Fabric OS Troubleshooting and Diagnostics Guide v6.4.0 (53-1001769-01, June 2010)

60 Fabric OS Troubleshooting and Diagnostics Guide
53-1001769-01
Considerations for downgrading firmware
5
IPSec on FCIP tunnels requires version v6.3.1 or higher for 7800, and v6.4.0
or higher for FX8-24. Please use "portcfg fciptunnel" to disable IPSec for all
FCIP tunnels and try again.
Downgrade is not allowed because Persistent PID is enabled. Please use "ag
--persistentpidenable 0" to disable the feature before downgrading.
Downgrade is not allowed because one or more ports are locked as E-port.Please
use "portcfgeport" CLI to remove the lock.
Downgrade is not allowed because fillword has been configured as> 1 for one or
more ports which requires firmware version 6.4 or higher. Pleaseuse
"portcfgfillword" CLI to remove fillword configuration before downgrading.
Downgrade is not allowed because Lossless is enabled. If Virtual Fabric is
enabled, then Lossless is enabled on at least one logical switch. Please use
"dlsset --disable -lossless" (on each logicalswitch, if Virtual Fabric) to
disable the feature before downgrading.
The messages in this section are displayed if an exception case is encountered during firmware
downgrade. The following example shows blocking messages that you may see if you were
downgrading from v6.4.0 to v6.3.0 with any v6.3.1 software features enabled:
Downgrade is not allowed because AG is enabled. Please run "ag --modedisable"
command to disable AG mode before proceeding.
IPSec on FCIP tunnels requires version v6.3.1 or higher for 7800, and v6.4.0
or higher for FX8-24. Please use "portcfg fciptunnel" to disable IPSec for all
FCIP tunnels and try again.
VLAN Tagging on FCIP tunnels for 7800/FX8-24 requires version v6.3.1 or
higher. Please use "portcfg fcipcircuit <VE-Port> modify" to disable VLAN
Tagging on all FCIP Circuits.
Blade types
This message pertains to any blade in a chassis that may need to be removed or powered off
before a firmware download begins.
Message Cannot downgrade due to presence of blade type 75. Remove or power off these blades before
proceeding.
Probable cause and recommended action
The firmware download operation was attempting to downgrade a system to Fabric OS v6.2.0 or
earlier with one or more of the Brocade FX8-24 AP blades (blade ID 75) in the system. Brocade DCX
Extension blades are not supported on firmware v6.2.0 or earlier, so the firmware download
operation failed.
Power off or remove the blade and try the operation again.