Redundancy-2 - Cisco Catalyst 4500 Series System Message Manual

Chapter 2 Messages and Recovery Procedures
Error Message C4K_REDUNDANCY-2-IOS_VERSION_INCOMPATIBLE:[char]
Explanation
engine is running Cisco IOS Release 12.2 or later releases and the standby supervisor engine is
running Cisco IOS Release 12.1. The system will reset the standby supervisor engine.
Recommended Action
running the same release of Cisco IOS software.
Error Message C4K_REDUNDANCY-2-NON_SYMMETRICAL_REDUNDANT_SYSTEM: [char]
Explanation
redundancy operations are not guaranteed.
Recommended Action
identical.
Error Message C4K_REDUNDANCY-2-POSTFAIL:POST failure on [char] supervisor detected.
[char]
Explanation
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
Error Message C4K_REDUNDANCY-2-POSTFAIL_RESET:POST failure on ACTIVE supervisor
detected. [char]
Explanation
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
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-SEND_NEGO_FAILED: Redundancy ISSU client failed to
send negotiation message.
Explanation
device. If a problem occurs with the ISSU session negotiation, the standby device cannot be brought
up properly.
Recommended Action
active and standby supervisor engines have software supporting ISSU. Reset the standby supervisor
engine using the redundancy reload peer command. If problems persist, contact a Cisco technical
support representative.
OL-13091-01
The system detected an incompatible redundancy condition. The active supervisor
Configure the switch so that the active and standby supervisor engines are
The active and standby supervisor engine hardware is different. In this condition,
Configure the hardware so that the active and standby supervisor engines are
The active supervisor engine failed POST. The current standby supervisor engine resets
Run offline diagnostics on the failed supervisor engine to isolate the problem.
The active supervisor engine failed POST but detected the standby supervisor engine at
Run offline diagnostics on the failed supervisor engine to isolate the failure.
Error: [dec] ([char])
The redundancy ISSU client failed to send a session negotiation message to the peer
Using the show issu compatibility matrix command, verify that both the
Catalyst 4500 Series Switch Cisco IOS System Message Guide
REDUNDANCY Messages
2-89