Cisco Cisco Aironet 3600i Access Point Guía De Instalación
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Installing the 802.11ac Radio Module for Cisco Aironet 3600 Series Access Points
Overview
Overview
The 802.11ac radio in the module complements existing 5-GHz, 802.11n radios in the access point by
providing an independent 802.11ac overlay. IEEE 802.11ac is a wireless networking standard that
provides high-throughput WLANs on the 5-GHz band. 802.11ac builds on 802.11n in the following
ways:
providing an independent 802.11ac overlay. IEEE 802.11ac is a wireless networking standard that
provides high-throughput WLANs on the 5-GHz band. 802.11ac builds on 802.11n in the following
ways:
•
Shifts its focus solely to the 5-GHz band.
•
Increases channel width to 80-MHz channels.
•
Increases spectrum efficiency, allowing the radio to transmit data faster (256 QAM), relinquish the
spectrum faster, and use less power in the process.
spectrum faster, and use less power in the process.
Power Considerations
Installation of the radio module requires an additional 4.6 watts to power the access point. With a
module installed, the access point requires slightly more than what is delivered by an 802.3af
(15.4w)-capable Power over Ethernet (PoE) port in an upstream networking device.
module installed, the access point requires slightly more than what is delivered by an 802.3af
(15.4w)-capable Power over Ethernet (PoE) port in an upstream networking device.
Power options for the access point include:
•
Enhanced PoE, driving up to 20 W from the upstream switch to the access point
•
802.3at PoE+, driving up to 30 W from the upstream switch to the access point
•
Universal PoE, driving 60 W (2 x 30 W PoE+) from an appropriate switch; the access point uses one
of the PoE+ sources
of the PoE+ sources
•
Cisco AIR-PWRINJ4 power injector or local 18-Watt Cisco power supply AIR-PWR-B
Note
If the module is installed and only 802.3af power is present, the module will come up in Disabled state
when you power up the access point.
when you power up the access point.
Tip
Disabling the access point 2.4-GHz radio reduces power consumption so you can use 802.3af power with
the radio module enabled.
the radio module enabled.
Access Point Radio Considerations
Keep these points in mind after you install the radio module:
•
802.11ac clients are directed through band-steering to connect to the 802.11ac radio module
Note
Some 802.11ac client devices do not support DFS channels. If your 802.11ac radio module is operating
on DFS channels, some client devices will not be able to associate to the access point.
on DFS channels, some client devices will not be able to associate to the access point.
•
802.11ac is 5-GHz only technology, so the 2.4-GHz band will continue to service 802.11b/g/n
clients
clients
•
The integrated 802.11n radio in the access point and the 802.11ac radio module operate in tandem
on the 5-GHz band to support client devices on the same channels. Operating on the same channels
keeps the radios from competing.
on the 5-GHz band to support client devices on the same channels. Operating on the same channels
keeps the radios from competing.