[124182] in North American Network Operators' Group

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Re: IPv4 ANYCAST setup

daemon@ATHENA.MIT.EDU (Florian Weimer)
Fri Mar 26 10:03:55 2010

To: Jeroen Massar <jeroen@unfix.org>
From: Florian Weimer <fweimer@bfk.de>
Date: Fri, 26 Mar 2010 14:03:22 +0000
In-Reply-To: <4BACB585.5040805@spaghetti.zurich.ibm.com> (Jeroen Massar's
	message of "Fri\, 26 Mar 2010 14\:24\:21 +0100")
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

* Jeroen Massar:

> Simple recipe:
>  - Box with:
>    - Your favourite OS
>    - Quagga or OpenBGPd
>    - Your favourite DNS server
>  - Announce the IP of the anycast node in BGP
>  - Monitor the DNS server, when it does not work kill your local BGPd
>    and notify the admins that it broke

This is fine if you just use BGP to indirectly hook into your IGP.
For global anycast, you need a sufficiently short prefix with no
non-anycast services on it.  This can be difficult to justify for
newcomers.

--=20
Florian Weimer                <fweimer@bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstra=DFe 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99


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