To clear global, session, or interface counters, use the following command:
clear counters bfd {session | interface | missed-hellos}To clear missed hellos counters for a session using neighbor IP address:
clear counters bfd missed-hellos neighbor ipaddress {vr [vrname | all]}
To clear missed hellos counters for a particular range of session ID:
clear counters bfd missed-hellos {session-id first {- last}