[c-nsp] Forcing routes

Gary Roberton gary.ciscomail at gmail.com
Wed Jun 4 12:46:56 EDT 2008


How do you mean?

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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