9 2 2 1 24 A 8 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID IPX Remote Node Number Protocols gt PPP gt Interfaces None Any valid IPX node number Specifies the IPX node number the peer router should use This interface includes this IPX remote node number in NCP negotiations If you want to specify an IPX node number for the peer router enter it here If this interface has been up and running you must also set the IPX Enable parameter to Disable apply the change and then reset the IPX Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 26 Remote AppleTalk Node Protocols gt PPP gt Interfaces None Any valid AppleTalk node number Specifies the AppleTalk node number the peer router should use This interface includes this AppleTalk node number in NCP negotiations If you want to specify an AppleTalk node number for the peer router enter it here If this interface has been up and running you must also set the AppleTalk Enable parameter to Disab
77. he percentage increases to an acceptable level 1 3 6 1 4 1 18 3 5 9 2 1 1 27 303537 A Rev 00 A 23 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID CHAP Secret Protocols gt PPP gt Interfaces gt Lines None Any text string maximum 20 characters Specifies the CHAP secret you assign to this interface The CHAP secret must be the same on both sides of the link Both routers on a link must have the same secret to correctly calculate responses to challenges either one of them may send to the other during the authentication process and the network layer negotiation phase If you have not enabled CHAP ignore this field If you have enabled CHAP specify the secret To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable For all dial services you must configure CHAP Secret through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 31 CHAP Local Name Protocols gt PPP gt Interfaces gt Lines None Any text string maximum 20 characters A local CHAP name informs the peers of each other s identity If you configure CHAP as an authentication protocol you must use CHAP Local Name for router identification on a bandwidth on demand dial on demand or dial backup line
78. he security of 303537 A Rev 00 iii its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files data or programs 4 Limitation of liability INNO 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
79. hole or in part The Software and user manuals embody Bay Networks and its licensors confidential and proprietary intellectual property Licensee 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 Ba
80. ick on OK Otherwise continue with the Lines configuration The Interfaces window opens 3 28 303537 A Rev 00 Customizing PPP Allowing PAP Rejection Some peers do not use PAP If you set the Allow PAP Reject parameter to Enable your router accepts the Reject message from such a peer and removes PAP from the LCP configure request The default value is Disable Using the BCC The BCC does not allow you to configure this parameter Using Site Manager To allow a remote peer to reject the use of PAP authentication for this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Choose Lines The Lines window opens Set Allow PAP Reject See page A 25 a Pr e n If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Customizing CHAP The Challenge Handshake Authentication Protocol imposes network security by requiring that the peers share a plain text secret You specify that secret as well as other CHAP parameters by configuring the parameters described in the next sections If you have not enabled CHAP ignore these parameters Note For dial services that use CHAP you must configure the CHAP secret and th
81. in fact send an LQR If three successive LQRs are not received the receiving peer disables the connection Accept the default Enable if you want the remote peer router to maintain an LQR timer for the interface Reset this parameter to Disable if you do not want the peer to maintain the LQR timer for the interface Specifying the Link Quality Reporting Period The LQR Reporting Period parameter specifies the maximum number of seconds between the transmission of LQR packets Enter a number representing the interval between the transmission of LQR packets The value of this parameter can be from 1 through 120 seconds The default value is 3 seconds Specifying the Inbound Link Quality The Inbound Link Quality parameter specifies the minimum acceptable success rate percentage of packets the peer router transmits and this router receives on this interface over the last 5 LQR reporting periods If the percentage drops below the inbound link quality you specify the router brings down the link until the percentage increases to an acceptable level The default value for this parameter is 90 percent You can specify values in the range 1 through 100 percent Specifying the Outbound Link Quality The Outbound Link Quality parameter specifies the minimum acceptable success rate percentage of packets the router transmits and the peer router receives on this interface If the percentage drops below the outbound link quality you specify the r
82. in the previous table describe how to add and modify these interfaces 303537 A Rev 00 Configuring PPP Services Starting PPP Services When you add a PPP circuit it is automatically enabled To let data flow over this interface you must also enable an upper layer routing protocol such as IP IPX or AppleTalk to run on top of PPP See the appropriate protocol specific guides for information on these upper layer protocols Note The BCC supports only IP as the upper layer protocol Using the BCC To enable IP routing on a given interface navigate to the IP prompt and enter state enable For example the following command enables IP routing on the interface with the IP address of 1 1 1 1 ip 1 1 1 1 state enable Using Site Manager To enable IP routing over this PPP interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set IP Enable to Enable See page A 3 4 Click on OK to accept the default values The Configuration Manager window for all other PPP parameters appears 303537 A Rev 00 Starting PPP Services Disabling and Reenabling PPP Services After changing certain PPP line parameters you must force renegotiation of the link To do this you first disable then reenable PPP on the link D
83. ingle computer or if applicable on a single authorized device identified by host ID for which it was originally acquired b to copy the Software 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 w
84. ional state of the loopback test that the peer normally performs as part of its network integrity checking 303537 A Rev 00 D 7 Configuring PPP Services MRU The maximum receive unit size Local Auth Prot The type of authentication protocol that this interface uses Remote Auth Prot The type of authentication protocol that the remote peer uses show ppp lqr The BCC show ppp Iqr command displays information about the configured PPP link quality values for the specified interface show ppp lqr config The show ppp Iqr config command displays information about the PPP link quality reporting configured for the specified interface The output contains the following information Circuit The circuit for which this command displays information Slot lt Module gt Conn Names the physical interface LQ Protocol The Link Quality Protocol used on this interface Remote Timer Specifies whether the remote peer runs the link quality report timer LQR Repeat Period The maximum number of seconds between the transmission of LQR packets Inbound Quality The minimum acceptable success rate percentage of packets that the peer router sent and this router received on this interface over the last five LQR reporting periods Outbound Quality The minimum acceptable success rate percentage of packets that this router sent on this interface and the peer router received D 8 303537 A Rev 00 Monitoring PPP Using the BCC show Comm
85. isabling the link also stops the flow of traffic from routing over the PPP interface even though the upper layer protocol may still be enabled Using the BCC In BCC configuration mode navigate to the PPP prompt for the interface and enter state disable Then reenable PPP on the interface by entering state enable For example the following commands force renegotiation of the link by disabling then reenabling PPP routing on the interface slot 3 circuit 1 ppp 3 1 state disable ppp 3 1 state enable Using Site Manager To force link renegotiation for this PPP interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Enable LCP to Disable See page A 14 5 Click on OK The Interfaces window opens 6 Set Enable LCP to Enable See page A 14 7 Click on OK The Interfaces window appears 303537 A Rev 00 1 5 Configuring PPP Services Deleting PPP Services You can delete PPP from a specific circuit by simply reconfiguring that circuit with a different configuration file that does not use PPP The way you delete PPP from all circuits on which it is currently configured depends on the tool you are using For detailed information refer to Configuring and Mana
86. kets until the delayed packet arrives and this can result in slower network performance If the number of packets needing to be resequenced is greater than the available allowed buffer space some packets could be considered late and discarded When you enable fragmentation you can specify the minimum size packet that you want PPP to consider fragmenting The default minimum size is 256 bytes Even with fragmentation enabled PPP generally avoids splitting packets unless network performance considerations warrant it When necessary PPP splits packets into fragments and then sends the fragments over the lines in the bundle reassembling them on the receiving peer into the proper sequence PPP discards all fragments of an incomplete reassembly The number of fragments is equal to or less than the number of lines available For bundles containing lines of different speeds PPP tries to send the smaller fragments over the slower lines This mechanism ensures a more even flow of data 2 16 303537 A Rev 00 PPP Concepts Packets sent over a multilink bundle have an outer header packet that contains a unique packet sequence number and allows for e Fragmentation of the original packets e Assignment of sequence numbers to each fragment e Transmission over a number of links in the bundle e Reassembly of the original sequence and packet size at the receiving peer Using Protocol Prioritization with Multiline and Multilink When you confi
