Cisco Catalyst 2960 Series, Configuration Manual

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NetFlow Lite and Stacking
The switch supports NetFlow Lite running on a mixed stack configuration, where both Catalyst 2960-X and
Catalyst 2960-S switches reside in the same stack. But in such a mixed stack configuration, the master switch
must always be a Catalyst 2960-X switch. The Catalyst 2960-S switch must never be the master switch in
this type of mixed stack configuration.
Default Settings
The following table lists the NetFlow Lite default settings for the switch.
Table 55: Default NetFlow Lite Settings
Default Setting
1800 seconds
The default value for this setting may be too
high for your specific NetFlow Lite
configuration. You may want to consider
changing it to a lower value of 180 or 300
seconds.
Note
Flow active timeout
Enabled, 30 seconds Flow timeout inactive
1800 seconds Flow update timeout
16640 bits Default cache size
How to Configure NetFlow Lite
To configure NetFlow Lite, follow these general steps:
1 Create a flow record by specifying keys and non-key fields to the flow.
2 Create an optional flow exporter by specifying the protocol and transport destination port, destination,
and other parameters.
3 Create a flow monitor based on the flow record and flow exporter.
4 Create an optional sampler.
5 Apply the flow monitor to a Layer 2 port, Layer 3 port, or VLAN.
Creating a Flow Record
You can create a flow record and add keys to match on and fields to collect in the flow.
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
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How to Configure NetFlow Lite