Avaya Troubleshooting Routers Průvodce řešením problémů

Part No. 117379-A Rev. ASeptember 1997BayRS Version 12.00Site Manager Software Version 6.00 Troubleshooting Routers

x 117379-A Rev. A Displaying Event Messages Issued by Packet Capture ... B-31Using a Sun Workstation or D

Troubleshooting Routers5-22 117379-A Rev. ATroubleshooting a Synchronous ConnectionThis section assumes that you have isolated a problem to a synchron

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-23• wfSyncLackRescRx (get wfSyncEntry.42.*) and wfSyncLackRescRx (get wfSyncEntry.43.*)This

Troubleshooting Routers5-24 117379-A Rev. AChecking the Address Format (Bay Networks Standard Only)If the router is running Version 7.0 or later of th

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-25If transmission and reception statistics increment equally without errors, conduct a loop

Troubleshooting Routers5-26 117379-A Rev. ATroubleshooting the Internal Clock Settings (Lab Environments Only)If you are using crossover cables to con

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-27Troubleshooting a Token Ring ConnectionThis section assumes that you have isolated a prob

Troubleshooting Routers5-28 117379-A Rev. A2. If you are using the Technician Interface, enter the following command to list the instances of the wfTo

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-29Troubleshooting Other Data Link Layer ProtocolsThis section assumes that you have isolate

Troubleshooting Routers5-30 117379-A Rev. A5. Verify the configuration parameters.6. Use Packet Capture and a network analyzer to check the segments in

117379-A Rev. A 6-1Chapter 6Troubleshooting a Network Layer ProblemThis chapter describes how to solve network layer problems. It assumes that you tha

117379-A Rev. A xi Figures Figure 1-1. Filtering Parameters Window ...1-6Figure 3-1.

Troubleshooting Routers6-2 117379-A Rev. ATroubleshooting AppleTalkThis section assumes that you have isolated a problem to AppleTalk. If not, refer t

Troubleshooting a Network Layer Problem117379-A Rev. A 6-35. Verify the configuration parameters.6. Use Packet Capture and a network analyzer to check

Troubleshooting Routers6-4 117379-A Rev. AStatic Configuration Conflict Event MessageThe node number associated with the interface is already being used

Troubleshooting a Network Layer Problem117379-A Rev. A 6-5The Technician Interface command is as follows:get wfBrSr.*.04.Use the Technician Interface

Troubleshooting Routers6-6 117379-A Rev. ATroubleshooting IPThis section assumes that you have isolated a problem to IP. If not, refer to Chapter 2 to

Troubleshooting a Network Layer Problem117379-A Rev. A 6-7Example$ get wfIpBase.*.0wfIpBase.wfIpBaseCreate.0 = 1wfIpBase.wfIpBaseEnable.0 = 1wfIpBase.

Troubleshooting Routers6-8 117379-A Rev. ARefer to one of the following sections if it pertains to your problem:• “Troubleshooting Telnet, FTP, and TF

Troubleshooting a Network Layer Problem117379-A Rev. A 6-9The Disable attribute shows whether the protocol is enabled (1) or disabled (2).3. Ping your

Troubleshooting Routers6-10 117379-A Rev. A• “Endstation Can Ping Devices on the Same Segment, but Cannot Ping the Router”• “Endstation Can Ping Local

Troubleshooting a Network Layer Problem117379-A Rev. A 6-115. Enter the Technician Interface loadmap <slot_no.> command for each slot and verify

Troubleshooting Routers6-12 117379-A Rev. ANetwork Unreachable MessageVerify that the endstation’s configuration includes a default gateway. If an en

Troubleshooting a Network Layer Problem117379-A Rev. A 6-13Figure 6-1. Comparing the Endstation and Router Configurations The router uses the subnet ma

Troubleshooting Routers6-14 117379-A Rev. AEndstation Can Ping Local and Remote Interfaces on the Router, but Cannot Ping a Remote StationIf the endst

Troubleshooting a Network Layer Problem117379-A Rev. A 6-15Troubleshooting OSPFTo troubleshoot an OSPF routing problem, do the following:1. Use the Ev

Troubleshooting Routers6-16 117379-A Rev. AThe Technician Interface displays the table in the following format:wfIpBaseRtEntry.wfIpBaseRouteNextHop.&l

Troubleshooting a Network Layer Problem117379-A Rev. A 6-172. Make sure that the IPX routing software is activated. To do this, use the Statistics Man

Troubleshooting Routers6-18 117379-A Rev. AExample$show ipx circuitIPX Circuit Configuration Information (ALL)----------------------------------------

Troubleshooting a Network Layer Problem117379-A Rev. A 6-19Exampleshow ipx ripIPX RIP Interface Record Configuration Information (All)----------------

