User's Manual

5-65

Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide

OL-4211-05

Chapter 5 Configuring the Client Adapter

Configuring Band Usage

If your AP coverage permits it, follow these steps to configure the client profile only in ADU to use the

5GHz (802.11a) or 2.4GHz (802.11b/g) band, not both:

Step 1 Launch ADU.

Step 2 Click Profile Management.

Step 3 Select the profile of interest and click Modify.

Step 4 Click Advanced.

Step 5 Under Wireless Mode, uncheck the rates that you do not intend to use.

If you do not use ADU to manage CB21AG, then you must use registry settings to select the rates. Follow

these steps:

1. Launch regedit and navigate to the following entry:

HKLM\System\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002bE10318}

2. Right-click and choose Find and find the variable called “NetBand.”

This variable will be under a four-digit subkey whose DriverDesc value is “Cisco Aironet

802.11a/b/g Wireless Adapter.”

The NetBand REG_SZ variable is a bitmask of supported rates. By default, this variable it is set to

15 decimal (0x0F). The supported values are:

–

802.11a 0x01

–

(not used) 0x02

–

802.11b 0x04

–

802.11g 0x08

–

(not used) 0x10

For example, to support only 11b and 11g rates, the bitmask would be 0x04 + 0x08 = 0x0C = 12 decimal.