IPv4 ANYCAST setup

Florian Weimer fweimer at bfk.de
Fri Mar 26 09:03:22 CDT 2010

* 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

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

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