Troubleshooting Routers6-20 117379-A Rev. AExample$show ipx route find 0x00000986IPX Routing Table Information-----------------------------Destination

Troubleshooting a Network Layer Problem117379-A Rev. A 6-21Troubleshooting OSIThis section assumes that you have isolated a problem to OSI. If not, re

117379-A Rev. A xiii Tables Table 1-1. Technician Interface Event Message Filters ...1-7Table 1-2. Example

Troubleshooting Routers6-22 117379-A Rev. AThis command allows you to display OSI database information for a particular slot in the router. The displa

Troubleshooting a Network Layer Problem117379-A Rev. A 6-234. To display the dynamic adjacency ID, use the osiadjs alias. The alias definition is as fo

Troubleshooting Routers6-24 117379-A Rev. Ac. Determine how PPP is negotiating during the connection.During a successful connection, the control proto

Troubleshooting a Network Layer Problem117379-A Rev. A 6-25b. Check the slave site’s routing table for the routes it learned from the master site. Do

Troubleshooting Routers6-26 117379-A Rev. AWhen the router detects that DSR is in the on state (positive voltage), it brings DTR high regardless of th

Troubleshooting a Network Layer Problem117379-A Rev. A 6-272. Disconnect the local and remote CSUs from the DCE, and use a breakout box to verify whet

Troubleshooting Routers6-28 117379-A Rev. AThe Technician Interface command is as follows:log -fftwid -eISDN -eISDN_BRI -eSWSERV -s<slot_no.>Exa

Troubleshooting a Network Layer Problem117379-A Rev. A 6-29Example# 11: mm/dd/yy 03:15:49.517 INFO SLOT 1 SWSERV Code: 136ISDN Configured for swi

Troubleshooting Routers6-30 117379-A Rev. ATroubleshooting Other Network Layer ProtocolsThis section assumes that you have isolated a problem to a net

Troubleshooting a Network Layer Problem117379-A Rev. A 6-313. Check the values of the following statistics twice and compare them to determine whether

117379-A Rev. A 7-1Chapter 7Troubleshooting a Site Manager ProblemThis chapter describes how to solve Site Manager problems. Site Manager Won’t StartT

Troubleshooting Routers7-2 117379-A Rev. ACannot Find File MessageIf a message like the one in Figure 7-1 states that the application cannot find the W

Troubleshooting a Site Manager Problem117379-A Rev. A 7-33. Make sure that the environment variable PATH contains only the path to the protocol stack

Troubleshooting Routers7-4 117379-A Rev. A3. Enter the wfchkinst command to verify the installation.4. Verify that you updated the /etc/services file c

Troubleshooting a Site Manager Problem117379-A Rev. A 7-5Cannot Establish a Site Manager Session with the RouterIf you cannot establish a connection f

Troubleshooting Routers7-6 117379-A Rev. AUsing the Technician Interface to Enable AccessEnable SNMP access as follows:1. Enter the following Technici

Troubleshooting a Site Manager Problem117379-A Rev. A 7-7Cannot Connect Site Manager Running on a PCTroubleshoot Site Manager connectivity problems on

Troubleshooting Routers7-8 117379-A Rev. ACannot Connect Site Manager Running on a UNIX WorkstationTroubleshoot Site Manager connectivity problems on

Troubleshooting a Site Manager Problem117379-A Rev. A 7-9Target Does Not Respond (or Similar Message)When the destination of the ping request fails to

117379-A Rev. A xv About This Guide If you are responsible for isolating and solving problems associated with Bay Networks ® routers, read this gui

117379-A Rev. A 8-1Chapter 8Getting HelpThis chapter explains how to get help from Bay Networks when you are unable to resolve a problem using the doc

Troubleshooting Routers8-2 117379-A Rev. A3. What is the router’s serial number?Enter the Technician Interface command get wfHwBase.3.0 to display the

Getting Help117379-A Rev. A 8-3Sending and Retrieving FilesSending your configuration files, traces, and router event logs can help Bay Networks to isol

Troubleshooting Routers8-4 117379-A Rev. A7. Enter the following command to specify a binary transmission:bin8.Enter put <filename> if you are se

117379-A Rev. A A-1 Appendix AReading the Event LogThis appendix provides examples and explanations of the descriptive text in event messages and debu

Troubleshooting RoutersA-2 117379-A Rev. ASystem StartupThe following sample message is from a log of a Series 7 router after it was restarted with th

Reading the Event Log117379-A Rev. A A-3 Each slot transmits BofL requests via the backplane to the other slots in the router in order to determine wh

Troubleshooting RoutersA-4 117379-A Rev. AThe software running in slot 2 synchronized the system clock (WCLCK) with the other slots in the router.@ 4

