Configuring Timers for BGP4+ Peers
Configuring timers properly improves network performance. Changing the timeout periods of timers, however, will interrupt peer relationships.
Context
Changing the timeout period of a timer using the peer timer command will interrupt peer relationships between routers. Therefore, exercise caution when changing the timeout period of a timer.
Perform the following steps on a BGP4+ device:
Procedure
- Run system-view
The system view is displayed.
- Run bgp as-number
The BGP view is displayed.
- Run peer { ipv6-address | group-name } timer keepalive keepalive-time hold hold-time [ min-holdtime min-hold-value ]
The timeout periods of the holdtime timer and Keepalive timer are set on a peer or peer group.
The value of hold-time must be at least three times that of keepalive-time.
Setting the Keepalive time to 20s is recommended. If the Keepalive time is smaller than 20s, sessions between peers may be closed.
When setting the values of keepalive-time and hold-time, note the following points:
The values of keepalive-time and hold-time cannot both be set to 0. Otherwise, the BGP timers become invalid, and BGP4+ cannot detect link faults based on the timers.
The value of hold-time such as timer keepalive 1 hold 65535 is much greater than that of keepalive-time. If the value of hold-time is too large, BGP4+ cannot detect link faults rapidly.
- Run commit
The configuration is committed.