Re: BGP route injection

From: Jacek <q.192.168.1.0_at_gmail.com>
Date: Tue, 19 Apr 2011 23:41:33 -0400

I found the answer:

The solution is to set attributes on the inject-map itself, where the route
to be injected is defined, All configs on R4:

route-map INJECT permit 10
 set ip address prefix-list NEW-ROUTE
 set local-preference 1000
 set community no-export

route-map EXIST permit 10
 match ip address prefix-list ROUTE
 match ip route-source prefix-list ROUTE-SOURCE

ip prefix-list NEW-ROUTE seq 5 permit 1.1.3.0/24
ip prefix-list ROUTE seq 5 permit 1.1.0.0/22
ip prefix-list ROUTE-SOURCE seq 5 permit 10.1.34.3/32

router bgp 400
  bgp inject-map INJECT exist-map EXIST

This info is deeply hidden on DocCD, IOS 12.2T, Feature guides, BGP
conditional route-injection:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t4/feature/guide/ftbgpri.html

On Tue, Apr 19, 2011 at 5:09 PM, Jacek <q.192.168.1.0_at_gmail.com> wrote:

> Hello Experts,
>
> I have a question regarding conditional route injection in BGP. Is it
> possible to set attributes on an injected route ? Here is scenario:
>
> R1(AS100)---R2(AS200)---R3(AS300)---R4(AS400)
>
> R1 advertises four routes: 1.1.0.0/24, 1.1.1.0/24, 1.1.2.0/24 and
> 1.1.3.0/24
> R3 aggregates those routes as 1.1.0.0/22
> R4 injects specific route with command:
> # bgp inject-map INJECT exist-map EXIST
>
> As a result R4 sees aggregated route and more specific route:
> Network Next Hop Metric LocPrf Weight Path
> *> 1.1.0.0/22 10.1.34.3 0 300 200 100 i
> *> 1.1.3.0/24 10.1.34.3 0 ?
>
> How can I set attributes on R4 on specific /24 route, like local
> preference, and how ?

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Received on Tue Apr 19 2011 - 23:41:33 ART

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