[c-nsp] BGP routes: 207k + 157k = 238k ???...

[Vincent De Keyzer]

> Welcome to BGP.
Thank you.
>
> A BGP speaker is only going to advertise its best external paths via 
> iBGP.  If it has selected your other BGP speaker as its best path, it 
> will not (currently) advertise the externals that are not the best path.
So there is some sort of withdrawal mechanism: first both speakers 
announce via iBGP all their 238k routes to each other, and then they 
send a 'withdraw' message for the routes that they find out to be better 
from the peer.

This withdrawal thing is basically what I was missing.

Thanks to all off-list and on-list

Vincent