Sniffer® Portable Professional User's Guide - NetScout

Postcapture Expert Display
Displaying Captured Data
The postcapture display’s Expert tab provides you with the same Expert
analysis features available in the Expert window during real-time
capture. It shows you the network objects, symptoms, and diagnoses
detected by the Expert based on the packets in the capture buffer or
trace file. Symptoms and Diagnoses are Expert indications of possible
network problems. You can navigate through the various panes of the
real-time Expert window to look at items of interest.
IMPORTANT: The real-time Expert window is described in Real-Time
Expert Display on page 131.
The Expert tab is organized in the same way as the real-time Expert
window described in Real-Time Expert Display on page 131. Expert
analysis results are shown in five viewing panes – Expert overview,
Expert summary, protocol statistics, detail tree, and Expert detail
(Figure 8-1 on page 158). These panes function together to provide
Expert analysis at different network layers, as follows:
The Expert Overview pane shows network analysis layers (similar
in concept to the ISO layers) and the Expert overview statistics
(objects, symptoms, or diagnoses) for each layer. By selecting a
combination of layer and statistic type, you control the display of
Expert analysis data in the other Expert panes.
Tip: You can configure the Expert Overview to be wide or narrow
by clicking on the arrow icon at the upper right-hand corner of the
pane.
The Expert Summary pane shows key summary information for
the layer and statistic selected in the Expert Overview pane. The
column headings for the Expert Summary display will change,
depending on what layer and statistic you have selected.
The Protocol Statistics pane displays the amount of traffic (in
frames and bytes) for each protocol encountered for the layer you
selected in the Expert Overview pane. (This pane is not displayed
when the Expert Overview pane is narrow.)
The Detail Tree pane shows a hierarchical listing of all layers at or
below those selected in the Expert Overview and Expert Summary
panes. You can expand or collapse each layer in a manner similar
to Windows Explorer. Click on any item in the Detail Tree to display
its Expert detail data.
User’s Guide 161