Fi interfering devices. Unlike the ACI shown in the Interference Power chart, the ACI shown in this graph indicates the percentage of

channel time that is occupied by ACI or unavailable for Wi-Fi communication due to ACI.

The Channel Metrics graph can also show channel availability, the percentage of each channel that is available for use, or display the current relative quality of selected channels in the 2.4 GHz or 5 GHz radio bands. Spectrum monitors can display data for all channels in their selected band. Hybrid APs display data for their one monitored channel only.

In the spectrum analysis feature, channel quality is a relative measure that indicates the ability of the channel to support reliable Wi-Fi communication. Channel quality, which is represented as a percentage in this chart, is a weighted metric derived from key parameters that can affect the communication quality of a wireless channel, including noise, non-Wi-Fi (interferer) utilization and duty-cycles, and certain types of retries. Note that channel quality is not directly related to Wi-Fi channel utilization, as a higher quality channel may or may not be highly utilized.

When you hover your mouse over any bar in the chart, a tooltip displays the metric value for that individual channel. The example below shows that 61% of channel 3 is being consumed by non-Wi-Fi devices and 802.11 adjacent channel interference.

Figure 209: Channel Metrics Graph

Table 210 describes the parameters that can be displayed in the Channel Metrics graph. Click the down arrow in the upper right corner of this chart then click the Options menu to access these configuration settings. Once you have configured the desired parameters, click OK at the bottom of the Options menu to save your settings and return to the spectrum dashboards.

Table 210: Channel Metrics Options

Parameter

Band

Description

Radio band displayed in this graph.

For spectrum monitor radios using the 5 GHz radio band, click the Band drop-down list and select 5 GHz upper, 5GHz middle or 5Ghz lowerto display data for that portion of the 5 Ghz radio band. This parameter is not configurable for graphs created by hybrid APs or spectrum monitor radios that use

589 Spectrum Analysis

Dell PowerConnect W-Series ArubaOS 6.2 User Guide

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Dell 6.2 manual Channel Metrics Graph, Radio band displayed in this graph

6.2 specifications

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