Users Guide

l Channel groups can be 80MHz (4 channels), 40MHz (2 channels), or 20MHz wide (1 channel).
l Each channel is mapped to a group depending on the maximum width supported by that channel and the
radio’s capability. The maximum width supported by a channel is determined by the channel’s membership
in regulatory domain channel pairs or groups.
n Channel 36, 40, 44, and 48 belong to 80MHz group
n Channel 165 belongs to 20MHz group
l Channel groups are visited sequentially and the primary channel is rotated after each visit.
l Group scanning behavior is performed for W-AP200 Series access points on A-band channels.
Scanning only once in each 80MHz wide group allows the AP to scan through the channel list faster and also hear
frames on sub-channels.
Configuring AP Channel Assignments
The country code in the AP Regulatory Domain profile determines supported channel and channel pairs for
that specific AP. Any changes to the country code causes the valid channel lists to be reset to the defaults for
the country.
The example in this section illustrates how to perform the following tasks for an AP group:
1. Configure the “default” regulatory domain profile to use a valid country code. (In this example, the country
code US.) This will determine the available channels.
2. Configure a 40 MHz channel (bonded pair) for the AP group’s 802.11a (5 GHz) radio profile.
3. Configure a 20 MHz channel for the AP group’s 802.11g (2.4 GHz) radio profile.
This example uses default ARM profile settings and the recommended high-throughput channel assignments for the
802.11a and 802.11b/g bands. If you want the channel assignments to utilize high-throughput, ensure that high-
throughput is enabled within the radio profile. For details, see 802.11a and 802.11g RF Management Profiles on page
544.
Using the WebUI
1. Navigate to Configuration > Wireless > AP Configuration > AP Group page.
2. Click the Edit button by the name of the AP group to which you want to assign specific channels.
3. In the Profiles list, expand the AP menu to display the AP profiles used by the AP group.
4. Select the Regulatory Domain profile named default.
5. Click the Country Code drop-down menu and select the US-United States domain if it is not already
selected.
The Regulatory Domain’s country code determines which channels are selected in the following fields:
l Valid 802.11g channel
l Valid 802.11a channel
l Valid 802.11g 40MHz channel pair
l Valid 802.11a 40MHz channel pair
l Valid 802.11a 80MHz channel group
l Valid 802.11a 160MHz channel group
If none of the channels supported by the AP have received regulatory approval by the country whose
country code you selected, the AP will revert to Air Monitor mode.
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