Subnets are networking containers that enable you to sub-divide your network into smaller, logical IP networks.

On a cluster, subnets are created under a groupnet and each subnet contains one or more IP address pools. Both IPv4 and IPv6 addresses are supported on OneFS; however, a subnet cannot contain a combination of both. When you create a subnet, you specify whether it supports IPv4 or IPv6 addresses.

You can configure the following options when you create a subnet:

How you set up your external network subnets depends on your network topology. For example, in a basic network topology where all client-node communication occurs through direct connections, only a single external subnet is required. In another example, if you want clients to connect through both IPv4 and IPv6 addresses, you must configure multiple subnets.