New Site in AD 2003

jeffsteffy
jeffsteffy used Ask the Experts™
on
I will be adding a new site in AD 2003, i have a main office and remote office so if users log into main site they auth with main domina controller or the same for remote office.
i am looking for info/articles on how to add new site in AD, the entire process replication... not just right click add site...
is there problems with to DC's at different site/location replicating?
If domain controller at main site goes down can users still use DC at remote site to login to XP?
I want to make sure i have all info so this gets completed correctly.
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tigermattSite Reliability Engineer
Most Valuable Expert 2011
Commented:

The thing is, the process is incredibly simple - you make your new site, give it a good name, and then (the crucial part) you assign the remote site's IP subnet to the site object. It takes less than 5 minutes to complete - subject to having all the information to hand. I think you may also get a default replication configuration which is suitable in most cases - so you needn't worry too much about that at this stage.

Once you have the new site object created you'd need to move all the DCs which will be / are in the new site into that site's 'Servers' container.

Then, when a user in a site authenticates, it will use its local DC preferentially, and will only cross the VPN link if that DC is unavailable, for whatever reason.

> If domain controller at main site goes down can users still use DC at remote site to login to XP?

In answer to this, they can, but you need to consider things like DHCP. If the server at the remote site goes down, what will supply the PCs with DHCP addresses? To get around this, you'd use an IP helper on the remote site's router back to the main DHCP server in the HQ. This means DHCP addresses can be leased from a DHCP scope at HQ, if the remote site's DC is down for whatever reason.

Users can also log in using cached credentials, but without DHCP, they will have no network access whatsoever.

-Matt
Top Expert 2013

Commented:
The first thing you will do is create a new site in active directory sites and services
Once the new site is created you will add the subnets for your remote office in the subnet folder.
You will associate the subnet (s) with the remote site.
So now you have a site and associted subnets
You will next want to create a site link between the main office and remote site
To to the Inter-site Transports folder then to the IP folder and right click and select new site link
Call it something like "Main Office to Remote"
Then you can move the Remote DC into the new site.
Yes if the main site goes down users can still log in to the remote site
http://support.microsoft.com/kb/314861 
How Domain Controllers Are Located in Windows XP
You will also want to make the DC at the remote site a Global Catalog
 
Thanks
Mike

Author

Commented:
How do i do this?
You will next want to create a site link between the main office and remote site

To to the Inter-site Transports folder then to the IP folder and right click and select new site link

Call it something like "Main Office to Remote

is this the site to site VPN i have?
Top Expert 2013
Commented:
No this will be a way in AD sites and services for the sites to connect and replicate.
One you create the sites then in the site link procedure you add these two sites (see screenshot)
Thanks
Mike
 

Site-Link-Main-to-Remote.jpg

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