nanog mailing list archives
Re: .ORG problems this evening
From: Todd Vierling <tv () duh org>
Date: Thu, 18 Sep 2003 13:01:18 -0400 (EDT)
On Thu, 18 Sep 2003, E.B. Dreger wrote: : TV> Anycasting only works as a redundancy scheme when you have a : TV> mesh of *partially* overlapping BGP advertisements, so that a : TV> client has a guarantee that at least one address in the mix : TV> is located elsewhere from the rest. : : Don't be silly. This is like claiming that multihoming only : works if you spread services over different netblocks. We're talking about application (DNS) redundancy here, not transport-level (6to4 anycast RFC comes to mind) redundancy. With this in mind: : Ergo, that's why one withdraws the routes when a pod dies. : Routes need to reflect what's up. BGP doesn't know when a DNS server dies. Therein lies the findamental problem of using anycast as an application redundancy scheme. -- -- Todd Vierling <tv () duh org> <tv () pobox com>
Current thread:
- Re: .ORG problems this evening, (continued)
- Re: .ORG problems this evening Rodney Joffe (Sep 17)
- Re: .ORG problems this evening John Brown (Sep 17)
- Re: .ORG problems this evening Majdi S. Abbas (Sep 18)
- Re: .ORG problems this evening Todd Vierling (Sep 18)
- Re: .ORG problems this evening just me (Sep 18)
- Re: .ORG problems this evening Todd Vierling (Sep 18)
- Re: .ORG problems this evening Leo Bicknell (Sep 18)
- Re: .ORG problems this evening Todd Vierling (Sep 18)
- Re: .ORG problems this evening David Lesher (Sep 18)
- Re: .ORG problems this evening E.B. Dreger (Sep 18)
- Re: .ORG problems this evening Todd Vierling (Sep 18)
- Re: .ORG problems this evening E.B. Dreger (Sep 18)
- Re: .ORG problems this evening bmanning (Sep 18)
- Re: .ORG problems this evening E.B. Dreger (Sep 18)
- Re: .ORG problems this evening Keptin Komrade Dr. BobWrench III esq. (Sep 18)
- anycast (Re: .ORG problems this evening) E.B. Dreger (Sep 18)
- Re: anycast (Re: .ORG problems this evening) E.B. Dreger (Sep 18)
- Re: anycast (Re: .ORG problems this evening) Todd Vierling (Sep 18)
- Re: anycast (Re: .ORG problems this evening) David G. Andersen (Sep 22)
- Re: anycast (Re: .ORG problems this evening) Patrick (Sep 22)
- Re: anycast (Re: .ORG problems this evening) E.B. Dreger (Sep 22)
- Re: .ORG problems this evening Todd Vierling (Sep 18)