2-108
Catalyst 4500 Series Switch Cisco IOS System Message Guide
OL-13091-01
Chapter 2      Messages and Recovery Procedures
SUPERVISOR Messages
Error Message C4K_SUPERVISOR-3-SEEPROMREADFAILED:Failed to read supervisor's serial 
eeprom, try reinserting supervisor
Explanation
A reading of the supervisor engine's serial EEPROM failed. The read might fail if the 
module is not seated correctly in the slot.
Recommended Action Remove and reinsert the module. If that does not work, power cycle the switch. 
If the read still fails, contact your technical support representative. You may need to return some 
switch components for repair or replacement.
SUPERVISOR-4
Error Message C4K_SUPERVISOR-4-INLINEVOLTAGEOUTOFRANGE:Output voltage of the 
on-board inline power convertor on this  board is  [char] and is outside the 
expected  range of  [char]
Explanation
This message should only occur in systems using a Supervisor Engine II-Plus TS. The 
output voltage of the on-board inline power converter is outside its expected valid range. This 
condition can occur because of failed PoE components, one or more powered devices drawing more 
power than expected, or because of problems with the 12 V output of the system power supply. 
Recommended Action Use the show power detail and show power inline module 1 commands to 
verify that the devices drawing PoE are using the expected amount of power, and disconnect them 
if they are drawing more than desired. If the power supply LEDs are not green, verify at the source 
that the system power input is correct. If the problem persists, contact your technical support 
representative. You will probably need to replace the supervisor engine. 
Error Message C4K_SUPERVISOR-4-OTHERSUPERVISORACTIVEDEBOUNCE:Other supervisor is 
still holding hardware lock
Explanation
This condition is detected when the redundancy register incorrectly indicates that the 
other supervisor engine is holding a lock. This error is probably caused by hardware signal latency. 
Unless there is a real hardware failure, the switch automatically recovers from this state. If there is 
a persistent hardware failure, this message appears four times. 
Recommended Action This is an informational message only. No action is required.
Error Message C4K_SUPERVISOR-4-SUPMGMTMACFATALRXERR:Supervisor MAC device type 
[hex] reset due to a fatal Rx error
Explanation An error occurred with the out-of-band management port on the supervisor engine.
Recommended Action This is an informational message only. No action is required.