If you use a DHCP server on your network, you can configure the DHCP server to supply the following information.
Proxy server's IP address
Location of the wanboot-cgi program
Specifies the URL of the wanboot-cgi program on the WAN boot server
For information about setting these vendor options on a Solaris DHCP server, see Preconfiguring System Configuration Information With the DHCP Service (Tasks).
For detailed information about setting up a Solaris DHCP server, see Chapter 16, Configuring the DHCP Service (Tasks), in System Administration Guide: IP Services.
To continue with your WAN boot installation, see Chapter 12, SPARC: Installing With WAN Boot (Tasks).