Reference Guide

2.4 GHz radios are assigned a 20 MHz wide channel, and the 5 GHz and 6 GHz radios are assigned an 80
MHz wide channel.
Note
The 80 MHz wide channel is supported by the 802.11ac/ax radios only.
• 2.4 GHz Radios – Smart RF will assign a 20 MHz wide channel (1, 6, or 11) to each Smart RF managed
radio.
• 5 GHz Radios – Smart RF will assign a permitted 20 MHz, 40 MHz, 80 MHz, or 160 MHz channel,
provided that the AP model supports 160 MHz. (21, 25, 36, 40, 44, 48, 52, 56, 60,64, 100, 104, 108, 112,
116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165, or 173) to each Smart RF-managed radio.
• 6 GHz Radios – Smart RF will assign a permitted 20 MHz, 40 MHz, 80 MHz, or 160 MHz channel. This
plan includes the following channels: 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57,61, 65, 69, 73, 77,
81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177,
181, 185, 189 193, 197, 201, 205, 209, 213, 217, 221, 225, 229, 233.
A best practice is to use the highest available channel width on the 5 GHz band in low density
deployments and 20 MHz channel width in high density environments where channel reuse must be
achieved.
Figure 8: Channel Plan dialog
For 5 GHz Smart RF managed radios, consider removing channels from the available channel list. For
example, consider removing channels subject to Dynamic Frequency Selection (DFS) to minimize the
impact to wireless clients if a radar is detected. It may also be desirable to remove certain channels for
voice handsets to optimize roaming or legacy 802.11a devices, which do not support the UNII2/2e high
band.
Smart RF Policy
Channel and Power
Extreme Campus Controller Smart RF Reference Guide for version 5.46.02 17