H3C Technologies H3C S5560 Series Switches User Manual
Page 258
242
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.
ip vpn-instance
vpn-instance-name
N/A
3.
Configure the keepalive
interval and hold time.
•
Configure the global keepalive
interval and hold time:
timer keepalive keepalive hold
holdtime
•
Configure the keepalive
interval and hold time for a
peer or peer group:
peer { group-name |
ipv6-address [ prefix-length ] }
timer keepalive keepalive hold
holdtime
Use at least one method.
By default, the keepalive interval is
60 seconds, and hold time is 180
seconds.
The timer command takes effect for
new BGP sessions and does not
affect existing sessions.
If you modify the timers with the
peer timer command, BGP
immediately closes the existing
BGP session and creates a new
session to the peer by using the
new settings.
The holdtime must be at least three
times the keepalive interval.
Configuring the interval for sending updates for the same route
A BGP router sends an update message to its peers when a route is changed. If the route changes
frequently, the BGP router keeps sending updates for the same route, resulting route flapping. To prevent
this situation, perform this task to configure the interval for sending updates for the same route to a peer
or peer group.
To configure the interval for sending the same update to a peer or peer group (IPv4):
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.
ip vpn-instance
vpn-instance-name
N/A
3.
Configure the interval for
sending updates for the same
route to a peer or peer group.
peer { group-name | ip-address
[ mask-length ] }
route-update-interval interval
By default, the interval is 15
seconds for an IBGP peer and 30
seconds for an EBGP peer.
To configure the interval for sending the same update to a peer or peer group (IPv6):