Download Assignment 2 networking and more Assignments Wireless Networking in PDF only on Docsity!
ASSIGNMENT 2 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 Bui Nguyen Minh Hoang Student ID GCD Class GCD0901 Assessor name Dang Quang Hien 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
P 5 P 6 P 7 P 8 M 3 M 4 D 2 D 3
Table of Contents
Scenario
After completing the first project. CEO Nguyen was very satisfied with my project and continued to give me the second task. In this 2nd project I was asked to analyze the specification as outlined in the first project. So I need to design and perfect my system and show the details that have been used in the system. I hope this second project of mine will meet the requirements of CEO Nguyen so that I can be trusted and entrusted with more projects in the future.
A. Provide a logical/physical design of the
networked system with clear explanation and
addressing table (P5)
I. The difference between logical and physical network design
a. What is a Logical Design?
A logical network is one that appears to the user as a single, separate entity although it might in fact be either an entity created from mutliple networks or just a part of a larger network. A logical network is defined by its IP addressing scheme. (Contributor, 2010) Logical Design focus on how data connections work through the computer network and how devices interact. Whilst the graphic includes nodes such as servers, routers and switching as shown in a physical network design, the lines do not represent physical cable flow. Admins can design numerous network logic diagrams, including maps for WAN, LAN, AWS, Cisco, and other applications. These diagrams might be exceedingly comprehensive or offer an overview of high standards. These design – and above particularly diagrams with up/down status alerts – allow administrators to acquire a greater insight into network topology and performance and to discover problems faster. A Logical Network Design concentrates on how to design out your facility and company and where you would find crucial network distribution points and what types of devices or switches to connect the plant. It can also comprise IP addresses, VLANs and switch settings. Below are the main characteristics of Logical Design:
- Logical Plant Floor layout
- IP Address Scheme and Subnetting
- VLAN Selection
- Access and Distribution Layer Switch types, models and ports.
- Typical configurations based upon standards Figure 1 : Logical design
b. What is a Physical Design?
The focus on physical devices and cable connections between them is on the mapping of your physical network topology. The topology diagram in a physical network shall be icons of elements such as workstations, servers, routers and switches, and cable connections shall be the line between them. In a sense, this is your network's most "exact" portrayal as you portray the layout and material connection of the actual pieces. This is not the most practical form of diagram to design, however. It is often more necessary to understand how data is transferred between devices and how data is compatible with the physical layout in your network. A Physical Network Design determines what the physical infrastructure needs to look like and how to interconnect all the devices. Key features of the Physical Design are:
- Evaluation of Environmental Conditions relating to Physical Media type required.
- Space Planning, Pathways, Routing
- Placement and Configuration of Zone Enclosures
- Physical Media required based upon logical design considerations i.e. fiber, copper, conduit types, etc.
LOGICAL DESIGN PHYSICAL DESIGN
ADVANTAGES
- Troubleshooting If Service is between two IP addresses, a logical network diagram can be utilized to exclude a firewall problem quickly.
- Firewalls You can verify that your firewall rules remain accurate with logical network diagrams.
- Capacity planning Although physical network charts are important to the planning of capacity, logical charts also aid. They enable you to map network expansion or change and understand what the impact will be.
- Sharing network information You can use a logical network diagram if you need to share information on the network, but you want to disguise physical information on the network.
- Eliminate redundancies Logical network diagrams will clearly help you determine what isn’t redundant — and what is. - Compliance can be critical for proving compliance with key regulations, such as PCI, that may require specific, secure architecture - Network Maintenance and Management Admins can run device inventory, get a visual overview of their environment, see which nodes are up or down, and see how their infrastructure operates under various loads - Solving When problems occur, admins need fast insight into what is causing the bottleneck DISAVANTAGES -^ If^ any^ node^ goes^ down^ the^ whole network is failed in the ring topology because the connection is the break.
- The new device cannot be added or removed from the network - Needs monitoring software - Equipment costs are high Table 1 : Compare between Logical and Physical Design
II. Discuss and explain the user requirements for general network
design
a. Determining Users Networking Requirements
Networking devices must mirror the objectives, characteristics and policies of their operating organizations. The networking architecture and execution are driven by two key objectives:
- Availability of applications – Networks provide application data between computers. If network users don't have the applications, the network does not do its job.
- Ownership cost – the budgets of the information system (IS) often amount to millions of dollars today. As major companies increasingly rely on electronic data for company management, the cost of computer resources continues to grow.
- Design – I will study the user's needs thoroughly and I will see the layout of the network device locations and how the system is implemented in accordance with supplier's requirements. During the installation process, the position of the device is vital, since it takes little time to install and also requires a great deal of attention to optimum design and simplicity.
- Timeliness – timely data should be provided by the system. Late data is ineffective. For video and audio, just-in-time delivery means that the data produced, in the exact sequence made and without a substantial amount of lag can be sent.
- Security – to safeguard the networks' underlying infrastructure against unauthorized access, abuse, maluse, modify, destruct or incorrectly disclosure by using safe and highly avoidable physical and software security to create a secure computer platform; Probably safety is closest to reliability based on performance, but will also effect capacities and latency.
b. The Design Problem: Optimizing Availability and Cost
In general, the following three general factors are part of the network design problem:
- Environmental donations — Environmental donations are the location and predicted environmental traffic of hosts, servers, terminals and other end-points as well as projected expenses to provide different levels of service.
- Performance limitations – performance limitations are network dependability, traffic performance, and computer speeds for host/client (for example, network interface cards and hard drive access speeds).
- Networking Variables —Networking Variables encompass the topology of the networks, lines and assignments of packet flows.
