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Cisco Bug: CSCuj38311 - HeNBGW: Data is not working during s1-indirect-handover

Last Modified

Feb 04, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(1) 15.0(14)

Description (partial)

Root Cause : HeNBGW fails to fill proper Transport layer address in the HO Preparation successful outcome when forwarding the msg from MME to Logical ENB and HeNBGW deletes the already established bearer context.

Scenario :  Attach --> IDFT Handover (idft delay 10 sec) --> Handover --> Detach 

During this 10 sec interval where the UE is in IDFT phase, data traffic will be unsuccessful. 

The reason why data is not being transferred via indirect tunnel is  that fact that during the IDFT phase  EBI details in the  subscriber  context w.r.t  source eNB  is getting deleted as result of invalid check on DL/UL Optional IDFT Transport Layer Addresses. Also Endmarker will fail to reach source HeNB due to bearer context deletion.
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