RE: BGP Confederation Next hop processing between sub AS

From: atif raees (atifraees@hotmail.com)
Date: Tue Apr 15 2008 - 05:43:38 ART


Thanks guys for explanation

Atif Raees

> Date: Tue, 15 Apr 2008 13:41:05 +0530
> From: tarun.ccie@gmail.com
> To: wish2ie@gmail.com
> Subject: Re: BGP Confederation Next hop processing between sub AS
> CC: atifraees@hotmail.com; ccielab@groupstudy.com
>
> So just to reiterate what's given on that link & make things clarer.
>
> In case of a Confederation Sub-AS
>
> 1) For next-hop processing it behaves as a IBGP neighbor.
>
> 2) For the routing loop rule which says that an IBGP neighbor would not
pass
> an update from an IBGP neighbor to anotther IBGP neighbor, a confderation
> peer would behave as an EBGP neighbor i.e a update learned by a different
> confederation sub-as peer would be be passed on to another confederation
> sub-as peer.
>
> That is the reason they say that confederation peering has mixed
> characterstics of IBGP & EBGP peerings.
>
> On 4/15/08, dara tomar <wish2ie@gmail.com> wrote:
> >
> > *Hoping this should be of some help,
> >
> >
> > http://www.cisco.com/warp/public/459/bgpfaq_5816.shtml#twelve
> >
> > Regards,
> > Dara*
> >
> >
> > On Tue, Apr 15, 2008 at 10:15 AM, atif raees <atifraees@hotmail.com>
> > wrote:
> >
> > > Dear all
> > >
> > > can some body suggest if i am using BGP confederation, how would next
> > hop
> > > processing works between sub AS.
> > > i have learned that sub AS to sub AS peering is a EBGP peering then
when
> > a
> > > route is advertise why the next hop for the route doesn't change.
> > >
> > > Regards
> > > Atif Raees
> > >
> > >
> > >
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Refresh_messenger_video_042008
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