nanog mailing list archives
Re: DNS pulling BGP routes?
From: Mark Tinka <mark@tinka.africa>
Date: Thu, 7 Oct 2021 06:58:58 +0200
On 10/7/21 00:22, Michael Thomas wrote:
But it wasn't just their DNS subnets that were pulled, I thought. I'm obviously really confused. Anycast to a DNS server makes sense that they'd pull out if they couldn't contact the backend. But I thought that almost all of their routes to the backend were pulled? That is, the DFZ was emptied of FB routes.
During the outage, we kept serving traffic to Facebook in various locations. So it would seem that while a large amount of their NLRI left the DFZ, it wasn't all of them.
However, what was left was not sufficient to actually keep typical services up, including their DNS.
Mark.
Current thread:
- RE: DNS pulling BGP routes?, (continued)
- RE: DNS pulling BGP routes? Jean St-Laurent via NANOG (Oct 07)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 07)
- Re: DNS pulling BGP routes? William Herrin (Oct 06)
- Re: DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? Jon Lewis (Oct 06)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 06)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 06)
- Re: Facebook post-mortems... Hank Nussbacher (Oct 05)
- Re: Facebook post-mortems... Mark Tinka (Oct 05)
- Re: Facebook post-mortems... Masataka Ohta (Oct 06)
- Re: Facebook post-mortems... Michael Thomas (Oct 05)
- Re: Facebook post-mortems... Mel Beckman (Oct 04)
- Re: Facebook post-mortems... Patrick W. Gilmore (Oct 04)
- Re: Facebook post-mortems... Hank Nussbacher (Oct 04)
- Re: Facebook post-mortems... av (Oct 05)
- Re: Facebook post-mortems... Mark Tinka (Oct 05)