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SuperStack II Hub 10 Management User Guide

1. Consult the manual of the application you use for details of how to set up the possible 1024 alarms Each alarm monitors its assigned counter by calculating the differences over a preset time interval It remembers the high and low tide marks and it can take actions when the value of the counter has crossed preset thresholds 8 APPENDIX E RMON AND ADVANCED MANAGEMENT The diagram below shows the variation of a typical counter with time Counter high threshold 10596 of high tide mark high tide mark low threshold 8096 of high tide mark low tide mark Time Figure E 1 Counter Values During Autosetting Of Thresholds Alarm thresholds may be autocalibrated or set manually Autocalibration is a means of calculating alarm thresholds specific to the activity of the counter being monitored For autocalibration the high threshold is set to 596 above the high tide mark Also the low threshold is set to 2096 below the high tide mark see diagram above Manually you may choose any value for the thresholds using your network manager The tide marks are monitored continually during normal running to provide data for later calibration This explains the high tide mark being above the threshold level in the diagram below DUA1663 0BAA03 Counters and RMON Alarms E 9 Counter high tide mark now high threshold DUA1663 0BAA03 high tide when threshold auto set low threshold low tide
2. Part DUA1663 0BAA03 Revision 01 Published September 1996 SUPERSTACK II HUB 10 MANAGEMENT USER GUIDE MANAGEMENT MODULE 3C16630A ADVANCED RMON MODULE 3C16632 3Com Corporation m 5400 Bayfront Plaza m Santa Clara California m 95052 8145 3Com Ireland 1996 All rights reserved No part of this documentation may be reproduced in any form or by any means or used to make any derivative work such as translation transformation or adaptation without permission from 3Com Ireland 3Com Ireland reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Ireland to provide notification of such revision or change 3Com Ireland provides this documentation without warranty of any kind either implied or expressed including but not limited to the implied warranties of merchantability and fitness for a particular purpose 3Com may make improvements or changes in the product s and or the program s described in this documentation at any time UNITED STATES GOVERNMENT LEGENDS If you are a United States government agency then this documentation and the software described herein are provided to you subject to the following restricted rights For units of the Department of Defense Restricted Rights Legend Use duplication or disclosure by the Government is subject to restrictions as set forth in subparagraph c 1 ii for restricted Right
3. 3C16671A SuperStack Il Hub 10 24 Port TP 3C16672A SuperStack II Hub 10 24 Port Telco This module can be installed in the earlier LinkBuilder FMS II units also 1 16 CHAPTER 1 INTRODUCTION SuperStack Il Hub 10 units support an optional redundant backup power supply that can help to reduce total power failures The module supports all nine groups of RMON SuperStack Il Hub 10 Advanced RMON Module The SuperStack Il Hub 10 Advanced RMON Module 3C16632 can be installed wherever its companion module 3C16630A may be used including the earlier LinkBuilder FMS modules See the list above The module supports comprehensive highly accurate advanced RMON statistics for heavily loaded networks DUA1663 0BAA03 INSTALLATION AND SETUP FOR MANAGEMENT Safety Information PN WARNING Please read the following safety information before installing the Management Module or Advanced RMON Module Installation and removal of either Module should be carried out by qualified personnel only Read and follow the Safety Information for the installation and removal of the SuperStack II unit This can be found in the user manual for the unit You must disconnect all the units in the stack from the mains power supply before installing the Module The Modules contain static sensitive components that can be irreparably damaged by static generated by the human body Do not touch the components on the circuit board Ensu
4. 3ComFacts Automated Fax Service 3Com Corporation s interactive fax service 3ComFacts provides data sheets technical articles diagrams and troubleshooting instructions on 3Com products 24 hours a day seven days a week Call 3ComFacts using your touch tone telephone International access numbers are Country Fax Number Hong Kong 852 2537 5610 UK 44 1442 278279 US 1 408 727 7021 Local access numbers are available within the following countries Country Fax Number Country Fax Number Australia 800 123853 Netherlands 06 0228049 Belgium 0800 71279 Norway 800 11062 Denmark 800 17319 Portugal 0505 442607 Finland 98 001 4444 Russia 956 0815 Moscow only France 05 90 81 58 Spain 900 964445 Germany 0130 8180 63 Sweden 020 792954 Italy 1678 99085 UK 0800 626403 Support from Your Network Supplier DUA1663 0BAA03 If additional assistance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services When you contact your network supplier for assistance have the following information ready Diagnostic error messages B 4 APPENDIX B TECHNICAL SUPPORT m A list of system hardware and software including revision levels m Details about recent configuration changes if applicable If you are unable to contact your
5. Main Unit 3 28 Repeater Resilience Main Unit ID 3 39 Port Resilience Management Level 3 22 Repeater Management Media Type 3 35 Port Statistics Media Type 3 39 Port Resilience Media Type 3 36 Port Setup pP Multicast Frames Repeater Statistics NW w Multicast Frames Unit Statistics m Ww Un Multicast Frames Port Statistics Edit User Screen New Password Node Setup Screen wow Wi Io BA Number of Resets Status Screen rr rl ZO ZO ZO DD ZO DD DDD 20 2d 2 DD U Z0 Ug FWD DVD DD m Ww nn Pair Enable 3 28 Repeater Resilience Pair State 3 28 Repeater Resilience Parity 3 15 Serial Port Setup Screen Partition State 3 36 Port Setup Password 3 7 Logon Screen Password 3 10 Auto Logout Screen Password 3 20 Create User Screen DUA1663 0BAA03 Parameter Key Page Screen Password 3 21 Edit User Screen POLL 3 44 Remote Poll Port ID 3 22 Repeater Management Port ID 3 35 Port Statistics Port ID 3 36 Port Setup Port State 3 36 Port Setup Ww Power Supply Status REMOTE POLL 33 Unit Setup e o Main Menu ge Remote Telnet Security Local Security Screen Repeater Health 3 27 Repeater Setup REPEATER MANAGEMENT 3 9 Main Menu RESET 3 9 Main Menu Reset Count 3 47 Fault Log RESILIENCE uM N N Repeater Management Remote Poll vs EN Ts Round Trip Time Runt Frames Repeater Statistics d w Runt Frames Unit Statistics
6. Removing DUA1663 0BAA03 Inserting the Hub 10 Module 2 5 Secure the module using the supplied longer screw and washer on the left hand side of the cover and the two original retaining screws on the right hand side of the cover Return your Hub 10 unit to its usual position If your Hub 10 unit is part of a stack reconnect the units using the hub expansion cables starting with the management unit Connect the OUT port of the management unit to the IN port of the next unit in the stack Connect the OUT port of the next unit to the IN port of its neighbor Continue in this manner until all the units in the stack are connected You can now power up the stack as described in the section Power Up Sequence on page 2 6 the Hub 10 Module f you need to remove the module perform the following steps Disconnect all the units in the stack from the mains power supply Disconnect the unit with the Module from the other units in the stack Unscrew the three module retaining screws and slide the Module partly out to expose the connecetors Disconnect the management connector Disconnect the module s power connector by pulling gently but firmly on its insert removal tab Slide the module out from the unit If you are not fitting another module replace the original blanking plate to aid the circulation of cooling air and prevent the entry of dust and debris into the unit Use the two shorter retaining screws you have just removed
7. The Port Setup screen allows you to configure a selected port The screen is illustrated below 3Com SuperStack II Port Setup Unit ID 2 Port ID 1 edia Type Twisted Pair 10BaseT Port State Enabled Security Enabled Link Pulse Enabled Link State Not Available Lost Links 0 PN Partition State Not Autopartitioned OK CANCEL Figure 3 22 Port Setup Screen DUA1663 0BAA03 DUA1663 0BAA03 Repeater Management 3 37 The screen shows the following fields Unit ID Read only This field shows the unit to which the port belongs Port ID Read only This field shows the identifier of the port you selected to set up Media Type Read only This field indicates the media type of the port Use Table 3 4 to determine the media type Table 3 4 Media Types Media Type Description AUI Standard AUI female connection with no internal transceiver Modular Male AUI Male AUI connection with internal transceiver Modular Female AUI Female AUI connection with no internal transceiver Thin Coax 10Base2 t Standard BNC Thin Ethernet connection Twisted Pair TOBASE T t Twisted Pair RJ45 connection Fiber 10BaseFL t Fiber ST connection 10BaseFL FOIRL Bridge 1 Standard AUI female connection Not Fitted No transceiver is installed t These media types may be prefaced by Modluar to indicate a tranceiver module is fitted Port State Ch
8. plus the screw kept with the original blanking plate 2 6 CHAPTER 2 INSTALLATION AND SETUP FOR MANAGEMENT Power Up Sequence p When any unit in the stack is powered up the Module will reset all the units in the stack Therefore to avoid an unnecessary number of resets power up any other units in the stack before powering up the unit containing the Module Connect the mains power cable to the unit with the Module installed and switch on at the mains socket The module will perform tests on all units in the stack and the unit will run through its self test sequence This may take up to 20 seconds The MGMT LED on the front panel of the unit will flash during the self test At the end of the self test The MGMT LED on the front panel of the management unit will light up steady green The appropriate UNIT number LED on each unit in the stack will light If the MGMT LED is off colored red or flashing refer to LEDs and Reset Button on page 2 7 As a default the Module powers up the unit with A null IP address The serial port set to autoconfiguration Autoconfiguration applies to baud rate only Parity character size and stop bits are fixed All ports enabled The unit will function normally but you may need to configure some of these parameters before you can manage the unit as explained in the sections Connecting Management Equipment to the Serial Port and Managing over the Network later in this chap
9. to D disable all ports See the user guide for the Hub 10 unit for details To manage Resilient Links see Port Resilience on page 3 39 1 With the components facing downwards locate the Module in the guide rails near the top of the unit Slide the module half way into the unit 2 Refer to Figure 2 2 Using the insert remove tab attached to the connector A push the connector into the socket B on the card below the Module The connector has a lip on the upper face Ensure that the lip is facing upwards and that the pins in the socket align correctly with the connector Push the connector in fully DUA1663 0BAA03 2 4 CHAPTER 2 INSTALLATION AND SETUP FOR MANAGEMENT Figure 2 2 Inserting The Hub 10 Module WARNING During installation both the insert remove tab and the lip A on the connector must be facing the module s printed circuit board see Figure 2 3 This means that the connecting wires will be twisted as shown in that illustration below Failure to ensure that the connector is correctly oriented can result in damage to the module when the unit is powered up LIP Figure 2 3 Detail Of The Hub 10 Connector 3 Connect the management connector C to the unit expansion connector directly below it on the unit Make sure the connectors are fully pushed in 4 When the connectors are in place slide the Module home fully into its slot taking care not to snag the connecting wires DUA1663 0BAA03 5
10. 0BAA03 3 48 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE If you suspect that the stack is not functioning correctly in the way you have configured it you can reset the entire stack from the Reset screen This has the same effect as pressing the Reset button on the rear of the Module To display the screen actuate the RESET button on the Main Menu screen This is only available to users with manager access level or higher 3Com SuperStack II Reset This operation will reset the device simulating a power cycle OK CANCEL Figure 3 27 Reset Screen A Resetting the stack in this way is similar to powering off and on the unit containing the Module None of the setup information will be lost CAUTION Performing a reset may cause some of the data being transmitted onto the network to be lost Select the OK button to perform the reset DUA1663 0BAA03 Initialization 3 49 Initialization This operation is only available to users with security access level The initialization operation performs a reset as described in Reset on page 3 48 and in addition returns the NVRAM to its initial values You should only initialize the stack if The configuration of the stack no longer suits your network Other troubleshooting efforts have failed To display the Initialization screen actuate the INITIALIZE button on the Main Menu screen 3Com SuperStack II Initializat
11. 3 39 Port Resilience Area of fault R 3 47 Fault Log Autoconfig uration C 3 15 Serial Port Setup Screen Autopartitions R 3 26 Repeater Statistics Autopartitions R 3 31 Unit Statistics Autopartitions R 3 35 Port Statistics Bandwidth Used R 3 26 Repeater Statistics Bandwidth Used R 3 31 Unit Statistics Bandwidth Used R 3 35 Port Statistics Boot Software Version R 3 45 Status Screen Broadcast Frames R 3 26 Repeater Statistics Broadcast Frames R 3 31 Unit Statistics Broadcast Frames R 3 35 Port Statistics Char Size R 3 15 Serial Port Setup Screen CLEAR COUNTERS D 3 26 Repeater Statistics CLEAR COUNTERS D 3 31 Unit Statistics CLEAR COUNTERS D 3 35 Port Statistics Community String C 34 Edit User Screen Community String E 3 20 Create Users Screen Community String E 3 03 Setup Traps Screen Community SNMP C 3 18 Local Security Screen Connection Type C 3 15 Serial Port Setup Screen CREATE USERS B 3 17 User Access Level Menu Data Link Protocol R 3 10 Setup Menu Data Rate Mismatches R 3 26 Repeater Statistics Data Rate Mismatches R 3 31 Unit Statistics Data Rate Mismatches R 3 35 Port Statistics DCD Control C 3 15 Serial Port Setup Screen DUA1663 0BAA03 Parameter Key Page Screen Default Router E 3 10 Setup Screen DELETE D 3 39 Port Resilience DELETE USERS B 3 17 User Access Level Menu DELETE USERS D 3 21 Delete Users Screen Device IP Address E 3 10 Setup Screen Device SubNet Mask E 3 10 Setup Screen DRS Control C 3
12. 5 roll over E 7 round trip time 3 45 router IP address 3 11 runt frames D 3 5 safety information vii 2 1 safety standards A 1 screen areas 3 1 screen components 3 2 screen map 3 5 screens auto logout 3 10 create user 3 20 delete users 3 21 edit user 3 21 fault log 3 47 initialization 3 48 local security 3 18 logon 3 7 main banner 3 6 main menu 3 9 port resilience 3 39 port setup 3 36 port statistics 3 35 remote poll 3 44 repeater management 3 23 repeater resilience 3 28 repeater setup 3 27 repeater statistics 3 26 reset 3 47 security 3 17 serial port setup 3 15 setup 3 10 software upgrade 3 50 status 3 45 trap setup 3 13 unit setup 3 33 unit statistics 3 31 security 3 37 serial port autoconfiguration 3 16 enabling disabling access 3 19 SLIP workstation connecting 2 9 terminal emulator connecting 2 8 VT100 terminal connecting 2 8 serial port setup screen 3 15 setup screen 3 10 short events D 3 SLIP 2 9 3 11 address 3 11 parameters 3 11 subnet mask 3 12 smart object E 11 SNMP community string 3 21 enabling disabling access 3 19 SNMP workstation connecting to serial port 2 9 software image version number 3 46 software upgrade 3 50 software upgrade screen 3 50 Source address changes 3 36 speed serial port setup 3 16 stacking units 1 2 standards A 1 standby links available 3 43 standby port 3 30 3 42 standby unit 3 30 3 42 starting the management facility 3 6 statistics glossary of ter
13. Reset command see Reset on page 3 48 The Configure LED will go on for a few seconds after the Reset button is pressed 2 8 CHAPTER 2 INSTALLATION AND SETUP FOR MANAGEMENT Connecting Management Equipment to the Serial Port This section describes how to connect and set up equipment to communicate with the Module via the serial port out of band management By default the Module will automatically configure its baud rate You will need to set the character size 8 stop bit 1 and parity none settings of the connected equipment to work with the Module Connection to the serial port may be direct or through modems giving the options of local or remote management The maximum rate the autoconfiguration function will detect is 9600 baud Cables of the appropriate type for connection to the serial port should be available from your supplier If you wish to make up your own cables refer to the pin outs given in Appendix A Chapter 3 describes the VT100 management interface in detail Connecting a VT100 Terminal To connect a VT100 terminal directly to the serial port you need a standard null modem cable See Appendix A for the pin out information Connect one end of the cable to the serial port on the Module and the other to the serial R 232 port on the VT100 terminal The Module automatically configures its baud rate as described above but you must set the character size 8 stop bit 1 and parity none settings of
14. Runt Frames 3 35 Port Statistics SECURITY 3 9 Main Menu Security 3 36 Port Setup SELF TEST 39 Main Menu T oo Serial Port Security Local Security Screen SERIAL PORT 3 10 Setup Screen Server IP Address 3 50 Software Upgrade SETUP 3 9 Main Menu SETUP 3 22 Repeater Management SETUP TRAPS l Setup Screen y y N O Short Events Repeater Statistics Short Events Unit Statistics w w Ww w Un Short Events Port Statistics SLIP Address Z0 D D UO UO DDD DU DUU DAD 2 2o M Y rn y N o Setup Screen DUA1663 0BAA03 F 6 APPENDIX F INDEX OF MANAGEMENT ACTIONS AND DATA Parameter Key Page Screen SLIP SubNet Mask 3 10 Setup Screen Source Address Changes 3 35 Port Statistics Speed serial line 3 15 Serial Port Setup Screen Standby Links Available 3 39 Port Resilience Standby Port 3 28 Repeater Resilience Standby Port ID 3 39 Port Resilience Standby Unit 3 28 Repeater Resilience Standby Unit ID 3 39 Port Resilience STATISTICS 3 22 Repeater Management STATUS 3 9 Main Menu Status 3 10 Setup Screen Stop Bit 3 15 Serial Port Setup Screen SOFTWARE UPGRADE uu o Main Menu B Un System Up Time Status Screen Remote Poll ra KR Target Address Throttle Setup Traps Screen 1 NS N Time since reset Fault Log ol Too Long Frames Repeater Statistics T w Too Long Frames Unit Statistics NA Ww Un Too Long F
15. SNMP manager s IP address and the community string is correctly configured see Trap Setup on page 3 13 The SNMP manager or Telnet workstation can no longer access the device Check that Remote Telnet access or Community SNMP access is enabled see Local Security on page 3 18 Check that the port through which you are trying to access the device has not been disabled see Port Setup on page 3 36 If it is enabled check the connections and network cabling at the port DUA1663 0BAA03 Try accessing the device through a different port If you can now access the device a problem with the original port is indicated Re examine the connections and cabling Possibly there is a network problem preventing you accessing the device over the network Try accessing the device through the serial port Try resetting the device by pressing the reset switch You forget your password and cannot log in If you are not one of the default users monitor manager or security another user having security access level can log in delete your user name and create a new user name for you with a new password Alternatively another user having security access level can log in and initialize the device as described in Initialization on page 3 49 This will return all configuration information including passwords to the initial values In the case where no one knows a password for a security level user contact your supplier DUA
