HP FlexFabric 10Gb 2-port 534FLR-SFP Adapter - Manual (Page 11)

Setup 11
• DHCP option 43, vendor-specific information (on page 11 )
DHCP option 17, root path
Option 17 is used to pass the iSCSI target information to the iSCSI client.
The format of the root path as defined in IETC RFC 4173 is
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":"<targetname>".
Parameter Definition
"iscsi" A literal string
<servername> The IP address or FQDN of the iSCSI target
":"
Separator
<protocol> The IP protocol used to access the iSCSI target
Currently, only TCP is supported so the protocol is 6.
<port>
The port number associated with the protocol
The standard port number for iSCSI is 3260.
<LUN> The Logical Unit Number to use on the iSCSI target
The value of the LUN must be represented in hexadecimal format. Configure a LUN
with an ID of 64 as 40 within the option 17 parameter on the DHCP server.
<targetname> The target name in either IQN or EUI format. See the RFC 3720 for details on both IQN
and EUI formats.
An example IQN name is iqn.1995-05.com.broadcom:iscsi-target.
DHCP option 43, vendor-specific information
DHCP option 43 (vendor-specific information) provides more configuration options to the iSCSI client than
DHCP option 17. In this configuration, three additional sub-options are provided that assign the initiator IQN
to the iSCSI boot client along with two iSCSI target IQNs that can be used for booting. The format for the
iSCSI target IQN is the same as that of DHCP option 17, while the iSCSI initiator IQN is simply the initiator
IQN.
DHCP option 43 is supported on IPv4 only.
The sub-options are listed in DHCP option 43 sub-option definitions.
Using DHCP option 43 requires more configuration than DHCP option 17, but it provides more configuration
options suitable for a dynamic iSCSI boot configuration.
Sub-option Definition
201 First iSCSI target information in the standard root path format:
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":"<targetname>"
202 Second iSCSI target information in the standard root path format:
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":"<targetname>"
203
iSCSI initiator IQN
Configuring the DHCP server
Configure the DHCP server to support option 17 or option 43.
For option 43, also configure option 60. Match the value of option 60 to the DHCP Vendor ID value. The
DHCP Vendor ID value is BRCM ISAN, as shown in General Parameters of the iSCSI Boot Configuration
menu.