[c-nsp] BGP network stops being advertized

[Robert E. Seastrom]

Deepak Jain <deepak at ai.net> writes:

> In the "old" days, null was handled by CPU (software switched), so lots
> of us old-timers got into the habit of using loopback instead of
> null. On a modern platform it should make no operational difference
> provided you have everything you need set up properly. (null routing
> the /16, for example, might be bad if you ever actually try to route
> that whole prefix instead of just subs -- as it would be specific and
> static).

That's why you put a high distance metric on static pull-up routes.
Any "real" static routes or connected interfaces will override

ip route 192.148.252.0 255.255.254.0 Loopback0 240

-r