Guest

Preview Tool

Cisco Bug: CSCvs56074 - Unexpected LTE Attach/TAU: Old UE Context still released with "NAS Unspecified"

Last Modified

Oct 02, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.12.15 21.17.6 21.18.0 21.6.b23

Description (partial)

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.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.