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Cisco Bug: CSCut52403 - Assertion failure Function: egtpc_validate_setup_handle_cmd

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

18.0.0.59476

Description (partial)

Symptom:
sessmgr task failure seen when MME sends Create Indirect Fwd Tunnel Req even in case MBrsp failure is sent to the node during HO in connecting state. Applicable to SGW and SAEGW services

Conditions:
1.SGW first receives CSR for S1 GNGP handover from MME.
2. Then it receives MBR from SGSN , in this case SGW driver sends MBR failure as CSR interface type & the current peer does not match. however at this stage egtpc ingress tunnel is already moved to SGSN.
3. SGW receives create indirect fwding tunnel request from SGSN, and crash is seen as setup handle is issued with NULL s4 tunnel handle.
4. As MBR is rejected by SGW, at this stage SGW driver (clp & pdn points to ingress s11) and egtpc (points to s4) goes out of sync. Any further messaging may result in crash at driver
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