[c-nsp] Inter ISP routing question

[David Barak]

--- Pete Templin <petelists at templin.org> wrote:
> Roy wrote:
> > Chris Smith wrote:
> 
> > You can make it work by having provider B add
> static routing table 
> > entries for the IP space.  This isn't recommended
> since you will now 
> > have inconsistent AS numbers on your routes and
> that may introduce more 
> > problems.  The correct answer is to add BGP to
> keep all the routes 
> > consistent.
> 
> This only creates inconsistencies if they announce
> the routes via BGP.
> 

What provider doesn't announce their own static routes
via BGP?

> If your only objective is to override the RPF check,
> static routes on 
> provider B's router will fix this.  You will see
> incoming traffic from 
> that connection if any customers on that router send
> you traffic, but 
> that's probably not a bad thing anyway.

ugh.  The original poster was concerned with being
able to send and receive traffic across the (larger)
provider B link - the right way to do that is BGP.

-David

David Barak
Need Geek Rock?  Try The Franchise: 
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