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Cisco Bug: CSCup31065 - CST: standby PRE reload by Active running config access failure

Last Modified

Jan 28, 2017

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases

12.2SC

Description (partial)

Symptom:
The below logs observed in active PRE during PRE SO.
020851: *Jun 11 13:25:00.608 BJ: %FILESYS-4-RCSF: Active running config access failure (0)
020857: *Jun 11 13:25:14.272 BJ: %RF-5-RF_RELOAD: Peer reload. Reason: Active running config access failure
020858: *Jun 11 13:25:14.272 BJ: %REDUNDANCY-3-STANDBY_LOST: Standby processor fault (PEER_NOT_PRESENT)
020859: *Jun 11 13:25:14.272 BJ: %REDUNDANCY-3-STANDBY_LOST: Standby processor fault (PEER_DOWN)
020860: *Jun 11 13:25:14.272 BJ: %REDUNDANCY-3-STANDBY_LOST: Standby processor fault (PEER_REDUNDANCY_STATE_CHANGE)
020861: *Jun 11 13:25:14.272 BJ: %C10KEHSA-1-STANDBY_RESET: Subsystem 'Config Sync' has reset the Standby PRE. Reason='Active running config access failure'
020862: *Jun 11 13:25:14.272 BJ: %REDUNDANCY-3-STANDBY_LOST: Standby processor fault (PEER_NOT_PRESENT)
020863: *Jun 11 13:25:14.272 BJ: %REDUNDANCY-3-STANDBY_LOST: Standby processor fault (PEER_DOWN)

Conditions:
1. Active PRE's CPU usage reaches 99%. A "show running-config" operation is in progress, it may takes several minutes to finish.
2. Standby PRE boots up when "show running-config" is in progress.  Active PRE can't access running-config to do bulk sync this moment, so it will reset standby PRE.
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