[c-nsp] Forcing routes

[Gary Roberton]

I assume you mean to prepend AS2 on R2 so that RouterX receives the path
AS2, AS2, from R2, therefore making the path seem longer and following the
normal BGP algorithm.

Is this what you meant?

On Wed, Jun 4, 2008 at 5:38 PM, Maarten Moerman <mmoerman at ebay.com> wrote:

> Hi Gary,
>
> AS-path prepending?
>
> Maarten
>
>
> --
> Sr. Network Engineer | eBay / Marktplaats.nl
> Wibautstraat 224 | 1097 DN | Amsterdam
> E-mail: mmoerman at ebay.com | Mobile: +31 6 55 1 222 47
>
>
> On 6/4/08 6:35 PM, "Gary Roberton" <gary.ciscomail at gmail.com> wrote:
>
> > I have a customer who is multihomed to my network.  He has RouterX.  I
> have
> > R1 and R2 connected to his RouterX.  My R1 is in AS1 and my R2 is in AS2.
>  I
> > want to sent him a BGP advertisement in such a way that he always prefers
> to
> > use R1.
> >
> > I cannot use MEDs as the AS numbers of my R1 and R2 are different.
> > I cannot use local preference as I am not allowed to change anything on
> his
> > route (don't ask just take it as a given).
> > My path lengths are the same.
> >
> > How can I force his router to always choose my R1 path as the best one?
> >
> >
> > Once I have done this I then want to be able to turn this on or off based
> on
> > a Tunnel on R1 being up (which I guess will be object tracking) but until
> I
> > know how to solve the first part - I can't tackle the second part.
> >
> > Thanks,
> >
> > Gary
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