Cisco Bug: CSCtd42369 - Multicast not forwarding on SRP interface after FO and Routing change
Jan 07, 2017
- Cisco Carrier Routing System
Known Affected Releases
3.6.2.BASE 3.7.0.BASE 3.8.1.BASE
Symptom: Multicast traffic drop on SRP interface when there is a FO and a simultaneous routing change on the downstream router Conditions: On a broadcast type interfaces (SRP/Broadcast Ethernet) if the interface is in the forwarding and a assert condition is detected during NSF (Failover), The EG flag on the SRP interface is turned off. However post-NSF, if there was routing change on the downstream router, the EG flag is not turned back on resulting in permanent traffic loss.
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