Dell Broadcom NetXtreme Family of Adapters - Manual (Page 25)

iSCSI Protocol: Broadcom NetXtreme BCM57XX User Guide
file:///C|/Users/Nalina_N_S/Documents/NetXtreme/English/iscsi.htm[9/5/2014 3:32:08 PM]
5. 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)
6. Select ESC to return to the Main menu.
7. 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:"":"":"":"":""
The parameters are defined below.
Table 2: DHCP Option 17 Parameter Definition
Parameter Definition
"iscsi:"
A literal string
The IP address or FQDN of the iSCSI target
":"
Separator
The IP protocol used to access the iSCSI target. Currently, only TCP is supported so the protocol is 6.
The port number associated with the protocol. The standard port number for iSCSI is 3260.
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.
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".
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.
NOTE: DHCP Option 43 is supported on IPv4 only.
The suboptions are listed below.
Table 3: DHCP Option 43 Suboption Definition
Suboption Definition