Re: BGP Next Hop issue

From: EA Louie (elouie@xxxxxxxxx)
Date: Fri Dec 14 2001 - 05:15:14 GMT-3


   
sure there is. it's called a route-map. I just did this to replace a
static default route in ccboot2's bgp section.

R2 192.168.1.1 to R1 192.168.1.2 (iBGP neighbors)
R2 10.1.1.1 to R3 10.1.1.2 (eBGP neighbors, so I'm assuming)

on R2...
route-map nexthopR2 permit 10
 set ip next-hop 192.168.1.1
router bgp 1
 neighbor 192.168.1.2 remote-as 1
 neighbor 192.168.1.2 route-map nexthopR2 out
end

---- Original Message -----
From: "Ravi" <s_ravichandran@hotmail.com>
To: "Menga, Justin" <Justin.Menga@Compaq.com>; <ccielab@groupstudy.com>
Sent: Thursday, December 13, 2001 7:43 PM
Subject: Re: BGP Next Hop issue

> RIP is running between R2 and R3
> OSPF between R1 and R3 and rest of the network.
> Redistribution is not done at R2 so no IGP between R1 and R3
>
> Regards,
> Ravi
> ----- Original Message -----
> From: Menga, Justin <Justin.Menga@Compaq.com>
> To: Ravi <s_ravichandran@hotmail.com>; <ccielab@groupstudy.com>
> Sent: Thursday, December 13, 2001 10:31 PM
> Subject: RE: BGP Next Hop issue
>
>
> If you are using an IGP between R1, R2, and R3 then you can configure
> networks advertised from R3 as backdoor routes. This increases the
> administrative distance for the networks to 200 and allows the IGP
> routes to be used over the EBGP routes..
>
> E.g.
>
> 192.168.1.0/24 is behind R3...
>
> On R1:
>
> router bgp 3310
> network 192.168.1.0 backdoor
>
>
> Regards,
> Justin
>
> -----Original Message-----
> From: Ravi [mailto:s_ravichandran@hotmail.com]
> Sent: Friday, 14 December 2001 3:40 p.m.
> To: ccielab@groupstudy.com
> Subject: BGP Next Hop issue
>
>
> Hi,
>
> How to change the next hop in the following scenario,
>
>
> R1-----R2----------R3
>
> R1connected to R2, R2 is connected to R3, R3 has ip connectivity to R1
> not thru R2.
>
> R3 advertises some routes to R2 and R1 from another AS, with next hop
> self. R2 has no problem to go to next hop R1. R1 sees the next hop of
> R3, As R1 can not reach R3 via R2, it takes a longer route to reach R3.
>
> I would like R1 to see the next hop R2 to go to the networks advertised
> by R3. Is it possible to change the next hop??? I think confederation
> could be a possibility? is there any other way ????????
>
> Thanks...



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