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120 Brocade Adapters Installation and Reference Manual53-1002144-01Network boot4Updating boot code with BCU commandsUse the following procedure to update boot code using BCU commands.1. Download the boot code image zip file (brocade_adapter_boot_fw_.zip) from theBrocade adapters website to a folder on your local drive using the following steps:a. Go to the adapters website at www.brocade.com/adapters.b. Navigate to the adapters Downloads page.c. Select your operating system from the Downloads list to display appropriate downloadfiles.d. Download the boot code image from the “Boot Code” area.2. Extract the boot code image file.3. Enter the following BCU command:bcu boot --update file> -awhere: ID of the adapter (adapter) name of firmware image file-a Indicates that the boot code should be updated on all installed Brocadeadapters found on the host. Note that the adapter identification (ad_id)should not be specified if the -a option is specified.Network bootThe Network or the preboot eXecution environment (PXE) boot feature allows a host to boot itsoperating system from a system located somewhere on the Ethernet LAN instead of the host’s localdisk or over the SAN. Booting from a remote LAN location provides the obvious advantage ofrecovering quickly from a host or adapter malfunction. With PXE BIOS enabled on the adapter for aspecific port ID (or a VLAN ID for a specified port), replacing an old host with a new one involvesinstalling the adapter from the old host into the new one with the same configuration, then bootingthe new host. The host’s operating system automatically boots from the remote LAN device.NOTEEnabling VLAN during network boot requires support from the operating system and has not beenfully validated due to operating system limitations.Although fast recovery from a malfunction is a big advantage, following are considerations for thehost and adapter, depending on the replacement situation:• Even though you install a similar host, the new host may require unique System BIOS optionsand other settings, or internal IDE drives may need to be disconnected or disabled to initiate anetwork boot.• If replacing the Brocade adapter in a host with a similar Brocade adapter, you will need toreconfigure the adapter to boot from the appropriate remote boot device.• If replacing a host with a different model, you may be prompted to install the adapter driver forthe existing adapter.
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