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40-13

Software Configuration Guide—Release 12.2(25)EW

OL-6696-01

Chapter 40 Configuring NetFlow Statistics Collection

NetFlow Configuration Examples

This section provides the following basic configuration examples:

• Sample NetFlow Enabling Schemes, page 40-13

• Sample NetFlow Aggregation Configurations, page 40-13

• Sample NetFlow Minimum Prefix Mask Router-Based Aggregation Schemes, page 40-14

Sample NetFlow Enabling Schemes

Note Enabling NetFlow on a per interface basis is not supported on a Catalyst 4500 switch.

This example shows how to enable NetFlow globally:

Switch# configure terminal

Switch(config)# ip flow ingress

This example shows how to enable NetFlow with support for inferred fields:

Switch# configure terminal

Switch(config)# ip flow ingress infer-fields

Sample NetFlow Aggregation Configurations

This section provides the following aggregation cache configuration examples:

• Autonomous System Configuration, page 40-13

• Destination Prefix Configuration, page 40-14

• Prefix Configuration, page 40-14

• Protocol Port Configuration, page 40-14

• Source Prefix Configuration, page 40-14

Autonomous System Configuration

This example shows how to configure an autonomous system aggregation cache with an inactive timeout

of 200 seconds, a cache active timeout of 45 minutes, an export destination IP address of 10.42.42.1, and

a destination port of 9992:

Switch(config)# ip flow-aggregation cache as

Switch(config-flow-cache)# cache timeout inactive 200

Switch(config-flow-cache)# cache timeout active 45

Switch(config-flow-cache)# export destination 10.42.42.1 9992

Switch(config-flow-cache)# enabled

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