Technical data

Configure an AP’s Radios with the CLI

Set Radio Transmit Power with the CLI

The radio transmit power changes the AP’s coverage area; this setting helps manage

contention between neighboring access points. Transmit power for Meru APs is

defined as the EIRP1 (Effective Isotropic Radiated Power) at the antenna and includes

the antenna gain. (This is important to remember; transmit power is not the power

at the connector.) Power level settings are dependent on the country code and the

radio band (and for 802.11a, the channel) in use.

For example, if the transmit power, configured with the command localpower, is set

to 20 dBm2, and the antenna gain is set 3 to 2 dBm, then the actual transmitted

power at the connector is 18 dBm.

If an external antenna with an 8dBi (isotropic) gain is used, then adjust the gain value

to the same value, 8. If the desired EIRP after the antenna is the same, then keep

the transmit power set to the same value, 20. For higher or lower EIRP values, adjust

the transmit power to the desired value.

The maximum power setting is an integer between 4-30dBm for 802.11/bg radios.

The Maximum Transmit Power for the 802.11a band is based on the channel in use,

as detailed in the following table, which shows the levels for the United States:

n-only-mode (new in 3.6)

Supports only 802.11n clients on the radio to improve

performance.

power

Note: Obsolete. Use localpower command instead

preamble-short Enables or disables short preambles.

protection-mode

Configures 802.11b/g interoperability mode. This setting

defaults to auto and should not be changed without

consulting Meru Support.

rf-mode

Configures the Radio Frequency mode (802.11a, b, g, or bg,

bgn, or an). Note that All APs on the same channel in a

Virtual Cell must have the same setting for rf-mode.

scanning channels Configures the channels for scanning

tuning Tunes the wireless interface

Table 16: Commands available in Radio Interface Configuration Mode

Command Purpose