Reading the Event Log117379-A Rev. A A-5 @ 67: mm/dd/yy 11:48:34.701 DEBUG # 2 GAME ( 84) FWD [ 2-0008] (a0000013->90000011): down=10000

Troubleshooting Routersxvi 117379-A Rev. A Before You Begin Before using this guide to solve a problem, see the following documents: • Release Notes

Troubleshooting RoutersA-6 117379-A Rev. A@ 86: mm/dd/yy 11:48:35.740 DEBUG # 2 GAME ( 23) SOLO (0x00057): election opening 30000000/300000

Reading the Event Log117379-A Rev. A A-7 @ 115: mm/dd/yy 11:48:36.631 DEBUG # 2 GAME ( 23) SOLO (0x00098): election opening 30000000/3000000

Troubleshooting RoutersA-8 117379-A Rev. A@ 137: mm/dd/yy 11:48:38.646 DEBUG # 2 LOADER ( 15) Loader starting application drs.exe, address 0x3

Reading the Event Log117379-A Rev. A A-9 SNMP loaded successfully from the router software image and the SNMP gate soloist SNMP_START elects a slot to

Troubleshooting RoutersA-10 117379-A Rev. AThe transceiver on slot 2, connector 1, does not have SQE (signal quality error) enabled. It reports the ab

Reading the Event Log117379-A Rev. A A-11 @ 217: mm/dd/yy 11:48:45.494 DEBUG # 2 DP ( 34) ISAP 0x30800 registered on cct 1.@ 218: mm/dd/y

Troubleshooting RoutersA-12 117379-A Rev. A@ 244: mm/dd/yy 11:48:50.045 DEBUG # 3 GAME ( 97) SOLO (0x00015): election LOST 0xb0000000 (repl=

Reading the Event Log117379-A Rev. A A-13 @ 282: mm/dd/yy 11:48:51.326 DEBUG # 3 LOADER ( 15) Loader starting application tftp.exe, address 0x

Troubleshooting RoutersA-14 117379-A Rev. AAppleTalk (entity AT) loads successfully and initializes on slot 3. The operating system elects to run the

Reading the Event Log117379-A Rev. A A-15 The object wfProtocols is the protocol bit-map object. Each attribute is a different protocol. Every time yo

About This Guide 117379-A Rev. A xvii Conventions angle brackets (< >) Indicate that you choose the text to enter based on the description ins

Troubleshooting RoutersA-16 117379-A Rev. A@ 367: mm/dd/yy 11:50:47.660 INFO # 3 TCP ( 6) TCP Opened: 0.0.0.0,23 - 0.0.0.0,0 TCB: 0x30530

Reading the Event Log117379-A Rev. A A-17 Dial-on-Demand Raise DTR LogThe following log shows a successful dial-on-demand connection between the COM2

Troubleshooting RoutersA-18 117379-A Rev. AThe following messages appear even if you did not connect a modem to the router. Unlike V.25bis, Raise DTR

Reading the Event Log117379-A Rev. A A-19 The PPP link over the dial-on-demand circuit establishes an LCP (Link Control Protocol) connection. The mess

Troubleshooting RoutersA-20 117379-A Rev. AThe router detected that the modem dropped DSR, indicating that the remote link is lost.# 72: mm/dd/yy 1

Reading the Event Log117379-A Rev. A A-21 Connector COM2: FSM Event: RDTR_EVENT_CCT_UP(1); isdn flags: 0x0# 83: mm/dd/yy 14:15:58.401 INFO SLO

Troubleshooting RoutersA-22 117379-A Rev. ADial-on-Demand V.25bisThe following log shows a successful dial-on-demand connection between the COM1 port

Reading the Event Log117379-A Rev. A A-23 The port uses the CTS (clear to send) pin signal to determine whether a modem is present.# 14: mm/dd/yy 1

Troubleshooting RoutersA-24 117379-A Rev. ASW Sent you are cc 2 message to line 1The line is given a valid circuit number (2) in order to be activated

Reading the Event Log117379-A Rev. A A-25 The router now waits for the modem to raise DSR. It detects that the modem dropped CTS. The modem does this

Troubleshooting Routersxviii 117379-A Rev. A Acronyms AAL ATM adaptation layerACE Advanced Communications EngineALC adaptation layer controlAMI alter

Troubleshooting RoutersA-26 117379-A Rev. A# 80: mm/dd/yy 13:13:25.930 INFO SLOT 2 PPP Code: 28LCP up on circuit 2.# 81: mm/dd/yy 13:

Reading the Event Log117379-A Rev. A A-27 # 96: mm/dd/yy 13:13:51.572 INFO SLOT 2 SYNC Code: 9Connector COM1 enabled.# 97: mm/dd/yy 1

