Specifications

Troubleshooting Hardware and Related Issues on Catalyst 4500/4000 Switches Running Cisco IOS Software
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
Supervisor Engine or Module Problems
Supervisor Engine LED Is Red or Status Indicates Faulty
Switch Is in a Continuous
Boot Loop, Freezes or Halts During Boot, Is in ROMmon Mode, or Does Not Have the System Image
Standby Supervisor Engine Module Is Not Online or Status
Indicates Other
Switch Has Reset or Rebooted on Own
Upgrade ROMmon (PROM Upgrade) and Cisco IOS Software Issues
Ports 1/2 and 2/2 Do Not Function with Dual Supervisor Engines in 4507R
Supervisor Engine III That Runs Cisco IOS Software Release 12.1(11b)EW Ceases to Work or Unexpectedly Reboots
Supervisor Engine III or IV Exhibits Packet Loss
Troubleshoot Error Messages in the Syslog or Console
Troubleshoot Module Failure to Come Online
Interface Problems
Workstation Is
Unable to Log In to the Network During Startup or Unable to Obtain the DHCP Address
Troubleshoot NIC
Compatibility Issues
Interface Is in errdisable Status
Troubleshoot Interface Errors
Interface Is Stuck in the Receive Direction on Ports That
Connect to Hubs or Other Devices
MAC Address of Directly Connected Port is Not Learned by the Remote Device
Power Supply and Fan Problems
Power Supply on a 4500 Chassis Is in errdisable State in the Output of the show power Command
Power Supply Fail LED
Is On
Fan Assembly Failed in the show environment status Command
Diagnostic Commands
show version
show module
show diagnostics online module
show diagnostics power-on
show power
show environment status
show interface interface-id status
show errdisable recovery
show interface interface-id counters error
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Related Information
Introduction
This document discusses the troubleshoot of hardware and related common issues on Cisco Catalyst 4500/4000 switches with Supervisor Engine II+, III, IV, and V modules. This document does not cover Supervisor Engine I and II troubleshoot practices. For information on the
troubleshoot of Supervisor Engine I and II, refer to Hardware Troubleshooting for Catalyst 4000/4912G/2980G/2948G Series Switches.
The Supervisor Engine II+, III, IV, and V run Cisco IOS® Software only. This table describes the support of these Supervisor Engine modules in various chassis:
Note:
Supervisor Engine modules need to run Cisco IOS Software Release 12.1(12c)EW or later in order to run on the 45xx chassis. The Supervisor Engine IV first release is Cisco IOS Software Release 12.1(12c)EW.
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
The information in this document is based on these software and hardware versions:
z
Catalyst 4500/4000 with a Supervisor Engine III and IV
z
Cisco IOS Software Release 12.1(12c)EW
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Supervisor Engine or Module Problems
Supervisor Engine LED Is Red or Status Indicates Faulty
If your switch Supervisor Engine LED is red or the status shows faulty, there can be a hardware problem. This Common Reasons and Solutions section provides common reasons for this problem and solutions:
Common Reasons and Solutions
z
Console into the Supervisor Engine and issue the
show diagnostics power-on
command, if you can issue the command. If the action returns a failure, create a service request with Cisco Technical Support for further assistance.
z
If the switch does not boot and fails self diagnostics during the boot sequence, capture the output. Then, create a Cisco Technical Support service request for further assistance.
If you do not see any hardware failure in the boot sequence or in the output of the
show diagnostics power-on
command, create a Cisco
Technical Support service request for further assistance.
Switch Is in a Continuous Boot Loop, Freezes or Halts During Boot, Is in ROMmon Mode, or Does Not Have the System Image
If your switch Supervisor Engine is in a continuous boot loop, freezes or halts during boot, is in ROM Monitor (ROMmon) mode, or does not have the system image, the problem is mostly likely not a hardware problem. This Common Reasons and Solutions section provides
common reasons for this problem and solutions to recover the switch:
Common Reasons and Solutions
z
The Supervisor Engine is in a continuous loop if you have not set the boot variable correctly and you have set the configuration register to 0x2102. For instructions on how to recover the Supervisor Engine, refer to the
Recovering from a Continuous Reboot
section of the
document Recover a Cisco IOS Catalyst 4500/4000 Series Switch from a Corrupt or Missing Image or in Rommon Mode.
z
The Supervisor Engine goes into ROMmon mode or fails to boot when the system image is either corrupt or absent. For instructions on how to recover the Supervisor Engine, refer to the
Recovering from a Corrupt or Missing Image
section of the document Recover a Cisco
IOS Catalyst 4500/4000 Series Switch from a Corrupt or Missing Image or in Rommon Mode.
The Supervisor Engine III, IV, and V have 64 MB of onboard system Flash, which should easily hold multiple system images. Therefore, have a backup image. In addition to the bootflash:, the Supervisor Engine supports up to 128 MB of compact Flash in the slot0: device. The
Supervisor Engine also provides for transfer via TFTP of the image from ROMmon mode, which enables faster recovery of absent or corrupt images.
Note:
The Supervisor Engine II+ has 32 MB of onboard system Flash.
Caution:
If you run Cisco IOS Software Release 12.1(12c)EW, your switch can crash if you try to use the compact Flash. Format the compact Flash before use. The resolution of this issue is in Cisco IOS Software Release 12.1(13)EW and later.
Standby Supervisor Engine Module Is Not Online or Status Indicates Other
Another issue is the failure of the standby Supervisor Engine module to come online. The status of
other
or
faulty
in the output of the
show module
command or an amber Status LED indicates this problem. This Common Reasons and Solutions section provides common
reasons:
Common Reasons and Solutions
z
Console into the standby Supervisor Engine in order to check whether it is in ROMmon mode or in continuous reboot. If the standby Supervisor Engine is in either of these two states, refer to Recover a Cisco IOS Catalyst 4500/4000 Series Switch from a Corrupt or Missing
Image or in Rommon Mode.
4507#
show module
Mod Ports Card Type Model Serial No.
----+-----+--------------------------------------+-----------------+-----------
1 2 1000BaseX (GBIC) Supervisor(active) WS-X4515 JAB0627065V
2
Standby Supervisor
3 48 10/100/1000BaseTX (RJ45) WS-X4448-GB-RJ45 JAB053606AG
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Supervisor Engine Model Chassis with Support
Supervisor Engine II+ (WS-X4013+=) 4006, 4503, 4506, 4507R
Supervisor Engine III (WS-X4014=) 4006, 4503, 4506
Supervisor Engine IV (WS-X4515=) 4006, 4503, 4506, 4507R
Supervisor Engine V (WS-X4516=) 4006, 4503, 4506, 4507R, 4510R

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