Cisco Catalyst 3850 Configuration Guide

C O N T E N T S
Cisco Express Forwarding
1
Finding Feature Information 1
Information About CEF 1
Cisco Platform Support for CEF and dCEF 2
CEF Benefits 2
Media Supported by CEF 3
Main Components of CEF 4
FIB Overview 4
CEF FIB and Load Balancing 4
CEF Adjacency Tables Overview 4
Adjacency Discovery 5
Adjacency Types That Require Special Handling 5
Unresolved Adjacency 6
Central CEF Mode Operation 6
Distributed CEF Mode Operation 6
CEF Features Enabled by Default 7
CEF Distributed Tunnel Switching 8
Links for the CEF Features 8
How to Configure CEF 8
Configuration Examples for CEF 9
Additional References 9
Feature Information for Cisco Express Forwarding 10
IP Switching Cisco Express Forwarding Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches)
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Cisco Catalyst 3850 Specifications

General

Stacking Bandwidth	480 Gbps
Max Stacking Units	9
Form Factor	Rack-mountable
RAM	4 GB
Flash Memory	4 GB
Operating System	Cisco IOS XE
Model	Catalyst 3850
Ports	24 or 48 Gigabit Ethernet ports
Uplink Interfaces	4 x 1GE, 2 x 10GE, or 4 x 10GE
Power Supply	Redundant power supplies
Dimensions	44.5 x 44.8 x 4.45 cm
Weight	7.6 kg
Features	IPv6
Power over Ethernet (PoE)	PoE, PoE+, UPOE (varies by model)
Operating Temperature	0 to 40°C