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Cisco IOS in a Nutshell, 2nd Edition by James Boney

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Name

ip cef — global

Synopsis

ip cef [distributed]
no ip cef

Configures

Cisco Express Forwarding (CEF)

Default

Depends on the hardware; usually disabled

Description

This command enables CEF on the router. CEF is a Layer 3 switching technology that increases network performance for certain types of network traffic.

The optional distributed keyword enables distributed CEF (dCEF), which distributes CEF information to line cards on the router.

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