H3C S7500E Series Command Manual page 605

Command Manual – IPv6 Routing
H3C S7500E Series Ethernet Switches
View
IPv6 address family view
Parameters
half-life-reachable: Half-life for reachable routes, in the range 1 to 45 minutes. By
default, the value is 15 minutes.
half-life-unreachable: Half-life for unreachable routes, in the range 1 to 45 minutes. By
default, the value is 15 minutes.
reuse: Reuse threshold value for suppressed routes, in the range 1 to 20000. Penalty
value of a suppressed route decreasing under the value is reused. By default, its value
is 750.
suppress: Suppression threshold from 1 to 20000, which should be bigger than the
reuse value. Routes with a penalty value bigger than the threshold are suppressed. By
default, it is 2000.
ceiling: Ceiling penalty value from 1001 to 20000. The value must be bigger than the
suppress value. By default, the value is 16000.
route-policy-name: Routing policy name, a string of 1 to 19 characters.
half-life-reachable, half-life-unreachable, reuse, suppress and ceiling are mutually
dependent. Once any one is configured, all the others should also be specified
accordingly.
Description
Use the dampening command to enable IPv6 BGP route dampening or/and configure
dampening parameters.
Use the undo dampening command to disable route dampening.
By default, no route dampening is configured.
Related commands: reset bgp ipv6 dampening, reset bgp ipv6 flap-info, display
bgp ipv6 routing-table dampened, display bgp ipv6 routing-table dampening
parameter, display bgp ipv6 routing-table flap-info.
Examples
# Enable IPv6 BGP route dampening and configure route dampening parameters.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv6-family
[Sysname-bgp-af-ipv6] dampening 10 10 1000 2000 3000
Chapter 5 IPv6 BGP Configuration Commands
5-5