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6–Configuring NIC Functionality in the Converged Network Adapter
Configuring the NIC in a Windows Environment
6-28 FE0254601-00 A
Figure 6-22. PXE Operation
1. As the server boots up, the QLogic adapter PXE boot code starts from the
adapter Flash memory. This boot code is part of the multi-boot image that is
resident on the QLogic adapter.
2. The PXE boot code broadcasts a DHCPDISCOVER message.
3. In the boot server or a separate entity, the DHCP server then responds by
sending a DHCPOFFER message with an IP address for use by the QLogic
adapter during the PXE boot process. The DHCP OFFER message also
contains the boot-server list.
4. PXE boot code acknowledges the DHCPOFFER message and waits for an
acknowledgement from the DHCP server.
5. The PXE boot code selects a boot server and proceeds to imitate the boot
server with its IP address and system architecture details.
6. The boot server responds to the PXE boot code with the boot file name (an
executable file corresponding to the server architecture) and trivial file
transfer protocol (TFTP) configuration settings required by the PXE boot
code to download the executable boot file.
7. The PXE boot code downloads the executable boot file using TFTP and
executes the boot file.