Dhcp Iscsi Boot Configuration For Ipv6 - Dell Broadcom NetXtreme Family of Adapters User Manual

DHCP iSCSI Boot Configuration for IPv6

The DHCPv6 server can provide a number of options, including stateless or stateful IP configuration, as well s information to
the DHCPv6 client. For iSCSI boot, Broadcom adapters support the following DHCP configurations:
DHCPv6 Option 16, Vendor Class Option
DHCPv6 Option 17, Vendor-Specific Information
NOTE: The DHCPv6 standard Root Path option is not yet available. Broadcom suggests using Option 16 or Option 17
for dynamic iSCSI Boot IPv6 support.
DHCPv6 Option 16, Vendor Class Option
DHCPv6 Option 16 (vendor class option) must be present and must contain a string that matches your configured DHCP
Vendor ID parameter. The DHCP Vendor ID value is BRCM ISAN, as shown in General Parameters of the iSCSI Boot
Configuration menu.
The content of Option 16 should be <2-byte length> <DHCP Vendor ID>.
DHCPv6 Option 17, Vendor-Specific Information
DHCPv6 Option 17 (vendor-specific information) provides more configuration options to the iSCSI client. 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 suboptions are listed below.
Table 4: DHCP Option 17 Suboption Definition
Suboption Definition
First iSCSI target information in the standard root path format
201
"iscsi:"[<servername>]":"<protocol>":"<port>":"<LUN>":"<targetname>"
203 iSCSI initiator IQN
NOTE: In Table 4, the brackets [ ] are required for the IPv6 addresses.
The content of option 17 should be <2-byte Option Number 201|202|203> <2-byte length> <data>.
Configuring the DHCP Server
Configure the DHCP server to support Option 16 and Option 17.
NOTE:
The format of DHCPv6 Option 16 and Option 17 are fully defined in RFC 3315.
Linux iSCSI Boot Setup
Linux iSCSI boot is supported on Red Hat Enterprise Linux 5 update 1 and later and SUSE Linux Enterprise Server 10 SP1 and
later.
The Linux iSCSI boot setup consists of:
Configuring the iSCSI Target
Configuring the iSCSI Boot Parameters
Changing the BIOS Boot Order
Installing to Target
Booting
Configuring the iSCSI Target
See Configuring the iSCSI Target.