Southern Cross University CSC00240 Data Communications and Networks
Please refer to the case study document for this assessment.
For this assessment, you need to complete two main tasks:
A. LANs’ Design
The complete network consists of multiple subnetworks (in this case LANs) each of which has their own design according to usage. As we have learnt (or will learn depending on when you read this) in-class there are many design decisions involved in designing LANs. You need to design each component of the LANs with good justification for your design decisions. Your LAN design should fulfil the requirements laid out in the case study document. You will need to do some research on requirements for some of the functionalities the LANs need to perform and their solutions. For example, as stated in the document all the LANs should support video chats. You may also need to make some reasonable assumptions for your design. You should justify these assumptions. You will also provide costing for your solutions. All costings should be in AUD$.
B. IP Subnetting Design
We have seen (or will see in-class) that subnetworks and the devices in them need to be addressed. You will need to select a suitable starting address and subnet mask for IPv4 subnetting. The last two digits of your student ID should appear consecutively and in the same order as in your ID, in the starting address. For example, if your ID is 123456, then you can choose an address of the form xxx.x56.xxx.xxx. For the IPv6, please use the starting address:
2001 : DB8 : Θ :: /48
where Θ is the last four digits of your student ID expressed in hexa-decimal. The IP addressing should be provided in the form of tables (one for IPv4, one for IPv6) and contain the information noted down in the case study requirements. The starting addresses should be clearly stated before the beginning of the table.
III. SUBMISSION GUIDELINE
You will submit both these designs in the form of a report which thoroughly details the reasons for decisions made, as well as the actual decisions made. The report should follow a logical structure and be easy to follow. Jargon-laden and difficult to follow reports will not be looked upon favourably. The total length of the report is 1000 words. In addition you should include a Title Page, Contents Page and a page listing all references. These additional pages are not to be included in this word count. Be sure to number all pages in your report. DO NOT INCLUDE APPENDICIES. The Title Page should have the following information:
An Executive Summary is also required, and should be no more than 200 words. This is in addition to the 1000 word report. All information sources must be appropriately acknowledged and a full bibliography is required. References should follow the IEEE format.
There are two links provided for assessment 2 submission: 1) Turnitin link, 2) Assignment Submission link. You have to submit the same report to both links. If they are not the same or you don’t submit in both links, you automatically receive a Fail. The Turnitin submission will be used to check for academic misconduct while the Assignment Submission link will be used for marking purposes.
The report should be submitted as a Microsoft Word document through the Turnitin link. The word document should be named named ‘[Your last name] [Your student ID].docx’(quotations marks not included). For example, if I submitted the file it would be named Zafar 123456.docx.
It is perfectly normal to feel a little nervous when you are doing something for the first time particularly if it is something you will be judged upon. Just look back at your experiences, most probably when you did something for the first time there were some difficulties but after you had put effort in and done it multiple times, it became easier and took less time. The same principle applies here. As this is your first assessment of this kind, you will need time to process and solve it. You will/might difficulties and some tasks might frustrate you. That is absolutely fine. We all get things wrong when we attempt something new. The important thing is to learn from them and correct them. Being wrong and/or making mistakes are not the problem, not putting effort in and/or not learning from mistakes are.
You have the required knowledge and reasoning skills to solve this assignment. Use your common sense to guide you. For example, how would you go about buying a PC/MAC? You would probably look at the cost and the technical specifications and find a balance between them while satisfying your requirements. You would also not just look at one PC/MAC, and one retailer. You would most probably look at several options and then make your decision. Similar logic applies for this assessment.
You are encouraged to discuss the assessment with your fellow students and teachers. But you must develop your own solution and write your own report.
A marking rubric is provided with the assessment. We will mark the assessment holistically. What this means is that overall your solution should make sense and effectively solves the problem. Individual parts of the solution might be good on their own but overall make not work together, hence, making the solution ineffective. We want you to be able to effectively solve the problem. You should not look at each criteria in isolation. Almost all criteria depend on each other. To take an example, you may have the best report presentation but if everything in it is wrong, it does not matter and you will not gain any marks. This reflects the real-world where solutions should work. The layout of the rubric cannot capture this effect but you need to be aware that it is there. Your grade for the assessment will reflect how your overall solution tackles the given problems for this assessment.
Unit Code – CSC00240
Unit Name – Data Communications and Networks
Case Study Title – Designing a Small Network
This assessment report deals in designing a small network for a small news organization. The news organization is going to start a new office at Sydney, Australia location. Where they rented an entire floor in an office building in the Sydney CBD. The rented space is 35 meters wide, 40 meters long and 3.2 meters in hight. Company will be required to establish four departments at that office. The name of the departments is video department, editorial department, administration department and print department. We are tasked to design the required LAN and WLAN network that fulfil all the needs of the organization that mainly includes provide internet connectivity with better performance using IPv4 and IPv6 addressing scheme. A proposed network design is presented in the report that describe all the network devices used in the design and LAN connectivity within network. The prepared design is simple and easy to implement with lower budget.
We have tasked to design a local area network for a small news organization. The news organization is going to start a new branch office at Sydney Australia. They rented an office floor in a building at Sydney CBD. The office floor is 35 meters wide, 40 meters long and 3.2 meter in hight. The organisation has four department named as administration, video, editorial and print department. All the four departments are connected by wireless and wired local area network (WLAN and LAN) connectivity. All four departments are placed in different LANs to maintain security in the network but can communicate with each other. The network is capable of supporting video, voice and data communication between them. The installed wireless network is accessible all over the floor and any worker can connect their own device wirelessly. This wireless network is secured, so no outsider can connect with the network. The whole system is organized to use both IPv6 and IPv4 addresses and the proposed network is enough expendable in terms of data rate and increasing number of users.
Task 1 – Local Area Network Design
1. Design description
A LAN diagram is represented in the above figure. The proposed network diagram is based on cisco’s N-tier hierarchical model . Where the core router (ISP) is placed at the starting of the network. That further connects distributed router. Main internet connectivity is provided by the ISP or core router to the internal network. The distributed router connects access switch. This switch connects four routers that belongs to four different departments at that floor. A printer is installed in the network that is accessible by all departments. The server is configured with email and video chat software service that is also accessible by all the departments. Both the printer and server are connected to the main switch, access switch, for added security. This access switch also connects with a wireless access point that covers entire floor and accessible by all authenticated users. This access point is configured with WPA2 security and able to connect end user system to internet and company network. Further, each department installed with required number of PCs and an IP phone for video and voice communication between departments. The complete network uses both IPv4 and IPv6 addressing scheme and fulfil all the demand of the news organization.
2. Details of device used
Here is the list and description of the devices that we have use in this network design configuration.
3. Costing of design
The overall design cost is calculated by the analysing the total cost of equipment used in the network designing. As approximate costing of the design is described in the below table.
|Cisco 4221 ISR router||2||$1142||$2284|
|Cisco catalyst 2960-24 port switch||9||$529||$4761|
|CAT 6a cable||3 bundle||$211||$633|
|Aironet 4800 access point||1||$1552||$1552|
The total cost of the design is approx. $104454. This is the initial amount that is needed to design and prepared the proposed network for the news organization.
Task 2 – IP Addressing Scheme
Here is the IP addressing details for both IPv4 and IPv6 that we are using in the proposed network design.
IPv4 addresses –
|Device||Interface||IP Address||Subnet Mask||Default Gateway|
|Department IP Addresses|
|Departments||Start IP||End IP||Subnet Mask||Default Gateway|
IPv6 addresses –
|Device||Interface||IP Address||Default Gateway|
|Department IP Addresses|
|Departments||Start IP||End IP||Default Gateway|