Extreme Networks ExtremeWare 7.7, Command Reference Manual

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1932 ExtremeWare 7.7 Command Reference Guide
BGP Commands—“i” Series Switches Only
configure bgp neighbor dampening
configure bgp neighbor [<ip address> | all] dampening {{<half-life>
{<reuse> <suppress> <max-suppress> }} | {route-map <route map>}}
Description
Configures route flap dampening over BGP peer sessions.
Syntax Description
Default
This feature is disabled by default.
Usage Guidelines
The half life is the period of time, in minutes, during which the accumulated penalty of a route is
reduced by half. The range is 1 to 45 minutes, and the default is 15 minutes.
The reuse limit is the penalty value below which a route will be used again. The range is 1-20,000, and
the default is 750.
The suppress limit is the penalty value above which a route will be suppressed. The range is 1-20,000,
and the default is 2,000.
The maximum hold down time is the maximum time a route can be suppressed, no matter how
unstable it has been, as long as it no longer flaps. The range is 1-255 minutes, and the default is 4 * the
half life.
Use the following command to disable route flap dampening for BGP neighbors:
configure bgp neighbor [<ip address> | all] no-dampening
Example
The following command configures route flap dampening to the BGP neighbor at 192.168.1.22:
configure bgp neighbor 192.168.1.22 dampening
History
This command was first available in ExtremeWare 7.0.0.
ip address Specifies an IP address.
all Specifies all neighbors.
half-life Specifies the dampening half life.
reuse Specifies the reuse limit.
suppress Specifies the suppress limit.
max-suppress Specifies the maximum hold down time.
route map Specifies a route map