16. Statistics 3 31 Unit Setup 3 33 Port Statistics 3 35 Port Setup 3 36 Port Resilience 3 39 Remote Poll 3 44 Status 3 45 Fault Log 3 47 Reset 3 48 Initialization 3 49 Software Upgrade 3 50 TECHNICAL INFORMATION CABLE PIN OUTS AND PROTOCOLS Standards A 1 BABT Approval A 1 Electrical A 2 Processor and Memory A 2 Cable Pin Outs 3 Protocol Addresses 5 IPX Addresses A 5 IP Addresses A 5 Obtaining a Network Number A 6 TECHNICAL SUPPORT On line Technical Services B 1 3Com Bulletin Board Service 1 World Wide Web Site 2 ThreeComForum on CompuServe 2 3ComFacts Automated Fax Service 3 Support from Your Network Supplier 3 Support from 3Com 4 Returning Products for Repair 5 C TROUBLESHOOTING D STATISTICS E RMON AND ADVANCED MANAGEMENT What is RMON E 1 Benefits of RMON E 2 3Com Transcend RMON SmartAgents 2 The SuperStack Hub 10 RMON Implementation E 4 The Management Information Base MIB 5 Counters 7 Counters and RMON Alarms E 7 Using Alarms E 11 Audit Log E 12 F INDEX OF MANAGEMENT ACTIONS AND DATA INDEX ELECTRO MAGNETIC COMPATABILITY STATEMENT FCC Statement 1 CSA Statement 1 LIMITED WARRANTY ABOUT THIS GUIDE A Word about Safety Please pay careful attention to the Warning and Safety Information panels that appear throughout this guide These panels give information that will protect YOU and the SuperStack Il equipment Look
17. Very Long Events 1 Broadcast Frames 2 Data Rate Mismatches 0 Late Events 0 Total Collisions 45 Runt Frames 123 Total Errors TL AutoPartitions 0 Bandwidth Used 5 0 Errors 10000 Packets 0 CLEAR COUNTERS OK Figure 3 19 Unit Statistics Screen The screen is updated every 3 seconds If the top limit of a counter 4294967295 is reached the counter will roll over reset to zero automatically After this event the individual figures may give a false impression of network conditions if taken in isolation All the fields are read only Refer to Appendix D for a detailed description of the statistics fields Unit ID This field shows the identifying number of the unit you have selected from which to collect statistics Unit Type This field identifies the type of unit you are managing CLEAR COUNTERS Button For users with an access level of manager or higher Move the cursor to this button and press Return to reset all the unit statistics counters to zero Clearing the unit s counters affects all users and clears the counters for all the ports on this unit CANCEL Button Move the cursor to this button and press Return to go back to the Repeater Management screen without clearing the counters DUA1663 0BAA03 Repeater Management 3 33 Unit Setup You access the Unit Setup screen from the Repeater Management screen by selecting management level Unit then actuating the SETUP butto
18. WARRANTIES EXCLUSIVE EDY SHALL BE REPA RRANTIES AND REMEDIES ARE EXCLUSIVE AND A P ER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE R PURPOSE 3COM NEITHER ER LIABILITY IN CONNECTION SOLE RE OPTIO WARRA INCLUD HAZARD o SUCH DAMAGES Some states do not allow the exclusion of implied warranties or th damages for consumer products so the above limitations and exc FA3CO THE FOREGOING WA TIES EXPRESS OR IM G WARRANTIES OF ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTH WITH THE SALE INSTALLATIO 3COM SHALL NOT BE LIABLE ALLEGED DEFECT IN THE PRO PERSON S MISUSE NEGLECT I ANY OTHER CAUSE BEYOND THE RA N MAINTE UNDER THIS WARRANTY IF DUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOM NSTALLATION OR TESTI Limitation of Liability HALL 3COM BE LIABLE FOR I Y KIND OR FOR LOSS OF REVENUE LOSS OF BUSINESS OR OTH ONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE F ITS PRODUCTS EVEN IF 3COM OR ITS AUTHORIZED RESELLER H PRODUCT DOES IR REPLACEMENT OR REFU LIED EIT ERCHANTABILITY AND FIT ANCE OR USE O 2 PROPE GE OF THE INTENDE OT OPERATE AS WARRANTED ABOVE CUSTOMER S TS TESTING AND EXA O EVENT WHETHER BASED N CONT D OF THE PURCHASE ESS FOR A PARTICULA F ITS PRODUCTS G UNAUTHORIZE D USE OR BY ACCIDENT RACT OR TORT I CIDENTAL CONSEQUENTIAL INDIRECT SPECIAL O
19. and change the configuration of all units in the stack Set up resilient links You can protect a critical communication link against failure by ensuring that should the main link fail a standby link immediately and automatically takes over Implement security features For example each user is assigned an access level that determines which management parameters the user can view or modify Also end station access can be restricted to a particular port Monitor network performance The management facility maintains statistics that assist you to monitor the operation of the network and perform predefined actions automatically when thresholds are exceeded Poll other devices on the network You can use one of several ways to access the management facility Over the network using an SNMP network manager such as Transcend WorkGroup Manager for Windows 3C15000 series Each network manager provides its own user interface to the management facilities Using SNMP management for example you can configure traps to be 1 14 CHAPTER 1 INTRODUCTION sent to the management station if critical thresholds are exceeded You can use SNMP running over the IP or IPX protocols m By connecting a VT100 terminal or workstation with terminal emulation software to the serial port on the Module The terminal can be connected directly or remotely via a modem The VT100 management interface which is a menu driven user interface built into the Module
20. for the Warning symbol A which always accompanies the appropriate message WARNING nstallation and Removal of the SuperStack Il Hub 10 A Management Module or Advanced RMON Module must only be carried out by Qualified Personnel About this User Guide This guide describes how to install the SuperStack II Hub 10 Management Module and SuperStack Il Hub 10 Advanced RMON Module and use them to manage SuperStack II stacks via the VT100 interface or an SNMP application A stack is one or more units such as SuperStack Il Hub 10 12 Port TP which you connect together to function and manage as a single logical repeater Throughout this guide Module can be taken to refer to either product The guide is written for the system or network administrator who is responsible for setting up devices used on the network If you are using management on your network for the first time it is possible you will make mistakes We have tried to identify the likely errors you may make and have provided hints and tips to help you recover from error viii ABOUT THIS GUIDE situations If you are already familiar with network management you will be able to skip some of the information in the guide and use the information given for reference purposes The guide assumes that you are familiar with VT100 terminals modems PCs and SNMP You will need to refer to other manuals for this information See Other Useful Publications on page ix This guide exp
21. is important or secret data on your network 3 20 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE Create User You access the Create User screen by actuating the CREATE USER button on the Security screen This option is available only for users with security access level Use this screen to add new users There can be up to 10 users including the three default users Up to three users can concurrently access the management facility using Telnet There is no limit to the number of SNMP remote management sessions 3Com SuperStack II Create User User Name bob Password 1 Access Level Monitor Community String bob OK CANCEL Figure 3 11 Create User Screen User Name Text Field Enter the name of the user The name can be up to 10 characters The user name is case sensitive Password Text Field Enter a password for this user The password can be up to 10 characters The password is case sensitive and will not be displayed on the screen Access Level Choice Field Monitor Secure Monitor Manager Specialist Security Enter an appropriate access level for the new user by cycling through the options using the space bar DUA1663 0BAA03 User Access Level 3 21 Community String Text Field By default the community string is the same as the User Name You can change this string if you wish to any text string of up to 32 characters The community string is use
22. logon to the facility enter your user name and password in the appropriate fields and select OK The Main Menu screen will be displayed DUA1663 0BAA03 Getting Started 3 9 Main Menu The Main Menu screen is illustrated below 3Com SuperStack II Main Menu EATER MANAGEMENT iR ACCESS LEVELS P A TUP 1 TWARE UPGRADE 1 uHngaouuuctu Figure 3 4 Main Menu Logoff DUA1663 0BAA03 If you are using the management facility for the first time we suggest that you Set up logons for any other users and assign each user an appropriate security level See Local Security on page 3 18 Assign new passwords for the default users See Edit User on page 3 21 To carry out a particular management task scroll to the relevant option and press Return The remaining sections of this chapter describe the various Main Menu options If you have finished using the facility select the Logoff option from the bottom of the main menu If you accessed the facility using a Telnet session or modem connection the connection will be closed automatically CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE Auto Logout There is a built in security timeout on the VT100 interface If you do not press any keys for three minutes the management facility will warn you that the inactivity timer is about to expire If you do not press a key within 1
23. program and associated reference materials 3Com makes no warranty that its software products will work in combination with any hardware or applications software products provided by third parties that the operation of the software products will be uninterrupted or error free or that all defects in the software products will be corrected For any third party products listed in the 3Com software product documentation or specifications as being compatible 3Com will make reasonable efforts to provide compatibility except where the non compatibility is caused by a bug or defect in the third party s product STANDARD WARRANTY SERVICE Standard warranty service for hardware products may be obtained by delivering the defective product accompanied by a copy of the dated proof of purchase to 3Com s Corporate Service Center or to an Authorized 3Com Service Center during the applicable warranty period Standard warranty service for software products may be obtained by telephoning 3Com s Corporate Service Center or an Authorized 3Com Service Center within the warranty period Products returned to 3Com s Corporate Service Center must be pre authorized by 3Com with a Return Material Authorization RMA number marked on the outside of the package and sent prepaid insured and packaged appropriately for safe shipment The repaired or replaced item will be shipped to Customer at 3Com s expense not later than thirty 30 days after receipt by 3Com
24. stack s IP parameters before the SNMP manager can communicate with the stack To do this perform the following steps 1 Connect a VT100 terminal configured to 9600 baud character size 8 stop bit 1 parity none to the Module s serial port 2 Log on to system see Logon on page 3 7 3 Select Management Setup from the Main Menu See Main Menu on page 3 9 4 Usethe Management Setup screen see Setup on page 3 10 to enter the IP parameter details 5 Reset see Reset on page 3 48 the Module You can now begin managing the stack with the SNMP manager Using Telnet Any Telnet facility that emulates a VT100 terminal should be able to communicate with the Module over the network Up to three active Telnet sessions can access the Module concurrently If a connection to a Telnet session is not closed but is lost inadvertently the connection will be closed by the Module after between 2 and 3 minutes of inactivity DUA1663 0BAA03 Managing over the Network 2 11 To set up Telnet communications you first need to connect to the Module using serial port access and enter certain parameters If you wish to use the VT100 interface to set up parameters including trap addresses perform the following steps Connect a VT100 terminal or emulator to the serial port and logon using the VT100 interface as described in Getting Started on page 3 6 Display the Setup screen Enter the Device IP Address and Device SubNet Mask of the
25. stand by port When the pair is operating normally the main port carries data to and from the segment attached to the port However if the Module detects a loss of link link test pulse for twisted pair medium or loss of light idle signal for fiber optic medium this main port is disabled and the stand by port takes over To keep you informed of what is happening on the network an event or trap will be sent to the Network Manager informing you that a main port has been disabled and a stand by port has taken over If you then rectify the fault on the main port or the fault clears the operation will switch back automatically to the main port It is important to ensure that the unit with the standby port has the hardware switch see Figure 2 1 in the correct position that is in the disabled on boot position If you are unsure of how to do this consult the guide that came with the Hub 10 unit Setting the switch correctly will avoid creating a loop when the power is first applied The Module will re configure the ports after power up 3 30 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE The Resilience feature is available from VT100 Transcend or another SNMP Manager Details of how to use the Port Resilience screen are given in Port Resilience on page 3 39 The management facility can only recognize loss of link light on a local p gt port Suitable application of an alarm can activate the resilience feature If a port is re
26. you are managing Check with your network administrator if you are unsure If you change this field reset the Module to effect the change If you require more information about SLIP read the Internet Activities Board document RFC 155 SLIP SubNet Mask Text Field Enter a suitable subnet mask For a class C address 255 255 255 0 the default setting is suitable Check with your network administrator if you are unsure If you change this field reset the Module to effect the change see Serial Port Setup on page 3 15 gt If you are using SLIP ensure that Flow Control is not set to XON XOFF BootP Select Choice Field Enabled Disabled When enabled BootP allows you to download the IP address the SubNet Mask and the Router IP address from a BootP server on your network When operative BootP checks that a valid IP address is not installed before sending out requests for the data It will keep on sending requests for data until one of three conditions is satisfied a BootP is disabled avalid BootP reply is received or you enter the address manually gt When the IP parameters have been received the Module will reset automatically No management commands are possible while the module reboots and self tests The following four fields are used for IPX addressing IPX Network Text Field This field shows the address of the network for this protocol This address is learned automatically from the local IPX router o
27. 0 seconds the timer will expire and the screen will be locked Any displayed statistics will continue to be updated however When you next press any key the display changes to the Auto Logout screen This screen is shown below 3Com SuperStack II Auto Logout User Name security Password Auto Logout in Progress Re enter Password OK CANCEL Figure 3 5 Auto Logout Screen The Auto Logout screen requests you to enter your password again If the password is correctly entered the screen that was active when the timer expired is re displayed If you make a mistake in entering your password you will be returned to the Logon screen Setup You use the Setup screen to configure IP IPX and SLIP parameters for the stack This screen also provides access to other screens for you to set up traps and serial port parameters DUA1663 0BAA03 3Com SuperStac k II Setup Device IP Address MAC Address 123 248 123 12 SLIP Address 08004E098765 192 168 101 1 Device SubNet Mask FFFF0000 SLIP SubNet Mask 255 255 255 0 Default Router I0 0 0 0 BootP Select Enabled 9 IPX Network Node Status Data Link Protocol 00000000 08004E098765 Enabled Ethernet 802 3 00000000 08004E098765 Enabled Ethernet_802 2 00000000 08004E098765 Enabled Ethernet II 00000000 08004E098765 Enabled Ethernet_SNAP OK SETUP TRAPS SERIAL P
28. 15 Serial Port Setup Screen EDIT USER B 3 17 User Access Level Menu Errors 10000 Packets R 3 26 Repeater Statistics Errors 10000 Packets R 3 31 Unit Statistics Errors 10000 Packets R 3 35 Port Statistics FAULT LOG B 3 45 Status Menu Fault Number R 3 47 Fault Log FCS Errors R 3 26 Repeater Statistics FCS Errors R 3 31 Unit Statistics FCS Errors R 3 35 Port Statistics Filename E 3 50 Software Upgrade Flow Control C 3 15 Serial Port Setup Screen Good Frames R 3 26 Repeater Statistics Good Frames R 3 31 Unit Statistics Good Frames R 3 35 Port Statistics Good Octets R 3 26 Repeater Statistics Good Octets R 3 31 Unit Statistics Good Octets R 3 35 Port Statistics Hardware Version R 3 45 Status Screen INITIALIZE B 3 9 Main Menu IP or IPX Address for traps E 3 13 Setup Traps Screen IPX Network E 3 10 Setup Screen Last Reset Type R 3 45 Status Screen Last Source Address R 3 35 Port Statistics Late Events R 3 26 Repeater Statistics DUA1663 0BAA03 4 APPENDIX F INDEX OF MANAGEMENT ACTIONS AND DATA Parameter Key Page Screen Late Events 3 31 Unit Statistics Late Events 3 35 Port Statistics Link Pulse 3 36 Port Setup Link State 3 36 Port Setup Link State 3 39 Port Resilience LOCAL SECURITY 3 17 User Access Level Menu LOGOFF 3 9 Main Menu Lost Links 3 36 Port Setup MAIN MENU 3 17 User Access Level Menu MAC Address internal port 3 10 Setup Screen Main Port 3 28 Repeater Resilience Main Port ID 3 39 Port Resilience
29. 1663 0BAA03 C 4 APPENDIX C TROUBLESHOOTING DUA1663 0BAA03 STATISTICS oot hee PD This appendix lists the terms that are used in the Repeater Statistics Unit Statistics and Port Statistics screens There are suggestions for courses of action to take if required In general if repeater statistics indicate a problem try to isolate the source of the problem by examining unit and then port statistics Alignment Errors An alignment error occurs if the last byte of the frame is not received whole The number of alignment errors should be a very small percentage of the total data traffic Alignment errors are likely to be caused by a fault at the transmitting device Check the transceiver or adapter card of the device connected to the port that is the source of the problem If the card appears to be operating correctly check the cable and cable connections for breaks or damage Auto Partitions The number of times the port or ports have automatically partitioned Autopartitioning occurs when excessive more than 64 consecutive collisions occur at a port Autopartitioned ports are automatically reconnected when the fault is rectified Frequent partitions can indicate that there is a problem in the cabling between two units or a unit and an attached device It can also indicate that a device is faulty Check the cabling at both the stack and the devices connected to it Bandwidth Used 96 The percentage bandwi
