Cisco Bug: CSCvt44868 - [Non-IP Data Over SCEF] MME sending DIAMETER_ERROR_UNREACHABLE_USER, MT data not delivered
May 19, 2020
- Cisco ASR 5000 Series
- Cisco ASR 5500
Known Affected Releases
21.13.17 21.13.19 21.19.0 21.19.n1
Symptom: MME responds with DIAMETER_ERROR_UNREACHABLE_USER (4221) and the MT data is still not delivered to the device. Conditions: - UE in PSM - MT message is buffered on SCEF due to the device being in the PSM, - receiving MO traffic from the UE, MME sends the CMR-update with cmr-flag = 1 - then SCEF sends buffered MT-data to the device - However, the MME responds with DIAMETER_ERROR_UNREACHABLE_USER (4221) and the MT data is still not delivered to the device.
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