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User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
OL-22617-01
Chapter 2 Setting Up The NAM Traffic Analyzer
Monitoring
• URL, page 2-78
• WAAS Monitored Servers, page 2-80
Aggregation Intervals
The NAM Traffic Analyzer has short-term and long-term aggregation intervals (referred to as long-term
reporting in NAM 4.x). In NAM Traffic Analyzer Release 5.0, the aggregated data will be displayed in
the dashboards if the query is longer than one day.
The purpose of gathering short term aggregation interval data is for troubleshooting. It has a finer
granularity than long term data (by default, the short term aggregation interval for Traffic/Media is one
minute, and short term response time interval is five minutes).
The purpose of gathering long term interval data is for trending analysis. The smallest aggregation
interval for long term data is one hour (60 minutes).
Caution If you modify the aggregation intervals, existing collected data that is not in the same aggregation
interval will be completely removed. Data will then start being collected from the beginning again at the
moment the intervals are modified and applied.
Traffic and Media refer to applications, hosts, RTP streams, and voice calls monitoring. Response Time
refers only to application response time. The NAM does not support long term aggregations of data for
the following media: conversations, RTP streams, and voice signaling calls monitoring.
To set up aggregation intervals:
Step 1 Choose Setup > Monitoring > Aggregation Intervals.
Step 2 Choose the desired durations for Short Term Interval and Long Term Interval.
Step 3 Check the “Collect only hosts from user-defined sites (exclude hosts from Unassigned site)” check box
if you want the NAM long term data to only contain information for hosts classified to the user-defined
sites. This check box only applies to the long term data; short term will always collects all hosts.
Note Enabling the “Collect only hosts from user-define sites” option can significantly speed up report
queries, because it excludes unclassified hosts’ statistics from the database.
When you first start the NAM Traffic Analyzer, in monitoring screens that show site information, you
will see a site named “Unassigned” and with a description of “Unclassified Hosts.” The Unassigned site
includes any that do not match the site configurations. By default, long-term storage will include data
for all sites, including the Unassigned”de site. In some cases, you may not want to view long term data
of hosts that are not in your network, in which case you would check the check box.
Step 4 Click Submit.