Help... DNS Structuring Question!

[Amir]

Hi Matt.
Thanks for the answer.
stubs will solve that, no doubt. but the problem is that what if the
situation was like this :
my company has 25 branches all over the world.
i've subdevided each country into a sub-domain.

                                                  X.com
                                                /     |      \
		italy.x.com	israel.x.com	usa.x.com
and so on ...
the problem is : those sites need to have delegated zones... those ARE
autonomous units.
but then the question arises : every time when a host on usa.x.com wants to
resolve a host on italy.x.com it needs to
go all the way to "." then ".com" then "x.com" and then "italy.x.com" ? im
looking for a way to have all these name servers
have actually two courses of action :
if the hostname being resolved is not on the company's nets , begin as usual
at root.
but when the hostname is in the other domain of the same company , i want
the NS's to "know" the NS record of x.com ,
just like the know the NS's for "." ...
it seems really really needed. it must be an option that can be set
somehow...
dont the big ISP's in the world have NS's of the ".com" domain already for
example ? to relieve "." ?
thanks a lot for reading on , and replying in the first place :)
bye for now ,
amir


-----Original Message-----
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On Behalf
Of Larson, Matt
Sent: Thursday, June 29, 2000 6:14 PM
To: 'amir'; bind-users at isc.org
Subject: RE: Help... DNS Structuring Question!



Hi, Amir.

> If I have delegated the sub-domains x.a.com and y.a.com to
> poeple , and
> yet I want queries between
> them not to have to go all the way to root , then to .com
> then to a.com
> and then to the other domain,
> but only go up to a.com , and he will refer them downwards

You can make all your x.a.com and y.a.com name servers a stub for the a.com
zone.  That will accomplish what you tried to do by putting NS records in
your hints (cache) file: it'll give those name servers a copy of the a.com
NS records.  Alternately, you could make all the x.a.com name servers a stub
for y.a.com and all the y.a.com name servers a stub for x.a.com.  That way,
they can find each other without contacting an a.com name server at all.

Stub is described in http://www.isc.org/products/BIND/docs/config/zone.html.

Matt
--
Matt Larson <mlarson at netsol.com>
Network Solutions Registry / www.nsiregistry.com