Troubleshooting RoutersA-28 117379-A Rev. AMCT1 Log Information in a Lab EnvironmentThe log messages in this section show what happens when you access

Reading the Event Log117379-A Rev. A A-29 Found dead line 0x400b4e3 at offset 0Last line 0x400b4e3 in cct 3 died, killing circuit gateDP killing CC ga

Troubleshooting RoutersA-30 117379-A Rev. ATo disable payload loopback, click on FDL Disable Payload in the Line Tests window. (FDL stands for facilit

Reading the Event Log117379-A Rev. A A-31 # 8: mm/dd/yy 10:38:39.367 DEBUG SLOT 4 PCAP Code: 67interface became local - line 10904101in

Troubleshooting RoutersA-32 117379-A Rev. AIf you click on the FDL Disable Line Loop option, the LED turns off and the following log messages appear:#

Reading the Event Log117379-A Rev. A A-33 The same unscheduled message shown in line 8 earlier applies to FDL line loops IA and IB.If you click on FDL

Troubleshooting RoutersA-34 117379-A Rev. AConnector COM1, Logical Line 1 time_slot = 3.Connector COM1, Logical Line 1 time_slot = 4.Connector COM1, L

Reading the Event Log117379-A Rev. A A-35 [3:1]$ s wfDs1E1ConfigEntry.wfDs1E1ConfigLineType.905102 3;commitThe following command displays the new port

About This Guide 117379-A Rev. A xix DP Data PathDPRAM dual port RAMDR designated routerDS directory serviceDS1E1 multichannel T1/E1 driver serviceD

Troubleshooting RoutersA-36 117379-A Rev. A------------------ 2 entries in table.If you configure the primary clock source as the port 2 loop and the s

Reading the Event Log117379-A Rev. A A-37

117379-A Rev. A B-1Appendix BUsing the Technician Interface to Configure andRun Packet CaptureThis appendix describes how to use the Technician Interfa

Troubleshooting RoutersB-2 117379-A Rev. AOverviewPacket Capture allows you to examine packets passing through selected circuits on a Bay Networks rou

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-32. Establish a remote connection to the router using FTP, TFTP, X

Troubleshooting RoutersB-4 117379-A Rev. A4. Establish an FTP, TFTP, or XMODEM connection to the router from a DOS PC or Sun workstation to transfer a

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-5Getting StartedThis section describes how to start and stop Packe

Troubleshooting RoutersB-6 117379-A Rev. AIf you want Packet Capture to copy packets from circuits in a single I/O module, use the associated slot mas

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-7ExampleCapture packets from the I/O modules in slots 3, 4, 8, and

ii 117379-A Rev. A4401 Great America Parkway 8 Federal StreetSanta Clara, CA 95054 Billerica, MA 01821 Copyright © 1997 Bay Networks, Inc. All rights

Troubleshooting Routersxx 117379-A Rev. A ISAP internal services access pointISDN Integrated Services Digital NetworkISO International Organization f

Troubleshooting RoutersB-8 117379-A Rev. AGet the number of the logical line from which you want to copy packets as follows:1. Enter the following Tec

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-9ExampleEnter the following command to create an instance for logi

Troubleshooting RoutersB-10 117379-A Rev. A• HSSIget wfHssiEntry.60.<slot>.<connector>60 represents the wfHssiLineNumber attribute.• ISDN

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-11Allocating Memory for the Packet Capture FileYou must allocate m

Troubleshooting RoutersB-12 117379-A Rev. AIf less than 200 KB of free memory remains after Packet Capture starts, it sends a warning message to the l

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-13ExampleEnter the following command to enable Packet Capture for

Troubleshooting RoutersB-14 117379-A Rev. AExampleEnter the following command to enable Packet Capture for line number 202101:set wfPktCaptureEntry.5.

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-15-- The number of bytes in the packet-- The direction of the pack

Troubleshooting RoutersB-16 117379-A Rev. AExample 2Enter the following command to display all packets starting with the second packet in the Packet C

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-17Example 4Enter the following command to display only the second

About This Guide 117379-A Rev. A xxi PROM programmable read-only memoryPTP point-to-point (standard protocol)PVC permanent virtual circuitQENET Quad

Troubleshooting RoutersB-18 117379-A Rev. AUsing Optional FeaturesThe following sections describe how to use optional Packet Capture features:• “Config

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-19Configuring a Termination TriggerBy default, Packet Capture termi

Troubleshooting RoutersB-20 117379-A Rev. A<value> is one of the following:• 1 -- Packet Capture terminates when the Packet Capture file is full.

