How to Add a Subnet to a Network

If you are changing from a network that does not use subnets to one that is subnetted, perform the following steps:

1. Decide on the new subnet topology, including considerations for routers and locations of hosts on the subnets.

2. Assign all subnet and host addresses.

3. Modify the /etc/inet/netmasks file, if you are manually configuring TCP/IP, or supply the netmask to the Solaris installation program.

4. Modify the /etc/inet/hosts files on all hosts to reflect the new host addresses.

5. Reboot all machines.