Cisco Catalyst 4500 Series Message Guide

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Catalyst 4500 Series Switch Cisco IOS System Message Guide Release 12.2(31)SGA
OL-11541-01
Chapter 2 Messages and Recovery Procedures
REDUNDANCY Messages
Error Message C4K_REDUNDANCY-2-NON_SYMMETRICAL_REDUNDANT_SYSTEM: [char]
Explanation
The active and standby supervisor engine hardware is different. In this condition,
redundancy operations are not guaranteed.
Recommended Action Configure the hardware so that the active and standby supervisor engines are
identical.
Error Message C4K_REDUNDANCY-2-POSTFAIL:POST failure on [char] supervisor detected.
[char]
Explanation
The active supervisor engine failed POST. The current standby supervisor engine resets
the current active supervisor engine to standby and attempts to become the active supervisor engine.
If the standby supervisor engine failed POST, then it will suspend at bootup and stay there. During
this time if the active supervisor engine fails, then the standby supervisor engine will also reboot
because it is not a fully functional standby supervisor engine at this point.
Recommended Action Run offline diagnostics on the failed supervisor engine to isolate the problem.
Error Message C4K_REDUNDANCY-2-POSTFAIL_RESET:POST failure on ACTIVE supervisor
detected. [char]
Explanation
The active supervisor engine failed POST but detected the standby supervisor engine at
bootup. The active supervisor engine will reset itself so that the standby supervisor engine can take
over as the new active supervisor engine.
Recommended Action Run offline diagnostics on the failed supervisor engine to isolate the failure.
Immediate action is not needed for the switch to operate, but redundancy will not be available until
there is a second functional supervisor engine.
Error Message C4K_REDUNDANCY-2-CONFIG_VERIFICATION_ERROR: The Active supervisor has
previously detected a config sync verification error (error code [dec]).
Explanation
When this message appears the system cannot work in SSO mode so it sets the system
redundancy mode as RPR. For proper operation of SSO redundancy, the configuration running in
the active supervisor engine and standby supervisor engine must be the same. Here we have detected
at least one command unsupported or failing on the standby supervisor engine during the running
configuration bulk sync. In this condition SSO redundancy operations are not guaranteed.
Recommended Action Please check the full list of failures using the show issu config-sync failures
command. Remove from the configuration the commands that are causing the bulk sync
configuration failure.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E