Enables Top Talkers statistics for most active traffic flows. A traffic flow consists of data sent and received from a single source IP address and port number to a single destination IP address and port number over the same protocol.

A traffic flow consists of data sent and received from a single source IP address and port number to a single destination IP address and port number over the same protocol. The most active, heaviest users of WAN bandwidth are called the Top Talkers. A flow collector identifies the top consumers of the available WAN capacity (the top 50 by default) and displays them in the Top Talkers report. Collecting statistics on the Top Talkers provides visibility into WAN traffic without applying an in-path rule to enable a WAN visibility mode.

You can analyze the Top Talkers for accounting, security, troubleshooting, and capacity planning purposes. You can also export the complete list in CSV format.

The collector gathers statistics on the Top Talkers based on the proportion of WAN bandwidth consumed by the top hosts, applications, and host and application pair conversations. The statistics track pass-through or optimized traffic, or both. Data includes TCP or UDP traffic, or both (configurable on the Top Talkers report page).

You must enable Flow Export before you enable Top Talkers.

A NetFlow collector is not required for this feature.

Enabling Top Talkers automatically sets the Active Flow Timeout to 60 seconds.

You must enable Netflow Export (ip flow-export enable) before you enable Top Talkers.

Enabling Top Talkers automatically sets the Active Flow Timeout (ip flow-setting active_to) to 60 seconds.

The no command option disables this feature.

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