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Cisco Bug: CSCus21932 - SRVCC Hanged EGTPC Resources on Sv interface when no CS to PS complete

Last Modified

Feb 05, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases


Description (partial)

The SRVCC failure scenario is the following :
1-	PS to CS Request sent to MSC
2-	PS to CS Response received from MSC

3-	Radio Failure happens after the HO Command (id-RelocationComplete message not received by the target RNC after id-RelocationDetect) In this case, we can easily check that EGTP resources are still allocated on MME side while the subscriber is not present anymore on the MME.
show egtpc sessions egtp-service service_name
shows existing sessions even though the subscriber is no longer seen on this MME.

MSC is not sending the PS to CS Complete message after the handover complete.
Subscriber has moved off the MME but the egtpc session on Sv interface remains.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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