[c-nsp] LDPv6 Census Check
Mark Tinka
mark.tinka at seacom.mu
Thu Jun 11 06:33:51 EDT 2020
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.
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