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cmaohioFlag for United States of America

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Active Directory Subnets

We have several vlans setup and several subnets. here are a few:

10.0.0.0/24
10.0.2.0/23
10.0.15.0/23

and so on (there are about 10)

However, in my "Subnets" section of Active Directory Sites and Services I have this subnet: 10.25.1.0/24  and I have never had this subnet on the network before ever.

Should I be adding all my individual subnets to the folder and delete the 10.25.1.0 one?

I have never seen this be a problem on my network.
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Okay, so I have a follow up question. if you want me to stick to one topic, that is okay.

We're planning on setting up a read only AD server at our secondary location. The location is connected back to the main site via a VPN.  I was planning on putting it into the domain along with the other DC's. Should I be creating a new "Site" within AD Sites and Services and then add the offsite subnet to that?
Yes, presuming the secondary location has a different VLAN than the primary site.
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ASKER

Technically there are no vlans defined in the secondary site but it has a different subnet altogether.
Yes, you should create a new Site for the Secondary location and add the subnet you will be using at the new site. read the  blog from my first post, it will explain the use of subnet definitions, and the potential issues you will avoid by using subnet definitions.