ASM 2 1619: Networking, Lecture notes of Computer Systems Networking and Telecommunications

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Higher National in Computing

ASSIGNMENT 2

Name: Dong Sy Nhat Thanh

ID: GCS

Class: GCS1003A

Subject code: 1619

Assignment due: Assignment submitted:

ASSIGNMENT 1 FRONT SHEET Qualification BTEC Level 5 HND Diploma in Computing Unit number and title Unit 2: Networking Infrastructure Submission date Date Received 1st submission Re-submission Date Date Received 2nd submission Student Name Dong Sy Nhat Thanh Student ID GCS Class GCS1003A Assessor name Nguyen Xuan Sam Student declaration I certify that the assignment submission is entirely my own work and I fully understand the consequences of plagiarism. I understand that making a false declaration is a form of malpractice. Student’s signature Grading grid

P1 P2 P3 P4 M1 M2 D

Assignment Brief 2 (RQF)

Higher National Certificate/Diploma in Computing

Student Name/ID Number: Unit Number and Title: Unit 2: Networking Academic Year: 2021 – 2022 Unit Assessor: Van Ho Assignment Title: Networking Infrastructure Issue Date: April 1 st, 2021 Submission Date: Internal Verifier Name: Date: Submission Format: Format: ● The submission is in the form of an individual written report. This should be written in a concise, formal business style using single spacing and font size 12. You are required to make use of headings, paragraphs and subsections as appropriate, and all work must be supported with research and referenced using the Harvard referencing system. Please also provide a bibliography using the Harvard referencing system. Submission ● Students are compulsory to submit the assignment in due date and in a way requested by the Tutor. ● The form of submission will be a soft copy posted on http://cms.greenwich.edu.vn/. ● Remember to convert the word file into PDF file before the submission on CMS. Note: ● The individual Assignment must be your own work, and not copied by or from another student. ● If you use ideas, quotes or data (such as diagrams) from books, journals or other sources, you must reference your sources, using the Harvard style. ● Make sure that you understand and follow the guidelines to avoid plagiarism. Failure to comply this requirement will result in a failed assignment. Unit Learning Outcomes: LO3 Design efficient networked systems. LO4 Implement and diagnose networked systems. Assignment Brief and Guidance:

Assignment scenario (cont.) The CEO Mr. Nguyen is happy with your first report and now he has asked you to analyse the specification from the institution, as given earlier. You need to design and implement the networking project within a given timeframe: Task 2 Design efficient networked systems:  Prepare a written step-by-step plan of how you are going to design a Local Area Network including a blueprint of your LAN.  Justify your choice of devices for your network design.  Produce a test plan to evaluate this design for the requirements of bandwidth and cost constraints as per user specifications.  Justify the security requirements and quality of services needed for selection of accessories.  Suggest a maintenance schedule to support the networked system. Task 3 Implement test and diagnose networked systems:  Implement a networked system based on your prepared design.  Conduct verification with, e.g., Ping, extended ping, trace route, telnet, SSH, etc.  Record the test results and analyse these against expected results.  Investigate what functionalities would allow the system to support device growth and the addition of communication devices.  Discuss the significance of upgrades and security requirements in your recommendations.

Table of contents

1. Provide a logical/physical design of the networked system

with clear explanation and addressing table

1.1. Logical design:

Definition:

• A network's logical topology design determines how hosts interact over a medium. Broadcast and Token-passing are the two most popular logical architectures.
• Broadcast topology basically implies that each host on the network medium distributes its information to all other hosts. The stations do not utilize the network in any particular sequence; it is latest come, first served. The way Ethernet works is as follows.
• Token-passing is the second type. Token-passing regulates network access by successively transferring an electronic token to each host. When a host gets the token, it is able to communicate data over the network. If the host has no information to communicate, the token is sent to the next host, and the process continues. Types of logical designs:

• Subnets
• Network objects
• Specific routing protocols
• Routing domains
• Voice gateways
• Traffic flow
• Network segments

1.2. Physical design:

A physical network design depicts the network topology in its entirety, including all devices and their connections. Physical diagrams will most likely include ports, cables, racks, servers, particular models, and more since they depict the physical features of a network. The physical network diagram can be a network host diagram, a network cable diagram, a rack diagram, or a mix of several types of interactive diagrams that allow you to view exactly what you need to see. Physical network diagrams can incorporate a variety of components since they depict the whole topology of a physical network:

