System Messages And Fan Problems; Useful Cli Commands; Troubleshooting Backplane Modules - Cisco Line Card 4500 E-Series Installation Manual

Chapter 5 Troubleshooting
Step 8 If the system is still detecting a fan assembly failure, check for details using the CLI and contact the
Cisco TAC for assistance.

System Messages and Fan Problems

Look for system messages reporting a temperature problem or problem with the fans. Individual
messages may suggest different solutions. Connect a terminal to the console port, and look for any of
the following system messages:
If you see any of these messages or other messages related to fans, go to the following location and enter
the message text to find recommendations for your situation.
http://www.cisco.com/cgi-bin/Support/Errordecoder/index.cgi

Useful CLI Commands

The show environment status fantray command can give additional information useful in diagnosing
fan tray problems.

Troubleshooting Backplane Modules

The Cisco Catalyst 4500 E-series redundancy scheme uses removable redundancy modules (also called
mux-buffers), on the passive backplane to switch traffic to the active supervisor engine. There is one
redundancy module per switching module. Redundancy modules and a redundant clock ship standard
with every Cisco Catalyst 4507R-E and 4510R-E chassis. Spare redundancy modules (WS-X4590-E=)
and a clock module (WS-X4K-CLOCK-E=) are available for serviceability.
The following conditions indicate that you may need to replace the redundancy modules and clock
module:
•
OL-13972-02
C4K_CHASSIS-2-INSUFFICIENTFANSDETECTED
C4K_CHASSIS-2-INSUFFICIENTFANSSHUTDOWN
C4K_IOSMODPORTMAN-4-CRITICALTEMP
C4K_IOSMODPORTMAN-4-FANTRAYBAD
C4K_IOSMODPORTMAN-4-FANTRAYPARTIALFAILURE
C4K_IOSMODPORTMAN-4-FANTRAYREMOVED
C4K_SUPERVISOR-3-FANTRAYREADFAILED
C4K_SUPERVISOR-3-FANTRAYSEEPROMREADFAILED
C4K_SUPERVISOR-3-FANTRAYSEEPROMINVALID
C4K_IOSMODPORTMAN-4-TEMPHIGH
C4K_IOSMODPORTMAN-4-TEMPUNDERCRITICAL
C4K_CHASSIS-2-OVERHEATINGSHUTDOWN
The switch powers down and stays down for a few minutes to a few days for no clear reason.
Troubleshooting Backplane Modules
Catalyst 4500 E-Series Switches Installation Guide
5-7