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Active Supervisor/Switch crash / failover can occur suddenly. %PMAN-3-RPSWITCH: RP switch initiated. Critical process linux_iosd-image has failed (rc 0) %PMAN-3-PROCHOLDDOWN: The process linux_iosd-image has been helddown (rc 134) %PMAN-0-PROCFAILCRIT: A critical process linux_iosd_image has failed (rc 134) Before the crash, the following errors will start appearing in the logs: %IOSXE_INFRA-6-PROCPATH_CLIENT_HOG: IOS shim client 'iosd-spa' has taken 3514 msec (runtime: 0 msec) to process a 'ngmod_macsec_sa_sc_res' message These errors will continue appearing for 5 minutes before the actual crash event occurs.
Seen on Cat9000 switches with IOS 17.3.x and 17.6.x with MACSec running with Endpoints / Anyconnect NAM. Crashes are commonly seen after ISE migration, or new ISE implementation.
Issue is not seen on 17.9.x releases.
The crash itself is very generic: the switch will crash due to messages/process taking too long.
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