On 2015-03-16 22:13, Brian Kantor wrote:
(Please trim inclusions from previous messages) _______________________________________________ On Mon, Mar 16, 2015 at 10:33:31PM +0200, Marius Petrescu wrote:
- BGP to IPIP results in a correct routing via 44.0.0.1 (I can not
check if it is filtered at ampr-gw, it probably is)
It's not filtered at amprgw, it's misrouted by a default route in an upstream router. It is not practical to delete that default route and replace it with some 200+ individual routes, which is what it would take to eliminate the default route.
Actually, the border routers of UCSD should just allow more specific announcements of 44/8 to enter their IRP (iBGP, OSPF, ISIS, whatever) from their upstreams. As the more specific route allows wins, the default route 44/8 could remain in place.
In that case routing at UCSD would work like for anybody else. If there is a more specific route for a subnet of 44/8 honor that route and use it, if there is no specific route for a subnet of 44/8 than use the 44/8 route.
However, all this assumes that the IRP at UCSD is based on routing protocols other than "static".
73 de Marc