Usb Error Handling; Considerations For Downgrading Firmware; Preinstallation Messages - Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Troubleshooting Manual

5

USB error handling

USB error handling
The following table outlines how the USB device handles errors under specific scenarios and
details what actions you should take after the error occurs.
TABLE 10
Scenario under which download fails
An access error occurs during
firmwaredownload due to the
removal of the USB device, or USB
device hardware failure, etc.
USB device is not enabled.

Considerations for downgrading firmware

To avoid failure of a firmware downgrade, verify the firmware you are downgrading to supports all
the blades in the chassis and the firmware you are downgrading to supports all features you are
currently using. If not, you will need to disable or remove those features that are not supported.
Also, check for any one of the following conditions:
•
•
•
•
•

Preinstallation messages

The messages in this section are displayed if an exception case is encountered during firmware
download. The following example shows feature-related messages that you may see if you were
downgrading from v5.2.0 to v5.1.0:
44
USB error handling
If FC8-32 and/or FC8-48 port blade is inserted on Brocade 48000 director or Brocade DCX
enterprise-class platform, power off and remove the blade prior to downgrading the firmware.
If an EX_Port is configured and enabled on any one of the FC8-port blades, reconfigure the port
back to default prior to downgrading the firmware.
If port mirroring is configured and enabled on any one of the FC8-port blades, reconfigure the
port back to default prior to downgrading the firmware.
If Access Gateway ADS policy is enabled, disable ADS policy prior to downgrading the firmware.
If F_Port Trunking is enabled, disable it first prior to downgrading.
The following items need to be addressed before downloading the specified
firmware:
Port mirror connections detected. Please use portmirror --delete to remove
these mirror connections.
AD feature is in use. Please clear it using the ad --clear command.
Port configuration with EX ports enabled along with trunking for port(s) 58,
use the portcfgexport, portcfgvexport, and/or portcfgtrunkport commands to
disable the port configuration. Verify that the blade is ENABLED. (error 3)
Error handling
Firmwaredownload will timeout
and commit will be started to
repair the partitions of the CPUs
that are affected. See previous
table for details.
Firmwaredownload will fail with
an error message
Fabric OS Troubleshooting and Diagnostics Guide
Action
None.
Enable the USB device using the
usbStorage -e command and retry
firmwaredownload.
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