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Cisco Bug: CSCun78420 - [ASR5000-MME]Assert ::Function: mme_allocate_ue_mtmsi()

Last Modified

Dec 24, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(17)

Description (partial)

Symptom:
When MME chassis is under stress and maximum number of sessions per session manager is reached in a session manager, new session will results the crash of this session manager.  log data has message "World must be crazy, All MME MTMSI local ids are taken".

Conditions:
For this issue to occur: 

1. A session manager must be handling active and inactive sessions more than 65536, so GUTI db records are at its maximum 
2. New session request comes, which shall not be an re-activatingof existing inactive session. 
3. Purging timer has not been triggered. Default Purging timer is set to 7 days. A session manager must reach maximum session capacity within 7 days. 
4. The chassis must be ASR5K with PS3  or ASR5500 with DPC
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