2-50
User Guide for the Cisco Network Analysis Module (NAM) Traffic Analyzer, 5.0
OL-22617-01
Chapter 2 Setting Up The NAM Traffic Analyzer
Data Export
NetFlow collects traffic statistics by monitoring packets that flow through the device and storing the
statistics in the NetFlow table. NDE converts the NetFlow table statistics into records, and exports the
records to an external device, which is called a NetFlow collector. The NAM sends out NDE packets only
in NDE v9 format.
There are currently six record types (or templates) that NAM exports (four in Core Stats, one in ART):
• Application
• Host
• Client Server Response Time
• Application Conversations
• Network Conversations
• RTP Metrics
The NDE data is exported in a fixed selection of aggregated data records that are shipped with the
product. This part of the NDE descriptor defines what is to be exported:
• Record Type
• Period (in minutes)
• NetFlow options selector
After you select the Record Type, you will make selections for Filters. The purpose of the Filter is to
restrict the set of exported records to the subset matching the filter's conditions;
• Depending on which fields are contained in the specified record type, the filter can specify
conditions on site, application (whenever applicable), and host (or server, or client, depending on
record type)
• The semantics of multiple conditions is conjunctive; for example, if filter specifies “siteA” and
“app1,” then the values in exported records will have to match both “siteA” and “app1.”
• Filter specification is optional, and by default all fields can be assumed as having value of Any
• The host (if applicable, or server, or client, depending on record type) allows multiple values to be
selected. If multiple values are specified, for example “host1, host2”, then the NAM assumes “host1
or host2.”
The following sections describe setting up NetFlow Data Export:
• Viewing Configured NetFlow Exports, page 2-50
• Configuring NetFlow Data Export, page 2-51
• Editing NetFlow Data Export, page 2-53
Viewing Configured NetFlow Exports
Step 1 Choose Setup > Data Export > NetFlow.
Step 2 The NetFlow Exports screen appears (shown in Figure 2-6).