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Cisco Express Forwarding; Finding Feature Information; Information About Cef - Cisco Catalyst 3850 Configuration Manual

Ip switching cisco express forwarding
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Cisco Express Forwarding

This module contains an overview of the Cisco Express Forwarding feature. Cisco Express Forwarding is
an advanced Layer 3 IP switching technology. It optimizes network performance and scalability for all
kinds of networks: those that carry small amounts of traffic and those that carry large amounts of traffic in
complex patterns, such as the Internet and networks characterized by intensive web-based applications or
interactive sessions.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats
and feature information, see
To find information about the features documented in this module, and to see a list of the releases in which
each feature is supported, see the feature information table at the end of this module.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Information About CEF

Finding Feature Information, page 1
Information About CEF, page 1
How to Configure CEF, page 8
Configuration Examples for CEF, page 9
Additional References, page 9
Feature Information for Cisco Express Forwarding, page 10
Bug Search Tool
Cisco Platform Support for CEF and dCEF, page 2
CEF Benefits, page 2
Media Supported by CEF, page 3
Main Components of CEF, page 4
FIB Overview, page 4
CEF Adjacency Tables Overview, page 4
Central CEF Mode Operation, page 6
Distributed CEF Mode Operation, page 6
CEF Features Enabled by Default, page 7
Links for the CEF Features, page 8
IP Switching Cisco Express Forwarding Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches)
and the release notes for your platform and software release.
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