[c-nsp] Inter ISP routing question

[Pete Templin]

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.

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.

pt