Symptom

Activating/deactivating process restart SMU on the peer downs local bundle interface due to BFD session down. Bundle interface BFD session goes down due to member interface sessions ADMIN DOWN. Physical interface stays UP. RP/0/RP1/CPU0:5516-B#show bfd session Interface Dest Addr Local det time(int*mult) State Echo Async H/W NPU ------------------- --------------- ---------------- ---------------- ---------- Hu0/0/0/0 10.20.130.200 0s 3600s ADMIN DOWN Yes 0/0/CPU0 Hu0/0/0/1 10.20.130.200 0s 3600s ADMIN DOWN Yes 0/0/CPU0 BE10 10.20.130.200 n/a n/a DOWN No n/a

Conditions

A. Peer quickly restarts control plane B. Bundle interface has micro-BFD configured.

Workaround

1. shutdown/no shutdown interface -OR- 2. process restart bfd_agent location 0/x/cpu0 -OR- 3. unconfigure/configure bfd fast-detect on local bundle interface

Further Problem Description