Cisco Cisco 5520 Wireless Controller Hoja De Datos
Wireless CleanAir Deployment Guide
Smart Business Architecture
Configuring the Cisco Wireless Solution for CleanAir
The Wireless LAN controller with the Cisco AIR-CAP3500 access points con-
nected is immediately CleanAir-capable. The Wireless LAN controller can give you
immediate information about your environment. Where the WCS takes a network
view, the WLC displays only the data retrieved from the locally connected
CleanAir access points.
nected is immediately CleanAir-capable. The Wireless LAN controller can give you
immediate information about your environment. Where the WCS takes a network
view, the WLC displays only the data retrieved from the locally connected
CleanAir access points.
With the Cisco Wireless Control System in the network, all management can
be handled at the Cisco WCS. Management can be done at each controller, but
we do not recommend this. With the CleanAir access point operating from the
wireless LAN Controller, we log into the Cisco Wireless Control System and con-
figure our controller to support CleanAir.
be handled at the Cisco WCS. Management can be done at each controller, but
we do not recommend this. With the CleanAir access point operating from the
wireless LAN Controller, we log into the Cisco Wireless Control System and con-
figure our controller to support CleanAir.
Event-Driven Radio Resource Management (EDRRM)
Event-Driven RRM is a feature that allows an access point that is in distress to
bypass normal RRM intervals and immediately change channels. A CleanAir
access point always monitors AirQuality (AQ), and reports on AQ in 15 second
intervals. AirQuality is a better metric than relying on normal Wi-Fi chip noise
measurements because AQ only reports on classified interference devices.
That makes AQ a reliable metric in that we know what is reported is not because
of Wi-Fi energy (and hence is not a transient normal spike).
Event-Driven RRM is a feature that allows an access point that is in distress to
bypass normal RRM intervals and immediately change channels. A CleanAir
access point always monitors AirQuality (AQ), and reports on AQ in 15 second
intervals. AirQuality is a better metric than relying on normal Wi-Fi chip noise
measurements because AQ only reports on classified interference devices.
That makes AQ a reliable metric in that we know what is reported is not because
of Wi-Fi energy (and hence is not a transient normal spike).
The key benefit of the EDRRM feature is very fast action time (30 seconds). If an
interferer is operating on an active channel and is causing enough AQ degrada-
tion that it triggers EDRRM, then no clients will be able to use that access point
or channel. The only thing to do is get the access point off that channel. The
EDRRM feature is not enabled by default and must be enabled. This process has
two steps: enable CleanAir and then enable Event-Driven RRM.
interferer is operating on an active channel and is causing enough AQ degrada-
tion that it triggers EDRRM, then no clients will be able to use that access point
or channel. The only thing to do is get the access point off that channel. The
EDRRM feature is not enabled by default and must be enabled. This process has
two steps: enable CleanAir and then enable Event-Driven RRM.
Step 1:
Log in to Cisco WCS.
Step 2:
Navigate to Configure > Controllers.
Figure 30.
Configure Controllers
Step 3:
Select your Wireless LAN Controller.
Figure 31.
Select HQ-WLC
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