Apple Mac Performa 640 series - Manual (Page 166)

m If you are on a network with a subnet mask, you need the IP address for
that mask; for example:
m 255.0.0.0 for client Class A IP addresses (those between 0.0.0.1 and
127.255.255.254)
m 255.255.0.0 for client Class B IP addresses (those between 128.0.0.1 and
191.255.255.254)
m 255.255.255.0 for client Class C IP addresses (those between 192.0.0.1 and
223.255.255.254)
m If you will connect to a TCP/IP host through a router, you need to know
the IP address for that router.
m The name of your domain name server (for example, server.edu).
m The IP address of your domain name server.
Once you have this information, you can proceed with the installation by
following Novell’s instructions and responding to the on-screen prompts.
158 Appendix D