On one of our switch stacks we received the following log messages:
Aug 20 09:47:05: %XDR-6-XDRIPCNOTIFY: Fatal IPC error occurred for peer in slot
4. Message not sent due to timeout. Disabling linecard
-Traceback= AFFD58 21BCA4 BBCE14 BC1148 BC1874 BD3FC0 909AAC 90000C
Aug 20 10:00:05: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mech
anism: type 1, class 21, max_msg 8, total throttled 0
-Traceback= AFFD58 577E98 24F3EC 24F530 24FFA8 2501A0 909AAC 90000C
Aug 20 10:03:05: %PLATFORM_RPC-3-MSG_THROTTLED: RPC Msg Dropped by throttle mech
anism: type 3, class 21, max_msg 8, total throttled 1
-Traceback= AFFD58 577E98 24F3EC 24F530 24FF8C 2501A0 909AAC 90000C
We disconnected and reconnected the power cord on the member that was disabled to get it to restart. It re-joined the stack correctly and is functioning normally again. I could not find anything in the bug toolkit or release notes regarding fatal IPC problems on 3750 switches.
Has anyone seen these messages before on 3750s? Are there any thoughts as to whether this error condition was a fluke, whether it indicates hardware possibly going bad, whether it could occur as a result of some type of "bad" network traffic, etc?