Plan a naming scheme for the systems that will comprise the network. Each machine on the network should have a TCP/IP host name that corresponds to the IP address on its primary network interface. The host name must be unique within the system's sub-domain. Just like physical machines, virtual systems should also have a unique IP address and host name.
A system can have the following:
Multiple host names that map to the system's IP address. For example, systema.mycompany.com can also be known as www.mycompany.com.
The same host name for both IPv4 and an IPv6 addresses.
A new IP address and an old deprecated IP address that are configured with the same host name for a period of time to support network renumbering.
Multiple network interfaces on different subnets, each with a unique IP address and host name.
When planning your network, make a list of IP addresses and their associated host names for easy access during the setup process. The list can help you verify that all host names are unique.