You can create a subnet by using System Manager to provide a logical subdivision of an IP network to pre-allocate the IP addresses. A subnet enables you to create interfaces more easily by specifying a subnet instead of an IP address and network mask values for each new interface.
You must have created the broadcast domain on which the subnet is used.
If you specify a gateway when creating a subnet, a default route to the gateway is added automatically to the SVM when a LIF is created using that subnet.
Click the Network tab.
In the Subnets tab, click Create.
In the Create Subnet dialog box, specify subnet details, such as the name, subnet IP address or subnet mask, range of IP addresses, gateway address, and broadcast domain.
You can specify the IP addresses as a range, as comma-separated multiple addresses, or as a mix of both.