Facebook post-mortems...

Kain, Becki (.) bkain1 at ford.com
Tue Oct 5 15:51:15 UTC 2021

Why ever would have a card reader on your external facing network, if that was really the case why they couldn't get in to fix it?

-----Original Message-----
From: NANOG <nanog-bounces+bkain1=ford.com at nanog.org> On Behalf Of Patrick W. Gilmore
Sent: Monday, October 04, 2021 10:53 PM
To: North American Operators' Group <nanog at nanog.org>
Subject: Re: Facebook post-mortems...

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Update about the October 4th outage



> On Oct 4, 2021, at 9:25 PM, Mel Beckman <mel at beckman.org> wrote:
> The CF post mortem looks sensible, and a good summary of what we all saw from the outside with BGP routes being withdrawn.
> Given the fragility of BGP, this could still end up being a malicious attack.
> -mel via cell
>> On Oct 4, 2021, at 6:19 PM, Jay Hennigan <jay at west.net> wrote:
>> On 10/4/21 17:58, jcurran at istaff.org wrote:
>>> Fairly abstract - Facebook Engineering - https://clicktime.symantec.com/3CDR8hh26akhF2bhzN9S5cv7Vc?u=https%3A%2F%2Fm.facebook.com%2Fnt%2Fscreen%2F%3Fparams%3D%257B%2522note_id%2522%253A10158791436142200%257D%26path%3D%252Fnotes%252Fnote%252F%26_rdr <https://clicktime.symantec.com/3KA6ZdSTySHYFm2mVQy4h5j7Vc?u=https%3A%2F%2Fm.facebook.com%2Fnt%2Fscreen%2F%3Fparams%3D%7B"note_id":10158791436142200}&path=/notes/note/&_rdr>
>> I believe that the above link refers to a previous outage. The duration of the outage doesn't match today's, the technical explanation doesn't align very well, and many of the comments reference earlier dates.
>>> Also, Cloudflare’s take on the outage - https://clicktime.symantec.com/3EkkFFLL3nVZGvWBnB834uN7Vc?u=https%3A%2F%2Fblog.cloudflare.com%2Foctober-2021-facebook-outage%2F <https://clicktime.symantec.com/3EkkFFLL3nVZGvWBnB834uN7Vc?u=https%3A%2F%2Fblog.cloudflare.com%2Foctober-2021-facebook-outage%2F>
>> This appears to indeed reference today's event.
>> --
>> Jay Hennigan - jay at west.net
>> Network Engineering - CCIE #7880
>> 503 897-8550 - WB6RDV

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