nanog mailing list archives
Re: DNS pulling BGP routes?
From: William Herrin <bill () herrin us>
Date: Thu, 7 Oct 2021 13:30:14 -0700
On Thu, Oct 7, 2021 at 10:23 AM Masataka Ohta <mohta () necom830 hpcl titech ac jp> wrote:
William Herrin wrote:Facebook's _internal_ DNS, while not anycasted, followed a similar logic: if the data center is isolated and their data goes stale, they stop serving potentially wrong answers.As I already wrote, that is a standard mechanism of DNS with SOA expiration period as is documented in rfc1034
Then we agree: The failure mode was that after the data centers disconnected from each other, all their DNS expired, breaking the tools they'd normally use to recover. Facebook withdrawing the BGP routes to its anycasted public DNS servers as they expired made no difference. Regards, Bill Herrin -- William Herrin bill () herrin us https://bill.herrin.us/
Current thread:
- Re: DNS pulling BGP routes?, (continued)
- Re: DNS pulling BGP routes? William Herrin (Oct 07)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 07)
- Re: DNS pulling BGP routes? Tom Beecher (Oct 07)
- Re: DNS pulling BGP routes? Bjørn Mork (Oct 07)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 07)
- Re: DNS pulling BGP routes? William Herrin (Oct 07)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 07)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 07)
- Re: DNS pulling BGP routes? William Herrin (Oct 07)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 07)
- Re: DNS pulling BGP routes? William Herrin (Oct 07)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 07)
- Re: DNS pulling BGP routes? Sabri Berisha (Oct 07)
- Re: DNS pulling BGP routes? Mark Tinka (Oct 07)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 08)
- Re: DNS pulling BGP routes? Tom Beecher (Oct 08)
- Re: DNS pulling BGP routes? Carsten Bormann (Oct 08)
- Re: DNS pulling BGP routes? William Herrin (Oct 08)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 08)
- Re: DNS pulling BGP routes? Christopher Morrow (Oct 08)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 09)