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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)

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.

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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