[dns-operations] The (very) uneven distribution of DNS root servers on the Internet
todd at borked.ca
Tue May 15 16:06:13 UTC 2012
On Tue, May 15, 2012 at 5:30 AM, Patrik Fältström <paf at frobbit.se> wrote:
> On 15 maj 2012, at 11:14, Stephane Bortzmeyer wrote:
> > Asking for fairness and equity (for IP addresses or
> > root name servers) seem reasonable to me.
> The devil is in the details. Network elements should on the Internet be
> distributed according to network topology. .
I think this is the correct approach. But I don't think it should be up to
the root server operators to figure this out - they put root servers out
there in reasonable network locations around the world. ISPs, if they care
sufficiently, should be working to build their network in a manner that
reduces the hops to get to one of the root nodes.
I think a much better metric, but one that would be impossibly difficult to
pin down or get data for, would be looking at the average number of hops
between ISPs caching servers and their closest root server.
Another roughly similar approach would be to look at the geographic
location of the root namesevers and correlate that with the population
density for the associated region. One could logically assume that if a
caching server is within a certain radius of a node geographically, they
are likely able to route to it (country boundaries/geography may change
this, but I did say roughly). That data is likely much more available, and
may show that the root nameserver/population ratio isn't so bad, or may
show where enhancement is required.
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