> Maybe I'm missing something, but the core issue is that the NO- > EXPORT'ed anycast instance has a higher localpref inside the AS it's > being advertised to, and as such supressing the non-NO_EXPORT'ed > prefix. The "exportable" prefix gets suppressed at a point on the > network such that the peering routers never see it, so it never makes > it out of that AS.
it willl lose the best path war at the point it is down-preffed. if that is done at the entrance, then the route is useless. if it is done at some intermediate points, it's hell to create and maintain a consistent net-wide config. randy