Sniffer® Portable Professional User's Guide - NetScout

Chapter 5
Global Statistics
116 Sniffer Portable Professional
Global Statistics help you understand the overall activity levels in the
network and pinpoint large- and small-size packet traffic loads, each of
which can have a different effect on overall network performance and
availability.
Global statistics provides various tabs with statistical measures
pertinent to network traffic analysis:
The Size Distribution tab shows the frequency of each packet size
as a percentage of all monitored traffic.
The Utilization Distribution tab shows network bandwidth
consumption distributed among each 10% grouping – 1-10%, 11%
-20%, ..., 91%-100%.
The Topology Surfing tab (Wireless LAN adapters only) presents
a quick snapshot of network activity on all wireless network
topology/channel combinations selected for monitoring in Tools >
Wireless > Surf Settings. Each channel is listed in the display
with the same sets of statistics, enabling you to see at a glance
what is happening on each channel.
See The Global Statistics > Topology Surfing Tab on page 117 for
more information on this tab.
NOTE: See Configuring Surf Settings on page 54 for information
on selecting wireless channels for surfing.
You can view the Size Distribution and Utilization Distribution tabs in a
table or as a bar or pie chart. Figure 5-15 shows a sample packet size
distribution graph for an Ethernet adapter.