On 11/Jun/20 12:28, Robert Raszuk wrote:
> > Spot on ! OSPF is not any better. > > And yes you can build a global flat IGP. But this is not a design I > would endorse in most networks. > > Reason is that most networks do not have latest connectivity > restoration techniques and still wait for typical "IGP convergence" So > if you flood globally you need to adjust your IGP & SPF timers with > the notion of global flooding. > > If you however scope your flooding domains to be relatively small (say > per 1-few regions in a continent) you can easily and safely make those > timers much more aggressive hence significantly reducing connectivity > restoration times upon failures. Well, we operate a single IS-IS L2 domain across 3 continents. We use what-I'd-call aggressive IS-IS detection and convergence timers, in addition to BFD and LFA/IP-FRR. We do very okay. Mark. _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
