[aklug] Re: DNS Root Failure?

This might help answer the question:

http://www.root-servers.org/map/

and this talks about your specific question

http://en.wikipedia.org/wiki/Root_nameserver

Mike B.

Quoting Christopher Howard <christopher.howard@frigidcode.com>:

> Okay, humour me a bit, but I'm curious:
>
>> From what I understand, DNS works like so:
> 1. DNS Client communicates requests to recursive DNS server
> 2. Recursive DNS server contacts root DNS server to get authoritative
> list for top-level tld (com, edu, org, etc)
> 3. Recursive DNS server gets list from authoritative server for that
> domain, to get list for subdomain.
> ...
> And so on and so on until an IP address for the host can be returned to
> the client. Though most of these steps can be skipped if the request is
> cached and the TTL has not expired.
>
> Now, lets say the root server in Anchorage, which as far as I know is
> the only one in Alaska, suddenly goes kaput. Are all the other DNS
> servers in Alaska programmed to automatically send their requests to
> another root server out-of-state? Or is the delay while server operator
> figure out what the heck is going on and change this manually? Can the
> clients all continue to operate normally until the TTL expires?
>
> --
> frigidcode.com
> theologa.indicium.us
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Received on Sat Feb 12 23:53:05 2011