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Connecting 2 different domains, same physical location

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rmnwc555

IS-IT--Management
Mar 30, 2009
2
US
We have 2 separate networks, each with a different domain. Each network's domain controllers and servers are in the same physical location. Each network/domain has its own router and public address. If I connect a port on a switch on one of the networks (192.168.10.X) with a port on a switch used on the other network (192.168.150.X), that is behind the router and firewall connections, will the
different networks be able to communicate with each other? (ping, shared folders, etc.) If I set up a trust relationship between my 2 networks, so that they have the
same forest, would my switch to switch connection work then?
 
You'll need a router between the networks so that the two IP subnets can talk to each other. That or change the subnet mask of all the computers from 255.255.255.0 to 255.255.0.0 so that they can talk directly.

For authentication to work between the two you'll need to setup a domain trust between the two Windows domains.

Denny
MVP
MCSA (2003) / MCDBA (SQL 2000)
MCTS (SQL 2005 / SQL 2008 Implementation and Maintenance / Microsoft Windows SharePoint Services 3.0: Configuration / Microsoft Office SharePoint Server 2007: Configuration)
MCITP Database Admin (SQL 2005/2008) / Database Dev (SQL 2005)

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You were right on Denny, thanks. We were able to set this up by changing the 2 domain controllers that we wanted to connect by changing the subnet mask to 255.255.0.0. Then we were able to setup the trusts between them.
 
That will allow the DCs to talk, but the users from each domain won't be able to contact the servers in the other domain without the router or the same subnet change.

Denny
MVP
MCSA (2003) / MCDBA (SQL 2000)
MCTS (SQL 2005 / SQL 2008 Implementation and Maintenance / Microsoft Windows SharePoint Services 3.0: Configuration / Microsoft Office SharePoint Server 2007: Configuration)
MCITP Database Admin (SQL 2005/2008) / Database Dev (SQL 2005)

My Blog
 
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