Log in to the CloudStack UI as an administrator or end user.
In the left navigation, choose Network.
Click Add guest network. Provide the following information:
Name: The name of the network. This will be user-visible.
Display Text: The description of the network. This will be user-visible.
Zone. The name of the zone this network applies to. Each zone is a broadcast domain, and therefore each zone has a different IP range for the guest network. The administrator must configure the IP range for each zone.
Network offering: If the administrator has configured multiple network offerings, select the one you want to use for this network.
Guest Gateway: The gateway that the guests should use.
Guest Netmask: The netmask in use on the subnet the guests will use.