9–Configuring iSCSI Protocol
iSCSI Boot
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lists the DHCP option 43 suboptions.
Using DHCP option 43 requires more configuration than DHCP option 17, but it
provides a richer environment and provides more configuration options. Cavium
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 several options, including stateless or stateful IP
configuration, as well as information to the DHCPv6 client. For iSCSI boot,
Cavium adapters support the following DHCP configurations:
DHCPv6 Option 16, Vendor Class Option
DHCPv6 Option 17, Vendor-specific Information
Table 9-3. DHCP Option 43 Suboption Definition
Suboption
Definition
201
First iSCSI target information in the standard root path format
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":
"<targetname>"
202
Second iSCSI target information in the standard root path format
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":
"<targetname>"
203
iSCSI initiator IQN
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
General Parameters
of the iSCSI Boot
Configuration menu.
NOTE
The DHCPv6 standard Root Path option is not yet available. Cavium
suggests using Option 16 or Option 17 for dynamic iSCSI boot IPv6 support.