BGP Commands
©2008 Allied Telesis Inc. All rights reserved.
31.16
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
Software Version 5.2.1
bgp dampening
This command sets bgp dampening parameters.
Route dampening minimizes the instability caused by route flapping. A penalty is added for
every flap in a flapping route. As soon as the total penalty reaches the
suppress
limit the
advertisement of the route is suppressed. This penalty is decayed according to the configured
half time
value. Once the penalty is lower than the
reuse
limit, the route advertisement is un-
suppressed.
The dampening information is purged from the router once the penalty becomes less than half
of the
reuse
limit.
The
no
form unsets the bgp dampening parameters.
Syntax
bgp dampening
no bgp dampening
bgp dampening
<
reachtime>
no bgp dampening
[
<reachtime>
]
bgp dampening
<reachtime> <reuse> <suppress> <maxsuppress>
<unreachtime>
no bgp dampening
[
<reachtime> <reuse> <suppress> <maxsuppress>
<unreachtime>
]
bgp dampening
<routemap>
no bgp dampening
[
<routemap>
]
Parameter
Description
<
reachtime>
<1-45>
Specifies the reachability half-life time in minutes. The time for the
penalty to decrease to one-half of its current value. The default is 15
minutes.
<reuse>
<1-20000>
Specifies the reuse limit value. When the penalty for a
suppressed route decays below the reuse value, the routes become
unsuppressed. The default reuse limit is 750
<suppress>
<1-20000>
Specifies the suppress limit value. When the penalty for a route exceeds
the suppress value, the route is suppressed. The default suppress limit is
2000.
<maxsuppress>
<1-255>
Specifies the max-suppress-time. Maximum time that a dampened route
is suppressed. The default max-suppress value is 4 times the half-life time
(60 minutes).
<unreachtime>
<1-45>
Specifies the un-reachability half-life time for penalty, in minutes.
<routemap>
route-map
<routemap_name>
Route-map to specify criteria for dampening.
<routemap_name>
Specify the name of the route-map.
Содержание AlliedWare Plus 5.2.1
Страница 8: ...65 Stacking Commands Introduction 65 2 Appendix l Command List ...
Страница 10: ......
Страница 218: ......
Страница 376: ......
Страница 726: ......
Страница 806: ......
Страница 1006: ......
Страница 1056: ......
Страница 1235: ...Stacking Reference This part includes the following chapters Chapter 64 Stacking Introduction Chapter 65 Stacking Commands ...
Страница 1236: ......