Sniffer® Portable Professional User's Guide - NetScout

Chapter 5
History Samples
Click to start a
sample
Click to change how the
icons display in this
window
Click to create a new
sample to collect
multiple network events
Click to set the sampling
interval, threshold values,
graph type, and colors used
in the graph
110 Sniffer Portable Professional
You can use History Samples to collect a variety of network statistics
over a period of time to establish your network performance baseline.
Baseline statistics help you set alarm thresholds to notify you when
abnormal network behavior occurs. You can also use history samples to
determine long-term network traffic trends and to help plan for future
network expansion and reorganization.
You can launch as many as 10 history sample processes concurrently.
These can be 10 different samples or multiple instances of the same
sample so that both short-term and long-term trends can be recorded
simultaneously.
The network events available for history sample monitoring vary
according to the type of adapter you have selected in the Adapter dialog
box.
IMPORTANT: History Samples average data over the sample period.
Because of this, you may miss “spikes” in sampled data due to the
averaging. It’s always a good idea to use History Samples in conjunction
with other Sniffer Portable Professional views that will help you get an
accurate view of the traffic on your network.
The sample data can be displayed in a bar chart, a line chart, or an area
chart.
Figure 5-10 shows the History Samples window for an Ethernet adapter.
Figure 5-10. The History Samples Window