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Network Design Report and Presentation of XYZ Company Assessment 3 Answer

Assessment 3 Assessment type: Problem Based Scenario — individual report and presentation 

Purpose: This assessment will allow students to demonstrate a Network design based on a real time scenario. This assessment contributes to learning outcomes c and d. 

Value: 30% (report 25%, presentation 5%) 

Topic: Network Design Report and Presentation

Task details: Main headquarter of company XYZ located in Sydney and it also has another department in Melbourne. Sydney office occupies 5 floors building which has 5 main departments: Administration, customer support, Hardware, HR and Sales. The administration is on the first floor, Customer Support is on the second floor, Hardware is on the third floor, HR is on the fourth floor and Sales is on the fifth floor. The administration has X workstations, Customer support has X+30 workstations, Hardware has X+20 workstations, HR has X+35 workstations and Sales has X+40 workstations. Generally, each department has its own applications, but some applications require inter-department data transfer and also between another interacted department "Melbourne " All workstations need internet access, Company intranet access to another department. Access to local and remote servers and also access to email and Web servers. Email and web servers located in and file backup servers in Melbourne department. Melbourne department has X+50 computers,2 back up servers and three printers. You as a network engineer need to come up with network design report. X=last two digits of your student ID. If X is 00 to 09 then please use X + 20. (For example: if your student ID is 12345678 then use 78 as X but if your student ID is 12345601 then use 01+20=21 as X).
You need to come with design report and send it to your technical manager.
Report: The report must contain the following sections:
1. Introduction: Critical analysis of networking requirements 

2. Local Area Network (LAN): Design and description of Local Area Network for all subnets which must include: o Network topology: Discuss the reasons for choosing the particular network topology. o LAN design connections to the servers, connection to other subnets and also the internet. o IP addresses: Find all network and host addresses including subnet masks according to the requirements with using the private address with your choice. 

3. Hardware: Provide a complete description of all interconnecting devices (switches, routers, hubs and access points) and wiring used to build the network. Provide justification for your choice.

4. Conclusion: Comprehensive summary of the work done and recommendations.


Assessment 3

Problem based scenario

Topic – Network design report and presentation

1. Introduction

In this assessment task, we are designing a local area network topology for the company XYZ. Company’s main head quarter is situated at Sydney and another departmental office at Melbourne. Sydney office is located at a building which is having five floors with five department each floor. The five departments are, namely sales, HR, administration, customer support and hardware. A complete list of departments with corresponding details is here – 

Department name Floor Number of workstations Other devices 
Administration First floor382 servers 
Customer supportSecond floor68
Hardware Third floor58
HRFourth floor73
Sales Fifth floor78
Melbourne N/A882 server + 3 printers


Every department is working on their own application and some applications are used for inter department data transfer and to and from the departments at Melbourne site. All the departments are connected with internet service and also with company’s internal network (intranet) to connect with another department. The intranet connection facilitates them to access remote and local servers, access to web and email server of the company. The web and email servers are residing at Sydney location at the ground floor and email and backup file server at Melbourne location. The Melbourne location has a number of computers, listed on the above table, with back up servers and three printers. This is the complete architecture of the XYZ company. Based on the provided details or requirements, we design a local area network for the XYZ company. 

2. Local area network (LAN)

3. Network topology – 

the network topology for XYZ company is presented topology

The above local area network topology is based on cisco’s hierarchical architecture. Where network is divided in to three layers, as core, distribution and access layer (Academy, C., 2020). The network is started from the core router that is connected with the internet. This work as an edge device that connect internal company network (intranet) to outside network (internet). Further this device is connected with distributed router that belongs to the second layer of this hierarchy. This router connects all the access layer switches that are belong to different departments at each floor. Servers, computers and printers are connected to these access switches with ethernet connectivity.

  • LAN design connections

The complete local area network design is built on wired ethernet connectivity. We use CAT6a type cables for connectivity between devices within departments. Two servers namely email and web servers are placed at the ground floor at the Sydney site. That are connected with the access switch of that floor or department via ethernet cables. File back up and email back up servers are placed at Melbourne location that are also connected with the access layer switch via ethernet cables. Users from the both sites are configured to access the email and web server via the intranet connection of the company, to access their emails and web services. Every department is provided an IP subnet that is further use to control their access within department.

  • IP addresses

The IP address planning, used in this local area network topology, is presented in the below table. 

Department / DeviceInterface IP address / rangeSubnet maskDefault gateway
Melbourne site
Core routerS0/0/0ISP providedN/AN/A

Distributed routerS0/0/0192.168.1.1255.255.255.128N/A

Melbourne NIC192.168.1.2 - 89255.255.255.128192.168.1.1
Email back-up serverNIC192.168.1.90255.255.255.128192.168.1.1
File back-up serverNIC192.168.1.91255.255.255.128192.168.1.1
Printer 1NIC192.168.1.92255.255.255.128192.168.1.1
Printer 2NIC192.168.1.93255.255.255.128192.168.1.1
Printer 3NIC192.168.1.94255.255.255.128192.168.1.1
Sydney site
Core routerS0/0/0ISP providedN/AN/A

Distributed routerS0/0/0.10172.16.0.1255.255.255.192N/A





Administration NIC172.16.0.2 – 39255.255.255.192172.16.0.1
Customer supportNIC172.16.1.2 – 69255.255.255.128172.16.1.1
Hardware 58172.16.2.2 – 59
HR73172.16.3.2 – 74
Sales 78172.16.4.2 - 79255.255.255.128172.16.4.1
Email serverNIC172.16.0.40255.255.255.192172.16.0.1
Web serverNIC172.16.0.41255.255.255.192172.16.0.1


Here is the list of used hardware in this topology – 

  • Router – we use cisco’s 4221 integrated circuit router (ISR) in this configuration. This series of router is best suited for our small network requirements. It supports gigabit wired connectivity, support of SNMP and can be remotely managed using RMON tool. This router series is mostly used over WAN connection, that is why we use it as a core router for WAN connectivity between sites. It has new built-in intelligent capabilities with faster convergence and application aware networking that benefit us in application access between department
  • Switch – we use cisco’s 3550 intelligent switches in this configuration that preferably work with ethernet connection. This switch series belongs to enterprise class, multi-layer switches that provide better security, high availability and better quality of server support. It supports the network bandwidth of up to 10 Gbps with support of many cables like 10/ 100/ 1000-BASE-T with RJ-45 connectors. The other benefits of using this in our topology are its redundant power system, gigabit fast connectivity, advance VLAN features, faster uplink and high level of resiliency in the network (Services, P., 2020).
  • Cables – we use category 6a (augmented) (CAT 6a) twisted pair cables in this network topology. These are high speed ethernet cables that support a high-speed link of up to 10 Gbps at the max bandwidth of up to 500 MHz with this faster speed it is also a cost-effective approach in term of other cable types that support increased performance with PoE (power over ethernet) (Taylored Systems | Indianapolis. 2020).   

4. Conclusion

In this assessment of network designing, we design a robust network of XYZ company for its two sites situated at Sydney and Melbourne location. The local area design is based on cisco’s hierarchical model, containing three layers, in our network configuration. The designed LAN network fulfil all the networking requirements of XYZ company in terms of application access, server placement, access control and access of devices such as computers, servers and printers. A detailed list of IP addressing of the whole network is provided in the IP addressing section. All the used hardware in this topology are also describe at the end section, hardware. We recommend to use the described networking devices and IP addressing scheme that benefit their current and future networking need.

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