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Searching for microbursts
244 GigaStor (23 Feb 2018) — Archive/Non-authoritative version
Using the Microburst Analysis tab in the GigaStor Control
Panel
To search for microbursts across a large time frame (greater than 15 minutes) you
must use the Microburst Analysis tab.
The Microburst Analysis tab shows you the number of microbursts Observer
found in the time frame you selected. You can see exactly when the microburst
occurred, how many bytes where in the burst, and the network utilization when
the burst occurred.
When you select a microburst, you can choose to see that slice of time on the
Detail Chart or you can view the packet in the Decode pane.
You can select the Microburst Analysis Graph tab and see the found microbursts
on a graph.
1.
Select a probe instance.
3.
Click the
Microburst Analysis tab
.
4.
Highlight the data in the Detail Chart you want to analyze for microbursts
and click Analyze. The GigaStor Analysis Options screen opens.
5.
Choose whether you want any filters and select Microburst analysis in the
Analysis Type section.
6.
Define what a microburst is for your network and click
OK
. The results appear
in the Microburst Analysis tab. For details, see Duration, Utilization threshold,
and Full duplex. It may take a moment for the GigaStor Control Panel to
process the data and display the results.
Using the Detail Chart only
The longest time frame that can be analyzed with the Detail Chart method is 15
minutes. You may be better off using the Microburst Analysis tab instead.
See
Using the Microburst Analysis tab in the GigaStor Control Panel (page 244)
.
Tip!
Microburst analysis is easier to comprehend using bars instead of
lines on the Detail Chart. Choose Settings > Detailed Chart and change the
appearance to 2D Columns. Depending on your preferences, at times you
may also wish to change the Y-axis scale to 100 when you are viewing the
chart as Percent of duration Intervals with Microbursts.
Note:
When you change between the Percent and Number charts, the
bars may not appear to change. If you look closely, you will notice that the
numbers on the vertical axis change as does the title of the chart.
To enable microburst analysis and define what on your network qualifies as a
microburst:
2.
Click the Screen resolution box, which opens the Microburst Analysis options.
3.
Select Enable Microburst Analysis and choose your settings. When you make
changes to these options, the Detail Chart changes. Sometimes it is a very
subtle change. All of these options are interrelated. By changing any
one
of
these settings, you change what is determined to be a microburst. When that
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