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| WLAN Analyzer and Protocol Decoder - CommView for WiFi |
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This tab displays per-channel statistics for all the channels that have been or are being monitored. The number of channels shown in this table depends on the way you use CommView for WiFi. Normally, when you monitor only one channel used by your WLAN, the table will contain data on the selected channel only, because the radio used in a wireless adapter can receive data only on one channel at a time. Once you've selected a different channel for monitoring, another channel will be added to the table. Alternatively, if you use the Scanner to sweep through the channels and the Show data in main window while scanning box in the Scanner options is checked, the table will contain data on all the scanned channels for which at least one packet has been captured. This is sometimes a convenient method of surveying a site. 
Because the 802.11b/g standard uses overlapping channel frequencies, you may notice that even if your WLAN is configured to use only one channel, e.g. 6, you will still see non-zero values for the adjacent channels. Unlike 802.11b/g channels, 802.11a channels don't overlap. The 802.11n standard uses either the 802.11b/g band (2.4 GHz) or the 802.11a band (5 GHz). Channel – the channel number. Packets – the total number of packets transmitted (Data + Management + Control). Data – the number of Data packets transmitted. Mngt – the number of Management packets transmitted. Ctrl – the number of Control packets transmitted. Signal – signal level in the min/average/max format. The average value is calculated since the data in this table was last reset. Please refer to the Understanding Signal Strength chapter for more information. Noise – noise level in the min/average/max format. The average value is calculated since the data in this table was last reset. Noise information may not be available from all adapters. If your adapter doesn't support it, this column will not be visible. Rate – data transfer rate in the min/average/max format. The average value is calculated since the data in this table was last reset. Encryption – the number of Data packets for which the encryption flag was set. Retry – the number of packets where the Retry flag was set. ICV Errors – the number of packets with ICV errors. See Understanding CRC and ICV Errors for a detailed explanation. CRC Errors – the number of packets with CRC errors. See Understanding CRC and ICV Errors for a detailed explanation. You can show or hide individual columns by right-clicking on list header or using the View => Channels Columns menu. The column order can be changed by dragging the column header to a new location. Menu Commands Right-clicking on the IP Statistics list brings up a menu with the following commands: Save Channels As – allows you to save the contents of the Channels tab as an HTML report. Clear Channels – clears the table. More Statistics – shows a window with data transfer and protocol distribution statistics. |
