User guide

User Guide NetXtreme II
September 2013
Broadcom Corporation
Document INGSRVT78-CDUM100-R iSCSI Boot Page 83
Dynamic iSCSI Boot Configuration
In a dynamic configuration, you only need to specify that the system’s IP address and target/initiator information are provided
by a DHCP server (see IPv4 and IPv6 configurations in Configuring the DHCP Server to Support iSCSI Boot). For IPv4, with
the exception of the initiator iSCSI name, any settings on the Initiator Parameters, 1st Target Parameters, or 2nd Target
Parameters screens are ignored and do not need to be cleared. For IPv6, with the exception of the CHAP ID and Secret,
any settings on the Initiator Parameters, 1st Target Parameters, or 2nd Target Parameters screens are ignored and do not
need to be cleared. For information on configuration options, see Table 1.
NOTE: When using a DHCP server, the DNS server entries are overwritten by the values provided by the DHCP
server. This occurs even if the locally provided values are valid and the DHCP server provides no DNS server
information. When the DHCP server provides no DNS server information, both the primary and secondary DNS
server values are set to 0.0.0.0. When the Windows OS takes over, the Microsoft iSCSI initiator retrieves the iSCSI
Initiator parameters and configures the appropriate registries statically. It will overwrite whatever is configured.
Since the DHCP daemon runs in the Windows environment as a user process, all TCP/IP parameters have to be
statically configured before the stack comes up in the iSCSI Boot environment.
If DHCP Option 17 is used, the target information is provided by the DHCP server, and the initiator iSCSI name is retrieved
from the value programmed from the Initiator Parameters screen. If no value was selected, then the controller defaults to the
name:
iqn.1995-05.com.broadcom.<11.22.33.44.55.66>.iscsiboot
where the string 11.22.33.44.55.66 corresponds to the controller’s MAC address.
If DHCP option 43 (IPv4 only) is used, then any settings on the Initiator Parameters, 1st Target Parameters, or 2nd Target
Parameters screens are ignored and do not need to be cleared.
To configure the iSCSI boot parameters using dynamic configuration
1. From the General Parameters Menu screen, set the following:
• TCP/IP parameters via DHCP: Enabled. (For IPv4.)
• IP Autoconfiguration: Enabled. (For IPv6, non-offload.)
• iSCSI parameters via DHCP: Enabled
• CHAP Authentication: Disabled
• DHCP Vendor ID: BRCM ISAN
• Link Up Delay Time: 0
• Use TCP Timestamp: Enabled
• Target as First HDD: Disabled
• LUN Busy Retry Count: 0
• IP Version: IPv6. (For IPv6, non-offload.)
• HBA Boot Mode: Disabled. (Note: This parameter cannot be changed when the adapter is in Multi-Function mode.)
2. Select ESC to return to the Main menu.
NOTE: Information on the Initiator Parameters 1st Target Parameters, and 2nd Target Parameters screens are
ignored and do not need to be cleared.
3. Select Exit and Save Configurations.