Users Guide

10–iSCSI Protocol
iSCSI Boot
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Table 10-3 lists the suboption.
Using DHCP option 43 requires more configuration than DHCP option 17, but it
provides a richer environment and provides more configuration options. QLogic
recommends that customers use DHCP option 43 when performing dynamic
iSCSI boot configuration.
Configuring the DHCP Server
Configure the DHCP server to support option 17 or option 43.
DHCP iSCSI Boot Configuration for IPv6
The DHCPv6 server can provide a quantity of options, including stateless or
stateful IP configuration, as well s information to the DHCPv6 client. For iSCSI
boot, QLogic adapters support the following DHCP configurations:
 DHCPv6 Option 16, Vendor Class Option
 DHCPv6 Option 17, Vendor-Specific Information
DHCPv6 Option 16, Vendor Class Option
DHCPv6 Option 16 (vendor class option) must be present and must contain a
string that matches your configured DHCP Vendor ID parameter. The DHCP
Vendor ID value is QLGC ISAN, as shown in General Parameters of the iSCSI
Boot Configuration menu.
Table 10-3. DHCP Option 43 Suboption Definition
Suboption Definition
201 First iSCSI target information in the standard root path format
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":
"<targetname>"
NOTE
If using Option 43, you also need to configure Option 60. The value of
Option 60 should match the DHCP Vendor ID value. The DHCP Vendor ID
value is QLGC ISAN, as shown in the General Parameters section of the
iSCSI Boot Configuration menu.
NOTE
The DHCPv6 standard Root Path option is not yet available. QLogic
suggests using Option 16 or Option 17 for dynamic iSCSI Boot IPv6 support.