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Cisco Bug: CSCvu63256 - Duplication of Session on UP and Zombie Sub

Last Modified

Sep 16, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.17.8 21.18.0 21.19.4 21.19.n3 21.20.1

Description (partial)

a. Upon SF card reset from vCD, sub disappears on the CP, but active on the UP. When UP sent SX_SESSION_REPORT_REQUEST to CP with USAGE REPORT, CP returned PFCP_CAUSE_CONTEXT_NOT_FOUND in the SX_SESSION_REPORT_RESPONSE message and call was disconnected with Disconnect Reason: sx-cntxt-not-found.
b. When sub reconnected, customer noticed sub had double session on the UP.
Both sessions has same IP address, different sessmgr instance, different callid.
One of the sessions was staled.

Testing vHGW CUPS solution with VMWare deployment.
vPC-DI/CP (SF and CF) not in ICSR mode
vPC-SI/UP with RCM deployment (N:M), 2:1 on the day of testing.
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