In NGN bearer network use BFD to cooperate IP-FRR feature. When configuring BFD session, process-pst must be configured for static and direct route. Direct and static route cannot use route policy. Change port state table according to BFD. When BFD check state is down, check PST state table. Only the port in PST state table is down, it will trigger IP-FRR and realize cooperation. How to check identifier of PST state table?
Enter into diag mode. The command can be referred to "efu ims-pst queue slot board". e.g. check PST state of g1/0/3:
[R1-diag-ne5000]efu ims-pst queue 1 1
Query the ims Pst table result:
Blade index : 1
The status of ports: 1:UP 0:DOWN
Port 0~7: 1-1-1-0-1-1-1-1
Port 8~15: 1-1-0-0-0-0-0-0
Port 16~23: 0-0-0-0-0-0-0-0
Port 24~31: 0-0-0-0-0-0-0-0
Port 32~39: 0-0-0-0-0-0-0-0
Port 40~47: 0-0-0-0-0-0-0-0
Port 48~55: 0-0-0-0-0-0-0-0
Port 56~63: 0-0-0-0-0-0-0-0
The board is 10 port GE. In PST state table only Port 0~Port 9 is meaningful. Port 3 displays 0 and it indicates PST state table of g1/0/3 port is down. If it is 1, it means it is up.