Probe dns service - anycast network

Tue Nov 23 19:30:08 UTC 2004

http://www.digitarchy.com/anycast/phcd.tgz

Will do pretty much what you want. My target was a HTTP
based service rather than DNS. Modification for UDP
health checks should be trivial. 

-ansh

-----Original Message-----
From: owner-nanog at merit.edu
[mailto:owner-nanog at merit.edu] On Behalf Of Gere geomag
Sent: Thursday, November 11, 2004 3:03 PM
To: nanog at merit.edu
Subject: Probe dns service - anycast network

Hi,
We are thinking of deploying anycast in our network for
dns servers.
I have the following scenario: 
 - 10 server DNS (isc-bind) , linux and zebra for
propagating ospf ip anycast.

Are there someone who has developed a "solid scripts
(perl/c/ecc..)"
that is used to probe a dns service (udp/tcp port 53) and
in case of failure (or max lookup query time problem)
automatic shutdown ospf annunce or remove a server from a
anycast network?

Best regards
Antony Findanno