221NOTE:• The maximum keepalive interval must be one third of the holdtime and no less than one second. Theholdtime 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 tovalidate 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 tothe peer is negotiated using the configured hold time.Configuring the interval for sending the same updateFollow these steps to configure the interval for sending the same update to a peer or peer group:To do… Use the command… RemarksEnter system view system-view —Enter BGP view bgp as-number —Configure the interval for sending the sameupdate to a peer or peer grouppeer { group-name | ip-address }route-update-interval intervalOptionalThe intervals for sending thesame update to an iBGPpeer and an eBGP peerdefault to 15 seconds and30 seconds respectively.Configuring BGP soft-resetAfter 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 refreshwithout tearing down BGP connections.However, if a peer not supporting route-refresh exists in the network, you must configure the peerkeep-all-routes command to save all routes from the peer, which are used during applying the new routeselection policy.Configure automatic soft-resetAfter route refresh is enabled for peers and a policy is modified, the router advertises a route-refreshmessage to the peers, which then resend their routing information to the router. After receiving the routinginformation, 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… RemarksEnter system view system-view —Enter BGP view bgp as-number —
