Some doubts on large scale BGP/AS design and black hole routing risk

Mon Apr 4 13:07:57 UTC 2016

On 4/Apr/16 14:58, Christopher Morrow wrote:

>
> so (as bill points out) plan to localize subnets to each pop. (do not
> number customers in pop1 in the same /24 as customers in pop2)

Yes.

May lead to some global de-aggregation, but can't really avoid that.

>
> be aware of gre / ip-in-ip forwarding limitations

I wouldn't touch it, myself.

I'd rather devote the sleepless nights to fixing the backhaul.

>
>
> different providers, different entrance facilities in the
> building(s), different conduits out of the area... and hope that
> somewhere along the path providerA and B didn't share conduit or
> capacity-swap you to a single path :)

+1.

Mark.