North American Network Operators Group
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RE: Probe dns service - anycast network

  • From: Anshuman Kanwar
  • Date: Tue Nov 23 14:32:09 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: [email protected]
[mailto:[email protected]] On Behalf Of Gere geomag
Sent: Thursday, November 11, 2004 3:03 PM
To: [email protected]
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