Configuring Network Accounting for CEF

You might want to collect statistics to better understand CEF patterns in your network. For example, you might want to collect information such as the number of packets and bytes switched to a destination or the number of packets switched through a destination.

You can configure network accounting for CEF by performing these optional tasks:

• Enabling Network Accounting for CEF

• Viewing Network Accounting Information

Enabling Network Accounting for CEF

To collect network accounting information for CEF, use the following commands in global configuration mode:

Command	Purpose
ip cef accounting per-prefix	Enables the collection of the number of packets and bytes express forwarded to a destination (or prefix).
ip cef accounting non-recursive	Enables the collection of the number of packets express forwarded through a destination.

When you enable network accounting for CEF from global configuration mode, accounting information is collected at the route processor when CEF mode is enabled. When network accounting is enabled for dCEF, information is collected at the line cards.

Viewing Network Accounting Information

You can view the collected accounting information. To do so, use the following command in EXEC mode:

Command	Purpose
show ip cef	Displays the collected accounting information.