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User Guide NetXtreme II
January 2010
Broadcom Corporation
Document ENGSRVT52-CDUM100-R iSCSI Boot Page 83
5. Select ESC to return to the Main menu.
6. From the Main menu, select 1st Target Parameters.
7. From the 1st Target Parameters screen, type values for the following using the values used when configuring the iSCSI
target:
• CHAP ID (optional if two-way CHAP)
• CHAP Secret (optional if two-way CHAP, and must be 12 characters in length or longer)
8. Select ESC to return to the Main menu.
9. Select ESC and select Exit and Save Configuration.
Configuring the DHCP Server to Support iSCSI Boot
The DHCP server is an optional component and it is only necessary if you will be doing a dynamic iSCSI Boot configuration
setup (see Dynamic iSCSI Boot Configuration).
Configuring the DHCP server to support iSCSI boot is different for IPv4 and IPv6.
• DHCP iSCSI Boot Configurations for IPv4
• DHCP iSCSI Boot Configuration for IPv6
DHCP iSCSI Boot Configurations for IPv4
The DHCP protocol includes a number of options that provide configuration information to the DHCP client. For iSCSI boot,
Broadcom adapters support the following DHCP configurations:
• DHCP Option 17, Root Path
• DHCP Option 43, Vendor-Specific Information
DHCP Option 17, Root Path
Option 17 is used to pass the iSCSI target information to the iSCSI client.
The format of the root path as defined in IETC RFC 4173 is:
"iscsi:"<servername>":"<protocol>":"<port>":"<LUN>":"<targetname>"
The parameters are defined below.
Table 2: DHCP Option 17 Parameter Definition
Parameter Definition
"iscsi:" A literal string
<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.broadcom:iscsi-target".