30. IPX address of each network manager that you want to receive traps 4 Logoff from the VT100 interface 5 Reset the Module see Reset on page 3 48 to bring the IP parameters into operation You can now start a management session from the SNMP workstation DUA1663 0BAA03 3 USING THE VT100 2 MANAGEMENT INTERFACE Introduction This chapter starts with an overview of the VT100 user interface It describes the screens and how to navigate between them A map of all the screens is given to help you to access any chosen screen The remainder of this chapter is divided into sections that cover management tasks These sections broadly follow the division suggested by the main menu Each screen is described and the access level needed to access the screen is indicated Access levels are a security measure and are described in Logon on page 3 7 User Interface We suggest you read through this section before you use the facility for the first time After you should only need it for reference Screens An example of a VT100 management screen is shown below 3 2 CHAPTER 3 USING THE MANAGEMENT INTERFACE 3Com SuperStack II Port Statistics CLEAR COUNTERS CANCEL Unit ID 2 Port ID 11 Media Type Twisted Pair 10BaseT Good Frames 345 FCS Errors Good Octets 12398 Alignment Errors Unicast Frames 34560 Short Events Multicast Frames 7 Too Long Frames Broadcast Fra
31. ORT CANCEL Figure 3 6 Setup Screen DUA1663 0BAA03 MAC Address Read only The MAC address of the Module This cannot be changed Device IP Address Text Field If using IP you will need to enter a unique IP address for the stack See IP Addresses on page A 5 You may use the BootP facility see below if your network has a BootP server or enter it manually If you do not know the address consult your network administrator If you change the device IP address you must reset the Module to effect the change Device SubNet Mask Text Field If using IP enter a suitable subnet mask BootP will do this automatically For a class B IP address 255 255 0 0 is suitable Check with your network administrator if you are unsure If you change this field reset the Module to effect the change Default Router Text Field If necessary enter the IP address of the default router on your network BootP will do this automatically If you change this field reset the Module to effect the change SLIP Address Text Field SLIP Serial Line Internet Protocol allows IP to run over the serial port instead of the network SLIP allows you to use out of band Telnet or SNMP management either locally or remotely via a modem SLIP will operate with a SLIP address of 192 168 101 1 3 12 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE If you enter a SLIP address it should show a different network from the stack that
32. R gives you specific legal rights which may vary from state to state PERFORMANCE AS BEEN ADVISE NATION DISC ER S OR ANY THIRD D ATTEMPTS TO REPAIR OR FIRE LIGHT CLUDING PRICE PAID AT 3COM S RE IN LIEU OF ALL OTHER LOSE THAT THE ING OR OTHER EGLIGENCE PUNITIVE DAMAGES OF ER FINANCIAL LOSS ARISING OUT OF OR IN FAILURE OR INTERRUPTION D OF THE POSSIBILITY OF e limitation of incidental or consequential usions may not apply to you This warranty GOVERNING LAW This Limited Warranty shall be governed by the laws of the state of California 3Com Corporation 5400 Bayfront Plaza Santa Clara CA 95052 8145 408 764 5000
33. RMATION CABLE PIN OUTS AND PROTOCOLS Standards The SuperStack Il Hub 10 Management Module and the Advanced RMON Module are designed to meet the following standards Safety UL1950 EN 60950 CSA 22 2 950 ECMA 97 EMC CSA C108 8 M1983 Class A FCC Part 15 Class A IEC 801 parts 2 5 EN55022 Class B EN50082 1 Environmental IEC 68 to 3Com Schedule Operational OC to 50 BABT Approval For UK Users only The SuperStack Il Hub 10 units fitted with a Management Module or Adavnced RMON Module are covered by Oftel General Approval NS G 12345 J 100003 for indirect connection to a public telecommunications system This can be achieved using the serial port and an approved modem 2 APPENDIX A TECHNICAL INFORMATION CABLE PIN OUTS AND PROTOCOLS Electrical These figures apply to the device listed when fitted with a SuperStack II Hub 10 Management Module or SuperStack II Hub 10 Advanced RMON Module Power Consumption 3C16665A 46 VA 3C16670A 28 3C16671A 34 3C16672A 34 Power Dissipation 3C16665A 156 BTU hr 3C16670A 94 BTU hr 3C16671A 115 BTU hr 3C16672A 115 BTU hr Processor and Memory Management Module Flash EPROM RAM Processor Advanced RMON Module Flash EPROM RAM Processor DUA1663 0BAA03 Cable Pin Outs A 3 Cable Pin Outs This section shows the pin outs for the Management Terminal cable used to connect a terminal PC or modem to the serial p
34. SNMP network manager may automatically set up the trap destination addresses for you Check the documentation accompanying the product You access the Trap Setup screen by selecting the SETUP TRAPS button on the Setup screen 3 14 CHAPTER 3 USING THE MANAGEMENT INTERFACE 3Com SuperStack II Trap Setup IP or IPX Address Community String Throttle milli secs 123 123 40 130 public 0 123 123 40 130 public 0 aabbccdd 112233445566 public 100 123 123 36 44 security 200 aabbccdd 112233445566 public 1 1500 aabbccdd 112233445566 public 100 0 0 0 0 public 100 0 0 0 0 l security 100 OK CANCEL Figure 3 7 Trap Setup Screen IP or IPX Address Text Field Enter the IP or IPX address of the remote network management station to which SNMP traps should be sent Community String Text Field The community string allows a very simple method of authentication between the Module and the remote network manager You can enter any text string of up to 32 characters case sensitivel The remote network manager must be configured to look for traps sent with this community string otherwise it will ignore the traps The default community string is public Throttle Text Field To prevent a remote network manager receiving too many traps at once you can configure the stack to transmit traps with a delay between each trap If several traps are g
35. U S and Canada 800 876 3266 option 2 408 764 7120 Europe 31 30 60 29900 option 5 44 1442 275822 Outside Europe U S and Canada 1 408 492 1790 1 408 764 7290 05 17 96 DUA1663 0BAA03 6 APPENDIX B TECHNICAL SUPPORT DUA1663 0BAA03 TROUBLESHOOTING In the main chapters we have indicated where problems can occur when using the management facility This appendix collects together this troubleshooting information It will help you to determine the cause of a problem should one arise and to correct the problem It lists symptoms that may appear and suggests what actions to take to track down and resolve the problem The initial Main Banner screen will not display Check that your terminal or terminal emulator is correctly configured to operate as a VT100 terminal For serial port access check you have performed the wake up procedure correctly by pressing Return Return Check the settings on your terminal or emulator The parity must set to none the stop bit 1 and the character size 8 The management facility s autoconfiguration works only with speeds from 1200 to 9600 baud Possibly autoconfiguration is disabled If you still cannot access the device perform a reset by pressing the Reset switch at the rear of the Module once Now check the MGMT LED on the front of the management unit unit 1 The LED should be green If it is red and remains red after you perform a reset a numbe
36. User Screen Edit User Screen Repeater Statistics Unit Statistics Port Statistics F 8 APPENDIX F INDEX OF MANAGEMENT ACTIONS AND DATA DUA1663 0BAA03 INDEX Numerics 3Com Bulletin Board Service 3ComBBS B 1 3Com sales offices B 4 3ComFacts B 3 A access levels 3 20 manager 3 18 monitor 3 18 secure monitor 3 18 security 3 19 specialist 3 19 access method 3 18 active port 3 31 active power supply 3 34 alarm action E 10 alarms E 7 E 11 system E 11 alignment errors D 1 APPLY button 3 43 Ask3Com B 2 auditlog E 12 auto logout screen 3 10 auto partitions D 1 autoconfiguration 2 8 3 6 autopartitioning 3 39 bulletin board service B 1 button APPLY 3 43 CANCEL 3 3 OK 3 3 reset 2 7 buttons 3 3 B bandwidth used D 1 blanking plate Hub 10 unit 2 2 boot software version 3 46 BootP 3 12 BootP select 3 12 broadcast frames D 1 cable pin outs A 3 CANCEL button 3 3 char size serial port setup 3 16 choice fields 3 3 community SNMP access 3 19 community string changing 3 21 entering 3 21 network manager 3 14 trap 3 14 CompuServe B 2 configure LED 2 7 connection type serial port 3 15 control keys 3 4 create user screen 3 20 D data link protocol 3 13 data rate mismatches D 2 DCD control 3 15 default passwords 3 8 default router 3 11 default users 3 8 default values description of 3 2 delete users screen 3 21 device IP address 3 11 device subnet ma
37. al For more information contact your supplier 2 12 CHAPTER 2 INSTALLATION AND SETUP FOR MANAGEMENT To manage the stack with an SNMP network manager from another vendor you need to use the appropriate MIB file The concise SNMP MIB file for the SuperStack Il Hub 10 Series is available free on the Ask3Com bulletin board see Appendix B Refer to the manual accompanying your chosen network manager for details of how to proceed If you wish to set up SNMP traps in some cases you may have to configure the Module locally 3Com network managers such as Transcend WorkGroup Manager for Windows can automatically configure the Module to send traps to them To set up SNMP communications you first need to connect to the Module using serial port access and enter the IP configuration of the stack Use the VT100 interface to set up parameters including trap addresses Perform the following steps 1 Connect a VT100 terminal or emulator to the serial port and logon using the VT100 interface Refer to Getting Started on page 3 6 for details of how to do this 2 Display the Setup screen see Setup on page 3 10 If using IP enter the Device IP Address and Device SubNet Mask of the stack and the Default Router address if necessary or use the BootP facility see Using Telnet on page 2 10 If using IPX the stack will have an address automatically allocated 3 Display the Trap Setup screen see Trap Setup on page 3 13 Enter the IP or
38. ares kits 90 days If a product does not operate as warranted during the applicable the warranty period 3Com shall at its expense correct any such defect by repairing the defective product or part or at its option by delivering to Customer an equivalent product or part to replace the defective item All products that are replaced will become the property of 3Com Replacement products may be new or reconditioned Any replaced or repaired product or part has a ninety 90 day warranty or the remainder of the initial warranty period whichever is longer 3Com shall not be responsible for any software firmware information or memory data of Customer contained in stored on or integrated with any products returned to 3Com pursuant to any warranty SOFTWARE 3Com warrants that the software programs licensed from it will perform in substantial conformance to the program specifications therefor for a period of ninety 90 days from the date of purchase from 3Com or its Authorized Reseller 3Com warrants the magnetic media containing software against failure during the warranty period No updates are provided 3Com s sole obligation hereunder shall be at 3Com s discretion to refund the purchase price paid by Customer for any defective software products or to replace any defective media with software which substantially conforms to 3Com s applicable published specifications Customer assumes responsibility for the selection of the appropriate applications
39. ase repeater ports will assume that there is a connection and light the appropriate LEDs even if there is no connection You cannot disable the link pulse for a port that is the main or standby port of a resilient link pair Link State Read only This field shows the connection state of each port Table 3 5 Link States Link State Description Other The link state of this port cannot be recognized for Coax and AUI ports Unknown The port is initializing Its actual state is not yet known Available The port is operating normally Not Available The link has been lost for TOBASE T and 10BASE FL ports Lost Links Read only The number of times the link has been lost since the Module was last reset Partition State Read only This field shows whether or not the port has autopartitioned If it has check the cabling at both the unit and any devices connected to that port Port Resilience p Resilient Links may be set up ONLY on Hub 10 and FMS II Units DUA1663 0BAA03 3 40 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE The Port Resilience screen allows you to create and delete a resilient link pair main link and standby link and to change the configuration of an existing resilient link pair There are three steps to setting up a resilient pair 1 Disconnect the unit which is to provide the standby ports from the network We make this recommendation even though it is possible to set up links whilst still
40. ate is determined by the setting of the Disable on Boot switch which is located behind the blanking plate or rear cover of the unit see Figure 2 1 on page 2 3 a All Ports Disabled The unit boots up with all ports disabled including AUI and transceiver module ports For an existing unit or replacement unit of the same type the management facility then enables each port whose Port State in the Port Setup screen is currently set to Enabled p gt At power up there is a period of about 1 second during which the AUI and transceiver ports are not disabled w All Ports Enabled The unit boots up with all ports enabled including AUI and transceiver module ports For an existing unit or replacement unit of the same type the management facility then disables each port whose Port State in the Port Setup screen is currently set to Disabled Active Power Supply This field indicates which power supply is currently active a Internal the built in power supply is active a External The redundant backup power supply is active gt Only Hub 10 and FMS Il units support an external redundant backup power supply You must NOT connect both the redundant backup power supply and mains power to a unit at the same time Power Supply Status This field indicates the status of the active power supply a OK The power supply is functioning correctly a FAULT Failure of part of the redundant backup power supply has been detected Contact y
41. b 10 and FMS units You access the Repeater Resilience screen from the Repeater Management screen by selecting management level Repeater then actuating the RESILIENCE button The screen shows all the resilient link pairs that are currently configured for the repeater DUA1663 0BAA03 DUA1663 0BAA03 Repeater Management 3 29 Resilient Links are only available on twisted pair and fiber optic media because the link test pulse or the idle signal is used to decide whether the link is broken and the standby link should be activated There is no such link signal over coaxial media If you have not come across resilience in the networking field before you will find the following explanation helps When a link is broken all communication between devices on each side of the link is lost It could be very inconvenient for a manager physically to reinstate the network immediately Important traffic might be lost If a spare link could pick up where the broken link left off the network would appear to function normally to the outside observer At worst a few frames would be corrupted or lost This is the concept of resilience as applied to ports One port is on stand by waiting to take over if the main port fails You may set up 16 resilient pairs of ports on one chassis A pair may be on the same module or on different modules Each port in the pair can be attached to different media Each resilient pair consists of a main port and a
42. c KK S U Up PEE RR S T AAAAAA C KK S U U PPP E RR S T AC KK S U UP E RR 9 T A C K K S SU UP E RR SS T Ay QC KE IK SS UUUU P EEEEE R R 658 T A CC K Press Enter to Continue OK Figure 3 2 Main Banner Screen The main banner screen has a concealed field which can be revealed using an SNMP manager by entering text in the sysName MIB object This field is convenient for defining the Module you are accessing DUA1663 0BAA03 Logon Getting Started 3 7 If you cannot see the main banner or it displays incorrectly it may be that Your terminal is not configured as a VT100 terminal Check that your terminal is setup to operate with acceptable parameters for the serial port see the section Serial Port Setup on page 3 15 The autoconfigure option will only operate if your terminal uses correct parameters for the Module The maximum speed is 9600 baud Autoconfigure is disabled If you are unable to obtain the banner screen it is possible that the autoconfigure option has been disabled Check the configuration of the termindl If you cannot resolve the problem refer to Appendix C for further troubleshooting information Once the Main Banner screen is displayed press Return to display the Logon screen You must enter your user name and password to be able to use the management facility The Logon screen is shown below 3Com SuperStack II Logon User Name Passwo
43. ceiving a number of errors an alarm set on the error counter can trigger change over to its resilient partner See Appendix E WARNING Security may be set up at the same time as Resilience but A only using a network manager 3Com SuperStack II Repeater Resilienc MAIN STANDBY Pair Active Pair Unit Port Unit Port State Port Enable 2 3 2 4 Active Main Enabled OK CANCI p Figure 3 18 Repeater Resilience Screen All the fields are read only To change the configuration of a resilient link select the link then select OK The Port Resilience screen showing details of the chosen link will be displayed MAIN Unit This field shows the identifier of the unit that the main port belongs to MAIN Port This field shows the identifier of the main port STANDBY Unit This field shows the identifier of the unit that the standby port belongs to DUA1663 0BAA03 Repeater Management 3 31 STANDBY Port This field shows the identifier of the standby port Pair State This field shows the state of the resilient link pair Possible values are a Active The link pair is enabled and either the main port or the standby port is capable of carrying traffic Notin use The link pair is disabled Both Failed Although the link pair is correctly configured both links have failed a Invalid The state of the repeater has changed since the link pair was con
44. ck Il Hub 10 Management Module 1 15 A stack can consist of up to eight units linked together with hub expansion cables 3C625 A stack behaves as a single Ethernet repeater Only one Management Module or Advanced RMON Module is needed to manage the stack If your stack consists of mixed units the LinkBuilder FMS 10BTi and 10BT units may ONLY occupy positions 2 through 4 The Management Module or Advanced RMON Module should be installed in the top or bottom unit The unit with the module installed is always designated unit 1 in the stack the next connected unit is unit 2 and so on The Module records configuration information such as resilient link settings for all the units in the stack Some SNMP network management applications assume that unit 1 is at the top of the stack If you install the module in the bottom unit the stack may be depicted by the application in reverse order to the actual arrangement of units The narrower FMS units if used should be positioned at the top of the stack If you have a stack containing both a LinkBuilder 10BTi unit and a Hub 10 unit fitted with a Module the Module will manage the stack The management facilities of the 10BTi unit will be disabled SuperStack Hub 10 Management Module DUA1663 0BAA03 The SuperStack Il Hub 10 Management Module 3C166304 can be installed in the following units 3C16665A SuperStack Hub 10 6 Port Fiber 3C16670A SuperStack Hub 10 12 Port TP
45. connected to avoid loops being formed accidently 2 Setup the pair from the Repeater Management screen Select management level Port Specify the unit and port of the main link Actuate the RESILIENCE button to display the Port Resilience screen Now you can specify the standby unit and port See the field descriptions below If the port you intended to use as standby is not shown in the list box the unit which contains the port is not set for Disable on Boot Change the switch position and reset the unit 3 Reconnect the unit with the standby ports on it to the network To delete or change the configuration of a resilient link pair do one of the following m From the Repeater Resilience screen select the resilient link pair you want to configure then actuate the OK button The Port Resilience screen will be displayed m From the Repeater Management screen select management level Port then specify either the main port s or the standby port s unit and port ID Actuate the RESILIENCE button to display the Port Resilience screen The Port Resilience screen is illustrated below DUA1663 0BAA03 Repeater Management 3 41 3Com SuperStack II Port Resilience Main Unit ID 1 Standby Links Available Main Port ID 5 Unit ID Port ID Media Type Fiber 2 1 Link State Available 3 1 2 2 Standby Unit ID 3 2 3 Standby Port ID 4 2 4 Media Type Twisted Pair 3 4 Link State Available A 5 3 12 4 2 Pair S
