MITS5003 Wireless Network Infrastructure Design: Request For Proposal Assessment Answer

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Question :

MITS5003 Wireless Networks & Communication 

Case Study

Submission Guidelines:

This is a Case study, wherein you will be responding to a RFP Request for Proposal a design of WLAN Wireless LAN and Wide Area Network WAN. This assessment task is group task and you will work in group to apply your knowledge, to analyse, design the network in this case study. This will cover the first two learning outcomes and parts of other remaining learning outcomes of the unit. All submissions are to be submitted through turn-it-in. Drop-boxes linked to turn-it-in will be set up in the Unit of Study Moodle account. Assignments not submitted through these drop- boxes will not be considered. Submissions must be made by the due date week-5 and time is Friday 4:00 PM.

The turn-it-in similarity score will be used in determining the level if any of plagiarism. Turn-it-in will check conference web-sites, Journal articles, the Web and your own class group members submissions for plagiarism. You can see your turn-it-in similarity score when you submit your assignment to the appropriate drop-box. If this is a concern you will have a chance to change your assignment and re- submit. However, re-submission is only allowed prior to the submission due date and time. After the due date and time have elapsed you cannot make re-submissions and you will have to live with the similarity score as there will be no chance for changing. Thus, plan early and submit early to take advantage of this feature. Groups can make multiple submissions, but please remember we only see the last submission, and the date and time you submitted will be taken from that submission.

Your document should be a single word or pdf document containing your report.

A Wireless network Infrastructure design for enterprise network: A request for proposal (RFP) to design a new Wireless Local Area Network LAN and Backbone wide area network (WAN) network design report.

Group formation: In each tutorial please form a group of 3 to 4 students to work on the group assignment. The assignment specifications are in a form of request for proposal (RFP) which is a solicitation, often made through a bidding process, by a company interested in procurement of an installation contract service to potential suppliers to submit a proposal. This group assignment provides an opportunity for you to work in a project as a group member and apply data communications and Computer networking concepts to a practical network design. You will be required to analyse a case study and make networking recommendations based on the RFP requirements. This assignment will also allow you to present your solutions in a formal reporting format. Contributions from individual members of a project group will be described in the formal report. Peer assessment component will be discussed; Forms such as Individual load factor and Group load factor will be used to access individual and group contributions. Such data will be used to individualize student marks in cases of substantially inequitable work put in by members of a given group.

You should supply the following information in response to the request for Proposal (RFP):

Task -a) Project requirements brief can be derived from Objectives and Scope of Work section of the RFP. A requirement brief is usually an itemized list of the client’s requirements derived from the RFP.

Task -b) Wireless LAN design for a typical floor, which includes the following information:-

  1. Wireless computer desktop layout plan with network topology for a typical floor level.
  2. Wireless Access Point location on a typical floor, vertical cable paths and lengths between the floors. Switch/Access Point functional specifications. Assume the floor to ceiling height as 3 meters approximately including the false ceiling.

Task -c) Recommendation and justification of the structured backbone cabling, Access Point (AP), Switches i.e. distribution layer, building backbone cabling and media type to be used for a typical floor level and for the connection across the road to the existing LAN.

Task -d) List of equipment and the wireless specifications, technical and cabling specifications. Note: Specifications/Technical details should be included in the Appendix.

Task -e) You need to outline design rules for a computer WLAN WAN network and describe it in detail. Your description should include:

  1. Detailed steps required in the network design process,
  2. methods used to form estimates of network performance for each access point taking into account the types of antennae and wireless protocol,
  3. An example of a basic sample design showing proposed wireless desktop floor plan, assumptions, justifications and calculations.
  4. Assumptions of backbone connectivity using wireless media needs to be reported.
  5. Your new design should include IP addressing strategy for both the acquired new buildings

Write a report of maximum 3000 words, not including diagrams and pictures (you can write a good report in around 1500 words).

Description of Wireless LAN Design

The submission of the assignment will be in the form of a Technical report write-up with explanatory figures and other requirements for reporting. The specifications are as follows.

public transport company requires that its office building be connected over a Wireless LAN (WLAN). You have been asked to respond to the following excerpt from their RFP (request for proposals) in the newspaper:

About Return2Fender Transport Company

At present, the total number of office employee is 700 with 200 in Sydney & Melbourne and 100 each in Adelaide, Brisbane, and Perth. Each office worker is provided with a multimedia desktop with wireless network connection. Owing to a business acquisition, the number of employees at Melbourne is expected to increase substantially.

