Troubleshooting and Diagnostics Guide

Fabric OS Troubleshooting and Diagnostics Guide 55

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USB error handling

If the firmware download fails in a director or enterprise-class platform, the CPs may end up with

different versions of firmware and are unable to achieve HA synchronization. In such cases, issue

the firmwareDownload -s command on the standby CP; the single mode (-s) option allows you to

upgrade the firmware on the standby CP to match the firmware version running on the active CP.

Then reissue the firmwareDownload command to download the desired firmware version to both

CPs. For example, if CP0 is running v7.0.0 on the primary and secondary partitions, and CP1 is

running v7.1.0 on the primary and secondary partitions, then synchronize them by issuing the

firmwareDownload command.

NOTE

Some of the messages include error codes (as shown in the following example). These error codes

are for internal use only and you can disregard them.

Port configuration with EX ports enabled along with trunking for port(s) 63, use

the portCfgEXPort, portCfgVEXPort, and portCfgTrunkPort commands to remedy this.

Verify blade is ENABLED. (error 3)

Gathering additional information

You should follow these best practices for firmware download before you start the procedure:

• Keep all session logs.

• Enter the supportSave or the supportShow command before and after entering the

firmwareDownload command.

• If a problem persists, package together all of the information (the Telnet session logs and serial

console logs, output from the supportSave command) for your switch support provider. Make

sure you identify what information was gathered before and after issuing the

firmwareDownload command.

USB error handling

Table 11 outlines how the USB device handles errors under specific scenarios and details what

actions you should take after the error occurs.

TABLE 11 USB error handling

Scenario under which download fails Error handling Action

An access error occurs during

firmwaredownload because the

removal of the USB device, or USB

device hardware failure, etc.

Firmwaredownload times out

and commit is started to repair

the partitions of the CPUs that

are affected. See previous table

for details.

None.

USB device is not enabled. Firmwaredownload fails with an

error message

Enable the USB device using the

usbStorage -e command and retry

firmwaredownload.