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Cisco Bug: CSCuo97721 - HNBGW trigger PS RabRel during Muti-RAB?PS handover

Last Modified

Feb 07, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(16) 15.0(930) 17.0

Description (partial)

There is a situation during intra-hnbgw-hand-off (srns relocation) where we see that SGSN is using the same GTPU endpoint for the new session towards tgt-HNB, as present in the existing tunnel towards the src-HNB.
As a result, for the duration of hand-off procedure, HNBGW has 2 tunnels which have 2 different local GTPU endpoints but the same peer endpoint.
This results into the first tunnel getting deleted as a result of duplicate peer detection by gtpumgr.

This issue will be observed during the SRNS based Relocation where the SGSN is filling the same GTPU endpoint in the Relocation Request as present in the Src-HNB side GTPU tunnel.
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