Cisco Systems 4500 manual Troubleshooting Backplane Modules

Chapter 5 Troubleshooting

Troubleshooting Backplane Modules

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

Step 4 Determine whether the airflow is restricted or if the ambient temperature in the room is too warm.

Step 5 Determine whether the power supply is functioning properly. See the “Troubleshooting the Power Supply” section on page 5-6.

Step 6 Verify that the fan assembly is properly seated in the backplane by loosening the captive installation screws, removing the fan assembly, and reinstalling it.

Step 7 Restart the system.

Step 8 Verify that all fans are operating. You should hear the fans at system start.

Step 9 If the system is still detecting a fan assembly failure, contact the Cisco TAC for assistance.

Troubleshooting Backplane Modules

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:

	Catalyst 4500 Series Switches Installation Guide
78-14409-08		5-9