On 2013-03-18, at 08:53, Arturo Servin <arturo.ser...@gmail.com> wrote:
> And about the routing table size, it is not multihomed sites the > offenders, it is large ISPs fragmenting because of traffic engineering > or because lack of BGP knowledge. The usual concern with multi-homed end sites is that end sites with IPv4 PA addresses assigned from provider X who wish to multi-home with provider Y wind up adding at least two entries to the global table, a more specific route to each of X and Y (which X will need to leak beneath the covering supernet if it wants to deliver the customer any traffic). I don't know of any recent analysis which differentiates between this multi-homing pressure on the global table vs. inter-domain traffic engineering or gratuitous deaggregation, but it's fair to say I have not been looking. Joe