- Building: 3 floors, all computers and printers are on the ground floor apart from the IT labs – one lab located on the first floor and another located on the second floor.
b. Logical design of network based on the specific requirements
Figure 4 : Logical Design in my system
1 st^ Floor On the first floor there will be 3 rooms. Room 11 is used as a manager's room. Room 12 is used by the teachers in the school. Finally Room 13 will be used for the server and used by admin Figure 5 : 1st^ floor in my logical design Room 11:
- In this room I'm going to divide it into two areas. 1 place for Marketers and 1 place for Manager , in this room will include 17 computers, 2 printers, 1 WAP, 1 switch.
- WAP for all users in 1st^ floor and use IP address is: Wap11 192.168.70.200/
- VLAN 20 of the marketer includes 12 computers and 1 printer and use IP address is: Marketers (12 PC) 192.168.20.11-22/24, Printer 192.168.20.254/
- VLAN 40 of management includes 5 computers and 1 printer: Manager (5 PC) 192.168.40.11-15/24, Printer 192.168.40.254/
Room 13:
- In this room I will divide it into 2 areas, one for the admin and the other for the server. In this room will include 3 computers, 4 servers and 1 switch.
- VLAN 10 of admin includes 3 computers and uses IP address is: Admin (3 PCs) 192.168.10.11-13/ Server (DHCP, DNS, WEB, MAIL) 192.168.10.20 1 - 204/ Figure 8 : Room 13 in my logical design 2 nd^ Floor On the 2nd^ Floor. This floor only have 1 room 21. Room 21 is used as a Student's room Room 21 :
- This room is for Students and it includes 12 computers and 1 switch
- VLAN 50 of student includes 12 computer and uses IP address is: Student (25 PC) 192.168.50.11-35/
Figure 9 : 2nd^ Floor in my system 3 rd^ Floor On the 3rd^ Floor. This floor only have 1 room 31. Room 31 is used as a Student's room Room 31:
- This room is for Students and it includes 12 computers and 1 switch
- VLAN 60 of student includes 12 computer and uses IP address is: Student (25 PC) 192.168.60.11-35/ Figure 10 : 3rd^ floor in my system
d. The IP address table
Device Interface IP Address Subnet Mark Default Gateway Router
G0/0.10 192.168.10.1 255.255.255.0 N/A
G0/0.20 192.168.20.1 255.255.255.0 N/A
G0/0.30 192.168.30.1 255.255.255.0 N/A
G0/0.40 192.168.40.1 255.255.255.0 N/A
G0/ 0. 70 192.168. 7 0.1 255.255.255.0 N/A
G0/1. 50 192.168. 5 0.1 255.255.255.0 N/A
G0/2. 60 192.168. 6 0.1 255.255.255.0 N/A
S
VLAN 20 192.168.20. 1 255.255.255.0 N/A
VLAN 40 192.168. 4 0. 1 255.255.255.0 N/A
VLAN 70 192.168. 7 0. 1 255.255.255.0 N/A
S12 VLAN 30 192.168. 3 0. 1 255.255.255.0 N/A
S13 VLAN^10 192.168. 1 0. 1 255.255.255.0^ N/A
S21 VLAN 50 192.168. 5 0. 1 255.255.255.0 N/A
S31 VLAN^60 192.168. 6 0. 1 255.255.255.0^ N/A
PC(Marketer 1 - >12)
NIC 192.168. 2 0.
PC(Manager 1 - > 5)
NIC 192.168. 4 0.
PC(Teacher 1 - >15)
NIC 192.168. 3 0.
PC(Admin 1 - > 3)
NIC 192.168. 1 0.
WAP11 NIC 192.168.70.200 255.255.255.0 192.168.70.
Printer1 NIC 192.168. 2 0. 254 255.255.255.0 192.168.20. Printer2 NIC 192.168. 3 0. 254 255.255.255.0 192.168. 3 0. Printer3 NIC^ 192.168.40. 254 255.255.255.0^ 192.168.40. DHCP Server NIC 192.168. 1 0.2 01 255.255.255.0 192.168. 1 0. DNS Server NIC^ 192.168. 1 0.2 02 255.255.255.0^ 192.168.^1 0. Web Server NIC 192.168. 1 0.2 03 255.255.255.0 192.168. 1 0. Mail Server NIC^ 192.168. 1 0.2 04 255.255.255.0^ 192.168.^1 0. PC Student floor 2 (1-> 25 )
NIC 192.168.50.
PC Student floor 3 (1->25)
NIC 192.168.60.
Table 2 : The IP address table
B. Evaluate the design to meet the requirements
(P6)
I. Test plant
- In floor 1 () can ping to rooms of other floors and ping each other. Use 4 servers such as DNS, DHCP, web and mail. From computers in different rooms can ping these servers.
- The 2nd and 3rd floors include student computer labs. From the machines in these 2 rooms can access dns, web, mail. Can also ping each other and other floors
- The rooms on the first floor can use the wireless network
- All computers on the floors can ping to DNS, Web, DHCP and mail servers
- The system is installed correctly and the network can be used. In the future, it will support the installation of a firewall system
II. Evaluate My Network Design
Advantages
- Simple and effective design. The layout is clearly divided into 3 floors. Floor 1: Includes Admin, Teacher and Manager 2nd and 3rd floor: For students
- Each room of the 1st floor is supported with a printer
- The first floor is installed wireless network.
- Rooms are pingable to each other with low latency
- Support servers such as DNS, Web, DHCP, Mail in the admin room to be able to promptly handle if problems occur. Disadvantages
- The number of computers on the 2nd and 3rd floors is limited
- Layers 2 and 3 are not yet supported for wireless networks.
- It is easy to have a lack of network bandwidth if all rooms are operating at maximum capacity at the same time
- Incomplete firewall and security system
- Missing many servers
