Re: Facebook post-mortems...

[Hank Nussbacher <hank () interall co il>]

On 05/10/2021 13:17, Hauke Lampe 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

Thanks for sharing that article.  But OOB access involves exactly that - 
Out Of Band - meaning one doesn't depend on any infrastructure prefixes 
or DFZ announced prefixes.  OOB access is usually via a local ADSL or 
wireless modem connected to the BFR.  The article does not discuss OOB 
at all.

Regards,
Hank