North American Network Operators Group|
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Re: large organization nameservers sending icmp packets to dns servers.
On Aug 6, 2007, at 1:47 PM, John L wrote:
Why would they ping rather than just sending the query to all of the
The client DNS doesn't know there is more than one server. It queries for www.$FOO.com, and the authority for $FOO.com replies with the IP address of the 'closest' web server.
This result could be pre-calculated by all the web servers pinging the client DNS. It could be done lots of ways, but that is what we are discussing today.
Owen said it worked well for his customers (in a past life), and he has operational experience with this. Can anyone give a serious counter example _from experience_? Or are we just discussing possibilities?
-- TTFN, patrick