CCNA Exploration

Routing Protocols and Concepts                            Exploration Routing: OSPF Skills Based Assessment

Exploration Routing: OSPF Skills Based Assessment

Remote_1

Remote_2

Learning Objectives

Upon completion of this lab, you will be able to:

·         Create an addressing scheme to accommodate the hosts on the network

·         Cable network according to the diagram

·         Configure OSPF

·         Configure OSPF priorities

·         Configure OSPF cost

·         Configure OSPF authentication

·         Configure a static default route

Scenario

You are a network engineer for an ISP with multiple locations that are connected through a switch. You are assigned the task of creating an addressing scheme for each client’s LAN. You must set the OSPF priorities so that the ISP router is the DR and the Remote_1 router is the BDR. You must also make sure that the Remote_2 router never takes part in the DR/BDR election. Authentication must also be set so that a rouge router cannot connect to the network and propagate false routes into the network.

Task 1: Create an Addressing Scheme.

Step 1: Create an addressing scheme for each LAN using the 192.168.1.0/24 address space.

Remote_1:

·         Lo0: 60 Hosts 

·         Lo1: 12 Hosts

Remote_2:

·         Lo0: 62 Hosts

·         L01: 28 Hosts

Step 2: Record the appropriate subnet address and mask in Table 1.

Table 1

Instructor’s Initial ______

Task 2: Cable and Configure Network.

Step 1 Cable the network according to the Topology Diagram.

Step 2 Place the correct interface address for each router in Table 2.

Table 2

Step 3 Verify the configurations.

Instructor’s Initial ______

Task 3: Basic OSPF Configuration.

Step 1 Configure OSPF on each router.

Use Process ID 1 and advertise all directly connected networks in OSPF Area 0. Do not advertise the loopback interface on the ISP router.

Step 2 Verify the OSPF configuration.

Confirm that each router has formed an adjacency with one another and has a path to each network in the topology.

Instructor’s Initial ______

Task 4: Confirm OSPF Priorities.

Step 1: Verify the OSPF priorities.

Confirm that the DR/BDR election took place and that the ISP router is the DR, Remote_1 is the BDR and the Remote_2 router is the DROTHER.

Step 2: Configure the ISP router with the highest possible OSPF priority.

Step 3: Assure that the Remote_2 router will never take place in the DR/BDR election process...