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Cisco Bug: CSCvh82217 - sessmgr task restart during MME start Auth procedure.

Last Modified

Feb 05, 2019

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

21.6.0.68695 21.7.0

Description (partial)

Symptom:
sessmgr restart observed while trying to start Auth procedure.

Conditions:
Issue seen with below config.

lte-policy
network-global-mme-id-mgmt-db
      plmn mcc 250 mnc 20 mme-group-id-range first 33792 last 33792
#exit

mme-service mmesvc
  mme-id group-id 34048 mme-code 176
   plmn-id mcc 250 mnc 20
  
  associate network-global-mme-id-mgmt-db
#end


Below scenario leading to Assert-

1) UE sends IMSI Attach Req.
2) After MME sends Attach Accept, UE sends Attach Req again, this time with GUTI.
3)Assert is hit here.
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