Scenario

A major data analytics company has asked you to assess and redesign their network.

They are opening new branches in Sydney and Adelaide, which will require new equipment. They have existing contracts and hardware to maintain fibre optic leased line WAN links between sites.

PART 1 - Network specifications and diagram
PART 2 - Subnet the network and assign IP addresses to the appropriate devices
PART 3 - Research and source appropriate devices justifying choices (feasibility, efficiency, etc.) with a Weighted Scoring Model (WSM) and documented report
PART 4 - Cloud computing proposal

PART 1 - Network specifications and diagram

Network Specifications

You have been given a rough sketch of the network topology below. You are to draw the network using Visio, subnet the network (see case study part 2), and assign port numbers and IP addresses to ports.

PART 2 - Subnet the network and assign IP addresses to the appropriate devices.

Each location has the following number of hosts
Zurich, Singapore, and Sydney will each include a wireless LAN.

Subnetting
Subnet the network topology using a public class B network. You are to use the table format below to provide the subnet details.
Table 1. Subnets (including WAN subnets)
Spreadsheet Columns: Subnet name, subnet address, subnet mask (in slash format), first useable address, last useable address, broadcast address, static address range and DHCP address range (all addresses to be in dotted decimal notation)
Table 2. Router Interfaces
Spreadsheet Columns: Location, interface, IP address, subnet mask (in slash format)
Table 3. Servers
Spreadsheet Columns: Location, server name, IP address, subnet mask (in slash format)
Additional requirements:
- Choose one public B class network address for the entire network and subnet this block of addresses to optimise spare addresses for future expansion.
- Place the WAN subnets in the blocks directly following the LAN address space.
- Servers at a given location should be placed within a "server subnet" rather than as part of the same subnet used for workstations.
- The size of your subnets should be large enough to satisfy these requirements, but no larger.
- DHCP will to be used for IP address allocation for hosts in each subnet and these ranges are to be allocated for each LAN.
- Static IP addresses are to be allocated where appropriate.
- The ISP has given us an IP address of 212.212.111.99/30 for our Internet connection at Zurich.

PART 3 - Research and source appropriate devices justifying choices (feasibility, efficiency, etc.)
You are to research and submit a project procurement plan for the Sydney and Adelaide.
The devices you must include are routers, switches, and wireless access points.Make sure the devices you select can handle the number of workstations required at each site, and provide a good quality of service to wired and wireless users.
Your project plan and final recommendations should be based on a Weighted Decision Matrix (similar to the WDM you did in the Procurement Practical). You are to compare five (5) devices from each category and to base the decision on reasonable and well-justified attributes.
The budget for all procurement is $10,000. You may exceed this, if you can justify it.
Your project plan is to contain the following components:
Executive summary
- Briefly describe the goals of the procurement plan
Weighted Decision Matrix - hardware resource requirements analysis
- Include a written justification for priorities and attributes given in the matrix
- Create your WDMs in Excel and copy and paste them into your Word doc
Budget
- Create a well-presented table of the prices of all devices and the total cost
- Include hardware only, not labour

PART 4-Cloud computing proposal
You have been asked to prepare a proposal about how cloud computing could be used to reduce the company's hardware, service, and energy costs. You are to consider the following three scenarios, and make a recommendation on which to choose:

1. Replacing ALL workstations within the organisation with thin clients, which will access a desktop environment provided by a cloud service provider (such as Amazon).

2. Replacing ALL workstations within the organisation with thin clients, which will access a desktop environment provided by a private cloud infrastructure, created in-house and based in Zurich.

3. Continuing to use workstations.

The company's current contract is $800 per workstation, per year, for hardware and service. On average, each workstation currently consumes 200 kWh per year of electricity.

In making your recommendation, you should consider costs. This will involve picking a cloud computing service (any one will do), and checking their current prices.

As well as costs, you should also consider the security implications of moving to a cloud service.

Your proposal should not exceed 2000 words. You must provide citations for any references that you use.