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-21Assigning FiltersRead this section if you want to specify a stri

Troubleshooting RoutersB-22 117379-A Rev. ASetting the Filter Response to a MatchEnter the following Technician Interface command to set the response

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-23Specifying the String to Compare with the Packet DataEnter the f

Troubleshooting RoutersB-24 117379-A Rev. ASpecifying the ReferenceEnter the following Technician Interface command to specify the Reference, which is

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-25Specifying the OffsetEnter the following Technician Interface co

Troubleshooting RoutersB-26 117379-A Rev. A• 22 for Transmit Filter 1Represents the wfPktCaptureTxFltr1Size attribute•33 for Transmit Filter 2Represen

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-27<value> is one of the following:• 1 -- Packet Capture will

Troubleshooting Routersxxii 117379-A Rev. A TPE twisted pair EthernetTTL time to liveULI upper-layer indicationUTP unshielded twisted pairVC virtual

Troubleshooting RoutersB-28 117379-A Rev. AExample 2This example starts and stops Packet Capture. The instructions are as follows:1. Start Packet Capt

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-293. Specify the number of bytes after the Reference with which to

Troubleshooting RoutersB-30 117379-A Rev. A5. Specify the string as the hexadecimal number ffffffffffff:set wfPktCaptureEntry.28.102101 0xffffffffffff

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-31wfPktCaptureEntry.wfPktCaptureRxFltr1Match.102101 = (nil)wfPktCa

Troubleshooting RoutersB-32 117379-A Rev. AGetting the Name of the Packet Capture FileTo get a Packet Capture file stored in the router’s memory, you m

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-33Enter the following commands at the command-line interface of th

Troubleshooting RoutersB-34 117379-A Rev. AEnter the following commands at the command-line interface of the Sun workstation:1. Issue the following co

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-35Using XMODEM to Transfer the FileEnter the following Technician

Troubleshooting RoutersB-36 117379-A Rev. AConverting a Packet Capture File to Network General Sniffer FormatYou can use the Packet Convert utility to

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-373. Access the directory containing the Packet Convert utility. 4

About This Guide 117379-A Rev. A xxiii Bay Networks Customer Service You can purchase a support contract from your Bay Networks distributor or autho

Troubleshooting RoutersB-38 117379-A Rev. A• “Packet Capture Parameter Descriptions”• “Media-Specific Instructions and Examples”• “Interpreting a Packe

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-39wfPktCaptureRxFltr2Offset = 25wfPktCaptureRxFltr2Ref = 26wfPktCa

Troubleshooting RoutersB-40 117379-A Rev. ABasic ParametersThe basic parameters are common to all Packet Capture configurations. The basic parameters d

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-41 Parameter: Disable Attribute Name: wfPktCaptureDisable Attribut

Troubleshooting RoutersB-42 117379-A Rev. A Parameter: Filename Attribute Name: wfPktCaptureFname Attribute Number: 4 Default: Set by Packet Capture c

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-43 Parameter: Line Number Attribute Name: wfPktCaptureLineNumber A

Troubleshooting RoutersB-44 117379-A Rev. A Parameter: Packet Size Attribute Name: wfPktCapturePktSize Attribute Number: 9 Default: None Range: 1 (32

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-45Trigger ParametersYou use triggers to stop copying packets when

Troubleshooting RoutersB-46 117379-A Rev. AIf you want Packet Capture to terminate when it matches data to a string you specify, use one of the follow

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-47 Parameter: TypePacket Capture supports four Type parameters. De

Troubleshooting RoutersB-48 117379-A Rev. A Parameter: OffsetPacket Capture supports four Offset parameters. Default: None Options: Limited to size of

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-49 Parameter: ReferencePacket Capture supports four Reference para

Troubleshooting RoutersB-50 117379-A Rev. A Parameter: SizePacket Capture supports four Size parameters. Default: None Options: Maximum of 16 bytes Fu

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-51 Parameter: GroupPacket Capture supports two Group parameters: o

Troubleshooting RoutersB-52 117379-A Rev. AAn example of a hexadecimal display of a CSMA/CD frame follows.Pkt# 10 mm/dd/yy 10:20:32.670 CSMACD 60 Rx00

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-53BisynchronousThe bisynchronous (BISYNC) protocol does not have a

Troubleshooting RoutersB-54 117379-A Rev. APassthruThe Passthru (PASS) protocol does not have a special data link filter offset. If you configure a data

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-55SDLCThe Synchronous Data Link Control (SDLC) protocol does not h

Troubleshooting RoutersB-56 117379-A Rev. AToken RingThe token ring physical medium has a data link filter offset of 14 bytes plus the routing informat

Using the Technician Interface to Configure and Run Packet Capture117379-A Rev. A B-57An example of a hexadecimal display of a HSSI frame follows:Pkt#

