nanog mailing list archives
Re: [NANOG] Did Youtube not pay their domain bill?
From: Steve Gibbard <scg () gibbard org>
Date: Mon, 5 May 2008 03:25:51 -0700 (PDT)
On Sun, 4 May 2008, Paul Vixie wrote:
scg () gibbard org (Steve Gibbard) writes:The right solution is to design the anycast servers to be as sure as possible that the route will go away when you want it gone, but to have multiple non-interdependent anycast clouds in the NS records for each zone. If the local node in one cloud does fail improperly, something will still be responding on the other cloud's IP address.the need for multiple independent anycast clouds is an RFC 2182 topic, but joe's innovation both in ISC-TN-2004-1 and in his earlier ISC-TN-2003-1 (see <http://www.isc.org/pubs/tn/isc-tn-2003-1.txt> is that if each anycast cluster is really several servers, each using OSPF ECMP, then you can lose a server and still have that cluster advertising the route upstream, and only when you lose all servers in a cluster will that route be withdrawn.
This is getting into minutia, but using multipath BGP will also accomplish this without having to get the route from OSPF to BGP. This simplifies things a bit, and makes it safer to have the servers and routers under independent control. But yes, Joe's ISC TechNote is an excellent document, and was a big help in figuring out how to set this up a few years ago. -Steve _______________________________________________ NANOG mailing list NANOG () nanog org http://mailman.nanog.org/mailman/listinfo/nanog
Current thread:
- Re: [NANOG] Did Youtube not pay their domain bill?, (continued)
- Re: [NANOG] Did Youtube not pay their domain bill? Brant I. Stevens (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? Eric Spaeth (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? David Coulson (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? Marshall Eubanks (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? sthaug (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? Mike Lewinski (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? Kevin Blackham (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? Steve Gibbard (May 03)
- Re: [NANOG] Did Youtube not pay their domain bill? Paul Vixie (May 04)
- Re: [NANOG] Did Youtube not pay their domain bill? Deepak Jain (May 04)
- Re: [NANOG] Did Youtube not pay their domain bill? Steve Gibbard (May 05)
- [NANOG] OSPF minutia, and, technote publication venues Paul Vixie (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Mr. James W. Laferriere (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues David Andersen (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Marshall Eubanks (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Chris Grundemann (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Steven M. Bellovin (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Roland Dobbins (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Steven M. Bellovin (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Paul Vixie (May 05)
- Re: [NANOG] OSPF minutia, and, technote publication venues Roland Dobbins (May 05)