Users Guide

615 | Access Points Dell Networking W-Series ArubaOS 6.4.x| User Guide
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
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 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.
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.
6. Click Apply.
Using the CLI
rf radio-profile <profile>
csa
csa-count <number>
Automatic Channel and Transmit Power Selection
To allow automatic channel and transmit power selection based on the radio environment, enable Adaptive
Radio Management (ARM). Note that ARM assignments will override the static channel and power
configurations done using the radio profile. For complete information on the Adaptive Radio Management
feature, refer to
Adaptive Radio Management on page 510.