In Microsoft Active Directory, the parameters of a subnet name are defined by the subnet's IP address range.
This range is expressed in Classless Inter-Domain Routing (CIDR) notation, which combines the network IP address and the subnet mask.
Here are the steps for defining the parameters of a subnet name:
- Open Active Directory Sites and Services. This can typically be found in the Administrative Tools folder on a domain controller.
- In the console tree, expand the 'Sites' node to reveal the 'Subnets' folder.
- Right-click the 'Subnets' folder, and select 'New Subnet'.
- In the 'New Object - Subnet' dialog box, input the IP address range for the new subnet in the 'Prefix' field, in CIDR notation. This defines the parameters of the subnet name.
For example, if your subnet's IP address range is from 192.168.1.0 to 192.168.1.255, the subnet name would be "192.168.1.0/24". Here, "192.168.1.0" is the network address and "/24" represents the subnet mask in CIDR notation (indicating that the first 24 bits of the IP address are used for network identification, leaving the remaining 8 bits for host addresses within the network).
- In the 'Site Name' field, select the site to which you want to associate the new subnet.
- Click 'OK' to create the subnet.
Remember, the name of the subnet in Active Directory is not an arbitrary label; it directly corresponds to the network parameters of the subnet as defined by its IP address range. Proper planning of your subnet configuration is critical to achieving an effective and efficient network infrastructure.
- Why must a subnet have a name?
- What are its components?
Windows uses IP subnets as the basis for creating Active Directory sites, and each subnet must have a unique identifier (the subnet name) to differentiate it from other subnets.
The subnet name is expressed in Classless InterDomain Routing
(CIDR) format, with the network number followed by a slash and the number of bits to be used for the network ID. NT administrators who are familiar with TCP/IP subnetting will recognize this subnetting method.