Re: Facebook post-mortems...

[Tom Beecher <beecher () beecher cc>]

> My speculative guess would be that OOB access to a few outbound-facing
> routers per DC does not help much if a configuration error withdraws the
> infrastructure prefixes down to the rack level while dedicated OOB to
> each RSW would be prohibitive.

If your OOB has any dependence on the inband side, it's not OOB.

It's not complicated to have a completely independent OOB infra , even at
scale.

On Tue, Oct 5, 2021 at 8:40 AM Hauke Lampe <lampe () hauke-lampe de> wrote:

> On 05.10.21 07:22, Hank Nussbacher wrote:
>
> > Thanks for the posting.  How come they couldn't access their routers via
> > their OOB access?
>
> My speculative guess would be that OOB access to a few outbound-facing
> routers per DC does not help much if a configuration error withdraws the
> infrastructure prefixes down to the rack level while dedicated OOB to
> each RSW would be prohibitive.
>
>
> https://research.fb.com/wp-content/uploads/2021/03/Running-BGP-in-Data-Centers-at-Scale_final.pdf