Specifications

7-4
Cisco Aironet 1200 Series Access Point Installation and Configuration Guide
OL-3446-01
Chapter 7 Configuring Radio Settings
Configuring Radio Data Rates
Configuring Radio Data Rates
You use the data rate settings to choose the data rates the access point 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, also called Require on the browser-based interface. If there are obstacles or
interference, the access point steps down to the highest rate that allows data transmission. You can set
each data rate (1, 2, 5.5, and 11 megabits per second) to one of three states:
• Basic (this is the default state for all data rates)—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.
• Enabled—The access point transmits only unicast packets at this rate; multicast packets are sent at
one of the data rates set to Basic.
• Disabled—The access point does not transmit data at this rate.
Note At least one data rate must be set to basic.
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 2.4-GHz radio for 11 megabits per second (Mbps) service only, set
the 11-Mbps rate to Basic and set the other data rates to Enabled. To set up the access point to serve
only client devices operating at 1 and 2 Mbps, set 1 and 2 to Basic and set the rest of the data rates to
Enabled. To set up the 5-GHz radio for 54 Mbps service only, set the 54-Mbps rate to Basic and set the
other data rates to Enabled.
You can also configure the access point to set the data rates automatically to optimize either range or
throughput. When you enter range for the data rate setting, the access point sets the 1 Mbps rate to basic
and the other rates to enabled. When you enter throughput for the data rate setting, the access point sets
all four data rates to basic.
Beginning in privileged EXEC mode, follow these steps to configure the radio data rates:
Step 3
station role
repeater | root
[ fallback { shutdown | repeater } ]
Set the access point role.
• Set the role to repeater or root.
• (Optional) Select the radio’s fallback role. If the access
point’s Ethernet port is disabled or disconnected from the
wired LAN, the access point can either shut down its radio
port or become a repeater access point associated to a
nearby root access point.
Step 4
end Return to privileged EXEC mode.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface dot11radio { 0 | 1 } Enter interface configuration mode for the radio interface. The
2.4-GHz radio is radio 0, and the 5-GHz radio is radio 1.