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Cisco Bug: CSCum85086 - Outbound calls through RL failing, RG members reported as down

Last Modified

Nov 12, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)

Outbound Calls via H323/MGCP GW (non ICT Trunk case) failing with the following error RouteListExhausted & Reason=41.
In multi-node scenarios, race condition is causing RoutePlanManager to learn trunk's status as down, while trunk is not actually down.
This is because the SM could not reflect the registration status for the trunk PID on the node  that was up and running
This issue seems generic enough to happen with any other kind of trunks/GW inside the RouteList

The issue is triggered by a loss of connectivity of the MGCP gateway over the WAN. After this, the due to either the gateways sending RSIP (rm:graceful) or (rm:restart), they are down. But apart from this, the internal data in the SM() process is not updated of the changes.
Due to this, MGCP Endpoints in the primary route group are seens as device down when trying to route calls. Gateway is registered and inbound calls were working fine. 

This issue can also occur by a CCM restart or the CCM server node going down or WAN link failure between UCM nodes.

Related Community Discussions

<key>CSCum85086</key> - Outbound calls through RL failing, RG members reported as down
We are encountering this bug on version Rebuilding the Gateway in CUCM fixes it for us.  Does anyone know if this bug is fixed in version (SU5)?
Latest activity: Jul 10, 2015
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