user manual

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Cisco Aironet 1200 Seres Access Point Software Configuration Guide
OL-2159-05
Chapter 3 Radio Configuration and Basic Settings
Radio Configuration
• No—Devices that do not specify an SSID (devices that are “broadcasting” in search of an access
point or bridge to associate with) are not allowed to associate with the access point or bridge. With
No selected, the SSID used by the client must exactly match one of the radio’s SSID.
Enable World Mode
When you select yes from the world-mode pull-down menu, the access point adds channel carrier set
information to its beacon. Client devices with world-mode enabled receive the carrier set information
and adjust their settings automatically.
Data Rates
You use the data rate settings to choose the data rates the radio uses for data transmission. The rates are
expressed in megabits per second.
The access point always attempts to transmit at the highest data rate set to Basic. If there are obstacles
or interference, the access point steps down to the highest rate that allows data transmission. For each
data rate, a drop-down menu lists three options:
• Basic—Allows transmission at this rate for all packets, both unicast and multicast. At least one of
the access point’s data rates must be set to Basic.
• Yes —The access point transmits only unicast packets at this rate; multicast packets are sent at one
of the data rates set to Basic.
• No—The access point does not transmit data at this rate.
You can use the Data Rate settings to set up an access point to serve client devices operating at specific
data rates. For example, to set up the internal radio for 11 megabits per second (Mbps) service only,
select Basic for 11 and select Yes for the other data rates. Figure 3-6 shows the Data Rates set up for
11-Mbps service only.
Figure 3-6 Data Rate Settings for 11 Mbps Service Only
To set up the access point to serve only client devices operating at 1 and 2 Mbps, for example, select
Basic for 1 and 2 and set the rest of the data rates to Yes . Figure 3-7 shows the Data Rates set up for 1-
and 2-Mbps service only.
Figure 3-7 Data Rate Settings for 1- and 2-Mbps Service Only
The Optimize Radio Network For setting on the Express Setup page selects the data rate settings
automatically. When you select Optimize Radio Network For Throughput on the Express Setup page,
all data rates are set to basic. When you select Optimize Radio Network For Range on the Express
Setup page, the lowest data rate (1.0 on the internal radio and 6.0 on the radio module) is set to basic,
and the other data rates are set to yes. If you leave the setting at Default for the internal radio, the 1.0
and 5.5 data rates are set to basic and the 2.0 and 11.0 data rates are set to yes (on the radio module, 6.0,
12.0, and 24.0 are set to basic and 9.0, 18.0, 36.0, 48.0, and 54.0 are set to yes).