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126 | Discovering, Adding, and Managing Devices Dell PowerConnect W AirWave 7.2 | User Guide
Figure 84 ARM Events Table Illustration
Active Interfering Devices Table
For Dell APs running in Spectrum mode, the same non-802.11 interfering devices identified in the Issues
Summary section are classified in the Active Interfering Devices table along with the timestamp of its last
detection, the start and end channels of the interference, the signal to noise ratio, and the percentage of time the
interference takes place, as illustrated in Figure 85. This table can be exported to CSV format, and the displayed
columns can be moved or hidden as needed.
Figure 85 Active Interfering Devices Table Illustration
Possible device types for the Active Interfering Devices table are:
Wi-Fi
Microwave
Bluetooth
Generic Fixed Freq
Table 80 ARM Events table Columns and Values
Column Description
Time The time of the ARM event.
Trap Type The type of trap that delivered the change information. Current ARM trap types that display in AWMS
are:
Power Change
Mode Change
Channel Change
Values that display in the following columns depend on the Trap Type.
Previous Tx Power Old value for transmit power before the Power Change event took place.
Current Tx Power New transmit power value after the change.
Previous Radio Mode Old value for radio mode before the Mode Change event took place.
Current Radio Mode New radio mode value after the change.
Previous Channel Old primary channel value before the Channel Change event took place.
Current Channel New primary channel value after the change.
Previous Secondary
Channel
Old secondary channel value (for 40Mhz channels on 802.11n devices) before the Channel Change
event took place.
Current Secondary
Channel
New secondary channel value after the change.
Change Reason If the noise and interference cause for the change can be determined, they will be displayed here.
Mode change reasons are not yet tracked.
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