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436 | AccessPoints(APs) DellPowerConnectW-SeriesArubaOS6.2 | User Guide
The Regulatory Domain’s country code determines which channels are selected in the Valid 802.11g channel,
Valid 802.11a channel, Valid 802.11g 40MHz channel pair and Valid 802.11a 40MHz channel pair fields. 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.
6. Click Apply.
7. Under the Profiles list, expand the RF Managementmenu.
8. Select the 802.11a radio profileused by the AP group
9. Enter 36 in the Channel text field and select the Above radio button. In this instance, channel 36 becomes the
primary channel and the secondary channel is 40.
10. Click Apply.
11. Under the Profiles list select the 802.11g radio profileused by the AP group.
12. Enter 1 in the Channel text field and select the None radio button. In this instance, channel 1 is the assigned 20
MHz channel and 40 MHz mode is disabled and click Apply.
Using the CLI
Country codes are generally specified in ISO 3166 format. To see what channels are available for a given country
code, use the show ap allowed-channels <country-code> command can be used.
ap regulatory-domain-profile default
country-code US
rf dot11a-radio-profile ht-corpnet-a
channel 36+
rf dot11g-radio-profile ht-corpnet-g
channel 1
NOTE: Country codes are generally specified in ISO 3166 format. To see what channels are available for a given country code, use
the show ap allowed-channels country-code <country-code> command.
Channel Switch Announcement (CSA)
When an AP changes its channel, an existing wireless clients may “time out” while waiting to receive a new beacon
from the AP; the client must begin scanning to discover the new channel on which the AP is operating. If the
disruption is long enough, the client may need to reassociate, reauthenticate, and re-request an IP address. Channel
Switch Announcement (CSA), as defined by IEEE 802.11h, enables an AP to announce that it is switching to a new
channel before it begins transmitting on that channel. This allows the clients, who support CSA, to transition to the
new channel with minimal downtime.
When CSA is enabled, the AP does not change to a new channel immediately. Instead, it sends a number of beacons
(the default is 4) which contain the CSA announcement before it switches to the new channel. You can configure
the number of announcements sent before the change.
NOTE: Clients must support CSA in order to track the channel change without experiencing disruption.
Using the WebUI
1. Navigate to the Configuration > Wireless > AP Configuration page.
2. Select either the AP Group or AP Specific tab. Click Edit for the AP group or AP name.
3. Select RF Management in the Profile list.
4. Select the 802.11a or 802.11g radio profile.
5. Select Enable CSA. You can configure a different value for CSA Count.