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Cisco Bug: CSCus96924 - IPSG session replacement logic needs protection

Last Modified

May 21, 2018

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

16.4.1.58833 16.5.0.60314 19.2.d0 20.0.0 20.0.v0

Description (partial)

Symptom:
IPSG is working on a session replacement for a particular EU srcIP. 
Another session replacement is triggered, IPSG never completes and acknowledges the former session.
Session replacement attempts of the two and ends up with two sessions for the same EU srcIP.

Conditions:
RADIUS Accounting  request is  triggering the 2nd session replacement request. 
It  arrives while IPSG is still working on the 1st session replacement signalled by preceding RADIUS Acct message.
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