iSCSI Protocol: Broadcom NetXtreme II® Network Adapter User Guide
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option 17, while the iSCSI initiator IQN is simply the initiator's IQN.
NOTE: DHCP Option 43 is supported on IPv4 only.
The suboptions are listed below.
Table 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>"
203
iSCSI initiator IQN
Using DHCP option 43 requires more configuration than DHCP option 17, but it provides a richer environment and provides
more configuration options. Broadcom 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.
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 BRCM ISAN, as shown in
General Parameters
of the iSCSI Boot Configuration
menu.
DHCP iSCSI Boot Configuration for IPv6
The DHCPv6 server can provide a number of options, including stateless or stateful IP configuration, as well s information to
the DHCPv6 client. For iSCSI boot, Broadcom adapters support the following DHCP configurations:
DHCPv6 Option 16, Vendor Class Option
DHCPv6 Option 17, Vendor-Specific Information
NOTE: The DHCPv6 standard Root Path option is not yet available. Broadcom suggests using Option 16 or Option 17
for dynamic iSCSI Boot IPv6 support.
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 BRCM ISAN, as shown in
General Parameters
of the iSCSI Boot
Configuration menu.
The content of Option 16 should be <2-byte length> <DHCP Vendor ID>.
DHCPv6 Option 17, Vendor-Specific Information
DHCPv6 Option 17 (vendor-specific information) provides more configuration options to the iSCSI client. In this configuration,
three additional suboptions 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 suboptions are listed below.
Table 4: DHCP Option 17 Suboption Definition
Suboption Definition
201
First iSCSI target information in the standard root path format
"iscsi:"[<servername>]":"<protocol>":"<port>":"<LUN>":"<targetname>"
203
iSCSI initiator IQN
NOTE: In
Table 4
, the brackets [ ] are required for the IPv6 addresses.
The content of option 17 should be <2-byte Option Number 201|202|203> <2-byte length> <data>.
Configuring the DHCP Server
