[nsp] BGP Configuration

[Tantsura, Jeff]

Hi,

1. set higher local preference for 2.3.3.0 on your bgp session with
9.9.9.9
2. prepend 2.3.3.0 on your fiber link, this will give you symmetry

Configs:

1
neighbor 9.9.9.9 route-map HIGHER_LP in

route-map HIGHER_LP permit 10
 match ip address prefix-list MY_LIST
 set local-preference 150
route-map HIGHER_LP permit 20

ip prefix-list MY_LIST permit 2.3.3.0/24

2
neighbor 8.8.8.8 route-map PREPEND out

route-map PREPEND permit 10
 match ip address prefix-list MY_LIST
 set as-path prepend <your AS. 2/3 times will be enough>
route-map PREPEND permit 20

Hope this helps

Jeff

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Alexandra
Alvarado
Sent: Thursday, July 01, 2004 1:29 AM
To: cisco-nsp at puck.nether.net; Alexandra Alvarado
Subject: [nsp] BGP Configuration

Hello,

I have 2 links, 1 fiber link and other satellital link, the satellital
link is the backup and only works when the fiber link is down. With BGP
it works ok!. Now I have a new requirement, I need to pass 1 class C
network to the backup link. Example I need that the main link to the
1.2.3.0 network be the fiber link and the main link to the 2.3.3.0
network be the satellital link.

Thanks for your help.

Alexandra Alvarado

PD:  My BGP configuration.

router bgp 19169
 no bgp fast-external-fallover
 bgp log-neighbor-changes
 network 1.2.3.0
 network 2.3.3.0

 neighbor 9.9.9.9 remote-as 33333
 neighbor 9.9.9.9 description SATELITAL
 neighbor 9.9.9.9 update-source Hssi5/0/0  neighbor 9.9.9.9 version 4
neighbor 9.9.9.9 soft-reconfiguration inbound  neighbor 9.9.9.9
route-map SAT_IN in  neighbor 9.9.9.9 route-map SAT_OUT out

 neighbor 8.8.8.8 remote-as 22222
 neighbor 8.8.8.8 description FIBER
 neighbor 8.8.8.8 update-source Serial8/0/1  neighbor 8.8.8.8 version 4
neighbor 8.8.8.8 soft-reconfiguration inbound  neighbor 8.8.8.8
route-map FIBER_IN in  neighbor 8.8.8.8 route-map FIBER_OUT out

ip prefix-list DEFAULT seq 10 permit 0.0.0.0/0

ip prefix-list LOCAL seq 10 permit 1.2.3.0/24 ip prefix-list LOCAL seq
10 permit 2.3.3.0/24

route-map FIBER_OUT permit 10
 match ip address prefix-list LOCAL

route-map SAT_OUT permit 10
 match ip address prefix-list LOCAL
 set as-path prepend 11111 11111 11111 11111

route-map FIBER_IN permit 10
 match ip address prefix-list DEFAULT
 set local-preference 120

route-map SAT_IN permit 10
 match ip address prefix-list DEFAULT
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