87. le If the command syntax is show ip alerts routes you must enter either show ip alerts or show ip routes xvi 303537 A Rev 00 Preface brackets ellipsis points italic text screen text separator gt vertical line Indicate optional elements in syntax descriptions Do not type the brackets when entering the command Example If the command syntax is show ip interfaces alerts you can enter either show ip interfaces or show ip interfaces alerts Indicate that you repeat the last element of the command as needed Example If the command syntax is ethernet 2 1 lt parameter gt lt value gt you enter ethernet 2 1 and as many parameter value pairs as needed Indicates file and directory names new terms book titles and variables in command syntax descriptions Where a variable is two or more words the words are connected by an underscore Example If the command syntax is show at lt valid_route gt valid_route is one variable and you substitute one value for it Indicates system output for example prompts and system messages Example Set Bay Networks Trap Monitor Filters Shows menu paths Example Protocols gt IP identifies the IP option on the Protocols menu Separates choices for command keywords and arguments Enter only one of the choices Do not type the vertical line when entering the command Example If the command syntax is show ip
88. le apply the change and then reset the AppleTalk Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 36 303537 A Rev 00 A 9 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID AppleTalk Routing Protocol Protocols gt PPP gt Interfaces RTMP RTMP Routing Table Management Protocol Specifies the AppleTalk routing update protocol that this interface wants the peer router to use This interface specifies AppleTalk RTMP as the routing update protocol in NCP negotiations Accept the default RTMP 1 3 6 1 4 1 18 3 5 9 2 2 1 38 Bridge Ethernet Protocols gt PPP gt Interfaces Enable Enable Disable Specifies whether this PPP interface accepts bridged traffic that is Ethernet encapsulated then forwards it over the PPP network Set to Disable if you do not want the PPP interface to accept bridged Ethernet encapsulated frames If this interface has been up and running you must also set the Bridge Enable parameter to Disable apply the change and then reset the Bridge Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 40 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instru
89. le or disable RFC 1661 compliance on a dial circuit do the tasks in the following table Site Manager Path You do this System responds 1 In the Configuration Manager window choose Protocols The Protocols menu opens Choose PPP The PPP menu opens Choose Interfaces The PPP Interface List window opens Click on Lines The PPP Line List window opens eaii a a a Set the RFC1661 Compliance parameter See page A 28 Click on Done You return to the PPP Interface List window Click on Done You return to the Configuration Manager window 303537 A Rev 00 3 41 Configuring PPP Services Viewing Line Statistics for Multilink Circuits To view the statistics that PPP collects for multilink circuits use the Technician Interface software to access the PPP MIB For instructions on how to use this software refer to Using Technician Interface Software Appendix C lists the PPP multilink statistics and describes the data that they record The key statistics to check are the following e Inthe wfPppCircuitEntry MIB wfPppCircuitM FragPerm indicates that fragmentation is enabled wfPppCircuitMlFragTriggerSize indicates the smallest size packet that PPP may fragment wfPppCircuitMaxBuffers is the maximum allowable number of buffers for this circuit wfPppCircuitMaxLinks is the maximum number of links allowed in the multilink bundle for
90. letions Note Site Manager does not let you delete PPP globally from a router running dial on demand bandwidth on demand or dial backup Where to Go Next Go to Chapter 2 to learn more about PPP concepts and characteristics Go to Chapter 3 for instructions on how to customize a PPP interface Go to Appendix A for a description of PPP parameters Go to Appendix B for a list of PPP parameter default values Go to Appendix C for a list of the PPP statistics that you can view Go to Appendix D for descriptions of the BCC show commands for PPP 303537 A Rev 00 1 7 Chapter 2 PPP Concepts This chapter describes PPP concepts that can help you decide how to customize PPP parameters for your system This chapter also addresses special configuration features of the Bay Networks implementation of PPP services The following sections describe each of these items Topic Page PPP Overview 22 Routing over a PPP Link 2 4 Initializing a PPP Interface 20 Authenticating the PPP Link PAP and CHAP 2 8 Negotiating Network Layer Protocols 29 Datagram Encapsulation 2 10 PPP Dial Services Support 2 10 PPP Multiline eZ PPP Multilink 212 Differences Between Multiline and Multilink 2Ay Monitoring PPP Link Quality 2 20 PPP Data Compression 2 22 Synchronous Versus Asynchronous Connections 2 23 Configuring IP to Run over PPP Inte
91. ll it authenticates using the user configured protocol If the calling router rejects the authentication protocol CHAP the receiving router switches to PAP One way authentication requires that PAP and CHAP be enabled in the same line pool Set the PPP Local Authentication Protocol parameter to CHAP and enable PAP Fallback You must also configure certain options for the switched circuit itself See Configuring Dial Services for a description of how you must set up dial services to enable one way authentication Negotiating Network Layer Protocols PPP uses various network control protocols to determine the values of parameters during network layer negotiations the final phase of PPP initialization Like the LCP each network control protocol allows peer routers to negotiate various network options over the data link by transmitting configure request configure ACK configure NAK and configure reject packets Network options include which network addresses to use and which media types to bridge Once both peer routers agree upon network options the network control protocol reaches the open state The routers then begin transmitting user data packets for any upper layer protocols over the link 303537 A Rev 00 2 9 Configuring PPP Services Datagram Encapsulation Before transmitting data across the link PPP encapsulates data in a frame similar to a high level data link control HDLC frame Figure 2 3 PPP frame Flag Ad
92. n Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Max Configure Requests Protocols gt PPP gt Interfaces gt Lines 10 packets 1 through 100000 Specifies the maximum number of unacknowledged configure request packets that the router will transmit before assuming that the peer router on the other end of the link is unable to respond The link is then brought down Valid acknowledgments include configure ACK configure NAK or configure reject packets Accept the default value of 10 If you enter a different value you must set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 10 Max Terminate Requests Protocols gt PPP gt Interfaces gt Lines 2 packets 1 through 100 Specifies the maximum number of unacknowledged terminate request packets that the router transmits before assuming that the peer router on the other end of the link is unable to respond The valid acknowledgment is a terminate ACK packet Accept the default value of 2 If you enter a different value you must set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 11 303537 A Rev 00 PPP Parameters Parameter Path Default Range Function Instructions MIB Object I
93. nabled ignore the remote PAP parameters that follow During the authentication phase of link creation PPP uses the remote PAP ID and remote password to verify the local peer s right to communicate with the remote router During the authentication phase this interface must include the correct remote PAP ID and remote PAP password in all password authenticate request messages it sends to the local peer router otherwise the peer router sends an authenticate NAK message and the link is not created If the remote peer has PAP enabled specify the Remote PAP ID parameter which assigns a PAP identifier to the remote peer There is no default value The Remote PAP Password parameter specifies the password assigned to the remote peer router The password can consist of any text string up to 25 characters long There is no default value Using the BCC The BCC does not allow you to configure these parameters Using Site Manager To set a PAP identifier and PAP password for the remote peer of this interface do the tasks in the following table Site Manager Procedure You do this System responds k From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Choose Lines The Lines window opens Set Remote PAP ID See page A 20 neJ VN Set Remote PAP Password See page A 20 If you have no other PPP line parameters to configure cl
94. ndshake Authentication Protocol CHAP Imposes network security by requiring an authentication process Link Quality Protocol Enables or disables link quality monitoring and reporting Multilink Endpoint Discriminator Enables the PPP multilink protocol and specifies the identity of the sender of the option 303537 A Rev 00 Configuring PPP Services Table 2 2 Network Control Protocols and Options Protocol Negotiable Options IP Control Protocol IPCP IP Addresses for backward compatibility IP Address default Internet Packet Exchange Control Protocol IPXCP IPX Network Number IPX Node Number IPX Routing Protocol IPX Router Name IPX Configuration Complete AppleTalk Control Protocol ATCP AppleTalk Network Number AppleTalk Node Number AppleTalk Routing Protocol DECnet Phase IV Control None Protocol DNCP OSI Network Layer Control None Protocol OSINLCP Xerox Networking System None Control Protocol XNSCP VINES Network Control None Protocol VNCP Bridge Network Control Protocol BNCP MAC Type Selection Routing over a PPP Link You can enable the following protocols over PPP interfaces AppleTalk DECnet Phase IV Internet Packet Exchange IPX Internet Protocol IP Open Systems Interconnection OSI Virtual Networking System VINES Xerox Network System XNS 303537 A Rev 00 PPP Concepts
95. nection and resumes network control protocol packet traffic when the link quality improves 2 20 303537 A Rev 00 PPP Concepts For example in Figure 2 5 the acceptable outbound and inbound link quality configured on router A for the PPP interface is 100 percent After five LQR periods router A calculates the outbound and inbound link quality averages and determines that the inbound link quality average is below the 100 percent threshold in this case 90 percent As a result router A disables the link Router A Router B Synchronous line PPP0004A Packets Router A Packets Router B Outbound Link LQR Period Transmitted Received Quality Router A 1 100 100 100 2 100 100 100 3 100 100 100 4 100 100 100 5 100 100 100 Outbound average after 5 LQR periods 100 Packets Router A Packets Router B Inbound Link LQR Period Received Transmitted Quality Router A 1 90 100 90 2 90 100 90 3 90 100 90 4 90 100 90 5 90 100 90 Inbound average after 5 LQR periods 90 Figure 2 5 Link Quality Monitoring from Router A s Perspective 303537 A Rev 00 2 21 Configuring PPP Services In addition to LQR packets PPP periodically transmits echo request packets when echo request is enabled If the peer transmits a user specified number of echo
