[c-nsp] BGP ip addresses re-route to specific link

[Dracul]

> you can use "BGP Conditional Route Injection" to generate the /28. (it
shud be a child subnet out of the parent /24). then filter the prefixes so
select which all upstreams shud receive this injected
> subnet.

thanks swap will explore your suggestion.


>Be aware that many (most) ISPs would filter subnets longer than /24, so
>your /28 would be most likely filtered (even if you direct upstream
>would send it through).
>Arie

Thanks arie, will keep it in mind.

On Tue, Jan 5, 2010 at 5:00 PM, Ivan Pepelnjak <ip at ioshints.info> wrote:

> Are you trying to do destination-based routing (packet TO specific address
> should go over specific link) or source-based routing (packet FROM specific
> /28 should go over specific upstream link)?
>
>
Hi Ivan, I guess both. i just want to have a specific ip block traffic
contained to a specific link ( the ip addresses are broadcast under BGP)

regards,
Chris

> -----Original Message-----
> > From: Dracul [mailto:chris.garzon at gmail.com]
> > Sent: Tuesday, January 05, 2010 8:05 AM
> > To: cisco-nsp at puck.nether.net
> > Subject: [c-nsp] BGP ip addresses re-route to specific link
> >
> > Hi there,
> >
> > I was wondering if you could do a segregate route, for specfic ip
> > addresses
> > under BGP going only to a specific link.
> > for example if I have /24 default route BGP pool and I want only /28 ip
> > addresses using upstream1 and not by any
> > account go through upstream2. The rest would still be using the usual BGP
> > routing behavior. THanks!
> >
> > regards,
> > Chris
>
>
>