Hard Pxe is a PXE stored in the ROM of a network card.
Real PXE is implemented by 3COM for their network cards. The following figure shows how it works. It requires a DHCP server, a PXE server and a TFTP server.
This figure shows a Real Boot PXE sequence using PxeLinux. See Chapter 6 for more details.
Figure 2.1. How does Real PXE works ?
TCP/IP PXE is implemented by intel for their network cards. The following figure shows how it works. It requires a DHCP server and a TFTP server.
This figure shows a Real Boot PXE sequence using PxeLinux. See Chapter 6 for more details.
Figure 2.2. How does TCP/IP PXE works ?
Soft Pxe is a PXE stored in a software ROM and loaded by a program emulating a hard PXE ROM.