Dell Emulex Family of Adapters - Manual (Page 971)

Emulex Drivers Version 10.2 for Linux User Manual P010081-01A Rev. A
Appendix B. Configuring iSCSI Through DHCP
DHCP Option 43 (Vendor-Specific Information)
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DHCP Option 43 Format
The following is the format of DHCP option 43 and its guidelines for creating the data
string:
‘iscsi:’<TargetIP>’:’<TargetTCPPort>’:’<LUN>’:’<TargetName>’:’<Init
iatorName>’:’<HeaderDigest>’:’<DataDigest>’:’ <AuthenticationType>

Strings shown in quotes are part of the syntax and are mandatory.

Fields enclosed in angular brackets (including the angular brackets) should be
replaced with their corresponding values. Some of these fields are optional and
may be skipped.

If an optional field is skipped, a colon must be used as a placeholder to indicate
the default value for that field.

When specified, the value of each parameter should be enclosed in double
quotes.

All options are case sensitive.
Default Initiator Name and Data Digest Settings Example
The following is an example of default initiator name and data digest settings.
iscsi:”192.168.0.2”:”3261”:”000000000000000E”:”iqn.2009-4.com:12345
67890”::”E”::”E”
In this example, the field values are:

TargetIP: 192.168.0.2

TargetTCPPort: 3261

LUN: 0x0E

TargetName: iqn.2009-04.com:1234567890
<DataDigest> Replace with either “E” or “D”.
• “E” denotes that the data digest is enabled.
• “D” denotes that the data digest is disabled.
If a value is not provided, it is assumed that the Data Digest is
disabled by default. Optional
<AuthenticationType> If applicable, replace with “D”, “E”, or “M”.
• “D” denotes that authentication is disabled.
• “E” denotes that one-way CHAP is enabled (the username and
secret to be used for one way CHAP must be specified by
non-DHCP means).
• “M” denotes that mutual CHAP is enabled (user name and
passwords required for mutual CHAP authentication must be
specified by non-DHCP means).
If a value is not specified, this field defaults to authentication
disabled.
Optional
Table B-1 DHCP Option 43 (Vendor-Specific Information) (Continued)
Parameter Description Field Type