Configuring Dhcp Iscsi Boot For Ipv4; Dhcp Option 17, Root Path; Dhcp Option 43 (Adding Vendor Options) - Dell QLogic Family of Adapters User Manual

Configuring iSCSI DHCP Boot Options: QLogic QME8242 Mezzanine Card User's Guide
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Configuring iSCSI DHCP Boot Options: QLogic QME8242
Mezzanine Card User's Guide
To configure the DHCP server to support iSCSI boot, first ensure that your DHCP server is set up, and then refer to the
following procedure.
NOTE: This release does not support DHCP iSCSI boot for IPv6. Refer to future Readme and Release Notes for IPv6
support notification.

Configuring DHCP iSCSI Boot for IPv4

NOTE: Although this section describes how to configure a Windows 2003 or Windows 2008 DHCP server and QLogic
adapter to allow DHCP to work, additional steps are required. For example, you must also configure the IP addresses of
the Ethernet interfaces on the DHCP server, configure the iSCSI storage box, and configure the network. These
configuration steps are outside the scope of this guide.
To configure the QLogic adapter to obtain all of its IP and iSCSI initiator and target settings from the DHCP
server:
1. Ensure that the latest BIOS and firmware are installed.
2. Reboot the server, and when the QLogic iSCSI BIOS screen appears, press <Ctrl+Q> to enter the adapter BIOS utility,
Fast!UTIL.
3. On the initial Select Host Adapter screen, select the adapter ports you want to configure for SAN boot. This will be the
same MAC addresses for which you created reservations on the DHCP server.
4. Press the <Enter> key.
If both ports are to be configured, perform the following steps for the first port, complete its configuration, and then
repeat the steps for the second port.
5. On the Fast!Util Options screen, select Configuration Settings, and then press the <Enter> key.
6. On the Configuration Settings screen, select iSCSI Boot Settings, and then press <Enter>.
7. On the iSCSI Boot Settings screen, select Adapter Boot Mode, and then press <Enter>.
8. When presented with the various Boot Modes, select DHCP using VendorID, and then press <Enter>.
9. Select the DHCP Boot Settings, and then press <Enter>.
10. On the DHCP Boot Settings screen, select Vendor ID, and then press <Enter>.
11. Enter the Vendor ID (class) that you defined earlier in the DHCP server configuration steps, and then press <Enter>.
Note that the vendor ID name is case-sensitive. For this example, use QLOGIC_ISAN because it matches what was
configured previously.
12. Press the <Esc> key until the Configuration Settings Modified screen is displayed.
13. Select Save changes, and then press <Enter>.
14. If all components are configured correctly, you can either:
Reinitialize the adapter from the BIOS.
Reboot the server.
The adapter should now be able to obtain all of its IP and initiator and target information from the DHCP server.

DHCP Option 17, Root Path

DHCP option 17 specifies the path name that contains the client's root disk. The path is formatted as a character string
consisting of characters from the network virtual terminal (NVT) ASCII character set. The data is formatted as a string using
the DHCP Root Path Option (Option 17):
"iscsi:"<servername | serveripaddress>":"<protocol>":"<port>":"<LUN>":"<targetname>"

DHCP Option 43 (Adding Vendor Options)

Define a vendor class called "QLogic" as part of the "Default User Class," and then add the iSCSI specific information. Two of
these options—201 and 202—contain iSCSI boot target information for primary and secondary targets, respectively. BIOS
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