Cisco Catalyst 4000 series Hardware Troubleshoot

[Page 1] Cisco Catalyst 4000 series

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 ...

[Page 2] Cisco Catalyst 4000 series

Components Used This document is not restricted to specific software and hardware versions. Conventions Refer to Cisco Technical Tips Conventions for more information on document conventions. Preparation for Troubleshooting Hardware on Catalyst Switc...

[Page 3] Cisco Catalyst 4000 series

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...

[Page 4] Cisco Catalyst 4000 series

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 c...

[Page 5] Cisco Catalyst 4000 series

Supervisor Crashes These problems can occur when the switch has reset, continually resets, or is down completely. Symptom Description This section discusses symptoms, troubleshooting procedures, and commands for Catalyst 4000 family switches. This se...

[Page 6] Cisco Catalyst 4000 series

Missing Software, or an Upgrade Failure, or from ROMMON Mode for more information on recovery. Receiving the "Failed to allocate session block" error message If you receive the Failed to allocate session block error message while you access...

[Page 7] Cisco Catalyst 4000 series

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...

[Page 8] Cisco Catalyst 4000 series

Verify port status and troubleshoot accordingly. Refer to the Port status shows not connected, faulty, disabled, inactive, or errdisable section of this document. 1. Capture the output of the show port <mod/port> , show mac <mod/port> , ...

[Page 9] Cisco Catalyst 4000 series

Getting continuous %PAGP−5 left/joined bridge messages Complete these steps: Capture the show port <mod/port>, show mac <mod/port>, and show spantree summary command output. System messages similar to these messages are informational, a...

[Page 10] Cisco Catalyst 4000 series

System/Supervisor/Module Problems and Steps to Resolve Them System, supervisor, and module problems occur when either system status LEDs indicate a problem, the supervisor or modules are not recognized or show faulty, or when users are experiencing p...

[Page 11] Cisco Catalyst 4000 series

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 sy...

[Page 12] Cisco Catalyst 4000 series

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 redun...

[Page 13] Cisco Catalyst 4000 series

bootup. Note any F for fail results. 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 show module status is still faulty, try the module in anoth...

[Page 14] Cisco Catalyst 4000 series

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 comparis...

[Page 15] Cisco Catalyst 4000 series

It is always recommended to keep the management or sc0 interface of the switch in a separate VLAN from the user data. Otherwise, any broadcast or multicast storm can flood the inband channel to the Network Management Processor (NMP), which needs to b...

[Page 16] Cisco Catalyst 4000 series

Messages and Recovery Procedures♦ Common CatOS Error Messages on Catalyst 4000 Series Switches♦ Supervisor Crashes and Steps to Resolve Them Supervisor crashes occur when the switch has reset, continually resets, or is down completely. These co...

[Page 17] Cisco Catalyst 4000 series

The show version command provides software version information to use for a bug search. For example, if you identify an exception in the show log command output, use the Bug Toolkit in order to search for bugs on the Catalyst 4000 and the exception. ...

[Page 18] Cisco Catalyst 4000 series

show Command Descriptions These table breaks down what show commands are used to help troubleshoot the different symptom types. Connectivity Problems System/Supervisor/Module Problems Supervisor Resets/Crashes show version show config show module sho...

[Page 19] Cisco Catalyst 4000 series

Mod Port Model Serial # Versions −−− −−−− −−−−−−−−−− −−−−−−−−−−−−−−−−−−−− −−−−−−−−−−−−−−−−−−−−−−−−−−−−...

[Page 20] Cisco Catalyst 4000 series

1 .. ffffffff 4e88958b 42a97c 17 4106492 Aug 17 2001 16:22:52 cat4000.6−3n 2 .. ffffffff b965ace8 78e71c 18 3554592 Nov 28 2001 10:38:33 cat4000.5−5n 3 .. ffffffff 70a608c8 b8fa9c 20 4199168 DEC 07 2001 10:30:01 cat4000−k9.n ...

[Page 21] Cisco Catalyst 4000 series

#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...

[Page 22] Cisco Catalyst 4000 series

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 : . Por...

[Page 23] Cisco Catalyst 4000 series

PS1−Type PS2−Type PS3−Type −−−−−−−−−−−− −−−−−−−−−−−− −−−−−−−−−−−− WS−C4008 WS−C4008 none Modem Baud Traffic Peak Peak−Time −−...

[Page 24] Cisco Catalyst 4000 series

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...

[Page 25] Cisco Catalyst 4000 series

37 8188 26039 1000 0.80% 0.00% 0.00% −2 pinggateA 38 43007 876770 1000 0.44% 0.00% 0.00% −2 Authenticator_S 39 0 1 0 0.00% 0.00% 0.00% −2 dot1x_rx ...

[Page 26] Cisco Catalyst 4000 series

3/9 none none − − − − − Port Security Violation Shutdown−Time Age−Time Max−Addr Trap IfIndex −−−−− −−−−−−−− −−−−−−−−− −−−−−−−�...

[Page 27] Cisco Catalyst 4000 series

Last−Time−Cleared −−−−−−−−−−−−−−−−−−−−−−−−−− Tue Jan 22 2002, 14:57:21 show counters <mod/port> This command displays hardware counters for the port and will vary depending on the type of ...

[Page 28] Cisco Catalyst 4000 series

Device−ID: 8−4006−L3 Device Addresses: IP Address: 127.0.0.3 Holdtime: 170 sec Capabilities: ROUTER Version: Cisco Internetwork Operating System Software IOS (tm) L3 Switch/Router Software (CAT4232−IN−M), Version 12.0(14)W5(20) RE Copyri...

[Page 29] Cisco Catalyst 4000 series

−−−−− −−−−−−−− −−−−−−−−− −−−−−−−− −−−−−−−−−− −−−−−−−−−− Total 0 0 0 3 3 Cat4000−c> (enable) show log This...

[Page 30] Cisco Catalyst 4000 series

Tue DEC 11 2001, 12:32:58 Module 3 Log: Reset Count: 12 Reset History: Wed Jan 23 2002, 11:14:34 Tue Jan 22 2002, 14:57:39 Mon DEC 24 2001, 13:56:53 Fri DEC 7 2001, 13:27:07 Mo...