Re: Logon to a Site vs Subnet

Yes Jorge,

the choice of what DC-Subnet to connect is made by the first DNS lookup
query. "The client sends a DNS Lookup query to DNS to find domain
controllers, preferably in the client's own subnet"

Here, for example, I've clients connected on DC that does not macht its own
subnet(all within the same site). Probably it happens because quick response
of each domain controllers on the site, isn't?

Thanks,
Ciro

"Jorge Silva" wrote:

Net Logon search the the subnet object that most closely matches the client
IP address.
This is explained in the link that I provided you, did you read it?

--
*************************************************
I hope that the information above helps you
Good Luck

Jorge Silva

MCSA + Exchange + MSCE
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"CQS" <CQS@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:A69F8A3B-B270-4AC1-AF55-4ACE0ED899DF@xxxxxxxxxxxxxxxx
Imagine the client machine is located in a site that have more than one
subnet, each subnet have a domain controller. In a process of logon where
the
client machine will authenticate.

I've read a lot about the closest site but I did not found anyone talking
about the "closest subnet".

May the client machine logs on the DC that is not on the subnet itself?
(disconsider the link performance between the subnets)

Ciro

"Jorge Silva" wrote:

Hi
Inline
the subnet information is important to a machine in a process of logon
or
just the site name? May a machine logs on to domain controllers in a
different subnet?
Both are important.
The machine query the local DNS to determine the closest DC available to
process logon. After the client locates a domain controller, the client
establishes communication by using Lightweight Directory Access Protocol
(LDAP) to gain access to Active Directory. As part of that negotiation,
the
domain controller identifies which site the client is in, based on the IP
subnet of that client. If the client is communicating with a domain
controller that is not in the closest (most optimal) site, the domain
controller returns the name of the client's site.
More detail here
http://support.microsoft.com/kb/314861

What happen when there are many subnets in the same site
and a DC in which subnet?
DNS will return the available DCs in the Site with the same subnet where
machines are located.

--
*************************************************
I hope that the information above helps you
Good Luck

Jorge Silva

MCSA + Exchange + MSCE
*************************************************

"CQS" <CQS@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:4204CC57-9DFA-410A-BF02-4C238479C765@xxxxxxxxxxxxxxxx
Hi All,

the subnet information is important to a machine in a process of logon
or
just the site name? May a machine logs on to domain controllers in a
different subnet? What happen when there are many subnets in the same
site
and a DC in which subnet?

Thank's,

Ciro




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