Objectives and Scope of Work

The size of the Melbourne office Wireless LAN would increase/expand from 200 to 1000 stations; after two new 10-storey buildings from across the road have been acquired to accommodate for the additional office space needed to seat increased employees, see Figure 1. The new buildings have not yet been wired for the WLAN. The buildings also needs a WAN to be connected to the existing office network (from across the road).A typical floor plan for structured wiring for design LAN and WLAN

It is envisaged that the two new building in Melbourne office would support a wireless networked office environment where each of the staff PC would be equipped with desktop high resolution video conferencingVoIP alongside the usual business applications such as webemail, and regular office productivity packages. It is anticipated that the network traffic generated by each active-user is estimated to vary between 15-20 Mbps. The expected user activity pattern for all new buildings may be seen in Figure 2. The Wired LAN infrastructure needs to be designed, which should support the anticipated peak time data traffic, and in parallel you will design Wireless-LAN to support LAN.Number of expected users active during business hours

The technical report should contain the following three important diagrams to support your report.

Diagrams:-

For a typical floor of any one building and a typical building you are required to supply the floor plan and for any one building floor-to-floor cross connect of network communication.

( 1 ) A typical floor-plan for any one floor, as all floors are identical and typically same.

( 2 ) Each Building floor switches and Access-point (AP) locations & inter-connections to building, and for each building switch and routers backbone connection diagram with cross- section of a building.

( 3 ) IP addressing strategy, Location of Switches, Routers, Access Points. Focus on optimized design.

( 4 ) For the entire network you will be required to provide the WAN connectivity to main head office network diagrams.

Details of structured horizontal floor cabling for desktop computers, Access points & Switches, vertical floor-to-floor cross connect structured vertical cabling diagram for a typical building and WAN connectivity for two new buildings and the Main head office building layout is required.

The technical report should include details of WLAN & WAN standards used for structured horizontal cabling, vertical cabling and network topology used should be described.

Please read the unit guide for assessment criteria and remember that if you do not understand your work, you will get minimum mark (ZERO).

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Answer :

Wireless Network infrastructure Design

Request for Proposal


Task – a) Requirements of Project

This technical report is an RFP or proposal request document, to design a backbone wide area network (WAN) and a novel wireless local area network (WLAN) and for a public transport company. Return2Fender company of transport require that the building of its office is connected with a wireless local area network (WLAN). Currently organization have 700 total employees. In which 200 are in Sydney & Melbourne and 100 employees in Adelaide, Perth and Brisbane office location. Every employee is assigned an advance desktop connected by wireless link connection. Company acquire a new business so the quantity of employees at Melbourne office location is projected to increase. Organization acquire two new 10 floor building crossways the road to house for the added office area required to bench those new staffs. It’s wireless local area network (WLAN) size will increase from 200 to 1000 workstations. There is no network is configured at the new office space and company require a wireless LAN (local area network) for office system and a wide area network (WAN) to connect the new network to existing office network. The archetypal floor range of respective building is 100 meters in length and 40 meters wide, same for all floors in both buildings. Company required that the two novel houses at Melbourne should provisioned with a wireless network. Each workstation there is configured to use high tenacity video conferencing, VoIP, important professional software such as web, E-mail and usual office productivity correspondences. Company expect that the network throughput produced by each active worker is estimated among 15 to 20 Mbps. So, new wireless network is capable to handle this much of data transfer speed. A WLAN or (wired local area network) is also installed to provision the predictable crowning time data transfer speed parallelly with wireless network. The RFP document also contains diagram of each typical floor, design of placement of each networking device and a detailed description of the installed devices in the new network. 

Task – b) WLAN or Wireless Local Area Network Design

A proposed system arrangement planning is presented here for the new building at Melbourne office location. The floor of the new office building is measured as 100 meter in length and 40 meters in width. And the ceiling height between floor (among all the 10 floors) is about 3 meters approximately. Every floor has installed with an access layer switch which is installed at the starting point of every floor network. These switches are connected with the ethernet cables that further connects five access points at that floor. These five access points are capable of cover all the workstations of the entire floor. A typical length of vertical cable is about 40 to 50 meters and horizontal cable length is about 1600 meters (approx. 160 meters for a floor). This length of cable is used to provide connectivity from access layer switch to all five Aps or access points at that level. 

Floor Plan or Desktop Layout Plan

Figure – Floor Plan or Desktop Layout Plan


Task- c) Recommendation and Justification

To install the wireless LAN system in the new workplace house we use several networking equipment such as ethernet cables, routers, switches and AP or access points. A floor level diagram is here that represent network device location and cabling plan.


Network Device Location and Cabling Plan

Figure – Network Device Location and Cabling Plan

We use Cisco’s series integrated circuit router that provide better performance, better throughput and so many beneficial features like support of SD-WAN and digital ready platform. Cisco’s catalyst 2960 24 port stand-alone switches are used, one at each floor level, to provide ethernet connectivity. These series of switches are beneficial in providing better network performance. The access points used in this configuration are Cisco’s 802.11ac category that support both 2G and 5G band. End user workstations are configured to use wireless network, connectivity provided by the access points. Main ethernet connectivity is provided by the CAT 6a cables that connects routers, switches and all the access points of that floor. The multimode fibre cable is used to provide connectivity between all the floors. This fibre cable connects distributed routers at each floor and provide fast network throughput speed. Fibre cables are also used in WAN (wide area network) connectivity between five buildings. 

