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Cisco Bug: CSCvt05076 - PGW handling of multiple RARs

Last Modified

May 17, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.19.0 21.19.n1 21.9.3.70453

Description (partial)

Symptom:
when PGW receive RAR with existing rules deletion as well as new rule installation after dedicated bearer establishment (same kind of TFT configuration as per customer), PGW trigger Update Bearer request to delete some filters and another update bearer request to replace the filters.
But at the customer environment as dedicated bearer request is pending and PGW received RAR from PCRF with multiple pending rule deletions and new rule installation for the same dedicated bearer, we are observing the different behaviour.

Conditions:
PGW receiving multiple RARs:

  1.  RAR to install rule1,2 with 4 tft
  2.  CBReq sent with PF 0,1,2,3
  3.  Before CBResp 2 RAR with removal of rule1,2 and install of rule3,4 respectively for same bearer.
  4.  After CBResp we generate a UBReq for deletion of PF 0,1,2,3 instead of DBReq
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