How to segregate a test SCCM system in a separate Forest but same LAN

Hello, I have created a SCCM 2007 environment for testing. The SCCM server is in a separate Windows 2003 Active Directory Forest, but is located on the same LAN as the production AD. There is no Trusting between these forests. How do I segregate this test environment so that I do not risk contaminating the production environment?
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Adam BrownSenior Systems AdminCommented:
By default, separate forests won't talk to one another, so there isn't much likelihood of the test forest "contaminating" the production one. That said, the computers on each forest will be unable to talk to one another if they are on a different masked subnet. For instance, if the production network is 10.10.x.x with a subnet mask of, setting the test network to 10.11.x.x with the same subnet mask will effectively prevent the networks from being able to communicate.

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Adam BrownSenior Systems AdminCommented:
Oh, I should mention that unless those networks are on separate VLANs, there is nothing you can really do to block broadcast traffic from going between networks.
cbensonICSAuthor Commented:
Hello acbrown2010, Thank you for the information. I will be testing your suggestions and then let you know the results. Thanks
cbensonICSAuthor Commented:
Thank you for your assistance. We created a new vlan and used a different masked subnet for the test network.
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