10–iSCSI Protocol
iSCSI Boot
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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
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 format for the iSCSI
target IQN is the same as that of DHCP option 17, while the iSCSI initiator IQN is
simply the initiator's IQN.
lists the DHCP option 43 suboptions.
<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. A LUN with an ID
OF 64 would have to be configured as 40 within the option 17
parameter on the DHCP server.
<targetname>
The target name in either IQN or EUI format (refer to RFC 3720 for
details on both IQN and EUI formats). An example IQN name would
be “iqn.1995-05.com.QLogic:iscsi-target”.
NOTE
DHCP Option 43 is supported on IPv4 only.
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>"
Table 10-2. DHCP Option 17 Parameter Definition (Continued)
Parameter
Definition
Summary of Contents for 8400 Series
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