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Cisco Bug: CSCup38815 - No EGTP_RELEASE_ACCESS_BEARERS_REQUEST after CONTEXT RELEASE REQUEST

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

17.0(1)

Description (partial)

Symptom:
No EGTP_RELEASE_ACCESS_BEARERS_REQUEST is sent to SGW from MME after CONTEXT RELEASE REQUEST received at MME.

Conditions:
When the MME is Waiting for Context Ack, if Src ENB send  CONTEXT RELEASE REQUEST, then MME should send EGTP_RELEASE_ACCESS_BEARERS_REQUEST to SGW and UE CONTEXT RELEASE to source ENB. But when executed the test in build 55365 (17.0), observed that MME didn't send the above message after receiving  CONTEXT RELEASE REQUEST.

=====SCENARIO=====

1.Make a 4G Combined  Attach

2.Start 4G to 3G Gn GP rau

3.While Waiting for Context Ack Src ENB send UE context Release

4.Then UE sends Exteneded Service Request for MO Voice Call

5.Then MME should not Crash and MME should move UE to Idle on UE context Release and Progress MO Call
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