This document describes the reason for the ims-authorization-revoked disconnect. The show session disconnect-reasons command shows the internal disconnect reason that is currently overserved in the system.
When the ims-authorization-revoked Disconnect Reason is Pegged?
The most common scenario is the PGW receives Re-Auth-Request (RAR) from PCRF to release the session. To understand the exact scenario the monitor subscriber (verbosity 3 and Multi-Call Trace options) and/or packet capture should be collected. Here is a snippet of monitor subscriber trace where the PCRF releases the session with ims-authorization-revoked disconnect reason by sending RAR with UNSPECIFIED_REASON at Session-Release-Cause.
“If the PCRF decides to terminate an IP CAN session due to an internal trigger or trigger from the SPR, the PCRF shall send a RAR command including the Session-Release-Cause AVP to the PCEF. The PCEF shall acknowledge the command by sending an RAA command to the PCRF.”
Monday April 12 2021 ***CONTROL*** 20:06:25:139 Eventid:10285 .... Disconnect Reason: ims-authorization-revoked Last Progress State: GTP-PDN-IPv4-Connected
Cisco Internal Information Logging monitor configured for the imsi with filters below showed the following sessmgr events logging monitor msid <imsi> logging display pdu-verbosity 5 loggin display event-verbosity full