[c-nsp] (no subject)

[Paul Wozney]

Okay so I've got two BGP routers here, accepting partial routes - one
carrier to each router. Each carrier advertises a default route. I use an
as-path filter to limit learned routes to those of the carrier +1 ASn:

ip as-path access-list 11 permit ^NNNN_[0-9]*$


One carrier has now had two outages in the last year where they've lost
their upstream. They continue to advertise a default route to us, so our
network experiences failures until we kill the link.

It strikes me that if we had FULL routes (and no default route accepted) we
could react automatically to failures like this - we could share tables
between the routers and if one carrier lost half their routes we'd pick
them up from the other router.

Is this just how life with partial routes is? Or is there something else I
can do?