3Com S7906E - Switch, Configuration Manual

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To do… Use the command… Remarks
Enter system view
system-view
—
Enter BGP view bgp as-number
—
Configure the global keepalive
interval and holdtime timer keepalive keepalive hold
holdtime
Configure the keepalive interval and
holdtime for a peer/peer group
peer { group-name |
ip-address } timer keepalive
keepalive hold holdtime
Optional
By default, the keepalive
interval is 60 seconds,
and holdtime is 180
seconds.
z
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.
z
The intervals set with the peer timer command are preferred to those set with the timer command.
z
If the router has established a neighbor relationship with a peer, you need to reset the BGP
connection to validate the new set timers.
Configuring the Interval for Sending the Same Update
Follow these steps to configure the interval for sending the same update to a peer/peer group:
To do… Use the command… Remarks
Enter system view system-view
—
Enter BGP view bgp as-number
—
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 a route selection policy, you have to reset BGP connections to make the new one take
effect, causing short time disconnection.
The current BGP implementation supports the route-refresh capability, with which, a router can
dynamically refresh its BGP routing table when the route selection policy is modified, without tearing
down BGP connections. If a BGP peer does not support route-refresh, you need to save updates from
the peer on the local router. After that, when a route selection policy is modified, the router can refresh
its BGP routing table by using such updates without tearing down BGP connections.