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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-30644-01
Chapter 4 Configuring the Access Point for the First Time
Support for 802.11ac
1. Maximum transmit power will vary by channel and according to individual country regulations. Refer to the product
documentation for specific details.
2. Tx—Transmitter.
Support for 802.11ac
802.11ac is the next generation wireless standard of 802.11. It is designed to provide high throughput
and operate in the 5 GHz band. 802.11ac is supported on the 3700, 2700, and 1700 series access points.
The 802.11ac radio depends on the 802.11n radio to be fully functional. Shutting down the 802.11n radio
will affect the 802.11ac functionalities.
Channel Widths for 802.11ac
802.11n and 802.11ac radios operate in the same band. However the channel widths can be
independently configured with the restriction that it should be above the channel width configured on
802.11n. Please see Table 4-4 for more details on the supported channel width combinations.
Table 4-3 Inline Power Options based on Access Point Radio Configuration
Radio
Band Data Rate
Number
of Trans-
mitters
Cyclic Shift
Diversity
(CSD)
Maximum Transmit Power (dBm)
1
802.3af
Mode
(15.4W)
Enhanced PoE
Power
Optimized
Mode (16.8 W)
Enhanced PoE
Mode
(20 W)
2.4 GHz
802.11b 1 N/A 20 20 20
802.11g 1 N/A 17 17 17
802.11n (MCS 0-7) 1
2
Disabled
Enabled
(default)
17
Disabled
17
14 (17 per Tx)
2
17
20 (17 per Tx)
802.11n (MCS 8-15) 2 N/A Disabled 14 (17 per Tx) 20 (17 per Tx)
5 GHz
802.11a 1 N/A 17 17 17
802.11n (MCS 0-7) 1
2
Disabled
Enabled
(default)
17
Disabled
17
20 (17 per Tx)
17
20 (17 per Tx)
802.11n (MCS 8-15) 2 N/A Disabled 20 (17 per Tx) 20 (17 per Tx)
Table 4-4 Supported Channel Width Combinations
802.11n Channel Bandwidth 802.11ac Channel Bandwidth
20 20
20 40
20 80
40 40
40 80