Cisco Bug: CSCvs56074 - Unexpected LTE Attach/TAU: Old UE Context still released with "NAS Unspecified"
Oct 02, 2020
- Cisco ASR 5000 Series
- Cisco ASR 5500
Known Affected Releases
21.12.15 21.17.6 21.18.0 21.6.b23
Symptom: MME sends NAS cause "Unspecified" for Attach Request received over Initial-UE message if the UE is in the connected state. Conditions: Issue would be observed when no key is received for NAS KSI.
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