Cisco Bug: CSCuw21831 - MME Co location with SGSN in Pool Not Achieved
Feb 20, 2017
- Cisco ASR 5000 Series
Known Affected Releases
18.3.0 19.0.v0.60839 19.2.d0 20.0.0 20.0.v0
Symptom: MME sends Served GUMMEI list for both LTE and Non-LTE RAT in a single list. Some ENodeB fails to send the TAU to the correct MME (collocated with previous SGSN) when subscriber does an INTER-RAT from 2G/3G to 4G with both MME and SGSN on pool. Conditions: This symptom is observed on Cisco ASR5000 MME running on software version 18.3.0, when MME sends Served GUMMEI list for both LTE and Non-LTE RAT in a single list (MME and SGSN in pool are co-located) instead of separated lists.
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