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Cisco Bug: CSCuq24876 - Unable to login via TACACS+ server when MIO is under a lot of stress

Last Modified

Feb 27, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

14.0(1) 15.0(21)

Description (partial)

Symptom:
Unable to login via TACACS+ and assertion failure seen when access is gained via logging in with local fall back password.  Rare situation where MIO would need to be under a lot of stress.

Conditions:
MIO has to be overstressed in order to hit this problem.  It can be reproduced by removing Gi routes and sending heavy traffic to the box with demux on MIO.  A lot of traffic will be redirected to the MIO in this case when the there are no available Gi routes to the DPCs, causing a lot of stress on the MIO.  MIO switchover also seems to trigger this issue while the MIO is under heavy load.
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