HP Virtual Connect Flex-10 10Gb Ethernet Module for c-Class BladeSystem - Manual (Page 191)

Virtual Connect server profiles 191
To use DHCP when configuring the iSCSI boot configuration, select the Use DHCP to retrieve iSCSI
parameters checkbox.
Selecting this option requires a DHCP server to be set up with iSCSI extensions to provide boot parameters
to servers. The DHCP Vendor ID is offered by the initiator to the DHCP server to retrieve the iSCSI boot
configured data. For more information, see the documentation that ships with the DHCP server and "DHCP
option 43 (on page 193 )."