Assignment

Learning Objectives

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

• Subnet an address space given requirements.
• Assign appropriate addresses to interfaces and document them in the Addressing Table.
• Cable a network according to the Topology Diagram.
• Erase the startup configuration and reload a router to the default state.
• Configure RIPv2 routing on all routers.
• Configure and propagate a static default route.
• Verify RIPv2 operation.
• Test and verify full connectivity.
• Reflect upon and document the network implementation.

Scenario

In this lab activity, you will be given a network diagram that must be implemented in packet tracer. A combination of RIPv2 and static routing will be required so that hosts on networks that are not directly connected will be able to communicate with each other.

Topology Diagram

Task 1: Fill Addressing Table:

Step 1: Examine the network requirements.

The addressing for the network has the following requirements:

• The ISP LAN will use the 203.162.108.0/24 network.
• The link between the ISP router and the HQ router will use the 172.16.10.0/30 network.
• The link between the BRANCH router and the HQ router will use the 172.16.10.4/30 network.
• The HQ LAN will use the 192.168.1.128/25 network
• The BRANCH LAN will use the 10.10.2.0/23 network.

(Note: Remember that the interfaces of network devices are also host IP addresses and are included in the above addressing requirements.)

Step 2: Fill the address table with appropriate IP addresses and subnet masks:

Task 2: Implement the Network.

Step 1: Cable a network that is similar to the one in the Topology Diagram in Packet Tracer.

You can use any current router in your lab as long as it has the required interfaces shown in the topology.

Note: If you use 1700, 2500, or 2600 routers, the router outputs and interface descriptions will appear different.

Step 2: Perform basic administrative configuration in the BRANCH, HQ, and ISP routers

1. Configure the router hostname as the minimum

Task 3: Configure and Activate Serial and Ethernet Addresses.

Step 1: Configure the BRANCH, HQ, and ISP routers.

Configure the interfaces on the BRANCH, HQ, and ISP routers with the IP addresses from the Addressing Table provided under the Topology Diagram.

When you have finished, be sure to save the running configuration to the NVRAM of the router.

Step 2: Configure the Ethernet interfaces of PC1, PC2, and PC3.

Configure the Ethernet interfaces of PC1, PC2, and PC3 with the IP addresses from the Addressing Table provided under the Topology Diagram.

Task 4: Verify Connectivity to Next-Hop Device.

You should not have connectivity between end devices yet. However, you can test connectivity between two routers and between an end device and its default gateway.

Step 1: Verify BRANCH connectivity.

Verify that BRANCH can ping across the WAN link to HQ and that HQ can ping across the WAN link it shares with ISP.

Step 2: Verify Ethernet interface connectivity.

Verify that PC1, PC2, and PC3 can ping their respective default gateways.

Task 5: Configure RIP Routing on the BRANCH Router.

Consider the networks that need to be included in the RIP updates that are sent out by the BRANCH router.

What networks are currently present in the BRANCH routing table before RIP is configured? List the networks with CIDR notation.

What commands are required to enable RIP version 2 and include these networks in the routing updates?

Are there any router interfaces that do not need to have RIP updates sent out?

What command is used to disable RIP updates on this interface?

Task 6: Configure RIP and Static Routing on the HQ Router

Consider the type of static routing that is needed on HQ.

What networks are present in the HQ routing table? List the networks with CIDR notation.

A static default route will need to be configured to send all packets with destination addresses that are not in the routing table to the ISP router. What command is needed to accomplish this? Use the appropriate exit interface on the HQ router in the command.

What commands are required to enable RIP and include the LAN network in the routing updates?

Are there any router interfaces that do not need to have RIP updates sent out?

What command is used to disable RIP updates on this interface?

The HQ router needs to send the default route information to the BRANCH router in the RIP updates. What command is used to configure this?

Task 7: Configure Static Routing on the ISP Router

Static routes will need to be configured on the ISP router for all traffic that is destined for the RFC 1918 addresses that are used on the BRANCH LAN, HQ LAN, and the link between the BRANCH and HQ routers.

What are the commands that will need to be configured on the ISP router to accomplish this?

ISP(config)#
ISP(config)#

Task 8: Verify the Configurations

Answer the following questions to verify that the network is operating as expected.

From PC2, is it possible to ping PC1?
From PC2, is it possible to ping PC3?
From PC1, is it possible to ping PC3?

The answer to the above questions should be yes. If any of the above pings failed, check your physical connections and configurations. Refer to the basic troubleshooting techniques used in the Chapter 1 labs.

What routes are present in the routing table of the BRANCH router?

What is the gateway of last resort in the routing table of the BRANCH router?

What routes are present in the routing table of the HQ router?

What networks are present in the routing table of the ISP router?

What networks, including the metric, are present in the RIP updates sent from the HQ router?

What networks, including the metric, are present in the RIP updates sent from the BRANCH router?

Task 9: Reflection

If static routing were used instead of RIP on the BRANCH router, how many individual static routes would be needed for hosts on the BRANCH LAN to communicate with all of the networks in the Topology Diagram?

Task 10: Document the Router Configurations

On each router, capture the following command output to a text file and save for future reference:

• Running configuration
• Routing table
• Interface summarization
• Commands used to configure each router
• Ping screenshots to verify connectivity