Brocade Communications Systems 4900 Service Manual download pdf (Page 254)

232 Web Tools Administrator’s Guide

Publication Number: 53-1000435-01

General Web Tools limitations

Firmware download There are multiple phases to firmware download and activation. When Web Tools

reports that firmware download has completed successfully, this indicates that a basic

sanity check, package retrieval, package unloading, and verification was successful.

Web Tools forces a full package install.

A reboot is required to activate the newly downloaded firmware. This reboot is done

automatically; however, although Web Tools screens will continue to be visible during

the reboot, they will not be available. Wait approximately 10 minutes to ensure that all

of the application windows have been restored. If Web Tools fails to respond after 20

minutes, you might need to close all Web Tools applications windows and restart them,

or to contact your system administrator for network assistance.

The Web Tools loss of network connectivity during a failover or reboot (initiated though

the firmwareDownload) varies for different configurations:

Brocade 24000 and 48000 directors: loss of network connectivity is up to 5 minutes if

the power-on self-test (POST) is disabled. If POST is enabled, the loss of network

connectivity can exceed 5 minutes.

Brocade 200E, 3250, 3850, 3900, 4012, 4016, 4018, 4020, 4024, 4100, 4900,

5000, and 7500 switches: loss of network connectivity is up to 1 minute if POST is

disabled. If POST is enabled, the loss of network connectivity can exceed 1 minute.

Firmware downgrade If you try to run Web Tools on a switch after downgrading the firmware, Web Tools may

not open. This is due to the presence of old application cache files in Java. The

workaround is to delete the application cache files using the Java Control Panel.

HTTP timeout Very occasionally, you might see the following message when you try to get data from a

switch or to send a request to the switch:

Failed to get switch response. Please verify the status

of your last operation and try again if necessary.

This indicates that an HTTP request did not get a response. The request was sent to the

switch, but the connection was down, probably caused by a temporary loss of the Web

server on the switch. Due to the nature of an HTTP connection, Web Tools will report

this error after a 90-second default timeout.

In this case, verify the status of your last request, using telnet to check related status,

or click the Refresh button from the Web Tools application you were working on to

retrieve related data. If your request did not get through to the switch, resubmit it.

Executing a refresh from Web Tools retrieves a copy of switch data at that moment; the

data you entered can be lost if it had not already committed to the switch.

Java Plug-in If you remove the certificate (not recommended) from the Java Control Panel, you must

close and reopen the browser for the certificate removal to take effect.

Java Plug-in If you have a Web Tools session open and you open a second session using the File >

New browser menu, this results in unexpected behavior of the original Web Tools

session. For example, you cannot change Admin Domains in the second session.

Web Tools supports only one browser instance per JRE, and when you open another

window using the File > New menu, the two windows share the same JRE environment.

Workaround: Open two independent browser sessions.

TABLE 14 Web Tools limitations (Continued)

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Brocade Communications Systems 4900 Service Manual Page 254

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