nanog mailing list archives
Re: DNS pulling BGP routes?
From: Masataka Ohta <mohta () necom830 hpcl titech ac jp>
Date: Fri, 8 Oct 2021 00:26:31 +0900
Bjørn Mork wrote:
This is quite common to tie an underlying service announcement to BGP announcements in an Anycast or similar environment.Yes, that is a commonly seen mistake with anycast.You don't know what you're talking about.I do but you don't.https://datatracker.ietf.org/doc/html/rfc4786#section-4.4.1 Not a mistake. BCP.
My comment on the rfc is that it is simply wrong. See also: https://datatracker.ietf.org/doc/html/rfc3258 While it would be possible to have some process withdraw the route for a specific server instance when it is not available, there is considerable operational complexity involved in ensuring that this occurs reliably. Given the existing DNS failover methods, the marginal improvement in performance will not be sufficient to justify the additional complexity for most uses. which was our consensus at that time in DNSOP. I have no idea why it was forgotten. Masataka Ohta
Current thread:
- Re: Facebook post-mortems..., (continued)
- Re: Facebook post-mortems... Bjørn Mork (Oct 06)
- DNS pulling BGP routes? Michael Thomas (Oct 06)
- Re: DNS pulling BGP routes? J. Hellenthal via NANOG (Oct 06)
- Re: DNS pulling BGP routes? Jared Mauch (Oct 06)
- Re: DNS pulling BGP routes? Blake Dunlap (Oct 06)
- Re: DNS pulling BGP routes? Masataka Ohta (Oct 06)
- 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)