Cisco Cisco Aironet 3800i Access Point Guía De Instalación

The Flexible Radio Assignment (FRA) feature automatically detects when a high number of devices 
are connected to a network and changes the dual radios in the access point from 2.4 GHz/5 GHz to 
5 GHz/5 GHz to serve more clients. The access point performs this function while still monitoring the 
network for security threats and RF Interference that may affect performance. Flexible Radio 
Assignment improves mobile user experience for high-density networks.

FRA has the different modes of operation:

•Default operating mode—Serving Clients on both 2.4 GHz and 5 GHz

•Dual 5 GHz Mode—Serving clients on both 5 GHz Radios

•Wireless Security Monitoring—Scanning both 2.4 GHz and 5 GHz for security threats while also 
serving 5 GHz clients

The 3802E model has a Smart antenna connector (see 

), which is connected directly to the 

flexible radio. Without a supported external antenna connected to the Smart Antenna connector, the 
flexible radio can stay only in 2.4 GHz mode. If an external antenna is connected, the flexible radio 
can be used in the full Flexible Radio Assignment mode, allowing dual 5 GHz and Wireless Security 
Monitoring modes.

To connect to any supported RP-TNC connector-type external antenna to the Smart antenna 
connector, use the DART cable connector AIR-CAB002-DART-R= (see 

), which is to be 

procured separately from Cisco.