Before getting into creating sites, we need to look at a few of the requirements for sites to function as designed.
Because a site is an area of well-connected computers within a subnet and also is a collection of subnets, subnets are a requirement. By default, Active Directory does not have a subnet defined. It is up to you, the administrator, to define each subnet on your network.
An IP subnet is a numeric range of addresses usually associated with a physical LAN segment. The IP specification provides for Class A addresses with more than 16 million addresses in one network, Class B addresses with 65,536 addresses in one network, and Class C addresses with 254 addresses in one network. These ranges frequently do not ...