46. d and update the number of occurrences of a particular event through a port module repeater or on the network The management facility reads the counters it needs for the output processes the information and displays the result The counter may be associated with a port or a module or a repeater or even a chassis It can be counting any recurring event typical examples are traffic collisions and FCS errors When a port is disabled some of the statistics counters associated with it may no longer be updated When using the counters it is better to employ differences between values rather than spot values By using values at fixed time intervals the rates of change of the counters can be derived The time intervals can be as short or as long as you find convenient These rates will be more meaningful than spot values and may be compared to provide more useful data There is a sound reason for using differences The counters cannot be infinite They will roll over return to zero when they reach their limit Thus a low value may or may not be truly representing the situation A negative difference indicates that roll over has occurred You can be more sure of what has occurred by changing either shortening or lengthening the time interval and comparing the results Counters DUA1663 0BAA03 and RMON Alarms The Module supports the RMON alarm Alarms can be assigned by Transcend or any SNMP network manager to monitor any counter
47. d only for SNMP access The remote network manager must be configured to use the same community string Delete Users You access the Delete Users screen by actuating the DELETE USERS button on the Security screen This option is available only for users with security access level 3Com SuperStack II Delete Users User List monitor manager security bob sue george DELETE USERS CANCEL Figure 3 12 Delete Users Screen Edit User DUA1663 0BAA03 Select the users to delete from the List Box using the spacebar then move the cursor to the DELETE USERS button and press Return You cannot delete the current user in other words the user name you used to logon or any of the default users monitor manager or security You access the Edit User screen by actuating the EDIT USER button on the Security screen Use this screen to change your own password or community string 3 22 CHAPTER 3 USING THE MANAGEMENT INTERFACE No user can directly change another user s password or community string If you are a system administrator and wish to change another user s password you will need to login as the other user 3Com SuperStack II Edit User User Name security Old Password New Password Confirm Password Community String security OK CANCEL Figure 3 13 Edit User Screen The opt
48. daily records you will see trends emerging and soon notice problems arising before they cause major network faults Statistics can be useful to help you get the best out of your network Setup Setup allows you to configure various parameters for the repeater and individual units and ports In many cases the default settings are suitable for typical operation but it may be a advisable to disable unused ports to prevent unauthorized access to the network Resilience You can configure resilient links to protect critical communication links against failure You select the management level and management activity from the Repeater Management screen The appropriate screen is then displayed for example the Port Resilience screen Repeater Management Screen The fields on the Repeater Management screen change slightly depending on the selected management level Only relevant fields are displayed The displayed fields will not change until you move the cursor from the Management Level field The flow chart shows the fields you fill in depending on the chosen level of management 3 24 CHAPTER 3 USING THE MANAGEMENT INTERFACE Toggle to chosen level space bar Choose from buttons at base of screen Enter Port ID Figure 3 14 Using The Repeater Management Screen The example screen below shows the screen with port level management selected 3Com SuperStack II Repeater Manage
49. ding qualifier new value of item There is a limit of 40 records on the number of changes stored The oldest records are overwritten first DUA1663 0BAA03 F INDEX OF MANAGEMENT ACTIONS AND DATA This index consists of an alphabetical listing of field names taken from the VT100 screens It relates the field names to the page in the user guide where you can find a description of the use of the field and the title of the screen containing it Also it indicates the type of field Use the standard subject index which follows to look up general topics The Key column contains a code letter for the type of parameter presented The meanings of these code letters is tabulated below The Page column gives the page number in the current user guide where the use of the parameter is described The Screen column gives the title of the screen where the parameter appears Code letter Meaning go Button to next screen Choose from toggle list Direct action button Enter text Read only data Select from list Parameter Key Page Screen Access Level C 3 20 Create Users Screen Active Port C 3 28 Repeater Resilience Active Port C 3 39 Port Resilience Active Power Supply R 3 83 Unit Setup 2 APPENDIX F INDEX OF MANAGEMENT ACTIONS AND DATA Parameter Key Page Screen Alignment Errors R 3 26 Repeater Statistics Alignment Errors R 3 31 Unit Statistics Alignment Errors R 3 35 Port Statistics APPLY D
50. dth used This statistic gives an indication of the general traffic level of the network Broadcast Frames The total number of broadcast frames seen at the repeater unit or port Broadcast frames are frames that are addressed to all MAC addresses that is all devices on the network The total number of broadcast frames will normally be a small percentage of the APPENDIX D STATISTICS value seen for unicast frames A high level of broadcast frames can adversely affect network performance Data Rate Mismatches The number of frames received by the repeater unit or port whose timing was outside the permitted frequency range This may indicate non compliant or faulty devices on your network Errors 10000 Packets The number of total errors per 10 000 packets received by the repeater unit or port This statistic gives an indication of the general health of the network A sudden significant change in the value of this parameter usually indicates a problem developing FCS Errors Frame Check Sequence FCS errors indicate that frames of data are being corrupted FCS errors are counted when incoming frames fail the Cyclic Redundancy Check CRC test The number of FCS errors should be a very small percentage of the total data traffic Check the transceiver or adapter card of the device connected to the port that is the source of the problem If the card appears to be operating correctly check the cable and cable connections for breaks or damag
51. e Occasionally the problem may be caused by interference from other cables or machinery Good Frames This is the total number of frames with no errors seen by the repeater unit or port Examining this statistic regularly can help you monitor your network s overall performance Look for unusual increases in traffic rate This may indicate a potential problem or help you decide if a bridge is required on your network Good Octets This field shows the total number of octets bytes received as part of good frames seen at the repeater unit or port The total includes the header data and CRC octets of each frame The Good Octets value allows you to calculate the throughput in terms of bytes per second and the average frame size on your network Late Events A late Event is an out of window collision which may occur if you have an 802 3 LAN that exceeds the maximum size as defined by IEEE A Late Event is also counted as a collision DUA1663 0BAA03 DUA1663 0BAA03 Multicast Frames This is the total number of multicast frames seen at the repeater hub or port A multicast frame is one that is addressed to a group of MAC addresses that is several devices on the network The total number of multicast frames will normally be a small percentage of the value seen for unicast frames A high level of multicast frames can adversely affect network performance Runt Frames Runt frames are frames that are smaller than the minimum frame size def
52. e Hub 10 Module as ordered 1x M2 5x25 cross head screw and crinkle washer If any of these items are missing please contact your supplier Disconnecting the Unit 1 Disconnect all the units in the stack from the mains power supply Warn any network users connected to the repeater before you power down the units Disconnect the unit into which you will fit the module from the other units in the stack If necessary move the unit so that you have sufficient space to work DUA1663 0BAA03 Inserting the Hub 10 Module 2 3 Removing the Blanking Plate from the Hub 10 Unit 1 Remove the Management Module blanking plate from the rear panel of the unit by unscrewing the three retaining screws see Figure 2 1 Keep two of the screws for use with the Module Do not remove any of the screws around the connector ports Disable on boot switch ee ems Retaining Screws Figure 2 1 Hub 10 Rear View 2 Keep the blanking plate and the remaining original screw in a safe place If you remove the Module you must replace the original blanking plate to aid the circulation of cooling air and prevent the entry of dust and debris into the unit Inserting the Hub 10 Module A CAUTION Before you install the Module set the position of the Disable on Boot switch on the Hub 10 unit If you want to set up resilient links change the position from the factory default enable all ports
53. e filename you will download will reflect the management product you have installed The protocol used for downloading is TFTP running over UDP IP or IPX and will only work over the network not via the serial port To perform the download a remote TFTP server must be set up File Name Text Field Enter the name of the file that contains the software image to be downloaded to the Module You will be prompted with a file format appropriate to the Module This will be FMAxx xxx slx for the Management Module or FMRxx xx slx for the Advanced RMON Module You will not be allowed to download the DUA1663 0BAA03 DUA1663 0BAA03 Software Upgrade 3 51 wrong image You must place the image file where it is accessible to the TFTP load request Check with your system administrator if you are unsure where to place the image file You may wish to download the file from another directory If so you must give the full path to the file and the filename using a maximum of 30 characters Server Address Text Field Enter the IP or IPX address of the device where the software file containing the image of the Module facility can be found OK Button Select this button to start the software download When the download is being performed the MGMT LED will flash green and the screen will be locked When the download is complete the Module will be reset 3 52 CHAPTER 3 USING THE MANAGEMENT INTERFACE DUA1663 0BAA03 TECHNICAL INFO
54. e statistics counters on the repeater to zero Clearing the repeater counters affects all users and clears the counters for all the units and ports on this repeater CANCEL Button Select this button to go back to the Repeater Management screen without clearing the counters Repeater Setup You access the Repeater Setup screen from the Repeater Management screen by selecting management level Repeater then actuating the SETUP button The Repeater Setup screen shows the current configuration of the repeater stack DUA1663 0BAA03 3 28 CHAPTER 3 USING THE MANAGEMENT INTERFACE 3Com SuperStack II Repeater Setup Units Available Unit Capacity 8 Total Ports Partitioned 0 Repeater Health Operational CANCEL Figure 3 17 Repeater Setup Screen Units Available Read only This field shows how many units are currently installed in the repeater stack Unit Capacity Read only This shows the maximum number of units that can be supported by this stack in this case eight Total Ports Partitioned Read only This field shows the number of partitioned ports Repeater Health Read only If all system tests have been passed on start up or during a self test this field will show Operational If the field is blank or displays any other message check the Fault Log screen for further information See Fault Log on page 3 47 Repeater Resilience p Resilient Links can be set up ONLY on Hu
55. e the stack via a modem DCD Control and DSR Control will be enabled Otherwise leave this parameter at the default setting DCD Control Choice Field Enabled Disabled Check in the manual for your modem if you are not sure of the correct setting 3 16 CHAPTER 3 USING THE MANAGEMENT INTERFACE DSR Control Choice Field Enabled Disabled If DSR Control is enabled the management port will be logged out if DSR is deasserted Check in the manual for your modem if you are not sure of the correct setting Flow Control Choice Field XON XOFF NONE RTS CTS Unidirectional RTS CTS Bidirectional Select the flow control option that corresponds with your terminal or modem Auto Config Choice Field Enabled Disabled The Module can automatically configure the terminal speed to work with your VT100 terminal Note that the setting made by automatic configuration is not displayed on the screen The displayed setting is that which will be adopted when automatic configuration is next disabled Set this field to Enabled if you require automatic configuration To start automatic configuration detecting and setting the correct speed the wake up procedure typing Return Return must be performed Speed Choice Field 1200 2400 4800 9600 Select the baud rate for your terminal or modem Check in the manual for your terminal or modem if you are not sure of the correct setting Char Size 8 Parity NONE and S
56. elected CANCEL Button Move the cursor to this button and press Return to go back to the main menu Repeater Statistics You access the Repeater Statistics screen from the Repeater Management screen by selecting management level Repeater then actuating the STATISTICS button The statistics given are the aggregated counters for all the ports in all the units in the stack DUA1663 0BAA03 Repeater Management 3 27 3Com SuperStack II Repeater Statistics Good Frames 345 FCS Errors 10 Good Octets 123456 Alignment Errors 0 Short Events 0 Unicast Frames 34560 Too Long Frames 0 Multicast Frames 7 Very Long Events 1 Broadcast Frames 2 Data Rate Mismatches 0 Late Events 0 Transmit Collisions 0 Total Errors 11 Runt Frames 5 Errors 10000 Packets 0 AutoPartitions 0 Bandwidth Used 5 0 CLEAR COUNTERS CANCEL Figure 3 16 Repeater Statistics Screen The screen is updated every 3 seconds If the top limit of a counter 4294967295 is reached the counter will roll over reset to zero automatically After this event the individual figures may give a false impression of network conditions if taken in isolation All the fields are read only Refer to Appendix D for a detailed description of the statistics fields CLEAR COUNTERS Button This button is shown only for users with an access level of manager or higher Select this button and press Return to reset all th
57. ely 60 seconds after the unit is powered up for the first time You should never need to change the allocated address IP Addresses DUA1663 0BAA03 IP Internet Protocol addresses have the format n n n n where n is a decimal number between 0 and 255 An example IP address is 192 168 100 120 IP addresses are made up of two parts The first part 192 168 in the example identifies the network on which the device resides Network addresses are assigned by three organizations Depending on your location each organization assigns a globally unique network number to each network that wishes to connect to the Internet The second part 100 120 in the example identifies the device within the network Assigning unique device numbers is your organization s responsibility If you are unsure of the IP addresses allocated to you consult your network administrator If you do not have an Internet address see Obtaining a Network Number on page A 6 If you are the manager of a network that has no connections to the outside world you may not be aware of the network address If you are not using the IP protocol for anything other than network management you may use arbitrary addresses We suggest you use addresses in the series 192 168 100 Y where Y is a number between 1 and 254 Use 192 168 101 Y for the SLIP address 192 168 101 1 is the default setting Remember that no two devices on a network may have the same address If you later c
58. em To select a single item move the cursor using the arrow keys until the item is highlighted then press Return To select more than one item for each item move the cursor until the item is highlighted then press Space to select the item Pressing Space again deselects the item When all the desired items are selected press Return 3 4 CHAPTER 3 USING THE MANAGEMENT INTERFACE Special Keystrokes As well as the keystrokes described above there are several other keystrokes for controlling the VT100 interface These keystrokes allow you to move the cursor around the screen enter information and move from one screen to another Tab Moves the cursor from one field to the next Ctrl B Moves the cursor to the next button When you have finished entering or changing data Ctrl B is very useful for skipping over the remaining fields Ctrl P Returns you to the previous screen without actioning any inputs Ctrl R Refreshes the screen Ctrl K Displays a list of the possible keystrokes If you are using Telnet or a terminal emulation program you may find gt that some control keys do not operate or that they activate other functions The Windows terminal emulator uses Ctrl H as backwards deletion whereas others use it for backward cursor movement Consult the manual accompanying your Telnet or terminal emulation software before using the control keys DUA1663 0BAA03 User I
59. en or the Repeater Resilience screen Remote Poll The Remote Poll screen allows you to see if a remote device is responding by sending a message forcing a response from the target device This will determine if there is a path or a congested path between this device and other devices on the network To display the screen actuate the REMOTE POLL button on the Main Menu screen only available to users with manager access level or higher 3Com SuperStack II Remote Poll Target Address 11223344 112233445566 Round Trip Time 30 milli seconds 2 Router Hops This operation will poll the target device IP address format d d d d IPX address format AABBCCDD AABBCCDDEEFF POLL CANCEL Figure 3 24 Remote Poll Screen DUA1663 0BAA03 p Status 3 45 Target Address Text Field Enter the IP or IPX address of the device to poll Round Trip Time Read only This is the interval in milliseconds between the time the last frame was sent to the target device and the time a response was received by the Module If there is no response within a few seconds no reply is shown Also displayed will be the number of router hops and if set the time to live for the frame The Module can be configured to automatically poll several devices at regular intervals and report back to a management station if there is no response This facility is only available through SNMP management Status The S
