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Chapter 9
Monitoring Traffic
Using MRTG
MRTG (Multi Router Traffic Grapher) is a graphing tool that enables you to monitor Traffic Server’s
performance and analyze network traffic. MRTG provides a variety of graphs that show information about
virtual memory usage, client connections, document hit rates, hit and miss rates, and so on. MRTG uses five
minute intervals to formulate the statistics and provides useful historical information.
You access MRTG from the Monitor tab in Traffic Manager.
Accessing MRTG
To access MRTG:
1. Access Traffic Manager from your browser (refer to
Accessing Traffic Manager‚ on page 8
).
2. If your Traffic Server node is in a cluster, choose the Traffic Server node whose statistics you want to view
from the Dashboard on the Monitor tab.
3. On the Monitor tab, click the MRTG button.
The MRTG index page opens. The figure below shows the MRTG Index page.
Navigating MRTG
The MRTG index page shows a subset of the graphs available for display. Click on a graph to see daily,
weekly, monthly, and yearly statistics for that particular graph.
Click on the more info button to view a detailed description of the graphs.
You can also click on the daily view link at the bottom of the index page to see daily Traffic Server statistics
and on the weekly overview link to see weekly Traffic Server statistics. Clicking on these links provides a
more extensive selection of related graphs.