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Software Configuration Guide for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
OL-1957-03
Chapter 3
Configuring with the Command-Line Interface
Configuring Fast Ethernet Interfaces
Before you begin configuring the Ethernet interface, make sure you:
•
Connect a console to the router.
•
Power on the router.
Configuring Fast Ethernet Interfaces
To configure a Fast Ethernet interface, use the configuration software provided with your router or
network module, if any. Otherwise, for greatest power and flexibility use configuration mode (manual
configuration). In this mode, you enter Cisco IOS commands at the router prompt.
Note
Before you begin, disconnect all WAN cables from the router to keep it from trying to run the
AutoInstall process. The router tries to run AutoInstall whenever you power it on if there is a WAN
connection on both ends and the router does not have a valid configuration file stored in NVRAM
(for instance, when you add a new interface). It can take several minutes for the router to determine
that AutoInstall is not connected to a remote Transmission Control Protocol/Internet Protocol
(TCP/IP) host.
Command
Purpose
Step 1
Router> enable
Password: password
Router#
Enter enable mode. Enter the password.
You have entered enable mode when the prompt
changes to
Router#
.
Step 2
Router# configure terminal
Enter configuration commands, one per line.
End with CNTL/Z.
Router(config)#
Enter global configuration mode. You have
entered global configuration mode when the
prompt changes to
Router(config)#.
Step 3
Router# ip routing
Router# appletalk routing
Router# ipx routing
Enable routing protocols as required for your
global configuration. This example uses IP
routing, AppleTalk routing, and Internetwork
Packet Exchange (IPX) routing.
Step 4
Router(config)# interface ethernet 0/0
Router(config-if)#
Enter the interface configuration mode. You have
entered interface configuration mode when the
prompt changes to
Router(config-if)#.
Step 5
Router(config-if)# ip address 172.16.74.3
255.255.255.0
Assign the IP address and subnet mask to the
interface.
Step 6
Router(config-if)# appletalk static
cable-range 3-3
Router(config-if)# appletalk zone ZZEth
Router(config-if)# ipx network B005
Configure routing protocols on the interface. You
must have previously enabled these protocols as
part of global configuration. In this example,
AppleTalk and IPX are being configured on the
interface.
Step 7
Router(config-if)# exit
Exit back to global configuration mode.
Repeat Step 4 through Step 6 if your router has
more that one LAN interface that you need to
configure.
Step 8
Router(config)# Ctrl-z
Router#
When you finish configuring interfaces, return to
enable mode.