Re: draft-eng-nalawade-ospf-tunnel-cap-00.txt

[Yakov Rekhter <[e-mail]>]

> Sandy,
>
> > In a VPN enviroment, OSPF converges in sub-seconds while BGP in minutes,
> > OSPF can deliver the tunnel endpoint information much faster than BGP,
> > enabling faster traffic reachibility.
>
> I can't agree with this statement.
>
> BGP convergence intra domain - note within _single_ domain can be in
> fact almost as fast for tunnel AFI/SAFI then for OSPF. In fact with
> default timers in OSPF and with prioritizing tunnel AFI/SAFI first (as
> it should be the case) I could argue that even today with most BGP
> implementations it will converge faster then OSPF when the number of
> your P routers is decent.
>
> I think we could debate more - and yes this draft itself solves some
> practical cases with not too big overhead for IGPs - but let's at least

Could you please enumerate these cases.

Yakov.