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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter9 Configuring Interface Cha rac teristics Using Interface Configuration Mode
When the metro IP access image is running on the switch, routing can be enabled on the switch.
Whenever possible, to maintain high performance, forwarding is done by the switch hard ware. However,
only IP Version 4 packets with Ether net II en capsula tion can b e route d in hardw are. Th e routin g funct ion
can be enabled on all SVIs and routed ports. The switch routes on ly IP traffic. When IP routing protocol
parameters and address configuration are added to an SVI or r oute d po rt, any IP traffic rece ived from
these ports is routed. For more information, see Chapter32, “Co nfiguring I P U nic ast Rou ting, ”
Chapter 34, “Configuring IP Multicast Routing,” and Chapter 35, “Configuring M SD P.”
Using Interface Configuration Mode
The switch supports these interface types:
•Physical ports—switch ports, routed ports, UNIs, and NNIs
•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 9-8).
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 Etherne t
(gigabitethernet or gi) for 10/100/1000 Mbps Ethernet ports, or small form- facto r plug gab le (SFP)
module Gigabit Ethernet interfaces.
•Module number—The module or slot number on the switch (always 0 on the Cisc o ME swi tch ).
•Port number—The interface number on the switch. The port numbers always begin at 1, starting w ith
the leftmost port when facing the front of the switch, for example, fastethernet 0/1 or gigabi tethernet
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.
Step1 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)#
Step2 Enter the interface global configuration command. Identify the inte rfac e t yp e an d t he num be r of t he
connector. In this example, Fast Ethernet port 1 is selected:
Switch(config)# interface fastethernet0/1
Switch(config-if)#