11.6.1 Lab – Basic OSPF Configuration Answers
Topology
| Device | Interface | IP Address | Subnet Mask | Default Gateway |
|---|---|---|---|---|
| R1 | Fa0/0 | 172.16.1.17 | 255.255.255.240 | N/A |
| S0/0/0 | 192.168.10.1 | 255.255.255.252 | N/A | |
| S0/0/1 | 192.168.10.5 | 255.255.255.252 | N/A | |
| R2 | Fa0/0 | 10.10.10.1 | 255.255.255.0 | N/A |
| S0/0/0 | 192.168.10.2 | 255.255.255.252 | N/A | |
| S0/0/1 | 192.168.10.9 | 255.255.255.252 | N/A | |
| R3 | Fa0/0 | 172.16.1.33 | 255.255.255.248 | 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 | |
| PC0 | NIC | 172.16.1.20 | 255.255.255.240 | 172.16.1.17 |
| PC1 | NIC | 10.10.10.10 | 255.255.255.0 | 10.10.10.1 |
| PC2 | NIC | 172.16.1.35 | 255.255.255.248 | 172.16.1.33 |
Instructions:
Learning Objectives
- Cable a network according to the Topology Diagram.
- Erase the startup configuration and reload a router to the default state.
- Perform basic configuration tasks on a router.
- Configure and activate interfaces.
- Configure OSPF routing on all routers.
- Configure OSPF router IDs.
- Verify OSPF routing using show commands.
- Configure a static default route.
- Propagate default route to OSPF neighbors.
- Configure OSPF Hello and Dead Timers.
- Configure OSPF on a Multiaccess network.
- Configure OSPF priority.
- Understand the OSPF election process.
- Document the OSPF configuration.
Task 2: Basic Router Configurations
Perform basic configuration of the R1, R2, and R3 routers according to the following guidelines:
- Configure the router hostname
- Disable DNS lookup
- Configure the EXEC mode password as class
- Configure a password for console connections as cisco (case sensitive)
- Configure a password for VTY connections as cisco (case sensitive)
Task 3: Configure and Activate Serial and Ethernet Addresses
Step 1 Configure the interfaces on the R1, R2, and R3 routers with the IP addresses from the table
Task 4: Configure OSPF on the R1 Router
Step 1 Configure OSPF with a process ID number of 1, advertise all networks.
Task 5: Configure OSPF on the R2 and R3 Routers
Step 1 Configure OSPF with a process ID number of 1, advertise all networks.
Task 6: Configure OSPF Router IDs
Step 1 Configure R1 with a Loopback0 interface of 10.1.1.1 255.255.255.255
Step 2 Configure R2 with a Loopback0 interface of 10.2.2.2 255.255.255.255
Step 3 Configure R3 with a Loopback0 interface of 10.3.3.3 255.255.255.255
Step 4 Copy all running-configs to the NVRAM and reload routers
Task 7: Verify OSPF Operation
Step 1 Use the show ip ospf neighbor command to verify information about other routers was learned
Step 2 Use the show ip protocols command to view information about the routing protocol
Task 8: Examine OSPF Routes in the Routing Tables
Step 1 Use the show ip route command to view all learned networks via OSPF
Task 9: Configure OSPF Cost
Step 1 Configure R1 serial interfaces with a bandwidth of 64
Step 2 Configure R2 serial interfaces with a bandwidth of 64
Step 3 Configure R3 serial interfaces with a cost of 1562
Task 10: Redistribute an OSPF Default Route
Step 1 Configure a loopback address on the R1 router to simulate a link to an ISP.
Step 2 Create the loopback 1 172.30.1.1 255.255.255.252 on the R1 router
Step 3 Create a Default route directing traffic to the loopback interface.
Step 4 Redistribute the default route using OSPF
Task 11: Verifying OSPF
Step 1 Using the show ip route command verify that the default route was learned.
