Dell Brocade G620 Brocade 8.0.1 Fabric OS Software Upgrade Guide - Page 23

Firmware download scenarios ∙ General firmware download considerations...23 ∙ Firmware download considerations for fixed-port switches...23 ∙ Firmware download considerations for Directors...25 ∙ Firmware download from a USB device...28 General firmware download considerations NOTE This section only applies when upgrading from Fabric OS 7.4.x to 8.0.1 or downgrading from Fabric OS 8.0.1 to 7.4.x. If you are attempting to upgrade from Fabric OS 7.2.x to 8.0.1 or downgrading from Fabric OS 8.0.1 to 7.2.x, you must enter the firmwaredownload -s command as described in Testing and restoring firmware on switches on page 33. The following items apply to all firmware downloads, whether for Directors or for fixed-port switches. ∙ You cannot upgrade any Brocade Gen 5 or earlier device to Fabric OS 8.0.0, only to Fabric OS 8.0.1 and later. ∙ You cannot downgrade any Brocade Gen 6 or later device other than the Brocade G620 to any version of Fabric OS earlier than Fabric OS 8.0.1. ∙ Fabric OS 8.0.0 can only be installed on the Brocade G620 switch. ∙ You cannot download firmware to migrate from Fabric OS 8.0.1 to 7.2.x (or earlier) or from Fabric OS 7.2.x (or earlier) to 8.0.1. ∙ All Brocade Directors and fixed-port switches maintain primary and secondary partitions for firmware. ∙ By default the firmwaredownload command automatically copies the firmware from one partition to the other. Under normal circumstances you should use the default settings and not override this option. By default, firmwaredownload performs a full install, along with an automatic reboot and automatic commit. These alternate modes are only selectable when the platform is in single control processor (-s) mode, in which case autoreboot is OFF by default. Overriding the autocommit option in downloads ATTENTION This option should only be used by experienced administrators for specific situations (such as evaluating a new version of the firmware). The firmwarerestore command can only run if autocommit was disabled during the initial firmware download. To download firmware with the autocommit option disabled, enter firmwaredownload and use the -s and -n options. Refer to the Fabric OS Command Reference for a complete description of the firmwaredownload and available options. Firmware download considerations for fixed-port switches The following paragraph is specific to firmware downloads for Brocade 7840 fixed-port switches. A VE_Port on a Brocade 7840 that does not have HA configured can go down due to external events during hot code load. In such scenario, traffic will be disrupted on that particular VE port. After the hot code load completes, it may be possible that the VE_Port will come up as a G_Port, and consequently, traffic will not resume. In such scenario, you will need to perform an explicit portdisable and portenable command combination on that VE_Port to recover it. Brocade Fabric OS Upgrade Guide 53-1004124-01 23