Re: eBGP peering one side with loopback IP

Hi All,

Thank you for all your replies. It helped me.

Mathew

On Thursday, July 18, 2013, Mohammad Mousa wrote:

> Mathew,
>
> R1
> ---
> router bgp 100
> neighbor 12.0.0.2 remote-as 200
> neighbor 12.0.0.2 update-source Loopback0
>
> R2
> ---
> router bgp 200
> neighbor 1.1.1.1 remote-as 100
> neighbor 1.1.1.1 ebgp-multihop 255
>
> R1#sh ip bgp all summ
> BGP router identifier 1.1.1.1, local AS number 100
> BGP table version is 1, main routing table version 1
>
> Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
> State/PfxRcd
> 12.0.0.2 4 200 11 11 1 0 0 00:08:35
> 0
>
> As long as you source your update messages from the Lo0 on R1, and you
> have neighbor statement " Neighbor 1.1.1.1" on R2. Hence, R2 should know
> how to reach Lo0 of R1. It's doable.
>
> HTH,
>
> Mohammad Mousa
> CCIE #36990
>
>
> > Date: Thu, 18 Jul 2013 06:08:14 +1000
> > Subject: Re: eBGP peering one side with loopback IP
> > From: mathewfer_at_gmail.com <javascript:_e({}, 'cvml',
> 'mathewfer_at_gmail.com');>
> > To: nadeemkool_at_yahoo.com <javascript:_e({}, 'cvml',
> 'nadeemkool_at_yahoo.com');>
> > CC: ccielab_at_groupstudy.com <javascript:_e({}, 'cvml',
> 'ccielab_at_groupstudy.com');>
> >
> > Hi Nadeem,
> >
> > Thanks for the reply,
> > It looks like you have used loopback IP on both routers.
> > What I am looking for is for only one side to use loopback IP for
> peering &
> > other router to use its directly connected interface for peering.
> >
> > Any more ideas?
> >
> > Mathew.
> >
> > On Thursday, July 18, 2013, Nadeem Anjum wrote:
> >
> > > R1(fa0/0)---------R2(Lo0)
> > >
> > > R1
> > > router bgp 100
> > > neigh 2.2.2.2 remote-as 200
> > > neigh 2.2.2.2 multihop 255
> > >
> > > R2
> > > router bgp 200
> > > neigh 1.1.1.1 remote-as 100
> > > neigh 1.1.1.1 multihop 255
> > >
> > >
> > >
> > > Thanks,
> > > Nadeem Anjum
> > >
> > > ------------------------------
> > > *From:* Mathew <mathewfer_at_gmail.com <javascript:_e({}, 'cvml',
> 'mathewfer_at_gmail.com');> <javascript:_e({}, 'cvml',
> > > 'mathewfer_at_gmail.com <javascript:_e({}, 'cvml',
> 'mathewfer_at_gmail.com');>');>>
> > > *To:* Cisco certification <ccielab_at_groupstudy.com <javascript:_e({},
> 'cvml', 'ccielab_at_groupstudy.com');> <javascript:_e({},
> > > 'cvml', 'ccielab_at_groupstudy.com <javascript:_e({}, 'cvml',
> 'ccielab_at_groupstudy.com');>');>>
> > > *Sent:* Wednesday, July 17, 2013 6:24 PM
> > > *Subject:* eBGP peering one side with loopback IP
> > >
> > > Hi
> > >
> > > What is the minimum eBGP peer configuration to get 2 directly connected
> > > routers (back-to-back) but one router to use the IP of a loopback of
> the
> > > other router?
> > >
> > > I hope it is possible to establish ebgp peer.
> > >
> > > Any help?
> > >
> > > Mathew
> > >
> > >
> > > --
> > > Thanks
> > >
> > > Mathew
> > >
> > >
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> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
> > --
> > Thanks
> >
> > Mathew
> >
> >
> > Blogs and organic groups at http://www.ccie.net
> >
> > _______________________________________________________________________
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> >
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> >
> >
> >
> >
> >
>

-- 
Thanks
Mathew
Blogs and organic groups at http://www.ccie.net