R3721-F3210-F3171-HP High-End Firewalls Network Management Configuration Guide-6PW101

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• If the holdtime settings on the local and peer routers are different, the smaller one is used.
• If the keepalive interval is 0 and the negotiated holdtime is not 0, the actual keepalive interval
equals one-third of the holdtime.
• If the keepalive interval is not 0, the actual keepalive interval is the smaller one between one third
of the holdtime and the keepalive interval.
To configure BGP keepalive interval and holdtime:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view.
bgp as-number N/A
3. Configure the global keepalive
interval and holdtime.
timer keepalive keepalive hold
holdtime
Optional.
By default, the keepalive
interval is 60 seconds, and
holdtime is 180 seconds.
4. Configure the keepalive interval
and holdtime for a peer/peer
group.
peer { group-name | ip-address }
timer keepalive keepalive hold
holdtime
NOTE:
• The maximum keepalive interval should be one third of the holdtime and no less than 1 second. The
holdtime is no less than 3 seconds unless it is set to 0.
• The intervals set with the peer timer command are preferred to those set with the timer command.
• If the router has established a nei
g
hbor relationship with a peer, you need to reset the BGP connection
to validate the new set timers.
• The timer command takes effect for only new connections.
• After peer timer command is executed, the peer connection is closed at once, and a new connection to
the peer is negotiated using the configured hold time.
Configuring the interval for sending the same update
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Configure the interval for
sending the same update to a
peer/peer group.
peer { group-name | ip-address }
route-update-interval interval
Optional.
The intervals for sending the
same update to an IBGP peer
and an EBGP peer default to
15 seconds and 30 seconds
respectively.
Configuring BGP soft-reset
After modifying the route selection policy, you have to reset BGP connections to make the new one take
effect.
The current BGP implementation supports the route-refresh feature that enables dynamic route refresh
without tearing down BGP connections.