Wireless/Redundant Edge Services xl Module Management and Configuration Guide WS.02.xx and greater

3-17
Radio Port Configuration
Configuring Radio Settings
In addition, even when you have selected g rates (such as 6, 12, and 24) for
the basic rates, you should consider allowing b rates (1, 2, 5.5, and 11) for the
supported rates. 802.11b stations still cannot connect to the WLAN, but RPs
and 802.11g stations can use the b rates to avoid interference from any 802.11b
stations that might be in the vicinity. Adding the b rates to the supported rates
is characteristic of Wi-Fi g-only mode (as opposed to pure-g mode): Wi-Fi g-
only protects against 802.11b interference.
To select supported data rates for newly adopted radios of a particular type,
complete these steps:
1. Access the Rate Settings screen for the radio type.
2. In the Supported Rates column, check the boxes next to the additional data
rates that you want the radio to support.
3. Click the OK button.
To deselect all of a radio’s data rates at once, click the Clear All Rates button.
Remember, however, that you must configure at least one basic data rate for
the radio. Otherwise, an error message will be displayed when you click the
OK button, as shown in Figure 3-8.
Figure 3-8. Clear All Rates Error Message.
Setting Advanced Radio Properties
The third section of a radio type’s default Configuration screen allows you to
configure advanced radio properties. You can:
■ alter the antenna mode
■ limit the maximum number of stations supported by the radio
■ set an adoption preference ID
■ require support for the short preamble (typically, to raise data rates in a
network that includes only 802.11g stations or VoWLAN devices)
■ improve wireless network performance by fine tuning:
• the Request to Send (RTS) threshold
• the delivery traffic indication messages (DTIM) and beacon intervals
■ set the self healing offset in networks that use neighbor recovery