9–Configuring iSCSI Protocol
iSCSI Boot
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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.
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.
lists the DHCP option 17 suboptions.
The content of option 17 should be:
<2-byte Option Number 201|202|203> <2-byte length> <data>
Configuring the DHCP Server
Configure the DHCP server to support Option 16 and Option 17.
Table 9-4. DHCP Option 17 Suboption Definition
Suboption
Definition
201
First iSCSI target information in the standard root path format
"iscsi:"[<servername>]":"<protocol>":"<port>":"<LUN>
":"<targetname>"
202
Second iSCSI target information in the standard root path format
"iscsi:"[<servername>]":"<protocol>":"<port>":"<LUN>
":"<targetname>"
203
iSCSI initiator IQN
NOTE
In
, the brackets
[ ]
are required for the IPv6 addresses.
NOTE
The format of DHCPv6 Option 16 and Option 17 are fully defined in
RFC 3315.