60. enerated at once they will be transmitted with the specified delay between them The unit of throttle is one thousandth of a second The default value is 100 which gives a delay of one tenth of a second between each transmission If you set the throttle to 0 traps will be sent as soon as they are generated DUA1663 0BAA03 Serial Port Setup You can access the Serial Port Setup screen by actuating the SERIAL PORT button on the Setup screen 3Com SuperStack II Serial Port Connection Type 4 Local DCD Control Enabled DSR Control Disabled 9 Flow Control XON XOFF AutoConfig Disabled Speed 9600 Char Size 8 Parity 9 None Stop Bit 1 OK CANCEL Figure 3 8 Serial Port Setup Screen DUA1663 0BAA03 If you alter the serial port parameters and select OK you will terminate any existing session using the serial port Ensure that the connected equipment s serial port parameters are set to match the new configuration This will allow you to continue to access the management facility using the equipment after you change the serial port parameters If you change the serial port parameters with Auto Config already set to Enabled or if you change Auto Config to Enabled you will need to perform the wake up procedure see Main Banner on page 3 6 before communication is re established Connection Type Choice Field Local Remote Select Remote if you want to manag
61. er to use Examples of this include the AutoCalibrate feature which records the peak value of a network statistic over time and in a single operation automatically sets a threshold at 12096 of that peak value the Remote Poller feature which allows the hub to ping another device on the network and record the response time An RMON Alarm can be associated with that response time so that when the response time from the server is poor because of an overloaded server or faulty cable the hub can inform the network administrator automatically additional Actions on Event are also available when alarm thresholds are exceeded to automatically disable ports blip ports switch off and then back on or switch to a backup link The RMON capabilities of 3Com hubs can only be accessed through SNMP applications not through the serial interface or Telnet For more information about the details of managing 3Com devices using RMON see the user documentation for Transcend Network Management Applications for Windows and UNIX 4 APPENDIX E RMON AND ADVANCED MANAGEMENT The SuperStack Il Hub 10 RMON Implementation The following table summarizes the support in this product for the nine standard groups of RMON The table also specifies the configuration of the various groups after system initialization Table E 1 RMON Group Configurations Effect of Power Cycle on Group Initial Configuration Configuration Ethernet 1 session monitoring
62. erwise it will not be listed as a possible standby link This means that the Disable on Boot switch of the Hub 10 unit see Figure 2 1 on page 2 3 with the standby port must be set to Disable Refer to the unit s user manual for instructions on how to set the switch DUA1663 0BAA03 DUA1663 0BAA03 Repeater Management 3 43 Media Type Read only This field shows the media type for the standby port Refer to Table 3 4 on page 3 37 for the different media types Link State Read only This field shows the connection state of the standby port Refer to Table 3 5 on page 3 39 for the different states Pair State Read only This field shows the state of the currently active selected resilient pair if any Possible values are Active The link pair is enabled and either the main port or the standby port is capable of carrying traffic Notin use The link pair is disabled Both Failed Although the link pair is correctly configured both links have failed a Invalid The state of the repeater has changed since the link pair was configured and the link pair now does not conform to the resilient link rules see earlier in this section An example is where the Disable on Boot switch of the unit with the standby port has been changed to Enable Active Port Choice Field Main Standby Select the port you want to carry the traffic Pair Enable Choice Field Enabled Disabled Use this field to enable or disable
63. esentative The version number will be automatically updated when you download new software Boot Software Version This is the version number of software stored in the Boot PROMs on the Module Please make a note of this number in case you ever need to contact your technical support representative Fault Log Button Select to view the fault log DUA1663 0BAA03 Status 3 47 Fault Log The Fault Log screen displays read only information about the log which is updated whenever an abnormal condition is detected 3Com SuperStack II Fault Log Reset Count Time seconds Area Fault Number 230071456 300104 456366764 300024 This information is for internal 3Com use only You may be asked to quote the Area and Fault Number if reporting a problem to your supplier CANCEL Figure 3 26 Fault Log Screen Reset Count This field displays the number of resets recorded at the time of the fault Time seconds This field shows the time since the last reset that the fault occurred Area This field identifies the hardware or software that generated the fault Make a note of this information which will be useful to your technical support representative in resolving the fault Fault Number The hexadecimal number in this field provides an indication of the type of fault It is for 3Com internal use only Record any information on this screen and contact your Technical Support service for advice DUA1663
64. figured and the link pair now does not conform to the resilient link rules see Port Resilience on page 3 39 An example is where the Disable on Boot switch of the unit with the standby port has been changed to Enable Active Port This field shows which port is carrying the traffic the main port or the standby port Pair Enable This field shows whether the resilient link pair is currently enabled or not Possible values are Enabled Unless both links have failed the link is operational Disabled Both the main and standby ports are disabled CANCEL Button Move the cursor to this button and press Return to go back to the Repeater Management screen OK Button Select a resilient link pair then move the cursor to this button and press Return to display the Port Resilience screen Unit Statistics DUA1663 0BAA03 You access the Unit Statistics screen from the Repeater Management screen by selecting management level Unit then actuating the STATISTICS button The Unit Statistics screen is illustrated below All the fields are read only The statistics given are aggregates for all of the ports on the unit 3 32 CHAPTER 3 USING THE MANAGEMENT INTERFACE 3Com SuperStack II Unit Statistics Unit ID 2 Unit Type SuperStack II Hub 10 12 port TP Good Frames 345 FCS Errors 10 Good Octets 12398 Alignment Errors 0 Short Events 0 Unicast Frames 34560 Too Long Frames 9 Multicast Frames 7
65. ger security DUA1663 0BAA03 Text enclosed in markers is a list from which you can select one option only To cycle through the options press Space Text enclosed in square brackets on the screen is an Entry Field An Entry Field allows you to enter different types of data from the keyboard This may be text decimal or hexadecimal data In some cases an Entry Field will have a default entry To replace the default simply type in a new value for this field The default entry will be erased Password entry fields are hidden which means that the characters you type are not shown on the screen To delete a single character use Delete on a VT100 terminal or Backspace on a PC Text not enclosed in markers or square brackets is information that you cannot change Text for a button is shown in upper case letters A button carries out an action A menu screen such as the Main Menu consists of a number of buttons arranged in a column Other screens have a row of buttons at the bottom To actuate a button move the cursor to the button and press Return The OK and CANCEL buttons appear on many screens OK updates the stack according to the data in the fields of the screen then returns you to the previous screen CANCEL returns you to the previous screen without applying any changes A list box allows you to select one or more items from a list Selected items are indicated by an asterisk next to the it
66. i How to Use This Guide ix Other Useful Publications ix Special Messages xi Conventions xi Terminology xii INTRODUCTION Overview 1 1 Stacking Units 1 2 SuperStack Il Hub 10 Management Module 1 3 SuperStack Il Hub 10 Advanced RMON Module 1 4 INSTALLATION AND SETUP FOR MANAGEMENT Safety Information 2 1 Installing the Management or Advanced RMON Module 2 1 Unpacking 2 2 Disconnecting the Unit 2 2 Removing the Blanking Plate from the Hub 10 Unit 2 2 Inserting the Hub 10 Module 2 3 Removing the Hub 10 Module 2 5 Power Up Sequence 2 6 LEDs and Reset Button 2 7 Front Panel MGMT LED 2 7 Rear Panel Configure LED and Reset Button 2 7 Connecting Management Equipment to the Serial 2 8 Connecting a VT100 Terminal 2 8 Connecting a VT100 Terminal Emulator 2 8 Connecting a Workstation Running SLIP 2 9 Managing over the Network 2 9 Quick Start for SNMP Management Users 2 9 Using Telnet 2 10 Using an SNMP Network Manager 2 11 USING THE VT100 MANAGEMENT INTERFACE Introduction 3 1 User Interface 3 1 Screens 3 1 Screen Components 3 2 Special Keystrokes 3 4 Screen Map 3 5 Getting Started 3 6 Main Banner 3 6 Logon 3 7 Main Menu 3 9 Logoff 3 9 Auto Logout 3 10 Setup 2 10 Trap Setup 3 13 Serial Port Setup 3 15 User Access Level 3 17 Local Security 3 18 Create User 3 20 Delete Users 3 21 Edit User 3 21 Repeater Management 3 22 Repeater Statistics 3 26 Repeater Setup 3 27 Repeater Resilience 3 28 Unit
67. ils of how to install the Module into your SuperStack Il Hub 10 Chapter 2 Information about how to use the VT100 interface to manage your Chapter 3 SuperStack Il Hub 10 stack Technical information and cable pin outs Appendix A Information about obtaining technical support and 3Com repair Appendix B services Troubleshooting information Appendix C Information about interpreting statistics Appendix D Information about RMON Support Appendix E Index of management action and data Appendix F Other Useful Publications For information on installing SuperStack Il Linkbuilder FMS and FMS II hubs please refer to the user guide which accompanied the hub Remote Management The SuperStack Il Hub 10 Management Module and the SuperStack II Hub 10 Advanced RMON Module use SNMP Simple Network Management Protocol This can be accessed by remote network management facilities 3Com has a range of network management products called Transcend For details of SuperStack II Hub 10 management using the UNIX or Windows based Transcend range please refer to the appropriate manual Transcend Enterprise Manager for UNIX Part No DUA2785 OAAAOX x ABOUT THIS GUIDE Transcend Workgroup Manager for Windows Part No DUA1500 0AAAOX Transcend Enterprise Manager for Windows Part No DUA1501 0AAAOX If you are using any other remote management software refer to the accompanying documentation and read the sections that describe how t
68. ined for 802 3 frames but longer than Short Events Runt frames may occur as the result of collisions and will be propagated around the network This is a normal part of CSMA CD operation and is not an error Short Events Short Events are smaller than runt frames and are errors They may indicate externally generated noise causing problems on the network Check the cable routing and re route any cabling which may be affected by external noise sources Too Long Frames Too Long Frames are frames that exceed the maximum size for 802 3 frames 1518 octets If you see a high number of such frames you will need to isolate the source of these frames and examine the transceiver or adapter card at the device However some network protocols cause these frames Total Collisions Collisions are a normal part of 802 3 operation and occur if two devices attempt to transmit at the same time A sudden sustained increase in the number of collisions may indicate a problem with a device or cabling on the network particularly if this is not accompanied by a general increase in traffic Total Errors This field should be a small proportion of the Good Frames figure It is the sum of the following errors seen in the unit FCS Errors Alignment Errors Short Events Too Long Frames Very Long Events Data Rate Mismatches Late Events Transmit Collisions Transmit collisions are collisions that take place at the stack as opposed to those that take place
69. ing groups of information supplied by ethernet RMON probes Statistics Total LAN statistics History Time based statistics for trend analysis Alarms Triggered when statistics reach pre defined thresholds Events Reporting mechanism for alarms Hosts Statistics stored by station MAC Address HostTopN Stations ranked by traffic or errors Matrix Traffic Matrix who is talking to whom Filter Packet selection mechanism Packet Capture Allows traces of packets against pre defined filters 2 APPENDIX E RMON AND ADVANCED MANAGEMENT Benefits of RMON Traditional network management involves a network management console polling network devices e g hubs bridges routers at regular intervals to gather statistics and identify problems or trends As network sizes and traffic levels grow however this approach places a strain on the network management console which may not be able to keep up It also generates a lot of network management traffic which itself adds to the problems An RMON probe on the other hand autonomously looks at the network on behalf of the network management console without in any way affecting the characteristics and performance of the network An important characteristic of RMON is that it reports by exception The traditional approach involves the constant interrogation of network devices just to find out if the network is within its normal operating conditions RMON informs the network management console directl
70. inks per stack must not exceed 16 Resilience works by monitoring the fiber receive idle signal or the 10BASE T link Test Pulse to determine whether or not the main link is operational If a loss of link is detected the main port is disabled and the standby port becomes the active port If the main link becomes operational again the management facility does not automatically make the main port the active port You can achieve this manually by setting the Active Port field to Main The fields in the Port Resilience screen are Main Unit ID Read only This field shows the identifier of the unit that the main port belongs to Main Port ID Read only This field shows the identifier of the main port Media Type Read only This field shows the media type for the main port Refer to Table 3 4 on page 3 37 Link State Read only This field shows the connection state of the main port Refer to Table 3 5 on page 3 39 for the different states Standby Unit ID Text Field This field shows the unit identifier of the unit that the standby port belongs to You can either enter the identifier of the chosen standby unit or select a standby unit and port from the list box Standby Port ID Text Field This field shows the identifier of the standby port You can either enter the identifier of the chosen standby port or select a standby unit and port from the list box The standby port must be configured so that it is Disabled on Boot p oth
71. ion This operation will change the device back to the factory defaults OK CANCEL Figure 3 28 Initialization Screen A DUA1663 0BAA03 Select OK to perform the initialization CAUTION Use this operation with great care The unit configuration is cleared from memory and cannot be recovered All user information except the IP parameters will be lost and only the default users will be available All ports will be set to their hardware default values which may make unused disabled ports enabled and thus available to users This may also cause a loop through the resilient links 3 50 CHAPTER 3 USING THE MANAGEMENT INTERFACE Software Upgrade This option is only available to users with security access level When 3Com issues a new version of the Module SmartAgent software you can obtain the software image from 3Com bulletin board services see Appendix B You use the Software Upgrade screen to download software images To display the screen actuate the SOFTWARE UPGRADE button on the Main Menu screen 3Com SuperStack II Software Upgrade File Name FMA03_00 SLX Server Address 123 123 77 17 File Name should have the format FMA SLX This operation will reset the device once the download has been completed Download State Active IP address format d d d d CANCEL Figure 3 29 Software Upgrade Screen Th
72. ions are similar to the Create User screen see Create User on page 3 20 The main differences are the password fields You must type in your current password in the Old Password field before you can change any fields To set a new password enter the password in both the New Password and Confirm Password fields p gt If you forget your password refer to the advice in Appendix C Repeater Management This section is the most important for configuring the stack to operate correctly on your network There are three levels at which you can manage the stack and three management activities Management Levels The three management levels are m Repeater If you manage at Repeater level you are managing or viewing the device as a whole The device consists of a stack of one to DUA1663 0BAA03 DUA1663 0BAA03 Repeater Management 3 23 eight units linked together by hub expansion cables to form a single logical repeater Unit If you manage at Unit level you are managing or viewing a single unit in the stack This can be a Hub 10 FMS FMS II 10BT or 10BTi unit Port Managing at Port level lets you set up parameters and examine statistics for individual ports This allows you to manage individual users or small workgroups Management Activities The three management activities are Statistics Viewing statistics on a regular basis allows you to build up a picture of how your network is performing If you keep simple
73. lains m How to install the Module m How to set up and use the management facility which is provided by the module in order to manage a stack m How to access the facility locally using a VT100 terminal or a PC using terminal emulation software m How to access the facility remotely using a modem and a VT100 terminal or a PC using terminal emulation software m How to access the facility remotely over a TCP IP network using Telnet m How to access the facility locally or remotely from a workstation running SLIP using Telnet or SNMP management This guide does not m Show you how to install SuperStack Il Hub 10 units m Explain how to manage units using an SNMP Manager such as Transcend WorkGroup Manager for Windows m Provide a detailed description or copy of the MIB Management Information Base You can obtain a copy of the MIB from 3Com s bulletin board services if required For more information see Appendix B m Show you how to use your Telnet host application If the information in the release notes shipped with your product differs from the information in this guide follow the release notes How to Use This Guide ix How to Use This Guide The following list shows where to find specific information If you are looking for Turn to An overview of the features of the Modules and how to make best Chapter 1 use of them Also details of compatibility with LinkBuilder FMS FMS 10BT and 10BTi Deta
74. le terms a MIB consists of a large number of objects which represent features of the equipment to be controlled and managed An APPENDIX E RMON AND ADVANCED MANAGEMENT example of an object might be a port that can be enabled or disabled or a counter that can be read Consider a counter object that records the number of frames transmitted onto the network The MIB would contain the following entry a3ComEtherStatTxBytes OBJECT TYPE SYNTAX Counter ACCESS read only STATUS mandatory DESCRIPTION This is a total count of all bytes placed on the segment that originate from this station Neither the destination nor the type of information is considered for this counter a3ComEtherStatEntry 15 In simple terms this tells us The formal name of the counter is 3ComEtherStatTxBytes 3Com Ethernet Statistics Transmit Bytes The counter is to be found in a table called 3ComEtherStat The counter is the 15th column in the table It is not necessary to know and understand the MIB in order to manage a network With most management facilities the MIB is transparent But if you do have an understanding of how the various management features are derived you will be in a better position to make full use of the information presented If you would like to have a copy of the MIB contact 3Com using one of the means listed in Appendix B DUA1663 0BAA03 Counters E 7 Counters Counters are the MIB objects which hol
