User guide

User Guide NetXtreme II
September 2013
Broadcom Corporation
Document INGSRVT78-CDUM100-R FCoE Boot from SAN Page 203
present the option to press CTRL+R.
4. Once CTRL+R has been activated, the boot initiator will maintain a link in whatever phase has most recently succeeded
and allow you time to make the necessary provisioning corrections to proceed to the next phase.
5. If the initiator logs into the fabric, but is unable to log into the target, a CTRL+R will pause the boot process and allow
you to configure fabric zoning.
6. Once zoning is complete, the initiator will automatically log into all visible targets. If the initiator is unable to discover the
designated LUN on the designated target as provisioned in step 1, CTRL+R will pause the boot process and allow you
to configure selective LUN presentation.
7. The boot initiator will periodically poll the LUN for readiness, and once the user has provisioned access to the LUN, the
boot process will automatically proceed.
NOTE: This does not preclude the need to put the boot initiator into one-time disabled mode as described in One-
Time Disabled.
ONE-TIME DISABLED
Broadcom's FCoE ROM is implemented as Boot Entry Vector (BEV). In this implementation, the Option ROM only connects
to the target once it has been selected by BIOS as the chosen boot device. This is different from other implementations that
will connect to the boot device even if another device has been selected by the system BIOS. For OS installation over the
FCoE path, it is necessary to instruct the Option ROM to bypass FCoE and skip to CD/DVD installation media. As instructed
earlier, the boot order must be configured with Broadcom boot first and installation media second. Furthermore, during OS
installation, it is required to bypass the FCoE boot and pass through to the installation media for boot. It is required to do this
by one-time disabling the FCoE boot ROM from booting, and not by simply allowing the FCoE ROM to attempt to boot and
allowing the BIOS to fail through and boot the installation media. Finally, it is required that the FCoE ROM successfully
discover and test the readiness of the desired boot LUN in order for installation to proceed successfully. Failure to allow the
boot ROM to discover the LUN and do a coordinated bypass will result in a failure to properly install the O/S to the LUN. In
order to affect this coordinated bypass, there are two choices:
• Once the FCoE boot ROM discovers a ready target LUN, it will prompt you to press CTRL+D within 4 seconds to Stop
booting from the target. Press CTRL+D, and proceed to boot from the installation media.
• From CCM, set the Option ROM setting under MBA settings to One Time Disabled. With this setting, the FCoE ROM
will load once and automatically bypass once the ready LUN is discovered. On the subsequent reboot after installation,
the option ROM will automatically revert to Enabled.
Wait through all option ROM banners. Once FCoE Boot is invoked, it will connect to the target, and provide a 4 second
window to press CTRL+D to invoke the bypass. Press CTRL+D to proceed to installation.