Ip Bgp Dampening - Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual

BGP Commands

ip bgp dampening

Enables or disables BGP route dampening or the suppression of unstable routes. Route dampening helps to
control the advertisement of routes that are going up and then down at an abnormally high rate. Routes
that are changing states (available then unavailable) are said to be flapping.
ip bgp dampening [half-life half_life reuse reuse suppress suppress max-suppress-time
max_suppress_time]
no ip bgp dampening
Syntax Definitions
half_life
reuse
suppress
max_suppress_time
Defaults
parameter
half_life
reuse
suppress
max_suppress_time
This command is disabled by default.
Platforms Supported
OmniSwitch 6850, 6855, 6850E, 9000E
Usage Guidelines
•
Use the no form of this command to disable dampening.
•
BGP dampening is disabled by default. When enabled, route dampening suppresses routes that are
unstable, or "flapping," and disrupting the network.
•
BGP dampening of IPv6 route flaps is currently not supported.
•
This command enables dampening and can also be used to change the default times for the dampening
variables.
•
Use the dampening variables to set penalties, suppression limits, and reuse values for flapping routes.
OmniSwitch CLI Reference Guide
The half-life duration, in seconds. The valid range is 0–65535.
The number of route withdrawals set for the re-use value. The valid
range is 1–9999.
The dampening cutoff value. The valid range is 1–9999.
The maximum number of seconds a route can be suppressed. The valid
range is 0–65535.
value
300
200
300
1800
June 2012 page 25-27