On Mon, Sep 12, 2005 at 01:39:14PM +0200, Henk P. Penning wrote:
> On Mon, 12 Sep 2005, Brad Knowles wrote:
> > At 10:16 AM +0200 2005-09-12, Henk P. Penning wrote:
> > points where four or more countries touch or come very close
> > together, and that's just not what happens.
>
> If region A is (networkwise) close to region B, is it true
> that region B is (networkwise) close to region A ?
>
> If that is true (in most cases) the 'A close to B' relation is
> (mostly) symmetric and you have to specify only half the relation:
No.. I can't say that it is true. It happens to often that traffic is
either rerouted via a diffrent transit just to cut down on costs, even
if it does cost a couple of ms. Cause of rerouting, an creating a
A D E B routing could be a ddos, a hickup in a switch or router. It's a
whole diffrent level of problem sovling we are looking into.
But if we would go for this aproach, and take these changes as part of
the game, it would be even possible to have
a => b c e f d => e f
and so forth.
This sounds like a headache with a growing tumor of variables that can
get easly out of control.
> You write
>
> a => b c d
>
> and it implies
>
> b => a
> c => a
> d => a
>
> Ask wrote about specifying the 'A close to B' relation and I made
> a suggestion (use symmetry) for the spec format. That is all.
>
Isn't it true, that for the amount of ntp servers in the Netherlands,
and the amount of users and people with a little experience to set up an
ntp server without the exact knowledge of maintaining one (which should
not be a problem) goes hand in hand with the amount of users?
Correct me if I'm wrong, but I have a feeling that we are looking at
this problem from a perspective that per country the load is equal
ignoring the amount of people that have an internet connection an looking
for an sane ntp server.
If we are, and we feel that we need to give every part of the world that
we can serve an equal good list of good ntp servers, we should not be
looking at this from a national point of view, but more or less from a
boundry less approach.
Tare the European continent apart, and create based uppon two or three
area's closeby (geo).
England, Sweden, Norway, Denmark, Finland, Ireland, Sweden
Netherlands, Spian, France, Belgium, Luxembourg, Portugal, Switserland
Germany, Slovenia, Austria, Poland, Romania, Hungary, Italy
I bet I missed out on a couple of country's.. add them where needed. The
approach is everything but perfect, but gives us a chance to take out
the zones in the dns for every country, but keep them for statistics.
When a country tops 45, a zone can be created to serve for a country.
(for instance) de.pool.ntp.org.
Now.. if we would realy like to create something that belongs to the
best what we can get in time serving there is, we should do it alongside
the pool, provide it as a service for the pool members only to improve
the quality.
,Mark
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