Enterasys Networks X-Pedition XSR CLI - Manual (Page 286)

BGP Configuration Commands
6-90 Configuring the Border Gateway Protocol
bgp dampening
This command enables BGP route dampening to minimize propagation of flapping routes
(repeatedly available/unavailable) across the network. Each time a route flaps, a penalty value of
1024 is assigned to that route.
Syntax
bgp dampening [half-life | reuse | suppress | suppress-max][route-map route-map-
number]
Syntax of the “no” Form
The no form of this command disables BGP dampening:
no bgp dampening
Mode
Router configuration: XSR(config-router)#
Defaults
• Half‐life ‐ 15 minutes
• Reuse ‐ 750
• Suppress ‐ 2000
• Suppress‐max ‐ 60 minutes
• Disabled.
Example
The following example enables route flap dampening:
XSR(config)#router bgp 100
XSR(config)#bgp dampening
half-life Interval after which the route’s penalty becomes half its value, ranging
from 1 to 45 minutes.
reuse How low a route’s penalty must become before the route becomes
eligible for use again after being suppressed, ranging from 1 to 20000.
suppress How high a route’s penalty must become before the route is suppressed,
ranging from 1 to 20000.
suppress-max Peak interval a route can be suppressed regardless of how unstable it is.
Range: 1 to 255 minutes.
route-map-number Route map number applied to dampened routes, ranging from 1 to 199.