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Cisco Bug: CSCvs01342 - [CUPS] Dedicated bearer on UP is deleted even when receiving DBRes with temp rejection from MME.

Last Modified

Jun 15, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

21.16.1 21.16.1.73374 21.17.1 21.18.0

Description (partial)

Symptom:
Dedicated bearer were deleted when MME sent DBResp with temp rejection.

Conditions:
1. Attach a call for volte on SPGW
2. create dedicated bearer (EBI:6)
3. SPGW receive DBReq with EBI:6 from PGW and relay it to MME.
4. SPGW receive DBRes with cause:Temporarily rejected due to handover procedure in progress from MME
5. SPGW deletes dedicated bearer on UP
 - show subscribers saegw-only all on CP
  Bearer infomaiton is not change
   OECDHN 00e52fe1 440511000000001   005 u 1007:cafe:1::1:1              ims              00h00m22s
   OECEHN 00e52fe1 440511000000001   006 u 1007:cafe:1::1:1              ims              00h00m22s

 - show subscribers user-plane-only full all on UP
  Before  receiving DBRes with temp rejection 
    Number of associated PDRs : 4
    Number of associated ADC PDRs : 0
    Number of associated FARs : 4
    Number of associated QERs : 0
    Number of associated BARs : 0
    Number of associated URRs : 4
 After receiving DBRes with temp rejection 
    Number of associated PDRs : 2
    Number of associated ADC PDRs : 0
    Number of associated FARs : 2
    Number of associated QERs : 0
    Number of associated BARs : 0
    Number of associated URRs : 2
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