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User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
OL-22617-01
Chapter 3 Monitoring and Analysis
Analyzing Traffic
You can use the Zoom/Pan feature, in which you can drag the beginning or end to change the time
interval, as shown below.
The time interval change on the zoom/pan chart will affect the data presented in the charts in the bottom
of the window. The zoom/pan time interval also affects the drill-down navigations; if the zoom/pan
interval is modified, the context menu drill-downs from that dashboard will use the zoom/pan time
interval.
Note In a bar chart which you can zoom/pan, each block represents data collected during the previous interval
(the time stamp displayed at the bottom of each block is the end of the time range). Therefore, you may
have to drag the zoom/pan one block further than expected to get the desired data to populate in the charts
in the bottom of the window.
The NAM 5.0 Traffic Analyzer menu selections for Analyze > Traffic are:
• Application, page 3-9
• Host, page 3-10
• NDE Interface Traffic Analysis, page 3-11
• DSCP, page 3-12
• URL Hits, page 3-14
Application
The Application Analysis screen will show you at a glance the traffic level for a giver application over
a selected period of time. It is available under the menu option Analyze > Traffic > Application. It will
show you:
• A graph of application traffic over time
• Top hosts transmitting and receiving traffc on that application for the selected time period
• Application Configuration -- Shows the criteria by which the NAM classifies packets as that
application. This is typically a list of TCP and/or UDP ports that identify the application. Note that
some applications are identified by heuristic or other state-based algorithms.

Hosts Detail

On the “Top N Hosts - Traffic In” or “Top N Hosts - Traffic Out” chart, you can left-click a colored bar
to get the context menu, and choose “Hosts Detail” to see the All Hosts screen and the detailed
information about all hosts. Table 3-3 describes the fields on the All Hosts screen.