From: Richard Boover (rboover@cisco.com)
Date: Mon Jul 28 2003 - 13:12:19 GMT-3
In R2, you need to change the following:
1) "neighbor 1.1.1.1 remote-as 1" to " neighbor 1.1.1.2 remote-as 1"
Rick
At 11:23 AM 7/28/2003 -0400, wwwjjang@chol.com wrote:
>This is a diagram
>
> L0(2.2.2.2/24)-R2-(e0 1.1.1.1/24)--(e0 1.1.1.2)-R1
>
>Assumtion>
>-R1 is in AS 1 and R2 is in AS2
>-There is no routing protocol in R1 & R2
>-There is no static routing in R1 such as "ip route 2.2.2.2/24 1.1.1.1"
>
>Question>
>
>-When you config a EBGP-peers between R1 & R2,
> You have to do configure R2 to use L0-int as the update-source for BGP
> against R1 !!
>
>---------------
>My answer
>----------------
>R1>
>
>router bgp 1
> bgp log-neighbor-changes
> neighbor 2.2.2.2 remote-as 2
> neighbor 2.2.2.2 ebgp-multihop 255
>
>R2>
>
>router bgp 2
> bgp log-neighbor-changes
> neighbor 1.1.1.1 remote-as 1
> neighbor 1.1.1.1 update-source Loopback0 **
> --> the interface for EBGP-Peering with R1 is L0. is right???
>
>
>==> R1 has no route to the 2.2.2.2/24, The EBGP-Peers Can't established!!
> How can i make a EBGP-peer between R1 & R2 ???
>
>R1#sh ip bgp summ
>BGP router identifier 172.168.70.1, local AS number 1
>BGP table version is 1, main routing table version 1
>
>Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ
>Up/Down State/PfxRcd
>2.2.2.2 4 2 0 0 0 0 0 never Active
>
>R2#sh ip bgp summ
>BGP router identifier 2.2.2.2 local AS number 2
>BGP table version is 1, main routing table version 1
>
>Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ
>Up/Down State/PfxRcd
>1.1.1.1 4 1 38 38 0 0 0 00:29:47 Active
>
>
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