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Cisco Bug: CSCut18087 - UE Initiated PDN Disconnections Counter Improperly Populated

Last Modified

May 21, 2018

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

Description (partial)

UE Initiated PDN Disconnections- Attempted and Success counter is not getting populated for the scenario, given below:
1. Initiate an EPS attach.
2. Initiate additional PDN connection procedure.
3. Initiate a PDN Disconnect procedure for the second PDN.
4. Do not send the 'DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT' message upon receiving the 'DEACTIVATE_EPS_BEARER_CONTEXT_REQUEST' message.

If the message 'DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT' is not sent upon receiving the 'DEACTIVATE_EPS_BEARER_CONTEXT_REQUEST' message, then the following issues are observed:

a)UE Initiated PDN Disconnections- Attempted and Success counters are not pegged even after retries. Attempted and Success counters should peg to 1 as PDN Disconnect procedure is considered successful even if the accept message from UE is not received.

Note: Counters get populated properly if MME receives the 'DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT' message. 

b)The re-transmission happens only 3 times instead of 4, which is supposed to be the default.
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