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Cisco Catalyst 4000 series Hardware Troubleshoot

Cisco Catalyst 4000 series Hardware Troubleshoot

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See also: Reference Manual , Manual
Hardware Troubleshoot for Catalyst
4000/4912/2980G/2948G Series Switches
Document ID: 18935
Interactive: This document offers customized analysis of your Cisco
device.
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Preparation for Troubleshooting Hardware on Catalyst Switches
Online Troubleshooting Tools
Catalyst 4000 Family Troubleshooting Procedures
General Problem Solving Model
General Problem Solving Flow Chart
Common Problems
Symptom Description
System/Supervisor/Module Problems and Steps to Resolve Them
Supervisor Crashes and Steps to Resolve Them
Misleading Problems
show Command Descriptions
Related Information
Introduction
This document provides troubleshooting procedures on how to diagnose hardware problems on Catalyst 4000
family switches. The Catalyst 4000 family includes the 4003 and 4006 modular chassis and the 2948G,
2980G, and 4912G fixed models. The naming conventions for the Catalyst 4000 and Catalyst 2900 can be
very confusing. Refer to Understanding Catalyst 2900 and Catalyst 4000 Naming Conventions for more
information on how to help clarify these issues.
The goal is to help Cisco customers identify and fix some basic hardware issues, or to perform more extensive
troubleshooting before you contact Cisco Technical Support. An orderly troubleshooting process with the
collection of specific diagnostics ensures that information necessary to the resolution of the problem is not
lost. If you refine the scope of the problem, this saves valuable time in the search for a solution.
Prerequisites
Requirements
Cisco recommends that you have knowledge of these topics:
•
Catalyst 4000 Command Reference
•
How LAN Switches Work

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Summary of Contents for Cisco Catalyst 4000 series

  • Page 1 The goal is to help Cisco customers identify and fix some basic hardware issues, or to perform more extensive troubleshooting before you contact Cisco Technical Support. An orderly troubleshooting process with the collection of specific diagnostics ensures that information necessary to the resolution of the problem is not lost.
  • Page 2 Online Troubleshooting Tools Cisco has a variety of troubleshooting tools and resources in order to help you interpret switch output, determine hardware software compatibility, track bugs, and search field notices. These tools and resources are referenced throughout this document: •...
  • Page 3 Hidden Commands Some commands presented in this document are known as hidden, which means that they cannot be parsed with a "?", and you cannot Tab in order to complete. When a hidden command is suggested in this document, simply gather the output and send it to the TAC engineer, if you open a case. It is possible that this output is useful in solving your case.