96. nfiguring PPP Services Table B 1 PPP Interface Parameters continued Parameter Default PPP Mode Normal for a nonmultilink circuit Multilink for a multilink circuit Multilink Fragmentation Permitted Fragmentation Trigger Size 256 Table B 2 PPP Line Parameters Parameter Default Enable LCP Enable Restart Timer in Seconds 3 Seconds between Xmit of 0 Echo Request Echo Reply Acceptable Loss 3 Max Configure Requests 10 Max Terminate Requests 2 Max Configuration Failure Count 10 Local Authentication Protocol CHAP for dial services None for all others Local PAP ID None Local PAP Password None Remote PAP ID None Remote PAP Password None Enable PAP Fallback Disable Link Quality Protocol None Peer Link Quality Report Timer Enable continued 303537 A Rev 00 Default PPP Configuration Table B 2 PPP Line Parameters continued Parameter Default LQR Reporting Period 3 Inbound Link Quality 90 Outbound Link Quality 90 CHAP Secret None CHAP Local Name None CHAP Periodic Timer None Allow PAP Reject Disable Async Control Character Map 655360 Ox000A000 Authentication Timer 10 Convergence Timer 300 Magic Num Disable Enable MRU Size bytes 1500 RFC1661 Compliance Disable 303537 A Rev 00 Appendix C PPP Statistics Table C 1 summarizes the PPP statistics you can vie
97. nrateinsantrsaniniaresetecamennccnnone 3 33 303537 A Rev 00 vii Specifying the Outbound Link Quality sisisi 3 33 Summary Example for BCC Link Monitoring Commands cceceeeee 3 35 Specifying the Asynchronous Modem Control Character Map cee 3 36 Disabling Lam pase C NECK ir nee 3 38 Setting the Maximum Receive Unit MRU e ccceeeesccceeseseeceeeeeeeeceeeeeneeseeseeeeeeeeeee OTOI Enabling RFC 1661 Compliance for Dial Circuits 2 2 0 0 eceeceseeeeeccceeeeeeeeeeeeeeeeeeeeeeeeees 3 41 Viewing Line Statistics for Multilink Circuits 0 cc ceeeeecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeneeneees 3 42 MOTIONS to GA NERE wessazsvnsceasnaetrecenaautsiocsidabebunsaaseceaunawraraG aaa eS Appendix A PPP Parameters PPP Interface Parameter Descriptions aisecccs atsrccesinacndstinttersesiiiuenetnniemencsicnmncsennmeed A 2 PPP Line Parameter Descriptions ciscisctiesnctposteiniiecncssaurebacdssinedanideduetesnsediireandaeatipoanciads A 13 Appendix B Default PPP Configuration Appendix C PPP Statistics Appendix D Monitoring PPP Using the BCC show Command STOW DI a E E A A E A E D 2 Show POP DAG PACkO haroi E D 2 show ppo CISA DIE uri EERE A a D 2 SNO PDO TD nenna D 3 SHOW DOD IMENO ES aa ene epee aA AE SEE EE S rece tr meer er D 3 BRM SITY aena eet oucaildeiled anes du dneiiedsaeneh oatinetoeeeeieessaneeden basadaanteaniasen D 4 Lg Seg 8 aa eC Emre tere rece Ter cree rarer recta e reer er
98. nts to use The IP address that the peer router wants the local router to use The IP address that this router wants the remote peer to use The IP address that the remote peer wants to use The BCC show ppp ipx command displays information about the PPP IPX configuration show ppp ipx config The show ppp ipx config command displays summary information about the PPP IPX configuration The output contains the following information Circuit State Network Number Remote Node Routing Protocol The circuit for which this command displays information The operational state of the interface The configured IPX network number The node number that the local router tells the remote peer to use if the peer sends a node number of 0 The IPX routing protocol on the interface 303537 A Rev 00 Monitoring PPP Using the BCC show Command show ppp ipx name local The show ppp ipx name local command displays information about the PPP IPX local router The output contains the following information Circuit name Names the physical interface State The operational state of the interface Local Router Name The name of the local router show ppp ipx name remote The show ppp ipx name remote command displays information about the PPP IPX remote peer router The output contains the following information Circuit name Names the physical interface State The operational state of the interface Remote Router Name The n
99. of the termination of this license 8 Export and Re export Licensee agrees not to export directly or indirectly the Software or related technical 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 ACKN
100. ols gt PPP gt Interfaces Multilink for a dial on demand or bandwidth on demand circuit Normal for a nonmultilink circuit Normal for a nonmultilink circuit Multilink Monitor for a dial on demand or bandwidth on demand circuit Normal Multilink for all other circuit types Specifies the type of multiline or multilink connection on this interface The set of available options depends on the type of circuit you re configuring Select one of the following values Normal to configure a nonmultilink circuit Multilink to enable the multilink feature Monitor to designate the local router as the multilink monitor 1 3 6 1 4 1 18 3 5 9 2 2 1 50 Multilink Fragmentation Protocols gt PPP gt Interfaces Permitted Permitted Prohibited This parameter is active only for multilink Allows packet fragmentation on multilink circuits when needed Accept the default Permitted if you want to allow multilink packet fragmentation Otherwise specify Prohibited 1 3 6 1 4 1 18 3 5 9 2 2 1 51 303537 A Rev 00 PPP Parameters Parameter Path Default Range Function Instructions MIB Object ID Fragmentation Trigger Size Protocols gt PPP gt Interfaces 256 bytes 64 through the maximum transmission unit for the circuit This parameter is active only for multilink Specifies the minimum size of a packet that multilink will fragment When packet fragmentation over multilink is permitted accept the default
101. om the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Max Configure Requests See page A 16 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Specifying the Maximum Number of Terminate Request Packets PPP uses the Maximum Terminate Requests parameter to specify the maximum number of unacknowledged terminate request packets that the router transmits before assuming that the peer router on the other end of the link is unable to respond The valid acknowledgment is a terminate ACK packet The default value is 2 packets Using the BCC Navigate to the line prompt for the interface and enter max terminate requests seconds For example the following command sets the maximum number of unacknowledged terminate request packets allowed to 5 on interface 3 1 line 3 1 max terminate requests 5 303537 A Rev 00 3 21 Configuring PPP Services Using Site Manager To set the maximum number of unacknowledged terminate request packets allowed on this interface do the tasks in the following table Site Manager Procedure You do this System responds From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lin
102. onous control character map for both sending and receiving When sending data PPP inserts the escape character 0x7D in front of the control character and does a logical XOR operation combining the control character with the value 0x20 When the receiving peer encounters these characters in the data stream it strips off the escape character and converts the next character to the original asynchronous modem control character The async control character map consists of 32 bits Each bit corresponds to one control character 0x00 the right end of the map through Ox1F the left end of the map that is 0 through 31 decimal The actual map is a value used essentially as a mask For example the default map value 0xA0000 655360 decimal allows the escaping of the control characters 0x11 XON and 0x13 XOFF if they occur in the data stream Almost all modems need only this default value The characters 0x7D and Ox7E are special characters that are always escaped in asynchronous data transmission Chapter 3 describes how to build a customized async control character map PPP Line Parameters When you enable PPP on a circuit the default PPP automatically sets the line parameters shown in Table 2 4 These parameters are the same for both synchronous and asynchronous connections Table 2 4 PPP Line Parameter Values Parameter Value BOFL Disable Promiscuous Enable Service Transparent WAN Protocol PPP Depending
103. ool with the same MRU value For pre 11 02 routers change the MRU setting to 1500 Change the MRU value in the Sync Driver MTU attribute the 1510 value becomes 1500 after subtracting CRC and PPP headers of the pre 11 02 router to 1510 CLAM routers running Release 3 52R use the default setting of 1500 If you upgrade the central site router to 11 02 or later and the default MRU value of 1500 is taken on one pool to satisfy 3 522R CLAM routers or 11 02 or later routers you can choose a different default value for example 1590 for a different pool that the 11 02 or pre 3 522R CLAM router dials into Using the BCC The BCC does not allow you to configure this parameter Using Site Manager To set the MRU for this line do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens continued 3 40 303537 A Rev 00 Customizing PPP Site Manager Procedure continued You do this System responds 4 Set MRU Size bytes See page A 28 5 If you have no other PPP line parameters to configure click on OK Otherwise continue with the Lines configuration The Interfaces window opens Enabling RFC 1661 Compliance for Dial Circuits To enab
104. oose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set the IPX Network Number See page A 8 4 Set the IPX Remote Node Number See page A 9 5 If you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears continue with the Interface configuration 303537 A Rev 00 3 5 Configuring PPP Services Configuring AppleTalk To enable AppleTalk on the interface use Site Manager to configure an AppleTalk node number and the AppleTalk routing update protocol for the remote peer to use Defining a Remote AppleTalk Node Number for a Remote Peer If you want to specify an AppleTalk node number that the peer router should use enter it here There is no default value you can enter any valid AppleTalk node number This interface includes this AppleTalk node number in its network control protocol negotiations Defining the AppleTalk Routing Protocol You can specify the AppleTalk routing update protocol for the peer router to use Since the only option for the AppleTalk Routing Protocol is the Routing Table Management Protocol RTMP you can simply accept the default value This interface specifies AppleTalk RTMP as the routing update protocol in NCP negotiations To specify an AppleTalk Node Number and the AppleTalk Routing Protocol do the tasks in the following table Site Manager Procedure Yo
