Technical data

Cisco 1604 Configuration 3-7
Step 3—Configuring the Ethernet Interface
!
username joe-admin password 7 <removed>
!
interface Ethernet0
no ip address
shutdown
!
interface Serial0
no ip address
shutdown
!
interface BRI0
no ip address
shutdown
!
ip classless
!
!
line con 0
line vty 0 4
!
Step 3—Configuring the Ethernet Interface
Assign an IP address to the Ethernet interface. Test the interface by pinging it from a PC on the LAN.
Configure
To configure the Ethernet interface, use the following commands beginning in global configuration
mode:
Verify
To verify the configuration:
• Enter the show ip interface brief command, which allows you to quickly check the status of all
router interfaces.
The field “administratively down” means that the interface is configured with the shutdown
command. To bring the interface up, you must enter the no shutdown command. The Status
column refers to the ability to physically connect the network at layer 1 (needed for getting
clocks and carrier signals). The Protocol column refers to the ability to see traffic flow, which
typically occurs at the data link layer. For example, the Ethernet interface sends a loopback
Ethernet packet out to itself via the Ethernet LAN.
robo-austin# show ip interface brief
Interface IP-Address OK? Method Status Protocol
BRI0 unassigned YES unset administratively down down
BRI0:1 unassigned YES unset administratively down down
BRI0:2 unassigned YES unset administratively down down
Step Command Purpose
1
robo-austin(config)# interface ethernet 0
robo-austin(config-if)# ip address 10.1.4.1 255.255.255.0
Configure the IP address and subnet mask on
the Ethernet interface.
2
robo-austin(config-if)# no shutdown
Bring up the interface
1
.
1. This command changes the state of the interface from administratively down to up.