R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide

229
Step Command Remarks
3. Configure BGP keepalive interval
and holdtime.
• Configure the global keepalive
interval and holdtime:
timer keepalive keepalive hold
holdtime
• Configure the keepalive interval
and holdtime for a peer or 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.
Configuring the interval for sending the same update
A BGP router sends an update message to its peers when a route is changed. If the route changes
frequently, the BGP router sends a large number of updates for the route, which can cause route flaps.
This task allows you to configure the interval for sending the same update to a peer or peer group,
avoiding frequent update sending and route flaps.
To configure the interval for sending the same update to a peer or peer group:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter BGP view or BGP-VPN
instance view.
• Enter BGP view:
bgp as-number
• Enter BGP-VPN instance view:
a. bgp as-number
b. ipv4-family vpn-instance
vpn-instance-name
Use either method.
3. Configure the interval for
sending the same update to a
peer or peer group.
peer { group-name | ip-address }
route-update-interval interval
Optional.
By default, the intervals for sending
the same update to an IBGP peer
and an EBGP peer are 15 seconds
and 30 seconds, respectively.
If the interval is set to 0, the same
update is sent to a BGP peer
immediately when a route is
changed.
Enabling the BGP ORF capability
The BGP Outbound Route Filtering (ORF) feature allows a BGP speaker to send its BGP peer a set of ORFs
through route-refresh messages. The peer then applies the ORFs—in addition to its local routing policies
(if any)—to filter updates to the BGP speaker, reducing the number of exchanged Update messages and
saving network resources.
After you enable the BGP ORF capability, the local BGP router negotiates the ORF capability with the
BGP peer through Open messages (determines whether to carry ORF information in messages, and if yes,