Task – d) List of Equipment

In this section, we will discuss about the equipment used in the configuration of new office network with their detailed technical specification and configuration. 

  1. Router – cisco’s 4000 sequence ISR (Integrated Service Router) is cast-off in this arrangement. These routers are benefits in WAN connectivity. This series of router is advantageous for future upgradations owing to its digital-ready dais, intelligent network capabilities. This series of router also sustenance improved network performance with improved throughput speed. It delivers a flexible and scalable groundwork to effortlessly move to the top services similar to SD-WAN. Other important benefits include like support of cisco’s digital network architecture (DNA), intent-based networking, VoIP support, easy to manage with lower cost expenditures. 
  2. Switches – cisco 2960-24 port catalyst switches are cast-off in the new system to provide ethernet connectivity to the access points. These are leading layer two edge switches that provide improved and high secure operational speed with improved sustainability. This category of switches is originated from standalone series of switches with fast ethernet connectivity that provide 1 GbE SFP or small form factor pluggable uplinks. There are some other benefits of using these switches such as –ethernet’s fast connectivity with PoE (power over ethernet), auto smart ports, highly secure, ease of operation and troubleshooting etc. 
  3. Wireless APs or access point – Cisco’s Aironet 4800 sequence of wireless APs (access points) are castoff in this configuration to deliver wireless connectivity to the system user device. These are high performance, high secure device with data analysis without degrading network performance. It has an intelligent capture probes with support of cisco DNA center for deep analysis, support of self-detection of issues, built-in hyper location combined with cisco DNA space and with four built-in radios to provide high quality Wi-Fi connectivity. It supports 2.6 Gbps data rate per radio with 802.11ac wave 2 compatibility. It supports both 5 GHz and 2.4 GHz or dual 5GHz, dual radio band with specification of up and around 160 MHz widespread dynamic bandwidth assortment.  
  4. Cable – category 6a cables (CAT6a) are used to provide ethernet connectivity in the network. It’s a CAT 6 standard cable that support over 10 Gigabit ethernet connectivity with its four pairs of wire that are twisted pair copper wire, at the distance of 100 meters. CAT 6a support standard bandwidth of 500 MHz at the maximum data rate of 10 Gbps that has improved alien crosstalk characteristics, allow 10GBASE-T standard to be run for same 100 meters distance. A single mode fiber cables are used in WAN connectivity and to connect core routers within a building. This fiber cables support data rate of 100 Gbit per second for the transmission distance of up to 5 km. 

Task – e) Design Rules

A complete network design is presented in the figure below that shows connectivity between all the office building (existing and new offices) with wireless (WLAN) and wide area (WAN) connectivity. 


 Complete network design

Figure – Complete network design

The new network at Melbourne office location is starts from the core router that connect two distributed routers, one router for each building. This distributed router further connects other distributed routers installed at each floor. These distributed routers connect access layer switches that are one at each floor. Connectivity from WAN connection to the core router is provided with fibre cables and from core router to all access switches and access points are provided via CAT 6a cables. These access switches further connect access points at that floor. Cisco Aironet 4800 wireless access points are used in this configuration. This AP series support both 2.4 and 5 GHz band with its four antennas. That are capable of 2.6 and 5.2 Gbps throughput speed. This speed and area covered by each antenna is capable to cover the whole floor area at each building. For example, a floor plan provided in the above section, a proper placement of these wireless access points, switch and desktops are provided. That shows, five APs or access points stay capable to provide connectivity to the whole ground zone with effective throughput speed required to complete all daily activities of employees. All the desktops are installed a compatible NIC to support the channel speed of the wireless access point. A typical IP address strategy of a floor, is described in the underneath table.

DeviceInterfaceIP AddressSubnet MaskDHCP Range
Core RouterExternal ISP ProvidedN/AN/A

To Distributed Router10.1.1.1255.0.0.0N/A
Distributed RouterTo Core Router10.1.1.2255.0.0.0N/A

To Access Switch192.168.1.1255.255.255.0N/A
Access Point 1N/A192.168.1.51255.255.255.0192.168.1.52 – 100
Access Point 2N/A192.168.1.101255.255.255.0192.168.1.102 – 150
Access Point 3N/A192.168.1.151255.255.255.0192.168.1.152 – 200
Access Point 4N/A192.168.1.201255.255.255.0192.168.1.202 – 250
Access Point 5N/A192.168.1.251255.255.255.0192.168.1.252 - 254


Table – IP Address Plan