CHAPTER
33-1
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
OL-25340-01
33
Configuring Cisco Express Forwarding
This chapter describes Cisco Express Forwarding (CEF) on the Catalyst 4500 series switch. It also
provides guidelines, procedures, and examples to configure this feature.
This chapter includes the following major sections:
• About CEF, page 33-1
• Catalyst 4500 Series Switch Implementation of CEF, page 33-3
• CEF Configuration Restrictions, page 33-6
• Configuring CEF, page 33-6
• Monitoring and Maintaining CEF, page 33-8
Note For complete syntax and usage information for the switch commands used in this chapter, first look at
the Cisco Catalyst 4500 Series Switch Command Reference and related publications at this location:
http://www.cisco.com/en/US/products//hw/switches/ps4324/index.html
If the command is not found in the Catalyst 4500 Series Switch Command Reference, it will be found in
the larger Cisco IOS library. Refer to the Cisco IOS Command Reference and related publications at this
location:
http://www.cisco.com/en/US/products/ps6350/index.html
About CEF
This section contains information on the two primary components that comprise the CEF operation:
• CEF Features, page 33-2
• Forwarding Information Base, page 33-2
• Adjacency Tables, page 33-2
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