10.1.2.5 Packet Tracer – Propagating a Default Route in OSPFv2

Last Updated on April 23, 2018 by Admin

10.1.2.5 Packet Tracer – Propagating a Default Route in OSPFv2

Packet Tracer – Propagating a Default Route in OSPFv2 (Answer Version)

Answer Note: Red font color or Gray highlights indicate text that appears in the Answer copy only.

Topology

10.1.2.5 Packet Tracer – Propagating a Default Route in OSPFv2

10.1.2.5 Packet Tracer – Propagating a Default Route in OSPFv2

Addressing Table

Device Interface IPv4 Address Subnet Mask Default Gateway
R1 G0/0 172.16.1.1 255.255.255.0 N/A
S0/0/0 172.16.3.1 255.255.255.252 N/A
S0/0/1 192.168.10.5 255.255.255.252 N/A
R2 G0/0 172.16.2.1 255.255.255.0 N/A
S0/0/0 172.16.3.2 255.255.255.252 N/A
S0/0/1 192.168.10.9 255.255.255.252 N/A
S0/1/0 209.165.200.225 255.255.255.224 N/A
R3 G0/0 192.168.1.1 255.255.255.0 N/A
S0/0/0 192.168.10.6 255.255.255.252 N/A
S0/0/1 192.168.10.10 255.255.255.252 N/A
PC1 NIC 172.16.1.2 255.255.255.0 172.16.1.1
PC2 NIC 172.16.2.2 255.255.255.0 172.16.2.1
PC3 NIC 192.168.1.2 255.255.255.0 192.168.1.1

Objectives

Part 1: Propagate a Default Route

Part 2: Verify Connectivity

Background

In this activity, you will configure an IPv4 default route to the Internet and propagate that default route to other OSPF routers. You will then verify the default route is in downstream routing tables and that hosts can now access a web server on the Internet.

Part 1: Propagate a Default Route

Step 1: Configure a default route on R2.

Configure R2 with a directly attached default route to the Internet.

R2(config)# ip route 0.0.0.0 0.0.0.0 Serial0/1/0

Step 2: Propagate the route in OSPF.

Configure OSPF to propagate the default route in OSPF routing updates.

R2(config-router)# default-information originate

Step 3: Examine the routing tables on R1 and R3.

Examine the routing tables of R1 and R3 to verify that the route has been propagated.

R1> show ip route
<output omitted>
O*E2 0.0.0.0/0 [110/1] via 172.16.3.2, 00:00:08, Serial0/0/0
!-------------------

 

R3> show ip route
<output omitted>
O*E2 0.0.0.0/0 [110/1] via 192.168.10.9, 00:08:15, Serial0/0/1

 

Part 2: Verify Connectivity

Verify that PC1, PC2, and PC3 can ping the web server.