75. limit of a counter 4294967295 is reached the counter will roll over reset to zero automatically After this event the individual figures may give a false impression of network conditions if taken in isolation All the fields are read only Refer to Appendix D for a detailed description of the statistics fields Unit ID This field identifies the unit the port belongs to Port ID This field shows the number of the selected port 3 36 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE Media Type This field indicates the media type of the port See Media Types on page 3 37 Source Address Changes This field shows the number of different source addresses that have been received at this port If there is normally only one device connected to each port it will allow you to monitor unauthorized devices connected to the network Last Source Address This field shows the source MAC address of the last frame received at this port CLEAR COUNTERS Button For users with an access level of manager or higher Move the cursor to this button and press Return to reset all the port statistics counters to zero Clearing the port s counters affects the statistics viewed by all users CANCEL Button Move the cursor to this button and press Return to go back to the Repeater Management screen Port Setup You access the Port Setup screen from the Repeater Management screen by selecting management level Port then actuating the SETUP button
76. mark now Time Figure E 2 Counter Values After Setting Thresholds Alarms can be set up with two actions one is associated with the high threshold and the other with the low threshold Whether an action is taken depends on the circumstances surrounding each crossing of a threshold The numbered paragraphs below describe the conditions applying at the points correspondingly numbered in the diagram The running value has exceeded the high threshold If an action has been assigned to the high threshold that action will be performed No action will be taken because the value has not fallen below the low threshold before rising above the high threshold This gap between high and low thresholds is called Alarm Hysteresis The running value has fallen below the low threshold If an action has been assigned to the low threshold that action will be performed The running value had fallen below the low threshold before rising above the high threshold If an action has been assigned to the high threshold that action will be performed E 10 APPENDIX E RMON AND ADVANCED MANAGEMENT Table E 2 Alarm Actions Action High Threshold Low Threshold o action otify only Send Trap otify and Send Trap Turn port off Turn blip port port on after 5 seconds otify and disable Send Trap Turn port off port otify and enable Send Trap Turn port on port Blip port Turn port off Turn port on after 5 seconds Disable port Turn por
77. ment Management Level Port Unit ID 1 Port ID 1 STATISTICS SETUP RESILIENCE CANCEL Figure 3 15 Repeater Management Screen DUA1663 0BAA03 Repeater Management Management Level Choice Field Repeater Unit Port Toggle to the level you wish to manage Unit ID Text Field Enter the identifying number of the unit you wish to manage The Unit ID is a digit and is displayed by the Unit LED on the front of each unit The unit with the Module installed is unit 1 the next unit in the stack is unit 2 and so on If the number entered into the Unit ID field is invalid that is the unit is not in the stack the button choice will be rejected The same will happen if the Module cannot communicate with a unit whose Unit ID is known to be valid In this latter case check the cable connections Port ID Text Field Enter the identifying number of the port you wish to manage Table 3 3 provides a summary of port numbering Table 3 3 Port Numbering AUI Transceiver Unit Product Media Port Numbers Module Tcvr 3C16250 FMS 12 port Coaxial 1 to 10 left to right 11 AUI 13 3C16265 FMS 6 port ST Fiber 1 to 6 left to right Tevr 7 AUI 8 3C16271 FMS 12 port RJ45 TP 1 to 12 left to right AUI or Tcvr 13 3C16371 FMS 24 port RJ45 TP top 1 to 12 left to right AUI 25 Tcvr 26 bottom 13 to 24 left to right 3C16665 FMS II 6
78. mes 2 Very Long Events ele Data Rate Mismatches Total Collisions a Late Runt Frames T LE AutoPartitions 9 ota d Bandwidth Used 5 6 Errors 10000 Packets Source Address Changes 5 Last Source Address 080010013333 e 5 ROORCOOR Figure 3 1 An Example Screen Screens are divided into three main areas m The header area at the top of the screen displays a title which tells you the subject of the screen m The main part of the screen shows management information The components of this part of the screen are described in Screen Components on page 3 2 m The message area at the bottom of the screen is used to display information and error messages The displayed screens may not be identical to those illustrated in this chapter The contents of screens depend on your access level and the configuration at your installation Access levels are described in the section Screen Components on page 3 2 Screen Components The main part of a typical screen contains several different types of item Table 3 1 gives an example of each component and explains its use In the descriptions of the options given in this chapter the default values are underlined DUA1663 0BAA03 Component User Interface 3 3 Table 3 1 Screen Components Type Description Enabled Choice Field 005634 Entry Field Address Read only information OK Button monitor List Box mana
79. ms D 1 port 3 35 repeater 3 26 unit 3 31 status screen 3 45 stop bit serial port setup 3 16 subnet mask 3 11 A 6 system up time 3 45 T target address 3 45 technical support B 1 telnet accessing facility using 2 10 control keys 3 4 enabling disbling access 3 19 erminal emulator connecting 2 8 erminal speed 3 16 server address 3 51 hreshold high E 9 E 10 low 9 E 10 hrottle 3 14 ide mark E 8 oo long frames D 3 otal collisions D 3 otal errors D 3 otal ports partitioned 3 28 ransceiver module 3 34 ransmit collisions D 3 rap setup screen 3 13 raps community string 3 14 introduction to 3 13 IP address 3 14 throttle 3 14 troubleshooting C 1 unauthorized device action 3 38 unicast frames D 4 unit hardware revision 3 33 unit ID 3 25 3 32 3 33 3 35 3 37 unit port capacity 3 33 unit port state 3 34 unit setup screen 3 33 unit statistics screen 3 31 unit type 3 32 3 33 units available 3 27 upgradeable software version 3 46 user access level screen 3 17 user interface overview of 3 1 user name 3 20 users access level 3 20 changing community string 3 21 changing password 3 21 creating 3 20 default 3 8 deleting 3 21 password 3 20 V version number flash EPROM 3 46 hardware 3 46 PROM software 3 46 very long events D 4 VT100 terminal connecting 2 8 W wake up procedure 3 6 warning vii ELECTRO MAGNETIC COMPATABILITY STATEMENT FCC Statement Thi
80. n The Unit Setup screen is illustrated below 3Com SuperStack II Unit Setup Unit ID 2 Unit Type SuperStack Hub 10 12 port TP Unit Hardware Revision 2 Unit Port Capacity 13 Unit Boot State All Ports Enabled Active Power Supply Internal Power Supply Status OK Transceiver Module AUI CANCEL Figure 3 20 Unit Setup Screen The Unit Setup screen provides read only information It Shows how the unit has been set up and the physical configuration of the unit at the time you display the screen Changes made after the Unit Setup screen is displayed are not shown until the next occasion you display the screen Unit ID This field shows the identifier of the unit you have selected This should be the same as that indicated by the Unit LED on the front of the chosen unit The unit fitted with the Module is always unit 1 Unit Type This field displays the product name or specification of the chosen unit Unit Hardware Revision This field indicates the hardware revision of the unit You may need to quote this number to your supplier s technical support service in the event of a problem Unit Port Capacity This field indicates the maximum number of ports supported by the selected unit DUA1663 0BAA03 3 34 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE Unit Boot State This field indicates in what state the unit will boot up id Only Hub 10 and FMS Il units have a Disable on Boot switch The boot st
81. n or Esc If two or more keys are to be pressed simultaneously the keys are linked with a plus sign for example Press Ctrl Alt Del Italics Italics are used to denote new terms or emphasis xii ABOUT THIS GUIDE Terminology The following terms and abbreviations are used in this guide Flash EPROM Electrically Erasable Programmable Read Only Memory IETF Internet Engineering Task Force IP Internet Protocol IPX Internetwork Packet Exchange protocol LED Light Emitting Diode LSA LAN Security Architecture MAC Media Access Control MAU Medium Access Unit MIB Management Information Base VRAM Non Volatile Random Access Memory PROM Programmable Read Only Memory RMON IETF Remote Monitoring MIB SLIP Serial Line Internet Protocol SmartAgent Intelligent agent software SNMP Simple Network Management Protocol TCP Transfer Control Protocol Telnet A virtual terminal service protocol TFTP Trivial File Transfer Protocol UDP User Datagram Protocol UPS Uninterruptable Power System INTRODUCTION Overview The Management Module and Advanced RMON Module are SNMP conformant slide in modules that can manage an entire stack of units SmartAgent software in the Modules automatically gather and collate information about the stack As well as supporting in band management via a network link each Module has a serial port which allows out of band management When installed the Modules allow you to Monitor
82. network supplier see the following section on how to contact 3Com Support from 3Com If you are unable to receive support from your network supplier technical support contracts are available from 3Com In the U S and Canada call 800 876 3266 for customer service If you are outside the U S and Canada contact your local 3Com sales office to find your authorized service provider Country Telephone Number Country Telephone Number Australia Sydney 61 2 959 3020 Japan 81 3 3345 7251 Melbourne 61 3 653 9515 Mexico 525 531 0591 Belgium 0800 71429 Netherlands 06 0227788 Brazil 55 11 546 0869 Norway 800 13376 Canada 416 498 3266 Singapore 65 538 9368 Denmark 800 17309 South Africa 27 11 803 7404 Finland 0800 113153 Spain 34 1 3831700 France 05 917959 Sweden 46 8 632 91 00 Germany 0130 821502 Taiwan 886 2 577 4352 Hong Kong 852 868 9111 United Arab 971 4 349049 Emirates Ireland 1 800 553117 U K 0800 966197 Italy 1678 79489 US 1 408 492 1790 These numbers are toll free DUA1663 0BAA03 Returning Products for Repair B 5 Returning Products for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization RMA number A product sent to 3Com without an RMA number will be returned to the sender unopened at the sender s expense To obtain an RMA number call or fax Country Telephone Number Fax Number
83. nly one Ethernet segment there is one interface that can gather RMON information For those resources created by the RMON agent itself during startup the owner string will be set to monitor RMON monitoring requires considerable processing power During extremely heavy traffic the SuperStack Il Hub 10 Management Module can become swamped and may not process data Usually this has a negligible effect If you want to be sure to collect all data we recommend you use the Advanced RMON Module with its faster processor and increased memory Also you should use the Advanced RMON Module if you need memory hungry statistics for instance prolonged packet capture sessions The Management Information Base MIB DUA1663 0BAA03 At the heart of all network management is the Management Information Base or MIB It cannot be stressed too much how important it is to understand the nature of the MIB if you are to achieve the maximum potential offered by the management system The MIB is a formal structured set of data describing the way the network is functioning The management software the agent accesses the set and abstracts the information it requires The agent will also store data in the MIB The organization of the MIB is such that an SNMP network management package for example Transcend without specific knowledge of a particular device can manage that device at an adequate level This is known as Generic Network Management In simp
84. nterface 3 5 Screen Map This diagram shows how the menus are related to each other Main Banner Wake up Interface Repeater Manage ment Repeater Statistics Repeater Setup User Access Levels Local Security Repeater Create Resilience User Unit Delete Statistics Users Trap A Unit Change Setup User Software Upgrade Port Statistics Initializ ation dm Remote Poll DUA1663 0BAA03 Port Setup Port Resilience 3 6 CHAPTER 3 USING THE MANAGEMENT INTERFACE Getting Started This section covers logging on to the facility displaying the main menu and logging off Main Banner If you are using a VT100 terminal connected directly or via modems to the serial port you need to perform the wake up procedure To do this type Return Return at the terminal By default the Module will automatically configure the baud rate of the serial port to operate with the connected terminal or modem provided the parity stop bits and character size are identical If you are using Telnet or SLIP the wake up procedure is performed automatically When the wake up procedure is successfully completed the main banner is displayed 3Com SuperStack II ss U U ppp EEEEE RRR SS TTTTTTT AA cc K K S sU Up pE R T A A Qo ERK ok S U Up pk R RS T A A
85. o manage SNMP devices Telnet If you wish to manage your SuperStack Il Hub 10 stack via Telnet you will need to refer to the manual s supplied with your Telnet host application as well as this guide SNMP We recommend the following publication for an easy to read description of SNMP The Simple Book by Marshall T Rose SBN 0 13 81261 1 9 published by Prentice Hall Special Messages xi Special Messages A special format indicates notes cautions and warnings These messages are defined as follows Notes call attention to important features or instructions CAUTION Cautions contain directions that you must follow to avoid immediate system damage or loss of data WARNING Warnings contain directions that you must follow for your personal safety Follow all instructions carefully PPY Conventions The following table lists conventions that are used throughout this guide Enter vs Type When the word enter is used in this guide it means type something then press the Return or Enter key Do not press the Return or Enter key when an instruction simply says type Text representedas This typeface is used to represent displays that appear on your Screen terminal screen and details that you enter for example ispl display Username Keys When specific keys are referred to in the text they are called out by their labels such as the Return key or the Escape key or they may be shown as Retur
86. oice Field Enabled Disabled The default state of a port is enabled If you do not wish to use a port set it to Disabled to prevent unauthorized access to the network You cannot enable or disable a port that is the main or standby port of a resilient link pair Security Choice Field Enabled Disabled All SuperSatck Il Hub 10 units all LinkBuilder FMS Il 3C16665 and 3C16672 modules and other LinkBuilder FMS Il Modules with serial number prefixes of 0200 or greater offer the more sophisticated security function detailed 3 38 CHAPTER 3 USING THE MANAGEMENT INTERFACE below Other units will display the Unauthorized Device Action field described below This field provides access to the security features from the serial port in case you lock yourself out of in band management When enabled a default set of security features is applied to the unit much as described under Unauthorized Device Action below The first address is learnt Any different address will cause the port to be disconnected The learnt address will receive traffic addressed to it together with multicast and broadcast frames Other traffic will be scrambled If you use a 3Com Transcend management application you have greater control over security including support for multiple address per port With the designated Hub 10 units you can set up secure resilient pairs using a Transcend management application Follow the instructions in the manual for tha
87. on the network and are APPENDIX D STATISTICS detected at the stack Collisions are a normal part of 802 3 operation and are not errors Transmit collisions form part of the Total Collisions figure Unicast Frames This is the total number of frames addressed to a single MAC address that is a single device seen at the repeater unit port Very Long Events A very long event is an event that will cause Jabber Lock Up protection to operate This statistic shows how many times the repeater has had to protect against jabber seen at a port Isolate the source of very long events and check that the transceiver or adapter card in the device is operating correctly DUA1663 0BAA03 RMON AND ADVANCED MANAGEMENT What is RMON Transcend SmartAgent RMON provides a mechanism for remote monitoring and analysis of a Local Area Network RMON is the common abbreviation for the Remote Monitoring MIB as defined by the IETF in documents RFC 1271 and RFC 1757 A typical RMON system consists of two components The Probe Connects to a LAN segment examines all the LAN traffic on that segment and keeps a summary of statistics including historical data in its local memory The Management Console Communicates with the Probe and collects the summarized data from it The console does not have to be on the same network as the probe and can manage the probe by either in band SNMP or out of band connections The IETF defines the follow
88. onnect to the outside world you must change all the arbitrary IP and SLIP addresses to comply with 6 APPENDIX A TECHNICAL INFORMATION CABLE PIN OUTS AND PROTOCOLS Obtaining those you have been allocated by Network Information Center NIC If you do not do this your outside communications will not operate A subnet mask is a filtering system for IP and SLIP addresses If you are unsure about what mask to use we suggest you use a general mask 255 255 255 0 to tie in with the advice above a Network Number There are three organizations responsible for allocating network numbers The details are correct at the time of printing but they may change USA InterNIC Network Solutions Attention InterNIC Registration Services 505 Huntmar Park Drive Herndon VA 22070 Telephone 1 800 444 4345 Toll Free 1 619 455 4600 1 703 742 4777 You can also send e mail to the addresses listed below hostmaster rs internic net host domain network changes and updates action Grs internic net computer operations mailserv rs internic net automatic mail service info internic net automatic mail service for general enquiries refdesk is internic net enquiries not handled by the services above Europe RIPE Attention RIPE NCC Kruislaan 409 NL 1098 SJ Amsterdam The Netherlands DUA1663 0BAA03 Protocol Addresses A 7 Telephone 31 20 592 5065 Fax 31 20 592 5090 e mail ncc ripe net Asia Pacific Network Inf
