Ipswitch WhatsUp Gold User Guide - Ipswitch Documentation Server

Ipswitch WhatsUp Gold User Guide
TCP flags
Routing information
Where traditional NetFlow provided a strict definition of which fields in a record are key field,
used to define a flow, Flexible NetFlow allows you to define a flow based on the fields and
data you want to monitor, which allows for the ability to export only the data needed by the
collector to conduct its analysis and reporting. Additionally, there is more data available in
Flexible NetFlow than in traditional NetFlow which allows for extensive customization and
flexibility in defining flow records.
Flexible NetFlow and Network Based Application Recognition
(NBAR)
Through this definition of flows, it is possible to gather information that can be used by Cisco
Network Based Application Recognition (NBAR) to identify application data within a flow and
provide flow statistics on the application traffic.
Configuring Flexible NetFlow on a Cisco device
Flexible NetFlow can be used to support the implementation of Cisco Network Based
Application Recognition (NBAR) technology.
To configure a network device to utilize Flexible NetFlow, perform the following tasks:
Create a flow monitor.
Define the flow record.
Create a flow exporter.
These tasks are described in the following sections, using an example configuration to
illustrate how to complete the tasks from the Cisco IOS command line interface (CLI).
Important: The network device you want to configure must be running a Cisco IOS release
that supports Cisco IOS Flexible NetFlow.
Creating a flow monitor
The following example illustrates how to configure a Flexible NetFlow enabled device to
utilize Flexible NetFlow in support of NBAR and Flow Monitor application monitoring. For
more information see the Cisco IOS Flexible NetFlow configuration guide
(http://www.cisco.com/en/US/docs/ios/fnetflow/configuration/guide/get_start_cfg_fnflow.h
tml#wp1056535).
To create a flow monitor:
1 Enter the privileged EXEC mode, and then enter the global configuration mode.
Router> enable
Router# configure terminal
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