Brocade Troubleshooting and Diagnostics Guide v6.1.0 (53-1000853-01, June 2008)

48 Fabric OS Troubleshooting and Diagnostics Guide
53-1000853-01
Considerations for downgrading firmware
5
Upgrade your switch to Fabric OS version v5.1.0 or v5.2.0 before upgrading to v5.3.0
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
These messages refer 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.
Message Default IP filter policies are not active on the switch. Please make the default IPv4 filter policies
active before downgrading.
Probable cause and recommended action
If switch is running v5.3.0 or later, and if any of the user-created IP filter policies are active, you
cannot downgrade to v5.2.0 or earlier.
Message Cannot downgrade to v5.3.0 or earlier because one or more FCIP tunnels have IPv6 interface or a
route address configured on the switch.
Probable cause and recommended action
You cannot downgrade to v5.3.x or earlier due to one or more FCIP tunnels having an Ethernet
interface or a route address configured with an IPv6 address.
Use the ipAddrSet command to reconfigure to IPv4 addresses first.
Message Cannot downgrade to v5.2.0 or earlier because user created IP filter policies are active.
Probable cause and recommended action
The default IP filter policies are not active on the switch. Make the default IPv4 filter policies active
before downgrading.