Brocade Fabric OS Troubleshooting and Diagnostics Guide v6.2.0 (53-1001187-01, April 2009)

Fabric OS Troubleshooting and Diagnostics Guide 49
53-1001187-01
Considerations for downgrading firmware
5
Message Cannot upgrade directly to v6.0. Upgrade your switch to v5.2.1_NI1 or v5.3.0 first before upgrading
to the requested version.
Probable cause and recommended action
If the switch is running v5.2.1 or earlier, you will not be allowed to upgrade directly to v6.0 because
of the “two-version” rule.
Upgrade your switch to Fabric OS version v5.2.1_NI1 or v5.3.0 before upgrading to v6.0
Message Non-disruptive firmwaredownload is not supported when downgrading to 6.1. Please use
firmwaredownload -s to download the 6.1 firmware.
Probable cause and recommended action
If the switch is running v6.2.0, you will not be allowed to downgrade directly to v6.1.x without
causing disruption to your fabric.
Downgrade using the firmwareDownload -s command. For more information on using this
command, refer to the Fabric OS Administrator’s Guide.
Message Firmwaredownload of blade application firmware failed. Reissue firmwareDownload to recover.
Probable cause and recommended action
The firmware download operation was attempting to upgrade the SAS image while the blade was
operational.
Retry the firmwaredownload command again.
IP settings
This message refers to any IP settings that need to be fixed prior to downgrading the firmware.
Message Cannot downgrade due to the presence of IPv6 addresses on the switch. Please reconfigure these
addresses before proceeding. (Firmwaredownload will tell you which addresses are configured
with IPv6 and commands used to remedy.)
Probable cause and recommended action
If the switch is running v5.3.0 or later, and if there are any IPv6 addresses configured, e.g. switch IP
address, syslog IP addresses, radius server, etc. you cannot downgrade to a version that does not
support IPv6.
Use the ipAddrSet command to change the IPv6 addresses to IPv4 addresses.
Platform
These messages are switch features or fabric-wide settings that need to be removed or disabled
before downgrading the firmware.