105. or specify the minimum packet size that PPP will consider fragmenting 1 3 6 1 4 1 18 3 5 9 2 2 1 57 PPP Line Parameter Descriptions Use the following guidelines to configure the PPP Lines parameters The order of presentation corresponds to the order of fields in the PPP Line Lists window and also approximately to the order of items in the wfPppLineEntry MIB Figure A 2 shows the Site Manager PPP Line Lists window In the path names that follow bold text indicates that in Site Manager you invoke the PPP Line Lists window by clicking on the Lines button on the PPP Interface Lists window 303537 A Rev 00 Configuring PPP Services Enai la LCF Restart Timer in Seconds beoi beteen elt of Echo Roquest Echo Raply Acceptabla Les ex Configure Regma Hw Terainste Rrgests Figure A 2 Site Manager PPP Line Lists Window Parameter Enable LCP Path Protocols gt PPP gt Interfaces gt Lines Default Enable Options Enable Disable Function Enables or disables the Link Control Protocol LCP on the PPP interface Disabling this parameter generates a close event to LCP Similarly enabling this parameter generates an open event to LCP Disabling then re enabling this parameter forces the interface to renegotiate the link Instructions To disable LCP on this interface set this parameter to Disable MIB Object ID 1 3 6 1 4 1 18 3 5 9 2 1 1 2 A 14 303537 A Rev 00 PPP Parameters Paramet
106. or Corporate LAN Access Module CLAM routers configured with dial on demand standby or dial backup circuits make sure that the value you set for the PPP MRU parameter is the same for the central site router and the remote site routers To accomplish this task consider one of the following options e Upgrade all routers to Version 11 02 or later simultaneously We strongly recommend this option e Upgrade the central site router to Version 11 02 or later leaving the remote site routers untouched Then change the default MRU value on the central site router to 1590 bytes 303537 A Rev 00 3 39 Configuring PPP Services As you upgrade each remote site router software to Version 11 02 or later set its MRU value to 1590 unless you can segregate the 11 02 or later remote sites into their own demand pool You can do this if some of the remote site routers are CLAM routers provided they are running a CLAM release prior to 3 522R CLAM routers running software earlier than 3 522R let you set the default MRU value to 1590 If some remote site CLAM routers are running release 3 522R then you cannot set the MRU value to 1590 In this case isolate those CLAM routers in their own demand pool on the 11 02 or later router and set the MRU value of that pool to 1500 Upgrade the central site router to Version 11 02 or later and set the default MRU value to 1500 Then reconfigure all remote site routers dialing into that demand p
107. orting Period parameter 3 33 A 22 B 3 LQR See link quality report LTSS Name encryption parameter 3 13 LTSS Value encryption parameter 3 13 Magic Num Disable parameter 3 38 A 27 A 28 B 3 map async control character 2 24 3 36 Max Configuration Failure Count parameter A 17 B 2 Index 4 Max Configure Requests parameter A 16 B 2 Max Terminate Requests parameter A 16 B 2 MCT1 MCE1 2 14 media multilink 2 14 MIB objects C 1 Mode Protection Key encryption parameter 3 13 modem control character 2 23 map 2 24 3 36 modem asynchronous 2 23 A 26 modifying interfaces 1 3 monitor link quality 3 31 monitoring congestion 2 13 2 15 link quality 2 20 PPP links 2 20 MRU compatibility with CLAM and earlier versions 3 39 MRU Size parameter A 28 B 3 multiline 2 12 comparison with multilink 2 17 protocol prioritization 2 17 specifying A 12 multilink 2 12 circuit figure 2 14 comparison with multiline 2 17 configuring 2 15 2 16 endpoint discriminator 2 3 media 2 14 packet fragmentation 2 16 protocol prioritization 2 17 resequencing packets 2 16 specifying A 12 statistics 3 42 using 2 13 Multilink Fragmentation parameter A 12 B 2 N NCP See network control protocol negotiated IPX network number 3 5 negotiating network layer protocols 2 9 NETarchitect starting 1 3 303537 A Rev 00 network connection negotiating 2 9 PPP 2 2 network control protocol 2 2 disabling 2 25
108. ot allow you to configure this parameter Using Site Manager To set a time limit for this interface do the tasks in the following table Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Authentication Timer See page A 27 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Customizing PAP When PAP is the authentication protocol you must also specify a local PAP ID a local PAP password and a remote PAP ID and remote PAP password for the peer During the authentication phase of link creation PPP uses these parameters to verify the peer s right to communicate with the local router Note For dial services that use PAP you must configure the local PAP ID the local PAP password the remote PAP ID and the remote PAP password through the Dial menu See Configuring Dial Services for details 3 26 303537 A Rev 00 Customizing PPP Specifying Local PAP Parameters If you did not enable PAP on the local peer ignore the local PAP parameters that follow If you set the local authentication protocol to PAPAUTH specify a unique local PAP identifier and local PAP password for this interface During the interface
109. otocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Choose Lines The Lines window opens Set CHAP Secret See page A 24 Set CHAP Local Name See page A 24 a aTATe N Set CHAP Periodic Timer See page A 25 7 Set Enable PAP Fallback See page A 21 8 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise continue with the Lines configuration Setting Up Link Quality Monitoring When you turn on the link quality monitoring and reporting function for an interface PPP monitors the quality of the point to point link as a percentage of sent packets received on each end of the link When the average quality falls below the threshold you specify PPP brings down the link The driver software automatically brings the link back up and renegotiates the connection 303537 A Rev 00 3 31 Configuring PPP Services By default link quality monitoring is disabled If you do not want to enable this feature accept the default value Note PPP supports link quality monitoring over standard synchronous interfaces only PPP does not support link quality monitoring over asynchronous or high speed serial interfaces HSSI BayStream software however does support both link quality monitoring and link quality reporting over HSSI interfaces If two routers are configured for differen
110. ou have enabled dial backup the router automatically establishes a backup line and data transmission continues 303537 A Rev 00 2 11 Configuring PPP Services PPP Multiline Bay Networks PPP services include support for the multiline feature which lets you configure a single circuit that consists of one or more WAN data paths A data path is a logical point to point channel that is a permanent leased line Multiline provides both increased fault tolerance and greater bandwidth between two sites See the section Differences Between Multiline and Multilink on page 2 17 for a comparison of these features For more information about the Bay Networks multiline feature see Configuring WAN Line Services or Configuring Ethernet FDDI and Token Ring Services PPP Multilink Note BayStream software does not support the PPP multilink feature If you use BayStream software ignore this and the following sections relating to multilink The multilink feature of PPP provides capabilities beyond those of multiline circuits The major characteristics of multilink include the ability to e Use lines that have different speeds proportionally distributing traffic over those lines e Balance traffic load and maintain packet sequence e Use switched lines such as ISDN B channels as well as leased lines e Monitor traffic volume Configurations with bandwidth on demand which can activate additional lines in response to increa
111. outer brings down the link until the percentage increases to an acceptable level The default value for this parameter is 90 percent You can specify values in the range 1 through 100 percent 303537 A Rev 00 3 33 Configuring PPP Services Using the BCC Note A summary example showing the use of all the BCC link monitoring commands follows these syntax descriptions 1 Enable link quality monitoring Enabling link quality monitoring on the interface allows all the other link quality monitoring parameters to function Navigate to the IP prompt and enter the following command link quality protocol value value is none LINKQR 2 Enable the peer LQR timer To specify whether the remote peer should maintain the LQR timer for the interface enter the following command after setting the link quality protocol to LINKQR peer Iqr timer value value is enable disable 3 Set the LQR reporting period To specify the LQR reporting period enter the following command Iqr reporting period seconds seconds is an integer in the range 1 through 120 4 Set the inbound link quality To specify the inbound link quality enter the following command after setting the link quality protocol to LINKQR Iqr percentage received percent percent is an integer in the range 0 through 100 3 34 303537 A Rev 00 Customizing PPP 5 Set the outbound link quality To specify the outbound link quality
112. packets D 2 show ppp disabled D 2 show ppp enabled D 3 show ppp interfaces D 3 show ppp ip D 4 show ppp ipx D 4 show ppp line D 6 show ppp lar D 8 303537 A Rev 00 D 1 Configuring PPP Services show ppp alerts The BCC show ppp alerts command displays information about PPP exception conditions The output contains the following information Circuit The circuit for which this command displays information Slot lt Module gt Conn Names the physical interface Line State The operational state of this line Protocol The currently active protocol on this circuit State Indicates whether PPP is enabled or disabled on this circuit show ppp bad packets The BCC show ppp bad packets command displays information about invalid packets received on the specified circuit The output contains the following information Circuit Name The circuit for which this command displays information Bad Packets Number of invalid packets received Last Bad Packet Information about the last invalid packet received show ppp disabled The BCC show ppp disabled command displays information about the protocols disabled on the specified PPP circuit The output contains the following information Circuit The circuit for which this command displays information Line The line within the circuit to which this information applies Protocol The protocol disabled on this line State The operational state of this line 303537 A
