Lab 5.2.3 Configuring RIPv2 with VLSM, and Default Route Propagation

Step 1: Connect the equipment.

a. Connect Router3 to Router1 and Router2 with serial cables.

b. Connect Router1’s Fa0/0 interface with a straight-through cable to Switch1’s Fa0/1 interface.

c. Connect Router2’s Fa0/0 interface with a straight-through cable to Switch2’s Fa0/1 interface

d. Connect PC1 to Switch1 and PC2 to Switch 2 with straight-through cables.

e. Connect PC3 to Router3’s Fa0/0 interface with a crossover cable.

f. Connect a PC with a console cable to perform configurations on the routers and switches.

Step 2: Perform basic configurations on the routers.

a. Establish a console session with Router1 and configure hostname, passwords, and interfaces as

described in the table. Save the configuration.

b. Establish a console session with Router2 and perform a similar configuration, using the addresses

and other information from the table. Save the configuration.

c. Establish a console session with Router3. Configure hostname, passwords, and interfaces according

to the table. Note that both serials are DCE on this router. Save the configuration.

Step 3: Perform basic configurations on the switches.

a. Establish a console session with Switch1 and configure hostname and passwords according to the

table. Save the configuration.

b. Perform a similar configuration on Switch2, configuring the hostname and passwords as described for

S1. Save the configuration.

Step 4: Configure the hosts with the proper IP address, subnet mask, and default gateway.

a. Configure each host with the proper IP address, subnet mask, and default gateway. Host1 should be

assigned 172.16.1.2/24 and Host 2 should be assigned 172.16.2.2 /24. Host3, which is used to

simulate Internet access, should be assigned 209.165.201.2/24. All three PCs use their attached

router’s Fa0/0 interface as the default gateway.

b. Each workstation should be able to ping the attached router. If the ping was not successful,

troubleshoot as necessary. Check and verify that the workstation has been assigned a specific IP

address and default gateway.

Step 5: Configure RIP v2 routing

a. On R1, configure RIP version 2 as the routing protocol and advertise the appropriate networks:

R1(config)#router rip

R1(config-router)#version 2

R1(config-router)#network 172.16.1.0

R1(config-router)#network 172.16.3.0

Predict: how will RIP report these subnets in the routing table? As a 172.16.0.0 summary route, as well as individual subnets of the 172.16.0.0 network.

b. From the network commands, which interfaces are participating in RIP routing? _____________

Fa0/0, S0/0/0.

c. Perform a similar configuration on R2, setting the version, advertising the appropriate networks, and

turning off auto-summarization

d. On R3, perform a similar configuration. Do not advertise the 209.165.201.0/24 network.

Step 6: Configure and redistribute a default route for Internet access.

a. From the R3 router to the host simulating the Internet, create a static route to network 0.0.0.0 0.0.0.0,

using the ip route command. This will forward any unknown-destination address traffic to the PC

simulating the Internet by setting a Gateway of Last Resort on the R3 router.

R3(config)#ip route 0.0.0.0 0.0.0.0 209.165.201.2

b. R3 will advertise this route to the other routers if this command is added to its RIP configuration:

R3(config)#router rip

R3(config-router)#default-information originate

Step 7: Verify the routing configuration.

a. View the routing table on R3:

R3#show ip route

<<output omitted>>

Gateway of last resort is 209.165.201.2 to network 0.0.0.0

172.16.0.0/30 is subnetted, 4 subnets

R 172.16.1.0 [120/1] via 172.16.3.1, 00:00:17, Serial0/0/0

R 172.16.2.0 [120/1] via 172.16.3.5, 00:00:12, Serial0/0/1

C 172.16.3.0 is directly connected, Serial0/0/0

C 172.16.3.4 is directly connected, Serial0/0/1

C 209.165.201.0/24 is directly connected, FastEthernet0/0

S* 0.0.0.0/0 [1/0] via 209.165.201.2

How can you tell from the routing table that the subnetted network shared by R1, R2 and R3 has a

pathway for Internet traffic? Jawaban : There is a Gateway of Last Resort, and the default route shows up in the table.

b. View the routing tables on R2 and R1.

How is the pathway for Internet traffic provided in their routing tables? Jawaban : There is a Gateway of Last Resort leading to R3, and the default route shows up as a distributed RIP

route.

Step 8: Verify connectivity.

a. Simulate sending traffic to the Internet by pinging from the host PCs to 209.165.201.2.

Were the pings successful? Jawaban : Ya.

b. Verify that hosts within the subnetted network can reach each other by pinging between Host1 and

Host2.

Were the pings successful? Jawaban : Ya.

Step 9: Reflection.

a. How did R1 and R2 learn the pathway to the Internet for this network? Jawaban : From RIP routing updates received from the router where the route was configured (R3).