Designing Network Infrastructure For CAC Brisbane Suburb, Sydney, And Administration Departments

Organization’s Requirements and Recommendations

Gather Requirements

There two major requirements for the CAC’s network. First, the organization’s network is to be upgraded to accommodate the emerging technologies. The network also needs to be simple, secure and scalable. The organization employees need access to emails. Currently, the service is provided by the organization ISP. The organization desire to set up an email address for all organizational employees. CAC managers require to share files between themselves. The organization also need a wireless internet access which ought to be made available in all the departments

One of the technical goal expected by CAC is to improve network capacity and Speed, improve network security by replacing hubs with a manageable switch which provide the ability to monitor the organization LAN and giving a greater control over how organization data travels over the network. 

Department	HR and Accounting Save Time On Research and Writing Hire a Pro to Write You a 100% Plagiarism-Free Paper. Get My Paper
Location	Brisbane Suburb
Component	Recommendation
Processor	AMD Sempron processor Dual core processor
Memory	DDR2 type 2gb
Hard drive	Serial ATA 160 GB
USB ports	4 USB ports 2 located in front and two at the back
Video card	Intel Video card, Radeon RX 580 Series
Sound Card Modem	AdLib manufacturer
Network card	Ethernet wired card Bus interface: PCI bus network card Network interface: RJ-45 interface network card
Operating system	Windows 7 professional. Microsoft as the manufacturer
Monitor	17 inches HP monitor
Printer	HP LaserJet 700 series
Speaker	Logitech Z623 speakers
Internet connection	Ethernet connection via RJ45 port and USB type of connection

Table 2 Computer system planning form Design department

Department	Design
Location	Brisbane Suburb
Component	Recommendation
Processor	AMD Athlon 64 X2 processor
Memory	DDR2 type 4gb
Hard drive	Serial ATA 1TB
USB ports	8 USB ports 2 located in front and 6 at the back
Video card	Intel Video card, Radeon RX 580 Series
Sound Card Modem	AdLib manufacturer
Network card	Ethernet wired card Bus interface: PCI bus network card Network interface: RJ-45 interface network card
Operating system	Windows 7 professional. Microsoft as the manufacturer
Monitor	17 inches HP monitor
Printer	HP LaserJet 700 series and EPSON 850 series printer
Speaker	Logitech Z623 speakers
Internet connection	Ethernet connection via RJ45 port and USB type of connection and wireless type of connection

Table 3: Computer system planning form Advertising department

Department	Advertising /Marketing
Location	Brisbane Suburb
Component	Recommendation
Processor	AMD Athlon 64 X2 processor
Memory	DDR2 type 4gb
Hard drive	Serial ATA 250 GB
USB ports	4 USB ports 2 located in front and two at the back
Video card	Intel Video card, Radeon RX 580 Series
Sound Card Modem	AdLib manufacturer
Network card	Ethernet wired card Bus interface: PCI bus network card Network interface: RJ-45 interface network card
Operating system	Windows 7 professional. Microsoft as the manufacturer
Monitor	17 inches HP monitor
Printer	HP LaserJet 700 series and EPSON 850 series printer
Speaker	Logitech Z623 speakers
Internet connection	Ethernet connection via RJ45 port and USB type of connection

Table 5: Computer system planning form Sydney department

Department	ADMINISTRATION
Location	Sydney
Component	Recommendation
Processor	Intel Pentium 4 600 series processor
Memory	DDR2 type 2gb
Hard drive	Serial ATA 160 GB
USB ports	4 USB ports 2 located in front and two at the back
Video card	Intel Video card, Radeon RX 580 Series
Sound Card Modem	AdLib manufacturer
Network card	Ethernet wired card Bus interface: PCI bus network card Network interface: RJ-45 interface network card
Operating system	Windows 7 professional. Microsoft as the manufacturer
Monitor	17 inches HP monitor
Printer	HP LaserJet 700 series
Speaker	Logitech Z623 speakers
Internet connection	Ethernet connection via RJ45 port and USB type of connection

Small organizations such as CAC can use brother type of printer for printing black and white copies. This printer prints 24 to 27 pages per minute with a print rate of around 52 pages per minute. For color printing the organization needs to go for copies for Epson 850 series which is said to print 20 copies per minute. Epson 850 series is all in one since the organization can use it to photocopy, print and scan copies.   

Figure 1 shows the physical topology design. The diagram demonstrates the physical design implementation that CAC need to implement. The diagram also illustrates the main points of a network upgrade. The points of an upgrade as shown by the diagram are cable installation, location, and devices. As indicated by the diagram floor one which is the ground floor contains the mainframe and the organizational server. As indicated by the diagram the mainframe connects the organization servers and the organization switches.

From the collected requirements, it is evident that the organization client base is growing at a high rate. For the organization to achieve its mission and goals it needs to utilize a hierarchical network topology. This type of topology aims at making an organization network modular, manageable, resilient and efficient.

The hierarchical network topology is divided into three tiers which are access, core, and distribution layer. The topology allows organization network administrators to specify the correct software and hardware for the entire organizational network (Kurose & Ross, 2016, p. 34). The topology diagram is as shown in the figure below. The diagram was developed using Netsim. 

Computer System Planning Form for HR and Accounting Department

Router one (R1 in the diagram) is located in the main office in Brisbane Suburb, Router two (R2) is located in Sydney. Switch one connects floor one, switch two connects floor two, switch three connects floor three and switch four connects the fourth floor.

