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Catalyst 4500 Series Switch Cisco IOS System Message Guide
OL-13091-01
Chapter 2 Messages and Recovery Procedures
CHASSIS Messages
Error Message C4K_CHASSIS-2-SLOTOVERHEATINGSHUTDOWN: Resetting linecard in slot
[dec] due to critical temperature
Explanation
Critical temperature for a module has been exceeded. The module has been reset to
reduce heat generation.
Recommended Action Remove and reinsert the module after some cooling period. If the problem
persists, the module has failed and needs to be replaced.
Error Message C4K_CHASSIS-2-MUXBUFFERSEEPROMINVALID: Invalid data in mux buffer
[dec]'s serial eeprom
Explanation
The mux buffer's serial EEPROM could not be read or has not been programmed. This
may impact traffic.
Recommended Action Please contact Cisco TAC to confirm that it is okay to continue using this mux
buffer.
Error Message C4K_CHASSIS-2-MUXBUFFERTYPENOTSUPPORTED: Mux Buffer in slot [dec] of
unsupported type [dec] .
Explanation
The Mux Buffer in this slot is not supported by this software. This may impact traffic.
Recommended Action Please contact Cisco TAC to confirm that it is okay to continue using this mux
buffer.
Error Message C4K_CHASSIS-2-INLINEPOWEROFF:Inline power to the switch has been
turned off
Explanation
Software detected that the pass-through current is disabled. This condition will cause
all phones drawing PoE from the switch to be powered off.
Recommended Action If you want PoE, verify that the in-line power switch on the power supply is
turned on.
Error Message C4K_CHASSIS-2-INSUFFICIENTFANSDETECTED:Too few working fans in fan
tray, the chassis will overheat. If not resolved, in 4 minutes all line cards will
be placed into Reset-Mode
Explanation
Two or more fans in the system fan tray or power supplies are malfunctioning, or the fan
tray has been removed. Although this is a minor alarm, system components could overheat and shut
down.
Recommended Action Replace the system fan tray or broken fans.
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