H3C Technologies H3C S10500 Series Switches - Manual (Page 236)

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NOTE:
•
The maximum keepalive interval must be one third of the holdtime and no less than one second. The
holdtime is no less than three 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 neighbor relationship with a peer, you must 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
Follow these steps to configure the interval for sending the same update to a peer or 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 or 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, 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.
However, if a peer not supporting route-refresh exists in the network, you must configure the peer
keep-all-routes command to save all routes from the peer, which are used during applying the new route
selection policy.
Configure automatic soft-reset
After route refresh is enabled for peers and a policy is modified, the router advertises a route-refresh
message to the peers, which then resend their routing information to the router. After receiving the routing
information, the router performs dynamic route update by using the new policy.
Follow these steps to enable BGP route refresh for a peer or peer group:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —