RE: BGP conditional route announcement

From: Faryar Zabihi \(fzabihi\) (fzabihi@cisco.com)
Date: Thu Mar 29 2007 - 19:48:02 ART


How are you advertising the 192.160.10.0 network?

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sergey Golovanov
Sent: Thursday, March 29, 2007 3:55 PM
To: BALAKRISHNAN Balaji;
Subject: Re: BGP conditional route announcement

router bgp 1
 network 172.20.122.0 mask 255.255.255.252 network 172.20.123.0 mask
255.255.255.252 neighbor x.x.x.x advertise-map ADV exist-map EXS !
route-map ADV permit 10
 match ip address 100
!
route-map EXS permit 10
 match ip address 101
!
access-list 100 permit ip host 192.168.10.0 host 255.255.255.0
access-list 101 permit ip 172.20.122.0 0.0.1.0 host 255.255.255.252

--------------------------------------------------------------------
Sergey Golovanov, CCIEx5 (R&S/Security/Voice/Service Provider/Storage)
"Please, don't ask me for my ccie #, there are reasons why I can't
release it"
ieMentor Instructor and Content Developer sergey.golovanov@iementor.com
http://www.iementor.com

> -------Original Message-------
> From: BALAKRISHNAN Balaji <Balaji.BALAKRISHNAN@swift.com>
> Subject: BGP conditional route announcement
> Sent: Mar 29 '07 15:08
>
> All,
>
> I have the following requirement need to be implemented in the bgp.
>
> Announce the network 192.168.10.0/24 only if the following routes are

> preset in the routing table.
>
> - 172.20.122.0/30 and 172.20.123.0/30. Both are connected routes,
i.e
> subnet configured on the interfaces. The bgp announcement should be
> withdrawn if any one of the route is not availabe. i.e if any one of

> the interface goes down.
>
>
> - Bala.
>
>
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