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Channel Summary Table
The channel summary table provides a summarized or aggregated view of key statistics. Spectrum monitors display
spectrum analysis data seen on all channels in the selected band, and hybrid APs display data from the one channel
they are monitoring. The example in Figure 213 below shows that a spectrum monitor sees 44 Valid APs and 52%
channel utilization on channel 40 in the 5GHz radio band.
Figure 213: Channel Summary Table
Spectrum monitor radios using the 5 GHz radio band can display channels using either 20 MHz or 40 MHz channel
numbering. To toggle between these two channel numbering modes, click the down arrow in the upper right corner
of the graph titlebar then click either Show 20 MHz Channels or Show 40 MHz Channels.
Click any of the column headings to sort the information in the table by that column criteria. Make a column wider
or narrower by clicking the border of a column heading and dragging the border to a new position.
Table 214 describes the output of the Channel Summary table.
Parameter Description
Channel Radio channel being monitored by the spectrum monitor or hybrid AP
Valid APs Number of known APs seen on the network.
Not Valid APs Number of unknown or invalid APs seen on the network.
Non Wi-Fi Devices Number of Non-Wi-Fi (interfering) devices detected/classified by the spectrum
monitor
Center Freq. (GHz) Center frequency of the Wi-Fi signals sent on that radio channel.
Channel Util. (%) Percentage of the channel currently being used by devices on the network
Max AP Power (dBm) Signal strength of the AP that has the maximum signal strength on a channel.
Max Interference (dBm) Signal strength of the non-Wi-Fi device that has the highest signal strength.
SNIR (dB) The Signal-to-Noise-and-Interference Ratio (SNIR) is the ratio of signal strength to the
combined levels of interference and noise on that channel. This value is calculated by
determining the maximum noise-floor and interference-signal levels, and then
calculating how strong the desired signal is above this maximum.
Table 214:
Channel Summary Table Parameters
DellPowerConnectW-SeriesArubaOS6.2 | User Guide Spectrum Analysis | 592