89. ormation Centre APNIC DOM Attention Asia Pacific Network Information Centre APNIC DOM c o Computer Centre University of Tokyo 2 11 16 Yayoi Bunkyo ku Tokyo 113 Japan Admin Contact Nakayama Masaya MN89 Telephone 81 3 3812 2111 ext2720 e mail nakayama nic ad jp Technical Contact Conrad David DC396 Telephone 81 3 3580 3781 or 81 3 3580 3784 Fax 81 3 3580 3782 e mail davidc apnic net DUA1663 0BAA03 8 APPENDIX A TECHNICAL INFORMATION CABLE PIN OUTS AND PROTOCOLS DUA1663 0BAA03 oote TECHNICAL SUPPORT 3Com provides easy access to technical support information through a variety of services This appendix describes these services On line Technical Services 3Com offers worldwide product support seven days a week 24 hours a day through the following on line systems 3Com Bulletin Board Service 3ComBBS World Wide Web site ThreeComForum on CompuServe 3ComFacts automated fax service 3Com Bulletin Board Service 3ComBBS contains patches software and drivers for all 3Com products as well as technical articles This service is available via modem or ISDN seven days a week 24 hours a day Access by Modem To reach the service by modem set your modem to 8 data bits no parity and 1 stop bit Call the telephone number nearest you Country Data Rate Telephone Number Australia up to 14400 bps 61 2 9955 2073 France up to 14400 bps 33 1 69 86 69 54 German
90. ort RS 232C management port Null Modem Cable RS 232C 25 pin to RS 232C 25 pin PC Terminal RS232C Serial Port 25 pin male female 25 pin male check terminal Screen 1 1 Screen only required if screen TD 2 3 RxD RxD 3 2 TxD always required Ground 7 7 Ground RTS 4 nc nc 4 RTS CTS 5 20 DTR DSR 6 5 CTS required for DCD 8 e e 6 DSR handshaking DTR 20 4 gt 8 DCD DUA1663 0BAA03 A 4 APPENDIX A TECHNICAL INFORMATION CABLE PIN OUTS AND PROTOCOLS PC AT Serial Cable 9 pin to RS 232C 25 pin RS232C Serial Port 25 pin male TxD 2 e RxD 3 Ground 7 e RTS 4 nc nic CTS 5 e e DSR 6 DCD 8 DIR 20 RI 22 nc nic Modem Cable PC AT Serial Port 9 pin male 2 RxD 3 TxD always required 5 Ground 7 RTS 4 DTR 8 CTS required for 6 DSR handshaking 1 DCD 9 RI RS 232C 25 pin to RS 232C 25 pin RS232C Serial Port 25 pin male Screen TxD RxD RTS CTS DSR Ground DCD DTR Aa oo N N O 20 20 1 Screen 2 TxD 3 RxD 4 RTS 5 CTS 6 DSR 7 Ground 8 DCD DTR DUA1663 0BAA03 Protocol Addresses A 5 Protocol Addresses IPX Addresses If you are using the IPX protocol the Module will be allocated an IPX address automatically by the local IPX router or NetWare File Server This happens approximat
91. our supplier s technical support service Transceiver Module This field shows what type of module is fitted if any in the unit s transceiver module slot Refer to the table in DUA1663 0BAA03 Repeater Management 3 35 page 3 37 to identify the type of transceiver module fitted If the unit has a shared AUl transceiver port this field shows AUI if no transceiver module is fitted In other cases Not Fitted is shown if no module is fitted in the slot CANCEL Button Move the cursor to this button and press Return to go back to the Repeater Management screen Port Statistics You access the Port Statistics screen from the Repeater Management screen by selecting management level Port then actuating the STATISTICS button The Port Statistics screen is illustrated below 3Com SuperStack II Port Statistics Unit ID 2 Port ID 11 Media Type Twisted Pair 10BaseT Good Frames 345 F E 10 Good Octets 12398 Allonne t Errors 0 Unicast Frames 34560 Short Events 0 Multicast Frames 7 Too Long Frames 0 Broadcast Frames 2 Very Long Events 1 IN Data Rate Mismatches 0 Total Collisions 20 Late Events 0 Runt Frames 0 Total Errors 11 AutoPartitions 5 Bandwidth Used 6 Errors 10000 Packets 0 Source Address Changes 5 Last Source Address 080010013333 CLEAR COUNTERS CANCEL Figure 3 21 Port Statistics Screen DUA1663 0BAA03 The screen is updated every 3 seconds If the top
92. port ST Fiber 1 to 6 left to right 7 AUI 8 3C16670 FMS II 12 RJ45 TP top 1 to 6 left to right AUI or Tcvr 13 bottom 7 to 12 left to right 3C16671 FMS 24 port RJ45 TP top 1 to 12 left to right AUI 25 26 bottom 13 to 24 left to right 3C16672 FMS 24 port telco TP left connector 1 to 12 AUI 25 26 right connector 13 to 24 3C16665A Hub 10 6 port ST Fiber 1 to 6 left to right 7 AUI 8 3C16670A Hub 10 12 port RJ45 TP top 1 to 6 left to right AUI or Tcvr 13 DUA1663 0BAA03 bottom 7 to 12 left to right 3 26 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE Table 3 3 Port Numbering Continued AUI Transceiver Unit Product Media Port Numbers Module Tcvr 3C16671A Hub 10 24 port RJ45 P top 1 to 12 left to right AUI 25 Tcvr 26 bottom 13 to 24 left to right 3C16672A Hub 10 24 port telco P left connector 1 to 12 AUI 25 Tcvr 26 right connector 13 to 24 STATISTICS Button Move the cursor to this button and press Return to move to the Statistics screen for the management level you have chosen SETUP Button Move the cursor to this button and press Return to move to the Setup screen for the management level you have chosen RESILIENCE Button Move the cursor to this button and press Return to move to the Resilience screen for the management level you have chosen either Repeater or Port This button is not displayed when Unit is s
93. r of times contact your supplier If the MGMT LED is off there is no Module installed or the unit cannot correctly identify the installed module Check that the connector cables are secure and that you have installed the module correctly as described in Chapter 2 2 APPENDIX C TROUBLESHOOTING If you still cannot resolve the problem the Module itself may be faulty Contact your supplier Screens are incorrectly displayed Check that your terminal or terminal emulator is correctly configured to operate as a VT100 terminal Check the settings on your terminal or emulator The parity must set to none the stop bit 1 and the character size 8 The management facility s autoconfiguration works only with speeds from 1200 to 9600 baud The SNMP manager cannot access the device Check the device s IP address subnet mask and default router are correctly configured see Setup on page 3 10 and the device has been reset see Reset on page 3 48 Check that the device s IP address is correctly recorded by the SNMP manager refer to the user manual for the manager The Telnet workstation cannot access the device Check the device s IP address subnet mask and default router are correctly configured see Setup on page 3 10 and the device has been reset see Reset on page 3 48 Ensure that you enter the IP address correctly when invoking the Telnet facility Traps are not received by the SNMP manager Check the
94. r NetWare File Server and you should not need to change it DUA1663 0BAA03 Node Read only This field shows the node address of the repeater stack which is learned automatically Status Choice Field Enabled Disabled This field shows whether the data link protocol is enabled Choose Disabled if you wish to prevent access for any reason such as security considerations Data Link Protocol Read only This field shows the name of the IPX data link layer protocol OK Button Press Return when the OK button is highlighted to action your selections for this screen You will be returned to the main menu If you have changed the parameters you will need to reset the Module to effect the changes Refer to the section Reset on page 3 46 SETUP TRAPS Button Press Return when the SETUP TRAPS button is highlighted to set up the parameters for traps see Trap Setup below SERIAL PORT Button Press Return when the SERIAL PORT button is highlighted to set up the RS 232C port parameters see Serial Port Setup on page 3 15 CANCEL Button Press Return when the CANCEL button is highlighted to abandon this screen without actioning any changes and return to the main menu Trap Setup gt DUA1663 0BAA03 Traps are messages sent across the network to an SNMP network manager such as Transcend WorkGroup Manager for Windows Traps can alert the system administrator to faults or changes in the stack Your Transcend
95. rames Port Statistics w Total Collisions Unit Statistics P Ww Un Total Collisions Port Statistics Total Errors 3 26 Repeater Statistics Total Errors 3 31 Unit Statistics Total Errors 35 Port Statistics w jw N Ww Total Ports Partitioned Repeater Setup Ww Transceiver Module Unit Setup w w N Ww Transmit Collisions Repeater Statistics Unauthorized Device Action Port Setup w w N Ww Unicast Frames Repeater Statistics DD Fy 5 55 02200029 55 55 Gb 21 O US C XY GO 55 CY 55 95 1 w kai w Unicast Frames Unit Statistics DUA1663 0BAA03 Parameter Key Screen nicast Frames nit Boot State nit Capacity nit Hardware Revision nit ID nit ID nit ID nit ID nit ID nits Available nit Type nit Type pgradeable Software Version ser List ser Name ser Name ser Name U U U U U U U U U Unit Port Capacity U U U U U U U U U ser Name Very Long Events Very Long Events Very Long Events DUA1663 0BAA03 Z0 ZO mn m t D DD DDD D ZO M DDD D Port Statistics nit Setup epeater Setup nit Setup epeater Management nit Statistics ort Statistics nit Setup ort Setup nit Setup epeater Setup nit Setup U R U R U P U P U R U U nit Statistics Status Screen Delete User Screen Logon Screen Auto Logout Screen Create
96. rd OK Figure 3 3 Logon Screen DUA1663 0BAA03 3 8 CHAPTER 3 USING THE MANAGEMENT INTERFACE If you are logging on for the first time after installation or initialization use one of the default user names and passwords shown in Table 3 2 The user name to use depends on which access level you require Table 3 2 User Names And Passwords Default User Name Password Access Level monitor monitor monitor You can access but not change the operational parameters of the stack manager manager manager You can change the operational parameters of the stack but cannot add or delete users download software or initialize the stack security security security You can access all the screens and change all manageable parameters At the earliest opportunity the system manager should change the gt passwords for the default users The system manager will need to logon as manager and monitor to change their passwords The section Edit User on page 3 21 explains how to change a password Initializing the stack returns the passwords to their default values see the section Initialization on page 3 49 If you are not logging on as one of the default users your system manager will have assigned you a user name and password The user name determines which of the three access levels monitor manager or security you have The user name and passwords are case sensitive To
97. re that you only handle the Module by holding it by the edges We recommend that wherever possible you use a wriststrap or other earthing method whilst installing or removing the Module to prevent damage by static discharge Installing the Management or Advanced RMON Module PN WARNING You can only install the Hub 10 Management Module or Advanced RMON Module in a Hub 10 or LinkBuilder FMS II unit If you attempt to install either Module into a LinkBuilder FMS unit you will damage both products The section SuperStack Il Hub 10 Management 2 2 CHAPTER 2 INSTALLATION AND SETUP FOR MANAGEMENT Module on page 1 15 lists the units into which you can install the module To complete the installation you will need a small cross bladed screwdriver The installation comprises the following steps Unpack the Hub 10 Module from the carton Disconnect all the units in the stack from the mains power supply Disconnect the unit into which you will fit the module from the other units Position the unit so that you have enough space in which to work Remove the blanking plate from the rear panel Insert the module and connect it to the unit Reinstall and power up all the units in the stack as described in the section Power Up Sequence on page 2 6 Unpacking Remove the Hub 10 Module from its packaging taking care not to touch any of its components or connectors In addition to this manual the package should contain Th
98. rors 10000 frames high threshold 1596 200 low threshold recovery 1096 100 samples per average 4 4 period 15 seconds 15 seconds Once alarms have been set up on a module in a particular slot they will be retained against that slot in any new configuration This situation may be made clearer by the following examples If a module is removed and replaced by a similar module the alarms will be retained on the new module If a module is swapped to another repeater backplane bus the alarms will be retained on that module Here is an example of how you may benefit from the power of alarms 12 APPENDIX E RMON AND ADVANCED MANAGEMENT Broadcast Storms are capable of using most of the available bandwidth of your network If you set up an alarm on the Broadcast Frames Received counter of a port with the Notify and Blip action see Table E 2 on page E 10 on the high threshold If a broadcast storm occurs on that port and the counter crosses the high threshold the port will disabled for 5 seconds allowing the storm to subside and preventing the storm from reaching the rest of the network Audit Log The Module keeps an audit log of all management user sessions providing a record of changes to the configuration database MIB The log can be read only by a manager at the security i e highest access level using an SNMP network manager Each entry in the log is in the format Entry number timestamp userID item ID inclu
99. s is used The VT100 management interface provides a subset of the features of SNMP management m Over a TCP IP network using a workstation running VT100 terminal emulation and Telnet The VT100 management interface is used m Byconnecting a workstation running SLIP to the serial port which allows you to use out of band Telnet or SNMP management The workstation can be connected directly or remotely via a modem This method provides a way of managing the stack in situations where the LAN is not providing a reliable service or where the network manager does not have direct LAN connectivity Any changes made to the configuration of a device using one method of access will be reflected in the configuration seen by all other methods of access Using SNMP management you can access RMON statistics for a stack Adequate statistics for most situations will be stored by the SuperStack II Hub 10 Management Module 3C166304 If you want to perform extremely comprehensive RMON analysis on heavily loaded networks you should consider using the SuperStack Il Hub 10 Advanced RMON Module 3C16632 There is no functional difference between the two types of module All software will work with both modules as described in this manual See Appendix A for the specification of each module Stacking Units You can manage a stack containing a mixture of SuperStack Il Hub 10 LinkBuilder FMS FMS 10BT and 10BTi units DUA1663 0BAA03 SuperSta
100. s equipment has been tested and found to comply with the limits for a class A digital device pursuant to part 15 of FCC Rules These imits are designed to provide reasonable protection against interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference with radio communications Operation of this equipment in a residential area is ikely to cause harmful interference in which case the user will be required to correct the interference at his own expense CSA Statement This Class A digital apparatus meets all requirements of the Canadian interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences ELECTRO MAGNETIC COMPATABILITY STATEMENT DUA1663 0BAAO03alpha LiMITED WARRANTY HARDWARE 3Com warrants its hardware products to be free from defects in workmanship and materials under normal use and service for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller Internetworking products One year Network adapters Lifetime Ethernet stackable hubs and Unmanaged Ethernet fixed port repeaters Lifetime One year if not registered Power supply and fans in these stackable hubs and unmanaged repeatersOne Year Other hardware products One Year Spare parts and sp
101. s in Technical Data and Computer Software clause at 48 C F R 52 227 7013 3Com Ireland c o 3Com Limited ISOLAN HOUSE Brindley Way Hemel Hempstead Herts HP3 9XJ UK For civilian agencies Restricted Rights Legend Use reproduction or disclosure is subject to restrictions set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 C F R 52 227 19 and the limitations set forth in 3Com s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States 3Com CardFacts NetFacts CardBoard and Transcend are registered trademarks of 3Com Corporation Registered trademarks are registered in the United States and may or may not be registered in other countries SuperStack and SmartAgent are trademarks of 3Com Corporation 3ComFacts and Ask3Com are service marks of 3Com Corporation Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries The technology behind 3Com s LAN Security Architecture is protected by U S patents 5161192 and 5386470 foreign patents pending CompuServe is a registered trademark of CompuServe Inc List any other company trademarks here Other brand and product names may be registered trademarks or trademarks of their respective holders CONTENTS ABOUT THIS GUIDE A Word about Safety vii About this User Guide vi
102. s level of security should be assigned only to the system administrator or somebody with the system administrator s responsibilities All the fields are choice fields The options for each field are Enabled the default or Disabled To prevent you from locking yourself out from the stack completely serial port access is always kept enabled for the security access level Make any changes you require then move the cursor to the OK button and press Return Remember that you can use Ctrl B to jump to the OK button Serial Port Choice Field Enabled Disabled To prevent access to the management facilities via the serial port disable access to the facility for each access level To allow you to configure the stack locally in the event of problems on your network we suggest that you change the default password see Edit User on page 3 21 for the permanently enabled security access level Remote Telnet Choice Field Enabled Disabled Telnet is an insecure protocol You may wish to disable all access to the management facilities via Telnet if there is important or secret data on your network Community SNMP Choice Field Enabled Disabled The stack can be managed via SNMP using a remote network manager such as Transcend WorkGroup Manager for Windows Community SNMP does have some simple security features but it is an insecure protocol You may wish to disable all access to the management facilities via Community SNMP if there
103. sk 3 11 disconnect unauthorized device 3 38 DSR control 3 16 E edit user screen 3 21 EMC standards A 1 entry fields 3 3 environmental standards errors 10000 packets D 2 network manager 3 14 repeater setting up 3 11 IP parameters entering for quick start 2 10 IPX address network manager 3 14 IPX network 3 12 F fault log screen 3 47 fault number 3 47 fax service See 3ComFacts FCS errors D 2 flow control 3 16 Hub 10 management module blanking plate 2 2 connecting to unit 2 3 contents of package 2 2 installation overview of 2 1 removing 2 5 units supported 1 3 front panel MGMT LED 2 7 K keys Ctrl B 3 4 Ctrl K 3 4 Ctrl P 3 4 3 4 Tab 3 4 G good frames D 2 good octets D 2 H hardware revision of unit 3 33 hysteresis alarm E 9 L last restart type 3 46 last source address 3 36 late events D 2 LEDs 2 7 link pulse 3 38 link state 3 39 3 42 3 43 list box 3 3 local security screen 3 18 logoff 3 9 logon 3 7 logon screen 3 7 lost links 3 39 image file name 3 50 inactivity timer 3 10 in band management 2 9 initialization screen 3 48 IP address allocation of A 6 format A 5 M MAC address 3 11 main banner screen 3 6 main menu screen 3 9 main port 3 30 main port ID 3 42 main unit 3 30 main unit ID 3 42 management facility logoff 3 9 logon 3 7 starting 3 6 management information base See MIB management level 3 25 managemen
104. stack and the Default Router address if necessary if you know them If you have a BootP server on your network and wish to assign the details automatically you may use the BootP facility Refer to the documentation with your BootP server and Setup on page 3 10 for details of how to do this Logoff from the VT100 interface You can now start a Telnet management session Make sure that your Telnet application is emulating a VT100 terminal To open the Telnet session you must specify the IP address of the stack that you entered in step 2 above Check the user manual supplied with the Telnet facility if you are unsure how to do this Once the connection is established you will see the main banner of the VT100 management interface and you may log on The VT100 management interface is described in detail in Chapter 3 Using an SNMP Network Manager DUA1663 0BAA03 The Transcend WorkGroup and Enterprise Network Management Applications will enable you to get the best out of your SuperStack Hub 10 units Any SNMP based network manager can manage SuperStack Il Huub 10 and LinkBuilder FMS Series units provided the MIB Management Information Base is installed correctly at the management station The MIB defines what information is available from the stack through the Module how that information is structured and how the SNMP network manager can read and update it The use of 3Com network managers is not described in detail in this manu
