Alcatel-Lucent 060321-10, Rev. B, Cli Reference Manual

Page: 996 / 2354

ip bgp dampening BGP Commands
page 19-28 OmniSwitch CLI Reference Guide March 2011
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 The half-life duration, in seconds. The valid range is 0–65535.
reuse The number of route withdrawals set for the re-use value. The valid
range is 1–9999.
suppress The dampening cutoff value. The valid range is 1–9999.
max_suppress_time The maximum number of seconds a route can be suppressed. The valid
range is 0–65535.
Defaults
This command is disabled by default.
Platforms Supported
OmniSwitch 10K
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.
parameter value
half_life 300
reuse 200
suppress 300
max_suppress_time 1800