• Connections: A physical network diagram is incomplete without connections. Each connection's endpoints should be tagged with the port it connects to and where it terminates. Different colors, thicknesses, and line types can be used to depict different sorts of connections, such as fiber, copper, and so on, depending on the amount of detail necessary.
• Labels: When a physical diagram employs generic icons, labels help viewers understand what they're looking at. Everything in the network, including switches, routers, firewalls, and other devices, should be tagged with the hostname and IP address.
• Diagram legend: it informs the observer on the meaning of numerous items and connections. The legend converts the many visuals, symbols, and colors into real- world terms.
• Switch Stacks: Switch stacks are similar to case switches in function and are frequently described as a single object. Switch Stacks: Switch stacks are similar to case switches in function and are frequently stated as a single object/device. Figure 2: Physical design

1.3. The different between logical design and physical design:

Physical design layout outlines the pieces of the logical design network which are in a given network architecture. Besides, it refers to the arrangement of computers and other physical components. Its components include Fiber, ISDN and Ethernet. The logical design network assumes a particular piece of a conceptual design in a network and assigns it a logical role in a within that framework. Its components consist of IP structures of the network such as Class A, B, or C address scheme.

1.4. Logical design of network based on the specific requirements:

Figure 3: Logical design in my project

• I prepared 6 computers, 2 routers, 2 switches and 4 servers. I have named these servers to be able to distinguish. The 2 servers below will be DHCP 1 and DHCP 2, the above 2 servers will be DNS and HTTP.
• I used the power cord to connect the computers to the switch and connect the switch to the router as shown in the picture.

1.6. The IP address table:

• and addressing table 1. Provide a logical/physical design of the networked system with clear explanation - 1.1. Logical design:
  • 1.2. Physical design:
  • 1.3. The different between logical design and physical design:
  • 1.4. Logical design of network based on the specific requirements:
  • 1.5. Physical design of network based on the specific requirements:
  • 1.6. The IP address table:
• 2. Evaluate the design to meet the requirements
  • 2.1. Test plan
  • 2.2. Evaluate my project
• 3. Implement a networked system based on a prepared design
• 4. Document and analyse test results against expected results
• REFERENCES - Router Device Interface IP address Subnet Mark Default gateway - Fa 0/ - Se 2/ - 192.168.10. - 10.0.0. - 255.255.255. - 255.0.0. - Router N/A - Se 2/ - Fa 1/ - Fa 6/ - Fa 0/ - 10.0.0. - 192.168.40. - 192.168.30. - 192.168.20. - 255.0.0. - 255.255.255. - 255.255.255. - 255.255.255. - PC 0-PC N/A - Fa - 192.168.10. - 192.168.10. - 192.168.10. - 255.255.255. - 192.168.10. - PC 3- PC - Fa - 192.168.20. - 192.168.20. - 192.168.20. - 255.255.255.0 192.168.20.
  • Server DHCP 1 Fa 0 192.168.10. - 255.255.255. - 192.168.10.
• Server DHCP - Fa - 192.168.20.10 255.255.255. - 192.168.20. - Fa 0 192.168.40.10 255.255.255. Server HTTP - 192.168.20.
• Server DNS Fa 0 192.168.30.10 255.255.255.0 192.168.20.

2.2. Evaluate my project

Advantage:

• Computers can ping each other's IP
• Computers on the 2nd floor can easily access the website from the DNS and HTTP server Disadvantage:
• Some servers are missing
• Security has to be improved Solutions:
• Upgrade a security system like firewall
• Add more switches to expand the layout network
• Reduce cost

3. Implement a networked system based on a prepared design

Step 1: Figure 5: Set up physical for Router

• This step is quite interesting, because in this article I am using LAN so I choose PT- Router-NM-1CFE, you can see the line below explaining that this is an ideal environment for LAN.
• To be able to add PT-Router-NM-1CFE to the router 1, we must turn off the router and then turn it on when we apply the PT-Router to the router 1.

Step 3:

• Next I will put IPv4, Default Gateway for 4 servers, you can see it in the figures below: Figure 7: DHCP 1

Figure 8: DHCP 2 Figure 9: DNS