Let me finess this a little.

If you only have a single site in your forest, all clients, regardless of
whether they have a subnet defined for them or not will resolve to being
part of that one site. As soon as you have two sites, any clients that are
in an undefined subnet will use any site and will not believe themselves to
be part of any site. 

It basically all works out to be the same thing, client using any DC in the
domain. However if someone is looking at what is actually happening under
the covers with the API calls they will see what I am describing. Basically
a client in an undefined subnet in an AD with one site will say its site is
that one site, a client in an undefined subnet in an AD with more than one
site will say it isn't in any site - i.e. "" for site.

  joe
 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Phil Renouf
Sent: Thursday, April 14, 2005 12:17 PM
To: [email protected]
Subject: Re: [ActiveDir] How to determine which is the default site

I won't take credit for this answer, I saw this question answered somewhere
else today.

There is nothing special about the Default First Site, it is only created
because there needs to be at least one site to put the first DC into. It
does not have any relevance when a client is trying to locate a DC and the
clients subnet is not defined in any sites. If the clients subnet is not in
any sites then the client will query a DC from ANY site.

That assumes of course that you have more than one subnet defined in more
than one site, and I won't get into whether it is recommended to delete the
site or not as I don't know what the official word is.

Phil

On 4/14/05, Ruston, Neil <[EMAIL PROTECTED]> wrote:
> Testing back in 2000 (the year, not the OS) showed that this site did 
> have special properties. I'm researching and testing before I post further
info.
> 
> I believe it has relevance when a client tries to locate a DC and the 
> client's subnet has no site-subnet mapping defined in AD.
> 
> More to follow...
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