Points to Note When Using the WXR100, WX1200, WX4400, or WX2200

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backup, refer to the section titled “Backing Up and Restoring the System” on page 613 of the MSS configuration guide. For details on the procedure for 3WXM, refer to the section titled “Upgrading 3WXM” of the 3WXM Reference Manual.

2Upgrade 3WXM before upgrading the wireless switch (MSS). Newer versions of 3WXM are designed to handle older versions of MSS and will change their configuration model for switches that are running older versions of MSS. For example, 3WXM 6.0 can handle switches running 4.0.x, 4.1.x, 4.2.x, 5.0.x, or 6.0.x. However, older versions of 3WXM are not designed to manage newer versions of MSS. For example, 3WXM 4.2 is not designed to manage a wireless switch running 6.0.

3After completing a successful upgrade of 3WXM, upgrade the wireless switch to the same major soft- ware version. 3Com recommends always running the same major version of 3WXM and MSS in a produc- tion environment. For example, 6.0.x.

4If the CLI of the wireless switch indicates unsaved configuration changes after completing the upgrade (indicated with a * in front of the system name on the CLI), save the configuration using the 'save configura- tion' command.

5When upgrading several switches, upgrade one at a time. After the upgrade has been completed on each switch, verify that it is operating properly before pro- ceeding on to the next switch.

6After the MSS upgrade has been completed, refresh the switch status in 3WXM. If Network changes are detected, they should be reviewed carefully before deciding whether to accept them into 3WXM. Accept

all Network changes before attempting to deploy any Local changes.

7After Network changes have been accepted and the switch status has been refreshed, carefully examine any remaining Local changes in 3WXM before decid- ing whether to deploy them to the wireless switch.

8If you need to downgrade to an older version of MSS, the system will provide the option to use an automat- ically archived configuration file that was created when the system was upgraded. To apply a configura- tion that is compatible with the older version of MSS, you may choose to apply this archived configuration file.

Best Practice When Powering Down a Switch

If a WXR100 or WX1200 is connected to Power Sourcing Equipment (PSE), it is possible for the switch to remain powered on even when the power cord is unplugged. PSE can be a dedicated PoE injector or even another networking switch such as the WX that is capable of supplying PoE. To ensure that the switch is powered off, unplug the power cord, then unplug all Ethernet cables that are connected to other PoE devices.

System Configuration Best Practices

3Com strongly recommends that you use 3Com Wireless Switch Manager (3WXM) for archiving and version control of network-wide wireless LAN switch configurations. 3Com also recommends that you archive the CLI-based configuration files of individual WX switches by copying the configurations to a server.