[c-nsp] best way to announce ibgp routes

[Justin M. Streiner]

On Tue, 16 Aug 2005, matthew zeier wrote:

>> As Justin indicated, you could announce the routes from the borders and
>> allow the cores to simply be route reflectors.  On the other hand,
>> initiating the routes from the cores (where the customers are located) may
>> be beneficial if you wish to have those routes withdrawn if the
>> interface(s) to the customer segments/sites goes down.
>
> Customers are all in my address space, not their own.  So off the core I might
> assign a /29 to a customer out of my /19.

Single-homed customers who get address space from your address block 
should be covered by the aggregates you announce to your upstreams 
(x.x.x.x/19) as far as reachability and routability goes.

jms