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Introduction to Internetworking

Project 2: Coast to Coast Inc.

INTRODUCTION

You have accepted a contract to participate in the design of the network infrastructure of a company called Coast to Coast Inc. whose operations are located in two offices at the extreme ends of Canada. The East Office is in St. John’s, Newfoundland, while the West Office is found in Victoria, BC. Your job is to develop IP addressing schemes at both locations as well as to assist in selecting routing protocols for the two sites.

OBJECTIVES

The objectives of this project are:

• Design a valid IP addressing scheme for a given LAN
• Perform IP addressing and subnetting calculations
• Choose a routing protocol to meet specified requirements

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MATERIALS REQUIRED

Pen and paper (and possibly a calculator) are all the materials required to complete this project. No hardware or software is needed.

PROJECT SPECIFICATIONS

The diagram below shows a general view of Coast to Coast Inc.’s network with the two sites in Victoria and St. John’s.

Instructions

1. Developing an IP addressing scheme for the East Office

The East Office site consists of 6 network subnets with the number of hosts as indicated in the table below.

A decision has already been made to use private addressing on the internal LAN of the East Office and your boss wants you to use a single class C address and implement subnetting to accommodate all 6 subnets.

• Choose an appropriate valid private IP address for the LAN.

• Assigning a subnet mask for the LAN
  • What will the subnet mask have to be to allow enough subnet address space for all the 6 subnets and as much address space for host addresses as possible (Note: Assume zero-subnets cannot be used)

• What is the maximum number of hosts each subnet will be able to accommodate?

• How many valid subnets will this subnetting create? (Assume the zero-subnet cannot be used)

• Write down the subnet numbers of these subnets

• Determine the valid host address ranges and broadcast address for each subnet.

2. Developing an IP addressing scheme for the West Office

The West Office consists of a head office with 10 divisions each in their own subnet with the number of hosts as indicated in the table below:

You are to use a single private class B address and implement subnetting to accommodate all 10 subnets. (Note: Assume zero subnets are not to be used in this exercise)

• Choose an appropriate valid private IP address for the LAN

• Choose a subnet mask that will leave enough host address space to accommodate all the hosts on the subnets assuming that the largest amount of hosts will never exceed 320, but due to future expansion the number of subnets may increase to 100 subnets. Write down that subnet mask and the number of hosts it will allow on each subnet.

Mask___

Number of Hosts___

• How many valid subnets will this create?

____

• Write down the subnet addresses of these subnets

• Determine the remaining information, such as the valid host address ranges and broadcast addresses. Include all the information in the table below.

3. Choosing routing protocols and WAN technologies

Your last step is to help design a routing strategy for the Coast-to-Coast network.

Select appropriate routing protocols for the LAN at each of the two company offices. Write down your selections below:

Routing protocol for the East Office LAN

Routing protocol for the West Office LAN