117379-A Rev. A 1-1 Chapter 1Introduction This chapter describes how to prevent router problems and prepare to troubleshoot. Preventing Problems The

Troubleshooting RoutersB-58 117379-A Rev. AExampleThe code for a single CSMA/CD interface on slot 2 using XCVR1 is 0000102101. Site Manager removes th

117379-A Rev. A C-1 Appendix CPacket ConfigurationThe config packet command enables you to configure the Packet Capture utility using the Technician Inte

Troubleshooting RoutersC-2 117379-A Rev. AUsing the Line Subcommandconfig packet line [<line_number>] configures packet capturing on the specified

Packet Configuration117379-A Rev. A C-3 5: Token Ring6: FDDI7: HSSI9: MCT113: ISDN D ChannelEnter media type by number: 1Enter slot number: 5Enter con

Troubleshooting RoutersC-4 117379-A Rev. APress return for current value or enter new value: 4Transmit Trigger Options-----------------------1: Stop C

Packet Configuration117379-A Rev. A C-5 Current value for Receive Filter Two Type is 3Press return for current value or enter new value: Packet Captur

117379-A Rev. A Index-1Symbols*, in get command, 1-17AACE32 memory limitations, 3-13adding VC gate w/GH event message, 5-6address format, synchronous,

Index-2 117379-A Rev. APROMs, 3-6bouncing MAC addresses, 6-11Breath of Life (BofL) errors, 3-17bridge ID, 6-4buffersallocating for Packet Capture, B-1

117379-A Rev. A Index-3dial-on-demand V.25bis event messages, A-23 to A-28digital signal, level 0 (DS0) channels, 5-20digital subscriber loops (DSLs),

Troubleshooting Routers1-2 117379-A Rev. A Reading the Release Notes and Relevant Documentation The release notes and the manuals that describe how t

Index-4 117379-A Rev. AGGAME forward (GFWD) message type, A-5GAME remote procedure call (GRPC) message type, A-5GAME. See Gate Access Management Entit

117379-A Rev. A Index-5line build out (LBO), MCT1, 5-21line coding, 5-20line number, B-7, B-8, B-43, B-57Line Tests option, MCT1, A-29line type, 5-20,

Index-6 117379-A Rev. Amodem, using to transfer files to Bay Networks, 8-3monitor script commands, 1-18multimode fiber, orange, 4-5munich.exe file, 5-21N

117379-A Rev. A Index-7starting, B-13terminating, B-13token ring, B-56trigger, B-19X.25, B-55parameters. See attributesPassthru, Packet Capture, B-54P

Index-8 117379-A Rev. AScreen Manager tool, 1-19script commands, 1-18SDLC, Packet Capture, B-55secret, CHAP, 6-29Seed Conflict message, AppleTalk, 6-3s

117379-A Rev. A Index-9See also Packet Capturetrace events, 1-7transmission (Tx) queue space shortage, 5-12transmission statistics not changing, 5-29,

wfPktCapture<Rx | Tx>Fltr<no.>Ref, B-24, B-49wfPktCapture<Rx | Tx>Fltr<no.>Size, B-25, B-50wfPktCapture<Rx | Tx>Fltr<

Introduction 117379-A Rev. A 1-3 Saving Your Configuration ChangesThe router overwrites the configuration changes in memory when it reboots. If you use

Troubleshooting Routers1-4 117379-A Rev. AHandling Flash Memory Cards to Prevent Static DamageAlways use an antistatic wrist strap when handling flash

Introduction117379-A Rev. A 1-5Using the System Log to Display Event MessagesThe processor that is running software in each slot maintains its own log

117379-A Rev. A iii Bay Networks, Inc. Software License Agreement NOTICE: Please carefully read this license agreement before copying or using the

Troubleshooting Routers1-6 117379-A Rev. AIf you want to save a log in ASCII format, choose File > Save Output to Disk from the Events Manager wind

Introduction117379-A Rev. A 1-7The Filtering Parameters window allows you to filter based on the severity of the event messages, the software entity re

Troubleshooting Routers1-8 117379-A Rev. AYou can specify filters for more than one severity type. The Events Manager’s Filter window allows you to sel

Introduction117379-A Rev. A 1-9However, displaying the debug messages can help you to understand the systematic process the software uses to load and

Troubleshooting Routers1-10 117379-A Rev. ADisplaying and Changing Configuration Settings and StatisticsThe router’s management information base (MIB)

Introduction117379-A Rev. A 1-11You assign each attribute a unique number called an attribute identifier. For example, you use 1 for list price, 2 for

Troubleshooting Routers1-12 117379-A Rev. ATable 1-2 presents the attributes and instances for the example object House. The attributes and instances

