Symptom

On Cisco GSR 12000 routers running IOSXR R4.1.0 software, user may notice labels missing in label database on line cards and some of the prefixes may be unresolved in vrfs. This condition will result in traffic drop for impacted prefix/label.

Conditions

Issue happens under following conditions: - Cisco GSR 12000 series routers running IOS-XR R4.1.0 image - label unicast config is present under bgp (3107, CSC option) AND - user makes a config change that results in removal of the last IPv4/IPv6 address on the linecard under the vrf.

Workaround

None.

Recovery

When the issue is hit, the user can recover by restarting rsi_agent.

Workaround

Further Problem Description