Configuring Cisco Express Forwarding - Cisco Catalyst 4500 series Administration Manual

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:
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For complete syntax and usage information for the switch commands used in this chapter, see the Cisco
Note
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 a command is not in the Catalyst 4500 Series Switch Command Reference, you can locate it in the
Cisco IOS library. See 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:
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CEF Features
CEF is advanced Layer 3 IP switching technology that optimizes performance and scalability for large
networks with dynamic traffic patterns or networks with intensive web-based applications and
interactive sessions.
OL_28731-01
About CEF, page 35-1
Catalyst 4500 Series Switch Implementation of CEF, page 35-3
CEF Configuration Restrictions, page 35-6
Configuring CEF, page 35-6
Monitoring and Maintaining CEF, page 35-8
CEF Features, page 35-1
Forwarding Information Base, page 35-2
Adjacency Tables, page 35-2
C H A P T E R
Software Configuration Guide—Release IOS XE 3.5.0E and IOS 15.2(1)E
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35-1