Introduction117379-A Rev. A 1-13Suppose you create several diverse objects and you want to organize them. You can create an object to organize and pro

Troubleshooting Routers1-14 117379-A Rev. AFor example, the object identifier of wfCSMACDMadr (the media access control address) is 10. When entering t

Introduction117379-A Rev. A 1-15To determine the format of an instance, search for the name of the object in the associated MIB file (<object>.mi

iv 117379-A Rev. A its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files,

Troubleshooting Routers1-16 117379-A Rev. AYou can use the following Technician Interface commands to access the MIB:• list displays the object names

Introduction117379-A Rev. A 1-17When entering a get command, you can use an asterisk (*) in place of an attribute to display all of the attribute valu

Troubleshooting Routers1-18 117379-A Rev. AThe advantage of using the Technician Interface scripts, the Statistics Manager, or the Configuration Manage

Introduction117379-A Rev. A 1-19Using the Statistics Manager to Access the MIBThe Statistics Manager tools allow you to monitor a router’s status and

Troubleshooting Routers1-20 117379-A Rev. AUsing the ping CommandThe ping command is available both from the Site Manager Administration menu and the

Introduction117379-A Rev. A 1-21Using Inbound Telnet to Access the Technician InterfaceVersions 7.60 and later allow you to use Telnet to establish a

Troubleshooting Routers1-22 117379-A Rev. ATaking a Snapshot of Your NetworkBay Networks recommends that you periodically gather and save the forwardi

Introduction117379-A Rev. A 1-23You can use any text editor to read the ASCII files, or print and organize them for later reference.A map of your netwo

Troubleshooting Routers1-24 117379-A Rev. APerforming One Corrective Task at a TimeAlways perform one corrective task at a time. Then, repeat the test

117379-A Rev. A 2-1Chapter 2Determining the Scope of a ProblemThis chapter poses the initial questions you should answer to narrow the cause of a prob

117379-A Rev. A v Contents About This Guide Before You Begin ...

Troubleshooting Routers2-2 117379-A Rev. A4. Are you using a workaround to prevent the symptoms from occurring? If so, what?Consideration of the worka

Determining the Scope of a Problem117379-A Rev. A 2-3• A single protocol on multiple ports in all slots running that protocol?If so, the problem is mo

117379-A Rev. A 3-1Chapter 3Troubleshooting an Operational ProblemThis chapter describes how to solve problems with the basic operation of the hardwar

Troubleshooting Routers3-2 117379-A Rev. ADamaged RouterIf you detect physical damage to the router, report the problem to the Bay Networks Technical

Troubleshooting an Operational Problem117379-A Rev. A 3-3To determine whether a fuse has blown in a BLN or BCN, and to isolate and replace a blown fus

Troubleshooting Routers3-4 117379-A Rev. A3. If you recently installed the router software image, make sure it is correct for the router type. For det

Troubleshooting an Operational Problem117379-A Rev. A 3-5Troubleshoot an ASN as follows:a. If the ASN is in a stack, make sure that the SPEX slot dial

Troubleshooting Routers3-6 117379-A Rev. AChecking the Boot PROMsMake sure that the boot PROM images are compatible with the router software image as

Troubleshooting an Operational Problem117379-A Rev. A 3-7If you specify the router software image and configuration files when booting the router, all p

vi 117379-A Rev. A Chapter 2 Determining the Scope of a ProblemChapter 3 Troubleshooting an Operational Problem Damaged Router ...

Troubleshooting Routers3-8 117379-A Rev. AIf the slots are operating with router software images from different volumes, do the following:1. Display t

Troubleshooting an Operational Problem117379-A Rev. A 3-9Verifying That the Configuration Files in Each Processor MatchTo display the source of the con

Troubleshooting Routers3-10 117379-A Rev. A3. Determine which configuration file you want to use. 4. Back up the unwanted configuration file.5. Remove the

Troubleshooting an Operational Problem117379-A Rev. A 3-114. Insert the flash memory card containing the router software image and configuration file int

Troubleshooting Routers3-12 117379-A Rev. ATo view the status of a flash memory card, display its directory. The directory display shows the amount of

Troubleshooting an Operational Problem117379-A Rev. A 3-13Thus, the amount of local memory available determines the maximum number of entries in a for

Troubleshooting Routers3-14 117379-A Rev. AThe Technician Interface displays the following:-- How much memory is available-- The starting program coun

Troubleshooting an Operational Problem117379-A Rev. A 3-15Example$ loadmap 2----------------------Loadmap from SLOT 2:------------------------> arp

Troubleshooting Routers3-16 117379-A Rev. A$ loadmap 2----------------------Loadmap from SLOT 2:------------------------> tms380.exe 0x3158ef

Troubleshooting an Operational Problem117379-A Rev. A 3-17Bad Forward Receive Buffer Checksum ErrorsAn event message beginning with buf= follows the m

117379-A Rev. A viiUpper-Layer Protocols Failing to Pass Packets ...5-6PVC Problems ...

