> Perhaps I am missing something from your advantage list, but why would > you want to exchange routing information with a network to which you > don't have a connection due to a local failure? I think you are > attempting to abstract routing from the underlying physical > infrastructure a bit too much. If the power is out in the carrier pop > to which you are connected, they don't have a way to give you traffic > so why would a multi-hop session help. > > BGP being down is rarely something that happens on its own, it is > typically due to something far more physical (router failure, pop > outage, circuit outage, etc).
any time routing signaling comes from a source to which you can not directly deliver payload you will be in a load of grief when something goes wrong. abjure route servers. route reflectors should be in the data plane, ... in general, when layer N is not congruent with layer N-1 (and N+1), you have a recipe for exciting times. and well run ops is not supposed to be exciting. randy
