CHAPT ER
9-1
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
9
Configuring Interfaces
This chapter defines the types of interfaces on the Cisco ME 3400 Ethernet Access switch and describes
how to configure them.
The chapter consists of these sections:
• Understanding Interface Types, page 9-1
• Using Interface Configuration Mode, page 9-8
• Configuring Ethernet Interfaces, page 9-12
• Configuring Layer 3 Interfaces, page 9-22
• Configuring the System MTU, page 9-23
• Monitoring and Maintaining the Interfaces, page 9-26
Note For complete syntax and usage information for the commands used in this chapter, see the switch
command reference for this release and the online Cisco IOS Interface Command Reference,
Release 12.2.

Understanding Interface Types

This section describes the different types of interfaces supported by the switch with references to
chapters that contain more detailed information about configuring these interface types. The rest of the
chapter describes configuration procedures for physical interface characteristics.
These sections describe the interface types:
• UNI, NNI, and ENI Port Types, page 9-2
• Port-Based VLANs, page 9-2
• Switch Ports, page 9-3
• Routed Ports, page 9-5
• Switch Virtual Interfaces, page 9-5
• EtherChannel Port Groups, page 9-6
• Dual-Purpose Ports, page 9-6
• Connecting Interfaces, page 9-7