Troubleshooting Routers3-18 117379-A Rev. AGo to the appropriate section to determine which slot sent the backplane BofL packet:• If the number 0x0f00

Troubleshooting an Operational Problem117379-A Rev. A 3-19Finding the Slot That Sent a Bad Packet That Was Not a BofL PacketFind the number of the slo

Troubleshooting Routers3-20 117379-A Rev. AFault MessageIf a software entity experiences a fault and fails to recover, do the following:1. Disable and

117379-A Rev. A 4-1Chapter 4Troubleshooting a Physical Media ProblemThis chapter describes how to solve physical media problems. It assumes that you h

Troubleshooting Routers4-2 117379-A Rev. AFor example, enter get wfCSMACDEntry.3.1.4 to display the state of Ethernet in slot 1, connector 4.You can u

Troubleshooting a Physical Media Problem117379-A Rev. A 4-3Respond to the State attribute values as follows:1. If the state of the interface in questi

Troubleshooting Routers4-4 117379-A Rev. A2. Make sure that both ends of the cable are firmly connected to the proper interfaces. 3. Check the LEDs on

Troubleshooting a Physical Media Problem117379-A Rev. A 4-5If the connection is FDDI or ATM Rx and Tx:a. Make sure you have cabled ports A and B corre

117379-A Rev. A 5-1Chapter 5Troubleshooting a Data Link Layer ProblemThis chapter describes how to solve data link layer problems. It assumes that you

viii 117379-A Rev. A Endstation Can Ping Devices on the Same Segment, but Cannot Ping the Router ...

Troubleshooting Routers5-2 117379-A Rev. ATroubleshooting an ATM ConnectionThis section assumes that you have isolated a problem to an ATM interface.

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-34. Redisplay the MIB objects in Table 5-1 after 1 minute; then, compare the values to dete

Troubleshooting Routers5-4 117379-A Rev. A5. Use the Events Manager or the Technician Interface to display the attributes associated with the MIB obje

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-5Dropped FramesTroubleshoot dropped frames as follows:1. Use the Events Manager or the Tech

Troubleshooting Routers5-6 117379-A Rev. A4. Match the error code in the message to the Error Code column in Table 5-5, and follow the associated inst

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-7PVC ProblemsFor PVC problems, do the following:1. If the connecting switch does not suppor

Troubleshooting Routers5-8 117379-A Rev. A3. Use the Events Manager or the Technician Interface to display the attributes associated with the MIB obje

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-9Troubleshooting an Ethernet ConnectionThis section assumes that you have isolated a proble

Troubleshooting Routers5-10 117379-A Rev. A• wfCSMACDOctetsRxOkThis shows the number of bytes received without error.• wfCSMACDFramesRxOkThis shows th

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-11• wfCSMACDBablErrorTxThis shows the number of frames transmitted that were larger than 15

117379-A Rev. A ix Chapter 8 Getting Help Reporting a Problem to the Bay Networks Technical Solutions Center ...8-1Sending and

Troubleshooting Routers5-12 117379-A Rev. ACheck the wfKernelEntry for the slot where the problem is occurring to determine whether buffers are availa

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-13• wfCSMACDCerrThis shows the number of Ethernet controller chip collision detections. Thi

Troubleshooting Routers5-14 117379-A Rev. AIf underflow errors or corrupted frames occur, enable the attribute wfCSMACDAlignmentMode, which determines

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-15• wfFDDIRingOverrunRx (get wfFddiEntry.21.*)This shows the number of logical link control

Troubleshooting Routers5-16 117379-A Rev. AThis state indicates that ports A and B connect to two different concentrators that connect to the same rin

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-17Troubleshooting a Frame Relay ConnectionThis section assumes that you have isolated a pro

Troubleshooting Routers5-18 117379-A Rev. AFrame Relay Switch Keeps Marking the Circuit as DownTroubleshoot as follows:1. Check the polling interval c

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-19Frame Relay Configured with LMI Invokes an Xoff StateIf a Frame Relay switch exceeds buffe

Troubleshooting Routers5-20 117379-A Rev. ATroubleshooting an MCT1 ConnectionThis section assumes that you have isolated a problem to a multichannel T

Troubleshooting a Data Link Layer Problem117379-A Rev. A 5-215. Watch the LEDs on the back of the MCT1 module. If the Sync LED keeps flashing, the line