Any system can boot from the network, if a boot server is available. You might need to boot a stand-alone system from the network for recovery purposes, if the system cannot boot from the local disk.
To perform a network boot of a SPARC based system to install Oracle Solaris for recovery purposes, a DHCP server is required.
The DHCP server supplies the information that the boot client needs to configure its network interface. If you are setting up an Automated Installer (AI) server, that server can also be the DHCP server. Or, you can set up a separate DHCP server. For more information, see Working With DHCP in Oracle Solaris 11.3.
A boot server that provides tftp service is also required.