RE: BGP route flap dampening : use of the route-map option

From: Halaska, David (David.Halaska@xxxxxxxxxxxxx)
Date: Mon Jan 29 2001 - 17:11:48 GMT-3


   
By using the route map here, you can select which networks you want to do
selective dampening to. Or you can give different networks different
dampening policies.

check out this example from Halabi's book
the 172.16.220.0 network is coming in from a peer

router bgp 1
bgp dampening route-map SELECTIVE_DAMPENING
net 192.168.11.0
nei 172.16.20.2 remote-as 3
nei 192.168.6.1 remote-as 1
no auto

access-list 1 permit 172.16.220.0 0.0.0.255

route-map SELECTIVE_DAMPENING permit 10
  match ip add 1
  set dampening 20 950 2500 80

route-map SELECTIVE_DAMPENING permit 20

you can see what state the route is in by doing a:

sh ip bgp 172.16.220.0

Hope this helps,
David Halaska

-----Original Message-----
From: Patrick Bikar [mailto:pbikar@cisco.com]
Sent: Monday, January 29, 2001 2:33 PM
To: ccielab@groupstudy.com
Subject: BGP route flap dampening : use of the route-map option

Hi all,

What is the use of the route-map in the following command :

bgp dampening [half-life reuse suppress max-suppress-time] [route-map map]
 route-map map
                    (Optional) Name of route map that controls where BGP
route dampening is enabled.

I can't grasp to what the route-map applies to, and can't find examples
where it is used

Thanks !
Patrick.

Patrick.
CCNP, Belgium.
Lab:15/03/2001



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