Brocade Fabric OS Troubleshooting and Diagnostics Guide (Supporting Fabric OS v7.3.0) - Manual (Page 74)

58 Fabric OS Troubleshooting and Diagnostics Guide
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Considerations for downgrading firmware
5
Downgrade is not allowed because there are few ports other than the first
octet of the blade/switch configured for 10G/N10 speeds.Please change the
octet speed combo of those ports to 1 using "portcfgoctetspeedcombo" CLI and
change their speeds using "portcfgspeed" CLI.
Downgrade is not allowed because Monitoring and Alerting Policy Suite (MAPS)
is enabled. Please disable MAPS using "mapsconfig --disable" before
proceeding.
Downgrade to pre-7.2 Fabric OS versions is not allowed. Please configure
TACACS+ keys of length in the range (8-40) characters using aaaconfig CLI
{Usage: aaaconfig --change -conf tacacs+ [-s ], before
performing a firmware downgrade.
Downgrade is not allowed because ICL ports are configured as EX-ports.Please
use "portcfgshow" to view the ICL EX ports and use "portcfgexport" to disable
the EX feature on those ports before downgrading.
The following example shows feature-related messages that you may see if you were downgrading
from Fabric OS v7.1.0 to v7.0.x:
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 " to disable it before downgrading.
Downgrade is not allowed because R-RDY flow control ports are configured as
D-Ports. Please use "portdporttest --show all" to view the port list and
"portcfgdport --disable" to disable before downgrading.
Downgrade is not allowed because D-Port is configured with DWDM mode. Please
use "portcfgshow" to view the port list and "portcfgdport --enable" to reset
DWDM mode before downgrading.
Downgrade is not allowed because ICL ports are configured as D-Ports. Please
use "switchshow" to view the D-port list and use "portcfgdport --disable
" 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.
Downgrade is not allowed because one or more ports have FEC enabled.Please use
"portcfgfec --disable" command to disabled FEC.