a-external-antenna

a-external-antenna <gain>

Description

This command configures external antenna connectors for an IAP.

Syntax

Parameter	Description	Range
<gain>	Configures the antenna gain. You can configure a gain value in dBi for the following types of antenna: l Dipole/Omni l Panel l Sector	Diploe/Omni - 6 Panel -14 Sector - 14

Usage Guidelines

If your IAP has external antenna connectors, you need to configure the transmit power of the system. The configuration must ensure that the system’s Equivalent Isotropically Radiated Power (EIRP) is in compliance with the limit specified by the regulatory authority of the country in which the IAP is deployed. You can also measure or calculate additional attenuation between the device and antenna before configuring the antenna gain. To know if your AP device supports external antenna connectors, see the Install Guide that is shipped along with the AP device.

EIRP and Antenna Gain

The following formula can be used to calculate the EIRP limit related RF power based on selected antennas (antenna gain) and feeder (Coaxial Cable loss):

EIRP = Tx RF Power (dBm)+GA (dB) - FL (dB)

The following table describes this formula:

Table 1: Formula Variable Definitions

Formula Element	Description
EIRP	Limit specific for each country of deployment
Tx RF Power	RF power measured at RF connector of the unit
GA	Antenna gain
FL	Feeder loss

For information on antenna gain recommended by the manufacturer, see www.arubanetworks.com.

Example

The following example configures external antenna connectors for the IAP with the 5 GHz radio band.

(Instant AP)# a-external-antenna 14

Command History

Version	Description
Aruba Instant 6.2.1.0-3.3	This command is introduced.

Command Information

IAP Platform	Command Mode
All platforms	Privileged EXEC mode