113. products derived from such portions of the software without specific prior written permission SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED 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 ji 303537 A Rev 00 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 s
114. quencing buffer pool wfPppMIStatsReSeqBufferMax The maximum number of multilink packets stored in the ReSequencing buffer pool wfPppMIStatsExceededBufferMax The number of times a buffer needed to be stored by the Multilink Receive logic when the count of buffers stored wfPppMIStatsReSeqBufferMax was equal to the maximum allowable for this circuit wfPppCircuitMaxBuffers wfPppMIStatsLinkldleEvents The number of times the Multilink Receive logic detected a stored buffer received on a line what has been declared idle wfPppMIStatsCalcPercent Enable disable calculating the percentage of multilink octets received on the line wfPppMIStatsReassmBufferCnt The number of multilink packets currently stored in the Reassembling buffer pools wfPppMIStatsReassmBufferMax The maximum number of multilink packets stored in the Reassembling buffer pools wfPppMIStatsNumPktsFragmented The number of multilink packets that were fragmented 303537 A Rev 00 Appendix D Monitoring PPP Using the BCC show Command This appendix describes how to use the BCC show command to obtain PPP statistical data from the management information base MIB The type and amount of data displayed depends on the specific PPP settings you want to view This appendix includes descriptions of the following show commands Command Page show ppp alerts D 2 show ppp bad
115. r dial services PPP with either CHAP or PAP implements a router identification mechanism that dial services require Bay Networks provides three types of dial services dial on demand bandwidth on demand and dial backup For information on how to configure dial on demand bandwidth on demand and dial backup lines see Configuring Dial Services Dial on Demand Dial on demand enables you to establish a circuit on demand as opposed to having a leased line connection which is always available By using a circuit on a demand basis you can have a network connection only when you need it and significantly reduce your line costs Bandwidth on Demand Bandwidth on demand uses secondary dial up lines to augment a primary leased line or lines or an initial dial on demand line when the primary line experiences congestion Congestion occurs when traffic volume exceeds the configured congestion threshold Bandwidth on demand brings up these secondary lines one at a time as needed up to a maximum of 30 lines including the primary lines Up to 30 lines can be combined into a multilink bundle depending upon platform constraints total bundle speed variance in member links speeds and traffic characteristics When congestion abates the secondary lines become inactive Please consult the Bay Networks Technical Solutions Center in your area for design guidelines Dial Backup If a primary PPP frame relay or standard line fails and y
116. r example disabling IP on an interface disables the NCP for IP as well Using the BCC Navigate to the IP prompt and enter state disable For example the following command disables IP routing on the interface with the IP address of 1 1 1 1 ip 1 1 1 1 state disable 303537 A Rev 00 3 13 Configuring PPP Services Using Site Manager To stop traffic from routing over this PPP interface do the tasks in the following table Site Manager Procedure You do this System responds From the Protocols menu choose PPP The Interfaces menu appears Choose Interfaces The Interfaces window opens Set IP Enable to Disable See page A 3 AJOJN If you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears continue with the Interface configuration Customizing PPP Lines The PPP line parameters specify the characteristics of individual lines within the interface You can edit the default PPP line parameter values to fit your particular system requirements Appendix Appendix B Default PPP Configuration lists the default PPP line parameter values The following sections describe how to customize those parameters You can configure or modify all the PPP line parameters using Site Manager but only a subset using the BCC Table 3 2 lists the PPP line parameters that you can modify using BCC commands
117. r to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 13 303537 A Rev 00 A 3 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID XNS Enable Protocols gt PPP gt Interfaces If you enable XNS support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for XNS This parameter does not enable or disable XNS routing services for the interface it affects the network control protocol for XNS However disabling the network control protocol for XNS stops XNS traffic from being routed over this interface To stop XNS traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 14 DECnet IV Enable Protocols gt PPP gt Interfaces If you enable DECnet IV support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for DECnet IV This parameter does not enable or disable DECnet IV routing services for the interface it affects the network control protocol for DECnet IV However disabling the network control protocol for DECnet IV stops DECnet IV traffic from being route
118. rees with and it includes the corresponding values that the peer would like to see in subsequent configure request packets LCP negotiations between peers continue until either the routers converge reach an agreement regarding the configure request and PPP advances to the next phase until the peer router transmits a user specified number of configure NAK packets before sending a configure reject packet or until the configurable convergence timer expires When the originating router receives a configure reject packet the originating router removes the offending options The routers should then converge 2 6 303537 A Rev 00 PPP Concepts Figure 2 2 demonstrates how a PPP interface initializes Router A Router B 1 PPP interface comes alive on network begin LCP negotiations Send Configure Request gt 4 Send Configure Request 4 Send Configure ACK Send Configure ACK p gt 2 LCP opened begin authentication phase PAP or CHAP PAP CHAP Send Authenticate Request gt Challenge gt lt Send Authenticate ACK lt _ Response Response Match Shows Router A initating authentication Router B can also initiate authentication 3 Authentication complete begin NCP negotiations Send Configure Request gt ___ Send Configure Request __ Send Configure ACK Send Configure ACK
119. release notes free directly from the Internet Go to support baynetworks com library pubs Find the Bay Networks product for which you need documentation Then locate the specific category and model or version for your hardware or software product Using Adobe Acrobat Reader you can open the manuals and release notes search for the sections you need and print them on most standard printers You can download Acrobat Reader free from the Adobe Systems Web site www adobe com You can purchase Bay Networks documentation sets CDs and selected technical publications through the Bay Networks Collateral Catalog The catalog is located on the World Wide Web at support baynetworks com catalog html and is divided into sections arranged alphabetically e The CD ROMs section lists available CDs e The Guides Books section lists books on technical topics e The Technical Manuals section lists available printed documentation sets Make a note of the part numbers and prices of the items that you want to order Use the Marketing Collateral Catalog description link to place an order and to print the order form 303537 A Rev 00 xix Configuring PPP Services How to Get Help For product assistance support contracts or information about educational services go to the following URL http www baynetworks com corporate contacts Or telephone the Bay Networks Technical Solutions Center at 800 2LANWAN XX 30353
120. requests before receiving an echo reply from its peer router the router disables the link and restarts Note Echo requests are disabled by default and are in no way related to link quality reporting PPP Data Compression The Bay Networks data compression feature lets you reduce line costs and improve response times over wide area networks WANs running PPP Data compression eliminates redundancies in data streams When you use compression on your network bandwidth efficiency improves and you can transmit more data over a given amount of network bandwidth Bay Networks data compression services for PPP include e Software based compression WCP and Hi fn LZS for all platforms and all serial interfaces e Hardware based data compression for PPP networks that use the octal synchronous link module for the Backbone Node BN using only FRE 2 processors and the FRE 2 060E processor module with the advanced compression coprocessor daughterboard e Hardware based data compression for PPP networks that use the compression net module for the Access Stack Node ASN You can use data compression on all PPP circuits including multiline multilink bandwidth on demand dial on demand dial backup lines and on ISDN BRI and PRI modules You can use compression separately on each member of a multilink bundle When you use compression on a bandwidth on demand dial on demand or dial backup circuit the data compression feature
121. rfaces 2 25 Detecting Loopback Conditions 2 25 PPP Interoperability 2 25 Stopping the Flow of Traffic over a PPP Interface 2 25 Where to Go Next 2 26 303537 A Rev 00 2 1 Configuring PPP Services PPP Overview Point to Point Protocol PPP is a standard method of routing or bridging datagrams between peer routers or other devices over serial point to point links Figure 2 1 LAN LAN Router Router Synchronous line PPPOOOLA Figure 2 1 Point to Point Network Connection PPP serves three major functions e Data link layer connection and management e Network layer connection and management e Datagram encapsulation PPP uses a suite of data link and network control protocols to connect peer routers PPP also allows peers to negotiate and determine data link and network layer options such as those listed in Table 2 1 and Table 2 2 When negotiations complete successfully PPP encapsulates the data and transmits it over the link 2 2 303537 A Rev 00 PPP Concepts Table 2 1 Sample Data Link Control Protocol Options Option Function Maximum Receive Unit Specifies the maximum receive unit MRU size for the line Maximum Transmission Unit Specifies the maximum transmission unit MTU size for the line Authentication Protocol e Password Authentication Protocol PAP e Challenge Ha
