Huawei Quidway S6500 Series Operation Manual page 245

Operation Manual - Routing Protocol
Quidway S6500 Series Ethernet Switches
Table 6-28 Configuring BGP route dampening
Configure BGP route dampening
Clear route attenuation information and
eliminating the suppression of the route
Cancel BGP route dampening
By default, route dampening is disabled. If no parameter is specified, the default values
are adopted:
half-life-reachable: Specify the semi-dampening when the route is reachable. The
range is 1 to 45 minutes. By default, the value is 15 minutes.
half-life-unreachable: Specify the semi-dampening when the route is unreachable. The
range is 1 to 45 minutes. By default, the value is 15 minutes.
reuse: The penalty value of a route when it start to be reused. The range is 1 to 20000.
By default, the value is 750.
suppress: The penalty threshold of a route when it start to be suppressed. The range is
1 to 20000. By default, the value is 2000.
ceiling: The upper threshold of the penalty. The range is 1001 to 20000. By default, the
value is 16000.
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.
6.2.10 Configuring BGP Preference
Three types of routes may be involved in BGP: routes learned from external peers,
routes learned from internal peers and local-origined routes. You can set preference
values for the three types of route.
You can set different BGP preference values for different sub-local families. Currently
the system supports unicast and multicast address families.
Please perform the following configurations in BGP view.
Operation
Huawei Technologies Proprietary
6-18
Chapter 6 BGP Configuration
Command
dampening [
half-life-unreachable
ceiling ] [
route-policy-name ]
reset bgp
[ network-address [ mask ] ]
undo dampening
half-life-reachable
reuse suppress
route-policy
dampening