  • Page 4: Common Problems

    ♦ What device is connected to the switch ports that experiences the problem? ♦ When did this problem first occur and has it occurred more than once? ♦ What happened at the time the problem was first noticed? Is there anything unique about traffic conditions at that time of day? For example, was this a peak time for traffic? ♦...
  • Page 5 • show cdp neighbors detail If you have the output of the supported commands from your Cisco device, you can use the Output Interpreter (registered customers only) to display potential issues and fixes. In order to use Output Interpreter (registered customers only) , you must be a registered user, be logged in, and have JavaScript enabled.
  • Page 6 If the end device is a Cisco router or switch, and Cisco Discovery Protocol (CDP) is enabled, issue the show cdp neighbor detail command in order to identify the device, remote interface type, and remote IP address.
  • Page 7 ◊ Remove the module and inspect for bent pins. Reseat the module, firmly press down the ejector levers, and tighten the captive installation screws. If the output of the show module command status is still faulty, try the module in another slot. Slot 2 accepts line cards or a supervisor engine.
  • Page 8 The show port <mod/port> command can show Late−Coll, Align−Err, FCS−Err, Xmit−Err, and Rcv−Err errors. Refer to the the Show Port for CatOS and Show Interfaces for Cisco IOS section of Troubleshooting Switch Port Problems for more informaiton on these errors and possible causes.
  • Page 9 2002 Jan 19 14:59:23 %PAGP−5−PORTTOSTP:Port 2/11 joined bridge port 2/11 If these messages occur repeatedly on certain ports, refer to these document for possible causes: ♦ Common CatOS Error Messages on Catalyst 4000 Series Switches ♦ Common CatOS Error Messages on Catalyst 5000/5500 Series Switches ♦...
  • Page 10 If you have the output of the supported commands from your Cisco device, you can use the Output Interpreter (registered customers only) in order to display potential issues and fixes. In order to use Output Interpreter (registered customers only) , you must be a registered user, be logged in, and have JavaScript enabled.
  • Page 11 Set the config−register to boot from Flash. Cat4000−c> (enable) set boot config−register 0x2102 Configuration register is 0x2102 ignore−config: disabled auto−config: non−recurring console baud: 9600 boot: image specified by the boot system commands If you end in rommon or boot mode during the upgrade, refer to Recovering Catalyst Switches Running CatOS from Booting Failures for more information.
  • Page 12 Note: The Catalyst 4006 requires two power supplies installed to operate the switch and the third is for redundancy. Refer to Module Overview for more information. Inspect the power supplies. Make sure there is power applied to both units. If a redundant power supply is installed but has no power, the show system command output shows that the power supply status and sys−status is faulty.
  • Page 13 Poor performance is often perceived to be a hardware issue, but this is usually not the case. When customers describe to Cisco Technical Support that users on a particular switch experience slow performance, this often turns out to be related to connectivity problems, software misconfiguration, or problems elsewhere on the network.
  • Page 14 Capture the show config and show logging buffer 1023 command output. The show config command shows only the non−default configuration changes. Ideally, every time you make a change, you should have backed−up the configuration to use as a comparison. Issue the show config command in order to possibly associate a configuration change with the behavior you experience.
  • Page 15 Getting system error messages As mentioned in the Introduction of this document, Cisco has a suite of online diagnostic tools to help you determine hw/sw compatibility, interpret output, and decode errors. One of these tools is the Error Message Decoder.
  • Page 16 If you have the output of the supported commands from your Cisco device, you can use Output Interpreter (registered customers only) in order to display potential issues and fixes. In order to use Output Interpreter (registered customers only) , you must be a registered user, be logged in, and have JavaScript enabled.
  • Page 17 Should all the previous troubleshooting steps fail to diagnose the problem, capture these hidden commands, as well as the other commands in the previous steps, and open a case with the Cisco Technical Support: ♦...
  • Page 18 Refer to Table 2−82: show version Command Output Fields for more information. Cat4000−c> (enable) show version WS−C4006 Software, Version NmpSW: 6.3(1) Copyright (c) 1995−2001 by Cisco Systems, Inc. NMP S/W compiled on Jul 24 2001, 12:55:29 GSP S/W compiled on Jul 24 2001, 10:36:29 System Bootstrap Version: 5.4(1)

  • Page 19: Show Module

    Mod Port Model Serial # Versions −−− −−−− −−−−−−−−−− −−−−−−−−−−−−−−−−−−−− −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− WS−X4013 JAB04380209 Hw : 2.0 Gsp: 6.3(1.0) Nmp: 6.3(1) WS−X4232−L3 JAB045004AA Hw : 1.5 WS−X4424−GB−RJ45 JAB0514071N Hw : 0.7 WS−X4306 JAB02400048 Hw : 0.2 DRAM FLASH NVRAM Module Total Used Free Total...

  • Page 20: Show Config

    1 .. ffffffff 4e88958b 42a97c 4106492 Aug 17 2001 16:22:52 cat4000.6−3n 2 .. ffffffff b965ace8 78e71c 3554592 Nov 28 2001 10:38:33 cat4000.5−5n 3 .. ffffffff 70a608c8 b8fa9c 4199168 DEC 07 2001 10:30:01 cat4000−k9.n 4 .. ffffffff e873ea40 f0b224 3651336 DEC 11 2001 12:26:20 cat4000.5−5n 216540 bytes available (15512100 bytes used) Cat4000−c>...
  • Page 21 #mls set mls nde disable #port channel set port channel 1/1−2 100 #module 1 : 2−port 1000BaseX Supervisor set udld enable 1/1 set port channel 1/1−2 mode desirable silent #module 2 : 34−port Router Switch Card #module 3 : 24−port 10/100/1000 Ethernet set vlan 150 #module 4 empty #module 5 : 6−port 1000BaseX Ethernet...

