Troubleshooting Backplane Modules - Cisco CAtalyst 4500 Series Installation Manual

Chapter 5 Troubleshooting
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9

Troubleshooting Backplane Modules

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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
Determine whether the airflow is restricted or if the ambient temperature in the
room is too warm.
Determine whether the power supply is functioning properly. See the
"Troubleshooting the Power Supply" section on page
Verify that the fan assembly is properly seated in the backplane by loosening the
captive installation screws, removing the fan assembly, and reinstalling it.
Restart the system.
Verify that all fans are operating. You should hear the fans at system start.
If the system is still detecting a fan assembly failure, contact the Cisco TAC for
assistance.
The Cisco Catalyst 4500 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 and 4510R chassis. Spare redundancy modules
(C4K-MUX=) and a clock module (C4K-CLOCK=) are available for
serviceability.
The following conditions indicate that you may need to replace the redundancy
modules and clock module:
Troubleshooting Backplane Modules
Catalyst 4500 Series Switches Installation Guide
5-6.
5-9