Operation Manual - Routing Protocol
Quidway S3500 Series Ethernet Switches
Chapter 5 BGP Configuration
Huawei Technologies Proprietary
5-16
Table 5-27
Configuring BGP route dampening
Operation
Command
Configure BGP route dampening
dampening
[
half-life-reachable
half-life-unreachable reuse suppress ceiling
]
[
route-policy route-policy-name
]
Clear route attenuation
information and eliminating the
suppression of the route
reset bgp dampening
[
network-address
[
mask
] ]
Cancel BGP route dampening
undo dampening
By default, route dampening is disabled.
It must be noted that the parameters in the command are dependent on one another. If
one parameter is configured, other parameters must be specified.
5.2.10 Configuring BGP Timer
When receiving an OPEN message to set up a BGP connection, a BGP speaker needs
to calculate a hold timer. The smaller between its own Hold time and the one received in
the message will be selected as the negotiated Hold Timer. Then, BGP will send a
KeepAlive message and set a KeepAlive timer. If the negotiation result is 0, no
keepalive Message will be transmitted and whether the hold-time has timed out will not
be cared.
Perform the following configurations in BGP view.
Table 5-28
Configuring BGP Timer
Operation
Command
Configure BGP Timer
peer
{
group-name | peer-address
}
timer
keep-alive
keepalive-interval
hold holdtime-interval
Restore the default
value of the timer
undo peer
{
group-name | peer-address
}
timer
By default, the interval of sending keepalive packet is 60 seconds. The interval of
sending holdtime packet is 180 seconds.
5.2.11 Configuring the local preference
Different local preferences can be configured to affect the BGP routing. When a router
running BGP gets routes with the same destination address but different next hops
through different internal peers, it will select the route of the highest local preference.
Perform the following configurations in BGP view.
