24-8
Software Configuration Guide—Release 12.2(25)EW
OL-6696-01
Chapter 24 Configuring Cisco Express Forwarding
Monitoring and Maintaining CEF
For more information on load sharing, refer to the Configuring Cisco Express Forwarding module of the
Cisco IOS documentation at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fwitch_c/swprt1/
xcfcefc.htm
Note The include-ports option does not apply to software-switched traffic on the Catalyst 4500 series
switches.
Viewing CEF Information
You can view the collected CEF information. To view CEF information, perform this task:
Monitoring and Maintaining CEF
To display information about IP traffic, perform this task:
This example shows how to display information about IP unicast traffic on interface Fast Ethernet 3/3:
Switch# show interface fastethernet 3/3 | begin L3
L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 12 pkt, 778 bytes mcast
L3 out Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes
4046399 packets input, 349370039 bytes, 0 no buffer
Received 3795255 broadcasts, 2 runts, 0 giants, 0 throttles
<...output truncated...>
Switch#
Note The IP unicast packet count is updated approximately every five seconds.
Displaying IP Statistics
IP unicast statistics are gathered on a per-interface basis. To display IP statistics, perform this task:
Command Purpose
Switch# show ip cef
Displays the collected CEF information.
Command Purpose
Switch# show interface
type slot
/
interface
| begin L3
Displays a summary of IP unicast traffic.
Command Purpose
Switch# show interface
type number
counters detail
Displays IP statistics.
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