Brocade Communications Systems StoreFabric SN6500B Troubleshooting Manual page 73

The messages in this section are displayed if an exception case is encountered during firmware
downgrade. The following example shows feature-related messages that you may see if you were
downgrading from v7.1.0 to v6.4.x:
The messages in this section are displayed if an exception case is encountered during firmware
downgrade. The following example shows feature-related messages that you may see if you were
downgrading from v7.1.0 to v7.0.x:
Fabric OS Troubleshooting and Diagnostics Guide
53-1002751-01
Considerations for downgrading firmware
Checking version compatibility...
Version compatibility check passed..
The following items must be addressed before downloading the specified
firmware:
FC8-32E and FC8-48E are not supported by the targeted firmware. Please use
slotshow to determine which of these are installed and remove them before
continuing.
Downgrade is not allowed because one or more ports name length is greater than
32 bytes. Please use "portname" CLI to check and fix the port name/length
before downgrading.
Downgrade is not allowed because Device Based Routing is configured. Please
use "aptpolicy" to change the routing policy.
Downgrade is not allowed because Location ID is configured. Please use
"configure" command to clear Location ID.
Downgrade is not allowed because the existing zone configuration is more than
1MB. To downgrade to lower firmware version modify the existing zone
configuration to 1MB or lesser.
Downgrade is not allowed because switch is in AG mode and D-Ports are
configured.Please use "switchshow" to view the D-port list and use
"portcfgdport --disable <port_no>" to disable it before downgrading.
Downgrade is not allowed because one or more ports have credit recovery
enabled. Please use "portcfgcreditrecovery --disable" command to disabled
credit recovery.
Auto CSCTL feature is enabled. If you are downgrading the firmware, please
disable the auto csctl mode using "configurechassis" command and following
that either perform powercycle on each non-CP blades or reboot the system
before performing firmwaredownload.
Downgrade is not allowed because one or more ports have FEC enabled. Please
use "portcfgfec --disable" command to disabled FEC.
Downgrade to selected version is not allowed because few ports are configured
with Longdistance -buffers option. Please remove the configuration using
"portcfglongdistance L0" CLI or change the configuration with -distance
option.
Downgrade is not allowed because Location ID is configured. Please use
"configure" command to clear Location ID.
Downgrade is not allowed because switch is in AG mode and D-Ports are
configured. Please use "switchshow" to view the D-port list and use
"portcfgdport --disable <port_no>" to disable it before downgrading.
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