  • Page 22: Show System

    Module 2 : 34−port Router Switch Card Status: (. = Pass, F = Fail, U = Unknown) Eeprom: . CX1000 Regs: Ports 3−11 Ports 12−19 Ports 20−27 : . Ports 28−34 : . CX1000 Sram: Ports 3−11 Ports 12−19 Ports 20−27 : . Ports 28−34 : .

  • Page 23: Show Time

    Decoder, Bug Toolkit, and other resources described under the Prerequisites section in this document. Also, refer to Common CatOS Error Messages on Catalyst 4000 Series Switches for more information. Refer to the show logging buffer 1023 command for more information: Cat4000−c>...
  • Page 24 2002 Jan 23 11:14:54 %PAGP−5−PORTTOSTP:Port 3/9 joined bridge port 3/9 2002 Jan 23 11:15:14 %SYS−5−MOD_OK:Module 2 is online 2002 Jan 23 11:15:23 %PAGP−5−PORTFROMSTP:Port 3/9 left bridge port 3/9 2002 Jan 23 11:15:30 %PAGP−5−PORTTOSTP:Port 2/1 joined bridge port 2/1 2002 Jan 23 11:15:30 %PAGP−5−PORTTOSTP:Port 2/2 joined bridge port 2/2 2002 Jan 23 11:15:41 %PAGP−5−PORTTOSTP:Port 3/9 joined bridge port 3/9 2002 Jan 23 11:17:19 %PAGP−5−PORTFROMSTP:Port 3/9 left bridge port 3/9 2002 Jan 23 11:17:37 %PAGP−5−PORTTOSTP:Port 3/9 joined bridge port 3/9...
  • Page 25 8188 26039 1000 0.80% 0.00% 0.00% −2 pinggateA 43007 876770 1000 0.44% 0.00% 0.00% −2 Authenticator_S 0.00% 0.00% 0.00% −2 dot1x_rx 3423 57501 1000 0.32% 0.00% 0.00% −2 Backend_Rx 39173 577158 1000 0.09% 0.00% 0.00% −2 Backend_SM 143 642792 9511281 34000 2.28% 2.00%...
  • Page 26 none none − − − − − Port Security Violation Shutdown−Time Age−Time Max−Addr Trap IfIndex −−−−− −−−−−−−− −−−−−−−−− −−−−−−−−−−−−− −−−−−−−− −−−−−−−− −−−−−−−− −−−−−−− disabled shutdown 1 disabled Port Num−Addr Secure−Src−Addr Age−Left Last−Src−Addr Shutdown/Time−Left −−−−− −−−−−−−− −−−−−−−−−−−−−−−−− −−−−−−−− −−−−−−−−−−−−−−−−− −−−−−−−−−−−−−−−−−− − −...

  • Page 27: Show Counters

    This command shows details about remote Cisco devices using CDP. This is one quick way to get the IP address and interface of a Cisco device on any given switchport. Refer to the show cdp neighbors detail commands for more information.
  • Page 28 Capabilities: ROUTER Version: Cisco Internetwork Operating System Software IOS (tm) L3 Switch/Router Software (CAT4232−IN−M), Version 12.0(14)W5(20) Copyright (c) 1986−2001 by cisco Systems, Inc. Compiled Thu 01−Mar−01 18:18 by integ Platform: cisco Cat4232L3 Port−ID (Port on Neighbors's Device): GigabitEthernet3 VTP Management Domain: unknown...

  • Page 29: Show Log

    −−−−− −−−−−−−− −−−−−−−−− −−−−−−−− −−−−−−−−−− −−−−−−−−−− Total Cat4000−c> (enable) show log This command displays the error log for the system or a specific module. If there has been a switch reset or crash, the stack information necessary to determine the cause of the switch crash is displayed here. Refer to the show log command for more information.

  • Page 30: Show Tech−Support

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This manual is also suitable for:

Catalyst 2980g seriesCatalyst 4912 seriesCatalyst 2948g series

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