122. ring Multiline and Multilink Feature Multiline Multilink Advantages e Fault tolerance e Fault tolerance e Bandwidth availability e Bandwidth availability e Uses all lines in the bundle for greatest speed and efficiency Number of e Upto 31 concurrent data Up to 30 lines obundle depending physical lines paths group on platform constraints total circuit e Data paths can either be bundle speed variance in physical or logical lines member links speeds and traffic multiple independent data characteristics Please consult the paths running over a single Bay Networks Technical Solutions physical interface Center in your area for design guidelines Grouped bundled The data paths that together Lines in a bundle can have data paths make up a multiline circuit must different speeds share the same speed MTU and encapsulation method Line types Can use leased lines Can use leased as well as switched lines Protocol e Automatically enabled e Automatically enabled prioritization e User can specify protocol e User can specify protocol prioritization and traffic filters prioritization Used with these e Bay Networks standard PPP only data link types synchronous e Frame relay direct mode e PPP Media supported Synchronous Synchronous e T1 E1 e T1 E1 e MCE1 MCT1 e MCE1 MCT1 e HSSI ISDN B channel drivers e Raise DTR V 25bis modems continued 2 18 303537 A Rev 00 PPP Concepts Table 2 3 Comparing Mul
123. rree Terre Teer reer errr tren cree rrr D 4 SOPOP EO L 3 Be mCen net Renn E teen trenton Tene Neer RRR nineer A D 4 show DOD IDX MANTIS HOGAN cciana E D 5 Show PPP PX gt tea 1 111 0 sorrenca n iia D 5 show POO IER TEIOUAIEO rnia ea D 6 OND O NS a TOTO D 6 Show Dpp ime SIN reia a aa E D 6 skow Dop Ine RAINY sccccstasnsrcdecemmrcdacemmnreczvansanndcctoimnnsdd EEES D 7 SKOR PON IDE PRIUS heana EEA D 7 viii 303537 A Rev 00 STO Ie TE exci Giutacsa canimeraat A D 8 Show ICE OTN airosa inaa a iaa eo SORTO O S ara R D 9 Index 303537 A Rev 00 ix Figures Figure 2 1 Point to Point Network Connection ccccccceeseeeeeeeeeeeaeeeeeeeeeeeaaeeeeneees 2 2 Figure 2 2 Initializing the PPP Interface cciscssccsccsseasscossiaseecacsiagatGisesncaaepeciaiaanntncsdaaaete 2 7 Figure 2 3 PPP Encapsulated Frame sisccccsiscecrniethecsatmniscccomivecneimmivcetarannewaaeaiae 2 10 Figure a4 Multilink CAG UIT speisen a A anette 2 14 Figure 2 5 Link Quality Monitoring from Router A s Perspective PEP 2 21 Figure A 1 Site Manager PPP Interface Lists Window c cesseeeeeeeeestteeeeeeees A 2 Figure A 2 Site Manager PPP Line Lists Window ccccecceeeceeeteeeeeeeeeeeeeeees A 14 303537 A Rev 00 xi Table 1 1 Table 2 1 Table 2 2 Table 2 3 Table 2 4 Table 3 1 Table 3 2 Table B 1 Table B 2 Table C 1 303537 A Rev 00 Tables PPP Comigurable PuUnco nS oiaren nn EN 1 2 Sample Data Link
124. sed traffic can find these features particularly useful 303537 A Rev 00 PPP Concepts Multilink is available on all platforms that have more than one WAN line including the following platforms e BLN BCN e AN e ASN Using PPP Multilink The routers at each end of a PPP link that is a logical communications line are called peers A link is an individual communication channel between two peers Typical links include one ISDN B channel an aggregation of T1 DSOs one dial up modem connection and one leased T1 line Links can be either leased or switched lines All links must have the same data link encapsulation PPP and all links must have the same maximum transmission unit MTU On non ISDN lines you must configure the clock speed When you enable multilink you can configure a set of links between two peers into a single bundle which can consist of up to 30 links possibly of different bandwidths The practical maximum number of lines depends on factors such as the amount of memory the number of lines configured the speed of those lines the packet sizes and the traffic patterns With multilink configured leased lines in a bundle can be on different router slots Multilink distributes traffic over each logical line in a bundle in an amount roughly proportional to the effective bandwidth of the link With multilink and bandwidth on demand enabled you can configure one side of the link as the conges
125. st or when they arrive after packets with later sequence numbers To minimize this situation multilink buffers out of sequence packets in case the preceding sequence numbered packets arrive shortly after the later numbered packets 303537 A Rev 00 2 15 Configuring PPP Services Using Multilink Fragmentation By default PPP multilink allows packet fragmentation With fragmentation enabled PPP splits large datagrams into smaller packets and sends these packets across links in a multilink bundle Enabling fragmentation means that PPP can split packets when necessary for better performance PPP does not arbitrarily split all the packets it transmits Fragmentation improves the distribution of data across multilink lines and uses buffer resources more efficiently thereby improving the flow of data over multilink circuits By default multilink fragmentation is enabled Bay Networks routers comply with RFC 1717 which defines PPP multilink Without multilink fragmentation when PPP sends packets over a multilink bundle it sends one packet over each line in sequence in a round robin fashion To optimize performance PPP does attempt to send fewer packets on the slower lines However some packets with higher sequence numbers sent over faster lines could be received earlier than packets with lower sequence numbers sent over slower lines Since PPP maintains the sequence of received packets the receiving peer must store the out of sequence pac
126. t for Convergence Convergence occurs when the peers have negotiated all the parameters needed to establish a dial services connection You can limit the amount of time that PPP attempts to negotiate a switched PPP interface by setting the Convergence Timer parameter This parameter applies only to a switched PPP interface The convergence timer specifies the maximum number of seconds allowed for the completed negotiations It limits the LCP negotiations and requires at least one NCP to negotiate within the configured amount of time The default value is 300 seconds If the timer expires before the negotiation completes the connection is dropped The convergence timer allots the configured number of seconds for the LCP to negotiate and allots the same period for one NCP to complete negotiations Using the BCC The BCC does not allow you to configure this parameter Using Site Manager To set the maximum time allowable for convergence for this interface do the tasks in the following table 303537 A Rev 00 3 23 Configuring PPP Services Site Manager Procedure You do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Choose Lines The Lines window opens 4 Set Convergence Timer See page A 27 5 If you have no other PPP line parameters The Interfaces window opens to configure click on OK Otherwise con
127. t link quality reporting periods they negotiate to the lower value so that the period is the same on both sides of the link Enabling Link Quality Monitoring and Reporting To turn on link quality monitoring and reporting for the interface set the Link Quality Protocol parameter to LINKQR When you enable link quality monitoring and reporting through the link quality protocol you are turning on monitoring only for the local router The router on which you enable it is responsible for monitoring link quality for the connection By default link quality monitoring and reporting is disabled If you do not enable link quality monitoring and reporting ignore the rest of the link quality parameters Establishing the Timing of Link Quality Reports You can specify which peer is responsible for running the link quality report timer and set the maximum interval between the transmission of link quality report packets Designating the Link Quality Report Timekeeper This parameter deals with the remote peer not the local one The setting determines whether the remote peer runs the link quality report LQR timer for the connection Setting this parameter enables or disables the remote peer s LQR timer 3 32 303537 A Rev 00 Customizing PPP The peer whose timer is enabled generates one LQR packet for each interval specified in the LQR Reporting Period parameter The peer whose timer is disabled verifies that the other peer did
128. t the parameter to Enable For dial services that use PAP you must configure the local PAP ID through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 17 Local PAP Password Protocols gt PPP gt Interfaces gt Lines None Any text string maximum 25 characters Specifies the PAP password assigned to this interface During the interface s authentication phase all password authenticate request messages sent to this interface by the peer router must include the correct PAP password Otherwise the peer router sends an authenticate NAK message and the link is not created If you have not enabled PAP ignore this field If you set the Local Authentication Protocol to PAPAUTH specify a unique local PAP password for this interface To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable For dial services that use PAP you must configure the local PAP password through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 18 303537 A Rev 00 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Remote PAP ID Protocols gt PPP gt Interfaces gt Lines None Any text string maximum 25 characters Specifies the PAP ID assigned to the remote p
129. ter does not enable or disable VINES routing services for the interface it affects the network control protocol for VINES However disabling the network control protocol for VINES stops VINES traffic from being routed over this interface To stop VINES traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 19 A 6 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID CCP Enable Protocols gt PPP gt Interfaces If you enable data compression when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables data compression This parameter does not enable or disable data compression for the interface However disabling the Compression Control Protocol CCP stops data compression over this interface To stop compression over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 49 IPV6 Enable Protocols gt PPP gt Interfaces If you enable Internet Protocol version 6 IPv6 support when you initially configure PPP on this interface then the IPv6 parameter is enabled by default for PPP Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for IPv6
