Lab 02 : Configuring Ethernet and Serial Interfaces

Topology Diagram

Objectives

• Configure a LAN Ethernet interface.

• Configure a WAN serial interface.

• Verify the interface configurations.

Task 1

• Configure the LAN Ethernet interface.

R1#configure terminal
R1(config)#interface fastEthernet 0/0
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1(config-if)#no shutdown
R1(config-if)#description LAN-INT

Task 2

• Verify the LAN interface configuration.

R1#show ip interface brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            192.168.1.1     YES manual up                    up
FastEthernet0/1            unassigned      YES unset  administratively down down
Serial1/0                  unassigned      YES unset  administratively down down
Serial1/1                  unassigned      YES unset  administratively down down
Serial1/2                  unassigned      YES unset  administratively down down
Serial1/3                  unassigned      YES unset  administratively down down
R1#

Task 3

• Configure the WAN serial interface.

R1(config)#interface s1/0
R1(config-if)#ip address 10.0.0.1 255.255.255.252
R1(config-if)#no shut
R1(config-if)#description TO-WAN

Task 4

• Configure a default route using the ISP WAN IP address as the next-hop IP address.

R1(config)#ip route 0.0.0.0 0.0.0.0 10.0.0.2

Task 5

• Verify the default route configuration.

R1#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is 10.0.0.2 to network 0.0.0.0

     10.0.0.0/30 is subnetted, 1 subnets
C       10.0.0.0 is directly connected, Serial1/0
C    192.168.1.0/24 is directly connected, FastEthernet0/0
S*   0.0.0.0/0 [1/0] via 10.0.0.2
R1#