From: Richard Geiger (geiger_rich@xxxxxxxxxxx)
Date: Mon Jan 07 2002 - 02:23:40 GMT-3
Weight, Local-pref, as-path, are all used to decide what in the BGP table
will ten be imported into the routing table as the preferred path.
As R2 and R3 each only have one path to the route in the BGP table they mean
nothing. Remember that R2 will not forward the path to R3 because it is an
external route learned from a internal neighbor. Now if R2 was also peered
with the outside As this would work.
I can route-map with the next hop statement and send it to R2, but the
problem is that if R2 goes down it will not remove the next hop path, (i've
tried a lot of variations of this). I've also tried tagging the route in
BGP and manipulating it in IGP with a route-map but have had problems with
the local policy matching everything even if the route is tagged.....
-Rich
>From: garry baker <fallow46@yahoo.com>
>To: Richard Geiger <geiger_rich@hotmail.com>
>Subject: Re: BGP Help 2 days untill Lab
>Date: Sun, 6 Jan 2002 21:07:05 -0800 (PST)
>
>Richard,
>
>weight should work on r3. give the link to r2 a hiher
>weight and you should be fine. if this doesn't work
>let me know and i will play when i get home from work
>and let you know. later on tonight
>
>Garry
>--- Richard Geiger <geiger_rich@hotmail.com> wrote:
> > The senerio is that you have 1 BGP external router
> > AS100 connected to an
> > internal router AS999. You are using the next hop
> > command because you are
> > not using IGP for the outside route.
> >
> > AS100 lo0 10.10.10.1/24
> > |
> > AS999 -R1
> > / \
> > AS999-R2 --- As999 -R3
> >
> > All three of the internals are peered to each other.
> > R2 and R3 both show the next hop to 10.10.10.0 to be
> > the Loopback
> > on R1
> >
> > As there is only one path local-pref,weight, as-path
> > won't help here.
> > How do you tell R3 to use a path through R2 to Reach
> > 10.10.10.1
> >
> >
> >
> >
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