130. the Interface configuration The Configuration Manager window opens Specifying the Asynchronous Modem Control Character Map During LCP negotiations the peers negotiate the characters that they will recognize as asynchronous modem control characters PPP creates a 32 bit map that represents the negotiated control characters Both routers use this map in sending and receiving data packets While the default value serves for almost all modems you can configure the map for other modem control characters if necessary 3 36 303537 A Rev 00 Customizing PPP The async control character map specifies a value representing one or more asynchronous modem control characters for the peer to recognize escape and that may occur in the data packet Each bit in the map corresponds to one control character 0x00 the right end of the map through Ox1f the left end of the map that is 0 through 31 decimal The actual map is a value used essentially as a mask For example the default map value 0xa0000 655360 decimal allows the escaping of the control characters 0x11 XON and 0x13 XOFF if they occur in the data stream The values 0x7d and 0x7e are always escaped If you have a modem that requires control characters different from the default you can build your own async control character map Determine the corresponding bit for each character by converting the hex value of the control character to decimal For exampl
131. this circuit at any one time e Inthe wfPppMIStatsEntry MIB wfPppMIStatsReSeqBufferCnt is the current count of packets not fragments that the receiver has buffered because they arrived out of order To analyze the effects of fragmentation periodically observe this value under a typical traffic load without fragmentation enabled on the peer router and then observe the value with fragmentation enabled on the peer router Typically this number is higher in configurations with greatly differing line speeds This number should go down when fragmentation is enabled If this number is constantly at or near the maximum number of buffers allowed as indicated in wfPppCircuitMaxBuffers reset the maximum number of buffers allowed to a higher number In addition the higher the value of wfPppCircuitMaxLinkss the more likely it is you ll need to increase wfPppCircuitMaxBuffers wfPppMIStatsReSeqBufferMax is the maximum that wfPppMIStatsReSeqBufferCnt ever reached wfPppMIStatsNumPktsFragmented counts the number of packets that have been fragmented transmit only This indicates how often the router judges that fragmentation is necessary 3 42 303537 A Rev 00 Customizing PPP wfPppMIStatsTxPkts counts the total number of packets transmitted by multilink Comparing this to the number of packets fragmented wfPppMIStatsNumPkts Fragmented helps you see how well the link is doing and whether you need to adjust parameters su
132. through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 20 A 20 303537 A Rev 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Enable PAP Fallback Protocols gt PPP gt Interfaces gt Lines Disable Enable Disable Enabling this parameter causes a fallback to PAP if you have selected CHAP as the authentication protocol and an attempt to negotiate CHAP fails Select Enable or Disable Set this parameter to Enable if you mix authentication types in a pool Remember that you must use an authentication protocol if you are using dial on demand bandwidth on demand or dial backup 1 3 6 1 4 1 18 3 5 9 2 1 1 32 Link Quality Protocol Protocols gt PPP gt Interfaces gt Lines None None LINKQR Enables or disables the Link Quality Protocol for this interface To enable link quality reporting set this parameter to LINKQR When you enable link quality reporting on one side of the connection the router on which you enable it is responsible for monitoring link quality for the connection To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 21 303537 A Rev 00 A 21 Configuring PPP Services Parameter Path Default Options F
133. tiline and Multilink continued Feature Multiline Multilink Packet Depends on the path selection Multilink maintains the sequence resequencing With address based selection the default packets always arrive in sequence With random path selection packets traveling on different paths can arrive at their destination out of sequence of packets sent over different lines of the link Support for bandwidth on demand No Yes Miscellaneous Address based selection does not always result in even traffic distribution across all data paths Random selection provides for even traffic distribution All lines in a circuit must negotiate and perform multilink You cannot use nonmultilink lines in a circuit with multilink lines e All data packets sent over a PPP multilink circuit travel as multilink packets 303537 A Rev 00 2 19 Configuring PPP Services Monitoring PPP Link Quality To ensure that the router can successfully transfer data PPP monitors the quality of the point to point link with link quality monitoring LQM and link quality report LQR packets PPP supports LQM over standard synchronous interfaces only PPP does not support LQM over high speed serial interfaces HSSD BayStream software however does support LQM and LQR over HSSI interfaces Note PPP uses LQM and LQR only if you set the Link Quality Protocol parameter to LINKQR The default is None
134. tinue with the Lines configuration Customizing PPP Authentication Parameters PPP imposes network security by offering support for two types of authentication protocols Password Authentication Protocol PAP and Challenge Handshake Authentication Protocol CHAP Site Manager lets you configure the PPP authentication parameters the BCC does not The following sections describe how to configure PPP to implement PAP and CHAP Note For all dial services you must use PAP or CHAP either of which provides an identification mechanism that is essential to bring up demand backup and bandwidth lines You must configure the CHAP local name CHAP secret PAP ID and PAP password through the Dial menu See Configuring Dial Services for details In addition for all dial services failure of either authentication protocol causes the connection to be dropped and no intervention from the network administrator is needed For leased lines the authentication phase is optional You must first specify what if any local authentication protocol this interface uses The Local Authentication Protocol parameter specifies the type of authentication protocol that this interface uses None PAP or CHAP 3 24 303537 A Rev 00 Customizing PPP If you do not want to enable security features on this interface accept the default None To enable Password Authentication Protocol select PAPAUTH Then define the Local PAP ID
135. tion monitor This router monitors network traffic and line usage When the traffic exceeds a user specified threshold the bandwidth on demand monitor can bring up a secondary line 303537 A Rev 00 2 13 Configuring PPP Services LAN Figure 2 4 shows a configuration that uses the multilink feature Circuit Bundle with 2 links LAN PPPOOOSA Figure 2 4 Multilink Circuit As Figure 2 4 shows a bundle is a logical connection between two routers Once you have configured a circuit for multilink or bandwidth on demand operation it always uses PPP multilink encapsulation All lines in a circuit must negotiate and perform multilink You cannot pair non multilink lines with multilink lines in a circuit Multilink can resequence packets sent over different lines of the link PPP supports packet fragmentation and reassembly as described in the section Using Multilink Fragmentation on page 2 16 You can use the multilink feature over the following physical media e V35 e MCTI MCE1 e ISDN B channel drivers e Raise DTR modems e V 25bis modems 2 14 303537 A Rev 00 PPP Concepts Multilink and Multiline Compatibility with Previous Versions A multiline circuit using PPP cannot communicate with a router running a router software version earlier than 9 0 Pre 9 0x versions use a multiline circuit with LCP running on only one line In this situation you must use uniline PPP A multilink circuit c
136. ts to negotiate a dial up connection If the timer expires the connection is dropped This parameter is valid only for switched PPP interfaces Accept the default value 10 seconds or enter an integer in the range 1 through 1000 1 3 6 1 4 1 18 3 5 9 2 1 1 44 Magic Num Disable Protocols gt PPP gt Interfaces gt Lines Enable Enable Disable Disables the loopback test that the peer normally performs as part of its network integrity checking The loopback test ensures that a peer is talking to the network not to itself Accept the default value Enable unless you are testing the connection After disabling this parameter you must explicitly set it to Enable to reenable loopback checking 1 3 6 1 4 1 18 3 5 9 2 1 1 45 303537 A Rev 00 A 27 Configuring PPP Services Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID MRU Size bytes Protocols gt PPP gt Interfaces gt Lines 1500 1 to 4600 Sets the maximum receive unit MRU size being used on the line Accept the default value 1500 bytes or enter in the range 1 to 4600 bytes If you have a network with Version 11 02 or Version 12 00 routers and also with earlier Bay Networks routers or Corporate Lan Access Module CLAM routers configured with dial on demand standby dial backup or bandwidth on demand circuits make sure that the valu
137. u do this System responds 1 From the Protocols menu choose PPP The Interfaces menu appears 2 Choose Interfaces The Interfaces window opens 3 Set the Remote AppleTalk Node See page A 9 4 Set the AppleTalk Routing Protocol See page A 10 5 If you have no other Interface parameters The Configuration Manager window to configure click on OK Otherwise appears continue with the Interface configuration 3 6 303537 A Rev 00 Customizing PPP Enabling Bridging on an Interface When bridging is enabled for an interface PPP accepts bridged traffic in the specified encapsulation and forwards it over the PPP network Site Manager lets you enable or disable bridging for Ethernet FDDI and or token ring encapsulated packets By default all these parameters are enabled If you change any of these parameters dynamically that is for a router that has already completed its negotiations you must force LCP renegotiation on the interface as previously described Before you can enable a particular type of encapsulated bridged traffic you must enable bridging on the interface You do this by default if you enabled bridging when you initially set up the PPP interface but you can disable or re enable it here To stop traffic from being bridged over this interface set this parameter to Disable The Bridge Enable parameter enables or disables the network control protocol for the bridge It does not enable or disable
