9-8
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 9 Configuring Interfaces
Using Interface Configuration Mode
Using Interface Configuration Mode
The switch supports these interface types:
Physical ports—switch ports, routed ports, UNIs, NNIs, and ENIs
VLANs—switch virtual interfaces
Port-channels—EtherChannel interfaces
You can also configure a range of interfaces (see the “Configuring a Range of Interfaces” section on
page 9-9).
To configure a physical interface (port), specify the interface type, the module number, and the switch port
number, and enter interface configuration mode.
Type—Fast Ethernet (fastethernet or fa) for 10/100 Mbps Ethernet, Gigabit Ethernet
(gigabitethernet or gi) for 10/100/1000 Mbps Ethernet ports, or small form-factor pluggable (SFP)
module Gigabit Ethernet interfaces.
Module number—The module or slot number on the switch (always 0 on the Cisco ME switch).
Port number—The interface number on the switch. The port numbers always begin at 1, starting with
the leftmost port when facing the front of the switch, for example, fastethernet 0/1 or gigabitethernet
0/1. If there is more than one interface type (for example, 10/100 ports and SFP module ports), the
port numbers restart with the second interface type: gigabitethernet 0/1.
You can identify physical interfaces by physically checking the interface location on the switch. You can
also use the show privileged EXEC commands to display information about a specific interface or all
the interfaces on the switch. The remainder of this chapter primarily provides physical interface
configuration procedures.

Procedures for Configuring Interfaces

These general instructions apply to all interface configuration processes.
Step 1 Enter the configure terminal command at the privileged EXEC prompt:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
Step 2 Enter the interface global configuration command. Identify the interface type and the number of the
connector. In this example, Fast Ethernet port 1 is selected:
Switch(config)# interface fastethernet0/1
Switch(config-if)#
Note You do not need to add a space between the interface type and interface number. For example,
in the preceding line, you can specify either fastethernet 0/1, fastethernet0/1, fa 0/1, or fa0/1.
Step 3 If you are configuring a UNI or ENI, enter the no shutdown interface configuration command to enable
the interface:
Switch(config-if)# no shutdown