105. t application Unauthorized Device Action Choice Field Off Report Only Disconnect And Report This field specifies the action to be taken when an unauthorized device is detected on the port The management facility detects an unauthorized device when there is a change in the source address of frame or packets received by the port a Off means no action will be taken Report Only means that a trap will be sent every 5 seconds to notify the remote network manager that an unauthorized device is accessing the port a Disconnect And Report indicates that a trap will be sent to the network manager and the port disabled Refer to Port Setup on page 3 36 for details of how to re enable the port Link Pulse Choice Field Enabled Disabled This field is applicable to 10BASE T units only and will not be seen for other types of unit DUA1663 0BAA03 Repeater Management 3 39 You can enable or disable the generation of link pulse signals for an individual port In an 802 3 10BASE T compliant network leave this option at the default setting If you are using non compliant transceivers that do not use the link pulse signal you will need to disable link pulse to enable the network to function correctly Alternatively you can replace non compliant transceivers with 10BASE T compliant transceivers such as the ISOLAN TP Transceiver 3C16810 Disabling generation of link pulses also disables detection of link pulses p In this c
106. t module accessing facility 1 1 hardware version 3 46 LEDs 2 7 powering up 2 6 reset button 2 7 upgrading software 3 50 map of screens 3 5 media type 3 35 3 37 3 42 3 43 MGMT LED 2 7 modem cable pin outs A 4 multicast frames D 3 power consumption A 2 power dissipation A 2 power supply status 3 34 power up sequence 2 6 Q quick start for SNMP management 2 9 N NetWare file server A 5 network manager community string 3 14 managing stack using 2 11 network supplier support B 3 node IPX 3 12 null modem cable pin outs A 3 O OK button 3 3 on line technical services B 1 out of band management 2 8 P pair enable 3 31 pair state 3 30 parity serial port setup 3 16 partition state 3 39 passwords changing 3 21 creating 3 20 default 3 8 PC AT serial cable pin outs A 4 port ID 3 25 3 37 port numbering table of 3 25 port resilience screen 3 39 port setup screen 3 36 port state 3 37 port statistics screen 3 35 port type 3 36 R rear panel configure LED 2 7 redundant backup power supply 3 34 remote poll screen 3 44 remote telnet access 3 19 repeater health 3 28 repeater management screen 3 23 repeater resilience screen 3 28 repeater setup screen 3 27 repeater statistics screen 3 26 reset button 2 7 reset count 3 47 reset screen 3 47 resilient links 3 28 changing standby link 3 39 creating 3 39 deleting 3 39 rules for setting up 3 41 restart count 3 45 returning products for repair B
107. t off Enable port Turn port on otify and switch resilient port otify and blip module otify and disable module otify and enable module Blip module Disable module Re enable module Send Trap If port is the Main of a resilient pair then switch to standby Send Trap Turn all ports on module off Turn ports back to original state after 5 seconds Send trap Turn all ports on module off Send Trap Turn ports back to original state Turn all ports on module off Turn ports back to original state after 5 seconds Turn all ports on module off Turn ports back to original state DUA1663 0BAA03 Counters and RMON Alarms E 11 Using Alarms gt DUA1663 0BAA03 How to set up alarms is described in the manuals of your management application The alarm carries the ability to define actions to be taken when the alarm value rises above the high threshold and or falls below the low threshold Two system alarms with default values will be automatically set up for each port at initialization and whenever a new module is detected The system alarms form part of the 1024 maximum The system alarms are set up on the Smart Objects a Percentage Bandwidth Used Errors per 10 000 frames The system alarms can be modified but cannot be created or deleted by a user The default values are given in the table below Table E 3 Smart Object Default Values Parameter Traffic Level Er
108. tate Operational 4 3 Active Port Main 4 10 Pair Enable Enable4 APPLY DELETE CANCEL Figure 3 23 Port Resilience Screen gt DUA1663 0BAA03 Rules for setting up resilient links A resilient pair cannot be set up through the VT100 screens if one or either of the ports is a secure port You can set up a resilient link pair to use ports on the same unit or on different units in the stack to prevent the loss of both links should a single unit fail This applies to fiber and twisted pair transceiver module ports but NOT to AUI ports with external transceivers fitted The resilient link pair can be set up only on fiber or twisted pair media types although the main and standby links can be both media types The standby port must be configured so that it is Disabled on Boot This ensures that a loop will not be created when the unit boots up This means that a standby port can be configured only on a Hub 10 or an FMS Il unit and that the Disable on Boot switch see Figure 2 1 on page 2 3 on the unit must be set to Disable Refer to the unit s user manual for instructions on how to set the switch The resilient link pair must only be defined at one end of the link A resilient link pair can only be set up if neither of the ports already form part of another resilient link 3 42 CHAPTER 3 USING THE MANAGEMENT INTERFACE m The number of resilient l
109. tatus screen provides read only information about the Module To display the screen select the STATUS button on the Main Menu screen 3Com SuperStack II Status System Up Time seconds 456 Number of Resets 1 Last Reset Type Command Version Numbers Hardware Version 2 00 Upgradable Software Version 3 00 Boot Software Version 15090 FAULT LOG CANCI pa Figure 3 25 Status Screen DUA1663 0BAA03 System Up Time seconds This field indicates how long the unit has been running since the last reset See Reset on page 3 48 for a description of resetting the unit Number of Resets This field shows the total number of system resets since the Module was first installed or initialized This information may 3 46 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE be useful to your technical support representative in the event of problems Last Reset Type This field indicates the cause of the last reset This information may be useful to your technical support representative in the event of problems Hardware Version This is the hardware version of the Module installed in the unit Please make a note of this number in case you ever need to contact your technical support representative Upgradeable Software Version This is the version number of the software image stored in the Flash EPROM Please make a note of this number in case you ever need to contact your technical support repr
110. ter DUA1663 0BAA03 LEDs and Reset Button 2 7 LEDs and Reset Button Two LEDs indicate the state of the Module a red green LED on the front panel of the management unit and an amber LED at the rear of the Module The Reset button is situated at the rear of the Module Front Panel MGMT LED gt The LED marked MGMT on the front panel of the management unit shows the status of the installed Module Green The Module is operational and no problems are indicated steady Green Software is being downloaded see Software Upgrade on flashing page 3 50 or a self test is being performed see Fault Log onpage 3 47 Red A fault has been identified If the agent software image is corrupted the Module will automatically try to reload the software image from the last configured download Reset the unit see Rear Panel Configure LED and Reset Button Off There is no Module installed in the unit or the unit cannot identify the installed module Check that you have installed the module correctly and that the connector cable is secure If the measures suggested above fail to rectify the problem please contact your supplier for further advice Rear Panel Configure LED and Reset Button DUA1663 0BAA03 The rear panel of the Module has a single amber LED referred to as the Configure LED and a Reset button Pressing the Reset button causes the Module to be reset This has the same effect as executing the
111. the Ethernet repeater traffic configuration lost Statistics Stats History 3 default sessions configuration lost a 60 second interval 120 historical samples stored b 30 second intervals 120 historical samples stored C 30 minute intervals 96 historical samples stored Host Table 1 session collecting host information configuration lost Matrix Table 1 session collecting matrix information configuration lost Hosttop N No default topN groups configuration lost Alarm Default alarms are configured at startup configuration restored Event Default events exist to describe our action on event configuration System User can create new events restored Filter Full packet filter is supported configuration lost Capture Full packet capture is supported on the Module configuration lost gt After the default sessions are created they have no special status The user can delete or change these parameters as required Two default alarms are created initially These are bandwidth used and errors 10000 packets These can be deleted or changed as required RMON in the SuperStack implementation is a very user configurable system The user can create multiple monitoring facilities to run in parallel Examples of these facilities may be DUA1663 0BAA03 p The Management Information Base MIB E 5 monitor all statistics learn all the hosts create a who talks to whom matrix Because the SuperStack Il Hub 10 stack supports o
112. the connected equipment to work with the Module Refer to Getting Started on page 3 6 for details of how to get started with the VT100 management interface Connecting a VT100 Terminal Emulator The workstation will need to run suitable terminal emulation software Many VT100 terminal emulation packages are available Refer to the user manuals of your particular terminal emulation package for details or consult your supplier if you need further advice DUA1663 0BAA03 Managing over the Network 2 9 If you are using a PC you need a null modem cable with an appropriate connector The Module automatically configures its baud rate to that of the terminal emulator as described above You must set the character size 8 stop bit 1 and parity none settings of the emulator to work with the Module Refer to Getting Started on page 3 6 for details of how to get started with the VT100 management interface Connecting a Workstation Running SLIP You can communicate with the Module via the serial port from a workstation running SLIP Serial Line Internet Protocol In this way you can manage the stack using Telnet or SNMP out of band management The cables you require to connect the workstation will depend on its manufacturer and model The general guidance given above for terminals will be useful here You must also configure your workstation to use SLIP Consult the operator manuals of your workstation for details You must config
113. the resilient link pair If you disable a link pair both the main and standby ports will be disabled Standby Links Available List Box The list box shows the Unit ID and Port ID of the possible standby links for the selected main link These are all the Disable on Boot ports that are not already part of a resilient link pair To select a standby link move the cursor to the list box and use the arrow keys until the desired link is highlighted then press Return The unit and port identifiers of the selected unit will be copied into the Standby Unit ID and Standby Port ID fields APPLY Button Move the cursor to this button and press Return to configure the resilient link pair When the link is configured you are returned to the previous screen 3 44 CHAPTER 3 USING THE VT100 MANAGEMENT INTERFACE automatically enable Link Pulse generation see Port Setup on page 3 36 for both ports If you subsequently delete the resilient link pair Link Pulse generation remains enabled p When you configure a resilient link pair the management facility will DELETE Button Move the cursor to this button and press Return to delete the resilient link pair specified by the Main Unit ID Main Port ID Standby Unit ID and Standby Port ID fields You will be asked to press Return again for confirmation CANCEL Button Move the cursor to this button and press Return to go back to the previous screen either the Repeater Management scre
114. top Bit 1 are fixed Attempts to set invalid serial port parameters will be rejected All parameters will be reset to their default values DUA1663 0BAA03 User Access Level 3 17 User Access Level The User Access Level screen provides a menu to access four further screens 3Com SuperStack II User Access Levels Menu p o Dp n URITY CREATE USER DELETE USERS EDIT USER AT ENU Figure 3 9 User Access Level Menu Local Security This screen allows you to enable or disable access to the management facility for each combination of access method serial port Telnet or SNMP and access level Create User This screen allows you to create another user who can access the management facility in addition to the default users Delete Users This screen allows you to remove users other than the default users Edit User This screen allows you to change your own password and community string The first three screens are only available for users with security access level Select the option for the screen you require and press Return DUA1663 0BAA03 3 18 CHAPTER 3 USING THE MANAGEMENT INTERFACE Local Security You can access the Local Security screen by actuating the LOCAL SECURITY button on the User Access Level screen This option is available only for users with security access level 3Com SuperStack II Local Sec
115. ure the serial port of the Module to accept SLIP This involves setting up the SLIP parameters address and subnet mask You can set up the SLIP parameters using either a network connection or a serial port connection Refer to IP Addresses on page A 5 if you are unsure of the values to use The section Setup on page 3 10 explains how to set the parameters using the VT100 management interface Refer to Getting Started on page 3 6 for details of how to get started with the VT100 management interface Managing over the Network DUA1663 0BAA03 This section describes how to set up equipment to allow you to communicate with the Module over the network in band management 2 10 CHAPTER 2 INSTALLATION AND SETUP FOR MANAGEMENT Quick Start for SNMP Management Users This section describes briefly how to get started if you wish to use an SNMP manager once you have installed and powered up the Module It assumes you are already familiar with SNMP management Refer to the sections which follow for more details Appendix A contains more information about IP and IPX addresses m If you are using the IPX protocol the Module will be allocated an IPX address automatically You can start the SNMP manager and begin managing the stack m If you are using IP and have a BootP server on your network the IP parameters will be automatically loaded and brought into use m If you are using IP and no BootP server you will need to configure the
116. urity Monitor Secure Manager Specialist Security Monitor Serial Port Enabled Enabled Enabled Enabled Enabled Remote Telnet Enabled Disabled Enabled Enabled 9 Enabled Community SNMP Enabled 9 9 Enabled 6 Enabled 9 Enabled Enabled 9 OK CANCEL Figure 3 10 Local Security Screen The Local Security screen shows a table displaying every combination of access method serial port Telnet or SNMP and access level For example the top left choice field shows whether serial port access by users with monitor access level is enabled or disabled The access levels are defined as Monitor This allows the user to view the essential operations of the stack and to establish whether or not the stack is operating correctly A user at this level cannot change the operating parameters of the stack or gain access to any of the setup menus m Secure Monitor In this implementation Secure Monitor has the same rights as Monitor m Manager This allows the user to monitor and change the operational parameters of the stack The user cannot create or delete other users re initialize the stack or download a software image DUA1663 0BAA03 DUA1663 0BAA03 User Access Level 3 19 Specialist In this implementation Specialist has the same rights as Manager Security This level of security allows a user access to all the management operations Thi
117. y when the network has entered an abnormal state The console can then use more information from the probe such as history information and packet capture to perform additional diagnoses 3Com Transcend RMON SmartAgents However RMON does require one probe per LAN segment segments are separated by bridges or routers and standalone RMON probes have traditionally been expensive Therefore 3Com s approach has been to build an inexpensive RMON probe into the Transcend SmartAgent in each hub device This allows RMON to be widely deployed around the network without costing more than traditional network management One other problem with standalone RMON probes is that they are passive able to monitor and report but nothing more Placing probe functionality inside the network device allows integration of RMON with normal device management to allow proactive management For example statistics can be related to individual hub ports and the hub can take autonomous actions such as disabling a port temporarily or permanently if errors on that port exceed a pre defined threshold DUA1663 0BAA03 DUA1663 0BAA03 Benefits of RMON E 3 Also since a probe needs to be able to see all traffic a standalone probe has to be attached to a non secure hub port Implementing RMON in the hub means all hub ports can have security features enabled Integrating RMON into Transcend SmartAgents also allows other features to be incorporated to make RMON easi
118. y up to 9600 bps 49 89 627 32 188 up to 9600 bps 49 89 627 32 189 Hong Kong up to 14400 bps 852 537 5608 B 2 APPENDIX B TECHNICAL SUPPORT Country Data Rate Telephone Number Italy fee required up to 14400 bps 39 2 273 00680 Japan up to 14400 bps 81 3 3345 7266 Singapore up to 14400 bps 65 534 5693 Taiwan up to 14400 bps 886 2 377 5838 U K up to 28800 bps 44 1442 278278 U S up to 28800 bps 1 408 980 8204 Access by ISDN ISDN users can dial in to 3ComBBS using a digital modem for fast access up to 56 Kbps To access 3ComBBS using ISDN dial the following number 408 654 2703 World Wide Web Site Access the latest networking information on 3Com s World Wide Web site by entering our URL into your Internet browser http www 3Com com This service features news and information about 3Com products customer service and support 3Com s latest news releases selected articles from 3TECH 3Com s award winning technical journal and more ThreeComForum on CompuServe 1 ThreeComForum is a CompuServe based service containing patches software drivers and technical articles about all 3Com products as well as an interactive forum for technical questions To use ThreeComForum you need a CompuServe account To use ThreeComForum Log on to CompuServe 2 Entergo threecom 3 Press Return to see the Ask3Com main menu DUA1663 0BAA03 Support from Your Network Supplier B 3

SuperStack II Hub 10 Management User Guide

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