Couldn't you also have RB2 route-reflect the info to
RB1?
Mike
--- ElephantChild <[EMAIL PROTECTED]> wrote:
> On 18 Oct 2000, FAISAL ATHAR wrote:
>
> > Can you please describe this in detail with some
> example.
>
> AS64512 AS64513 AS64514
> 10.0.0.0/16 10.1.0.0/16 10.2.0.0/16
> RA1<===>RB1 RB3<===>RC1
> \ /
> RB2
>
> - means uses an IGP
> = means uses BGP
>
> In this setup, RB3 can't carry to RC1 the info that
> 10.0.0.0/16 is in AS
> 64512, since the IGP only tells it that RB2 is the
> next hop on the way
> to it. That means that the loop detection feature of
> BGP, and indeed
> most of its path selection mechanisms, is
> unavailable.
>
> To fix it, you have to make RB1 and RB3 peer
> together, like this:
>
> AS64512 AS64513 AS64514
> 10.0.0.0/16 10.1.0.0/16 10.2.0.0/16
> RA1<===>RB1<===>RB3<===>RC1
> \ /
> RB2
>
> Note that RB2 doesn't need to peer with either RB1
> or RB3, or indeed to
> run BGP at all.
>
> > ElephantChild <[EMAIL PROTECTED]> wrote:
> > On 18 Oct 2000, FAISAL ATHAR wrote:
> >
> > > Can any one explain the purpose of Internal
> BGP.According to my knowledge
> > it
> > > it used between sites with in the same
> autonomous system.
> >
> > True, assuming you mean routers.
> >
> > > But Question is that BGP is Exterior routing
> protocol,develop mainly to
> > > connect two different autonomous systems, then
> what is the purpose of
> > Using
> > > Internal BGP, within the same autonomous sytems
> although we could use any
> > > other Interior routing protocol there.
> >
> > You need internal BGP to carry path information
> between external BGP
> > routers, eg for a transit AS.
>
> --
> Bungee jumping and skydiving are for wimps. If you
> want to experience
> true gut-wrenching terror, have children. --Dusty
> Rhoades.
>
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