For a detailed description of the boot syntax and valid boot arguments, see Arguments Supported by Network Boot.
Network booting examples:
Using RARP (the default) and booting from the device that is specified for the net parameter.
{0} ok boot net
Using RARP (the default) and specifying a specific device-specifier:
{0} ok boot /pci@300/pci@1/network@0
Using DHCP:and booting from the device specified for the net parameter.:
{0} ok boot net:dhcp
Using DHCP:and specifying a specific device-specifier:
{0} ok boot /pci@300/pci@1/network@0:dhcp