Ring Map
NOTE |
The statistics used to rank stations in
When Rate is the selected mode, Find by Highest or Lowest detects the station with the greatest or smallest rate of frames processed or errors detected within a polling interval. The following formula is used to find the station with the highest or lowest rate of frames or errors:
ΔFrames or Errors measured/Δ Time (in seconds)
For example, if one station detects 250 total errors over a 10 second poll interval (250/10
=25 errors per second), and a second station detects 170 errors over the same 10 second interval (170/10 = 17 errors per second), the first station is found to have a higher error rate than the second.
When Cumulative is selected, selecting By Highest or Lowest will display the station with the greatest or smallest number of frames or errors detected since the cumulative option was last selected.
When Delta is selected, selecting By Highest or Lowest will display the station with the greatest or smallest number of frames or errors detected during the last poll interval.
Note, too, that changing the calculation mode may change the rankings; a station that has had a high rate of traffic in recent polling intervals may or may not have processed the greatest cumulative number of packets, and so on.
To find the station by Highest or Lowest number of frames processed or errors detected:
1.Click on 
, and drag down to select By Highest or By Lowest.
2.Drag to the right to select the performance or error parameter of interest, and release.
The station experiencing the highest or lowest number of the selected parameter (according to the selected calculation mode) will be highlighted in the map, and a window will appear, displaying the MAC address, node name (if assigned), board and port index (if the station is connected to the monitored hub), and the station’s measurement of the selected parameter. See Figure
Using the Find Options |
