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Cisco Bug: CSCus62458 - MME is not sending ISDA to HSS during UE's relocation to 3G

Last Modified

Feb 13, 2018

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(934) 17.2.0.58678

Description (partial)

Symptom:
MME is not sending ISDA to HSS during UE's relocation from 4G to 3G

Conditions:
1. User is attached in 4G.
2. While User is relocating to 3G using RAU/SRNS procedures, HSS is sending ISDR with flags value 28.
3. MME is sending LRC to eNB.
4. when eNB is not responding to LRC, even after RAU/SRNS procedure is completed or after timeout of 25s
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