DNS ROOT understanding

Lars-Johan Liman liman at autonomica.se
Tue Sep 28 09:53:28 UTC 2004


nlienard at fr.colt.net:
> Thanks for your quick answear.

> If i understand, that means if there is a root server not reacheable, his
> RTT will increase and will be less solicited

> Is there a good way to monitore the life about Root Server ? (ping ? dig ?
> other ?)
> in order to be warn when there is a problem.

Your BIND will take care of it for you, and eliminate the ones that
are not working from being queried, and you really don't need to know,
until a majority of them are unreachable (like 10 of 13). With the
anycast system that is utilized by many root-ops today, that's
extremely unlikely.

The root servers are *CLOSELY* monitored by a large group already,
the operators themselves obviously included.

What we don't need is the extra load of each and every host on the net
pinging us to se if we're still there. We are. I promise. And if we're
not, we already know, and the torch is in our butts already.
There will be precious little you can do about it.

What you might want to do, is to keep an eye on your own
connectivity, but pinging the root name servers is not the right way
to do that. So, please, don't.

				Cheers,
				  /Liman
                                   hostmaster for i.root-servers.net
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