138. ultilink 2 12 parameter descriptions A 1 services 1 2 show ppp commands D 1 starting 1 1 1 4 statistics C 1 PPP Interfaces window A 13 PPP Line Lists window A 13 PPP line parameters configurable with BCC 3 14 customizing 3 14 PPP Mode parameter 2 15 3 11 A 12 B 2 prioritization protocol 2 17 product support xx Promiscuous synchronous line parameter 2 24 Index 5 protocol data link control 2 3 network control 2 2 2 4 protocol prioritization definition 2 17 multiline and multilink 2 17 protocol reject packet 2 5 publications Bay Networks xix Q quality monitoring and reporting 2 20 R Raise DTR modem 2 14 receive percentages calculating and viewing 3 42 re enabling PPP 1 5 remote address setting 3 4 remote AppleTalk node number 3 6 Remote AppleTalk Node parameter A 9 B 1 Remote IP Address parameter A 8 B 1 remote PAP ID 3 28 Remote PAP ID parameter A 20 remote PAP password 3 28 Remote PAP Password parameter A 20 remote peer IP address 3 4 renegotiating LCP 3 3 3 16 resequencing packets 2 15 restart timer 3 18 Restart Timer in Seconds parameter A 15 B 2 RFC1661 Compliance parameter A 28 B 3 RFCs relevant to PPP 2 16 2 25 routing over a PPP link 2 4 routing table management protocol RTMP 3 6 Index 6 S Seconds between Xmit of Echo Request parameter A 15 B 2 secret CHAP 3 30 Service synchronous line parameter 2 24 settin
139. unction Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Peer Link Quality Report Timer Protocols gt PPP gt Interfaces gt Lines Enable Enable Disable This parameter deals with the remote peer not the local one The setting determines whether the remote peer runs the link quality report LQR timer for the connection Setting this parameter enables or disables the remote peer s LQR timer The peer whose timer is enabled generates one LQR packet for each interval specified in the LQR Reporting Period parameter The peer whose timer is disabled verifies that the other peer did in fact send an LQR If the receiving peer does not receive three successive LQRs it disables the connection Use this parameter only when you have set the Link Quality Protocol parameter to LINKQR Accept the default Enable if you want the peer router to maintain an LQR timer for the interface Reset this parameter to Disable if you do not want the peer to maintain the LQR timer for the interface To implement your changes set the Enable LCP parameter to Disable apply the change and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 22 LQR Reporting Period Protocols gt PPP gt Interfaces gt Lines 3 seconds 1 through 120 Specifies the maximum number of seconds between the transmission of LQR packets Use this parameter only when you set the Link
140. unmeednienaasanesteuuesectscneenares 2 2 Routing overa PPP LINK pects isesavcicciuiataanainasincasiearaccns iene ceactantcatexebuidasheanneanoriaseaatiadabenen 2 4 e eE anaa e e A E EA E E A N A E A A E 2 5 EEEN OPPP LDE crn rere renner rrr Teter etree rr rrr re ere 2 5 Authenticating the PPP Link PAP and CHAP c cccccceeeecesceeeeeeeeeeceesaeeseeeeseeeseeeees 2 8 Password AUTHENTICATION PROWCO ccirniscaccrvoriccccenersscccenmmrsadeaahan tcananinecauccnmivansennie 2 8 Challenge Handshake Authentication Protocol c eccecceeeeeeeeeeeeeenneaeeeeeeeees 2 8 One Way Aunenigahor sesioen i a aaa 2 9 Negotiating Network Layer Protocols sccintisscesniscccteeisuncscotiscnenlsnton inet tucnsatmuandanniveatone 2 9 Datagram Encapsulalion osisssa aa a E 2 10 303537 A Rev 00 V PPP Die Services SUB Orr sistecrradcctcnarienitaa ea aati ann ae 2 10 RYE elie 1 0c 10 6 einne operat yreerertryeerern triton errr ney rt rmerer tT yrMcrrre renee 2 11 Bandwidih on Demanii seriinin 2 11 Bia BSC an OEA 2 11 PPP POUN aana a ia eae 2 12 PPP PANNING EN E EE A E A E E E AT E E E E 2 12 Weibo PPP MURIA R coionnan a a 2 13 Multilink and Multiline Compatibility with Previous Versions s s s a 2 15 Connguring MUNIN Operator sassis na S 2 15 OAC Tang LOADS sarsari anana AE TE NERE 2 15 Using Mukilink Fragmentalon 3 cccsscaseeeatiesrenaearasadeauieenddeeniees sigue daeesiopuueeiuteier eee 2 16 Using Protocol Prioritization with Multiline and
141. v 00 PPP Parameters Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID IP Enable Protocols gt PPP gt Interfaces If you enable IP support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for IP This parameter does not enable or disable IP routing services for the interface it affects the network control protocol for IP However disabling the network control protocol for IP stops IP traffic from being routed over this interface To stop IP traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 12 OSI Enable Protocols gt PPP gt Interfaces If you enable Open Systems Interconnect OSI support when you configure PPP on this interface this parameter is automatically set to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for OSI This parameter does not enable or disable OSI routing services for the interface it affects the network control protocol for OSI However disabling the network control protocol for OSI stops OSI traffic from being routed over this interface To stop OSI traffic from being routed over this interface set this paramete
142. v v Dial backup only for BCC configuration The following chapters describe how to do all these tasks Chapter Chapter 2 PPP Concepts gives you detailed background information on PPP to help you make appropriate customizing choices Chapter Chapter 3 Customizing PPP describes how to change the default settings after you configure the circuit Note In examples the text you enter appears in bold type 303537 A Rev 00 Starting PPP Services Starting Configuration Tools Before configuring PPP services refer to the following user guides for instructions on how to start and use the Bay Networks configuration tool of your choice Configuration Tool User Guide Bay Command Console BCC Using the Bay Command Console AN BN Routers Site Manager Configuring and Managing Routers with Site Manager NETarchitect Getting Started with Optivity Network Management System Configuring and Maintaining Networks with the NETarchitect System These guides also describe generically how to create or modify a device configuration and how to get help Adding or Modifying Interfaces for PPP Before you can configure PPP specific parameters you must first configure at least one synchronous SYNC interface or high speed serial interface HSSJ that supports PPP as its WAN protocol You must also configure the LAN protocol usually IP for that interface The documents listed
143. w from the Site Manager Statistics Manager tool or from the Technician Interface Table C 1 PPP Statistics MIB Object Name What It Tells You wfPppMIStatsCircuitID Circuit number for this instance wfPppMIStatsHomeSlot Slot on which this multilink control subsystem exists wfPppMIStatsLineCnt Current count of lines in the multilink bundle wfPppMIStatsBundleSpd Current total bandwidth of the multilink bundle wfPppMIStatsTxOctets Number of octets transmitted by multilink wfPppMIStatsTxPkts Number of packets transmitted by multilink wfPppMIStatsAvgTxListLen Average number of packets received in the transient list by the Multilink Transmit gate wfPppMIStatsRxOctets Number of octets received without error wfPppMIStatsRxPkts Number of packets received by multilink wfPppMIStatsReasmFails Number of packet reassembly failures wfPppMIStatsSeqNumberLost Number of multilink packets considered to be lost on the wire wfPppMIStatsSeqNumberArrivedLate Number of multilink packets that arrive containing an old sequence number that is packets with a more current sequence number have already been sent up to NCP continued 303537 A Rev 00 C 1 Configuring PPP Services Table C 1 PPP Statistics continued MIB Object Name What It Tells You wfPppMIStatsReSeqBufferCnt Number of multilink packets currently stored in the ReSe
144. wer volume data transfers You can for example use an asynchronous modem connected to either a router or a PC to dial into a Bay Networks AN ASN BN or BCN router or terminal server such as a 5390 with asynchronous modem banks You configure most of the synchronous asynchronous parameters when you set up dial services on a circuit and configure your modem pools A modem pool can contain synchronous lines asynchronous or ISDN lines When you create or add a line to a dial services modem pool for a line configured to use PPP the parameters that you must supply differ depending on whether it is a synchronous or an asynchronous line Refer to Configuring Dial Services for details on setting up and configuring both synchronous and asynchronous lines Recognizing Asynchronous Modem Control Characters For a link that uses asynchronous modems you can configure PPP to recognize and escape specified control characters that may occur in data packets An example of such control characters is the XON XOFF flow control mechanism that asynchronous modems use The escape mechanism removes spurious control characters that external hardware may have introduced on the link 303537 A Rev 00 2 23 Configuring PPP Services During LCP negotiation both peers negotiate the characters that they will recognize as modem control characters PPP calculates and displays a map value based on this negotiation Each end of the link maintains an asynchr
145. x1F the left end of the map that is 0 through 31 decimal If you have a modem that requires control characters different from the default determine the corresponding bit for each character by converting the hex value of the control character to decimal For example 0x1F 31 decimal so to escape that character set the leftmost bit in the map Do the same thing for each control character to be escaped Once you ve decided what bits in the map to set enter either the hex character equivalent to the bit string or the decimal equivalent To escape all control characters in a packet set the map to OxFFFFFFFF 1 3 6 1 4 1 18 3 5 9 2 1 1 41 A 26 303537 A Rev 00 PPP Parameters Parameter Path Default Range Function Instructions MIB Object ID Parameter Path Default Range Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Authentication Timer Protocols gt PPP gt Interfaces gt Lines 10 1 through 1000 seconds Sets the time limit the router waits for a response to its authentication messages Accept the default value 10 seconds or enter an integer in the range 1 through 1000 If you have not configured PAP or CHAP ignore this field 1 3 6 1 4 1 18 3 5 9 2 1 1 43 Convergence Timer Protocols gt PPP gt Interfaces gt Lines 300 seconds 1 through 5000 seconds Limits the amount of time PPP attemp
146. y 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 shipment 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 t

Avaya Configuring PPP Services User's Manual

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