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258 Fabric OS Administrator’s Guide
53-1002745-02
Preparing for a firmware download
9
Preparing for a firmware download
Before executing a firmware download, it is recommended that you perform the tasks listed in this
section. In the unlikely event of a failure or timeout, these preparatory tasks enable you to provide
your switch support provider the information required to troubleshoot the firmware download.
It is recommended that you use the configUpload command to back up the current configuration
before you download firmware to a switch. Refer to “Configuration file backup” on page 244 for
details.
1. Read the release notes for the new firmware to find out if there are any updates related to the
firmware download process.
2. Connect to the switch and log in using an account with admin permissions. Enter the
firmwareShow command to verify the current version of Fabric OS.
Brocade does not support upgrades from more than one previous release. For example,
upgrading from Fabric OS v7.0.x to v7.1.0 is supported, but upgrading from Fabric OS v6.4.x
directly to v7.1.0 is not supported. Upgrading a switch from Fabric OS v6.4.x to v7.1.0 is a
two-step process—first upgrade to v7.0.x, and then upgrade to v7.1.0.
3. Use the configUpload command prior to the firmware download. Save the configuration file on
your FTP or SSH server or USB memory device on supported platforms.
4. Optional: For additional support, connect the switch to a computer with a serial console cable.
Ensure that all serial consoles (both CPs for Backbones) and any open network connection
sessions, such as Telnet, are logged and included with any trouble reports.
TABLE 49 Backbone HA sync states
Active CP Fabric OS
version
Standby CP Fabric OS
version
HA sync state Remedy
v6.2.0 v6.2.0 inSync N/A
v6.2.x v6.3.0 inSync N/A
v6.3.0 v6.2.x If Ethernet Switch Service
is enabled, no sync.
Run firmwareDownload -s on the
standby CP and upgrade it to v6.3.0.
v6.3.0 v6.3.0 inSync N/A
v6.3.0 v6.4.0 inSync N/A
v6.4.0 v6.3.0 inSync Run firmwareDownload -s on the
standby CP and upgrade it to v6.4.0.
v6.4.0 v6.4.0 inSync N/A
v7.0.0 v6.4.0 inSync Run firmwareDownload -s on the
standby CP to upgrade it to v7.0.0
v7.0.0 v7.0.0 inSync N/A
v7.1.0 v7.1.0 inSync N/A
v7.0.0 v7.1.0 inSync N/A
v7.1.0 v7.0.0 inSync N/A
v6.4.0 v7.1.0 Not inSync N/A
v7.1.0 v6.4.0 Not inSync N/A