Project hardware requirements. The hardware required for this project are Cisco products. Table 1 lists the hardware and the lists required

There are over five Internet service providers in this country but for this proposal I will compare the best two which the organization can choose from; the two are Telstra and optus.  

Table 4: ISP comparison

ISP	Type of plan	Broadband plan	Cost
Telstra	NBN plan	Home Broadband unlimited bundle-nbn	$89 per month
	NBN plan	Home Broadband unlimited bundle (casual)-nbn	$89 per month
	NBN plan	Home Broadband Unlimited + Streaming Bundle – nbn	$99 per month
	ADSL Plans	Home Broadband Unlimited Bundle (Casual)	$89 per month
Optus	NBN plan	Optus Ultra Entertainment Plan – nbn™ M2M	$90 per month
	ADSL Plans	Optus Reach Ultra Plan	$115 per month

One of the services that can be provided by CAC is system administration. This is a person who is responsible for maintaining computers and server room. They are also responsible for upgrading some of the organization application software. Some of the devices used in system administration include, computer browser, clipping tool to clip worn-out cables, wire cutter, and computer maintenance kit. 

Table 5: Network planning form

		Justification
Are wired connection required	Yes	Wired connection via RJ45 connectors is required to connect the user computers to the organization network
Are wireless connections required	Yes	The access points are used to provide internet connection to employees mobile phones
Wireless standard	802.11ac	This is because this stand provide the fastest maximum speed  and the very best signal range
Firewall required	Yes	To protect unauthorized access of the organization network
ISP connectivity	Yes	To connect the organization to the world wide web
Type of ISP connectivity	Optus	Even though Optus is expensive but according to CAC requirements Optus will provide a speedy cable broadband network. It will also provide and mobile wireless broadband coverage
Internal modem required	Yes	The internal modem acts as a back-up plan during ISP systems downtime
Cables required	Yes	CAT 5e cables are required as attenuation is very minimal
Battery back-up	Yes	A battery back is required in case of power loss

So as to meet CAC’s both technical and design goals, the organization needs to apply Cisco SAFE architecture when design network design. The main goal is to provide the very best practice’s information when implementing secure networks. The SAFE architecture usually uses a modular approach which allows flexibility. It also facilitates troubleshooting and implementation. Cisco SAFE architecture utilizes defense-in-depth approach where multiple layers of protection are strategically located throughout the organization network. Cisco logical topology ought to be divided into three main functional areas which are enterprise campus, service provider edge and enterprise edge. Each of these functional areas contains network modules (Green, 2010, p. 67)  

Table 6: List of Hardware device required

Hardware	Feature
User computers	Installed with windows 7 professional Core i3 processor 500GB hard disk 3 GB RAM
Switch	2900 series 2950: Model
Router	3600 series Model: 3620
File server	4GB RAM 2TB hard disk
Application server	Windows 2012 R2

Different Internet Protocols have been created aiming at supporting communication between user computers. For CAC case, I would propose the use of distance victor protocols and link state protocols. The organization ISP have given CAC class C type of IP address. The Brisbane Suburb 192.168.0.0/24. The number of servers located in this location are two. Table 6 below shows IPV4 notation for the organization.    

Site name		Network Address	Slash notation	First Usable IP address	Last Usable IP address	Usable hosts	Broadcast address
Brisbane Suburb	Floor1	192.168.0.0	/24	192.168.0.1	192.168.0.254	14	192.168.0.255
	Floor 2	192.168.0.0	/23	192.168.1.1	192.168.1.254	510	192.168.1.255
	Floor 3	192.168.0.0	/25	192.168.2.1	192.168.2.254	126	192.168.2.255
	Floor 4	192.168.0.0	/24	192.168.3.1	192.168.3.254	254	192.168.3.255
Sydney		192.168.0.0	/28	192.168.4.1	192.168.4.254	16	194.32.9.255

Table 9: IP Addressing Template

Device	Interface	IP address	Subnet sub mask	Default gateway
Router located in floor 1	Ethernet 0/0	192.168.0.1	255.255.255.0	192.168.1.1
Switch Floor 1	FastEthernet 1/0/1	192.168.1.2	255.255.255.0	192.168.1.1
Switch Floor 2	FastEthernet 1/0/2	192.168.2.3	255.255.255.0	192.168.1.1
Switch Floor 3	FastEthernet 1/0/3	192.168.3.4	255.255.255.0	192.168.1.1
Switch Floor 4	FastEthernet 1/0/4	192.168.4.5	255.255.255.0	192.168.1.1

Public IP address assigned to computers so as to allow direct access over the internet. Private IP address is an address given by InterNIC to organizations to create their own network. CAC can use a combination of these two to address the concern of vulnerability. The organization can use private IP address so that only the organization employees can access files and resources provided by the organization. The organization can use public IP address to address the issue of reflection attack.

The organization ought to use password protection mechanism which ought to be long and memorable by the organization employees. The passwords also ought not to have any relationship and should be changed regularly. All organization data should be treated as confidential   

Table 10: Budget summary

Hardware	Quantity	Unit per Cost ($)	Total Cost ($)
Switch-2900 series	5	5000	25,000
Router-3900	2	4000	8000
Power of Ethernet-pro POE	2	24.99	49.98
RJ 45 plugs * pack of 50	6	49.99	599.88
Cisco ASA 5510 Security Plus Firewall edition	2	2475	4950
Labor ($75 per hour)	100	75	7500
T3 internet Access installation (Monthly fee)	1	100	100
CAT 53 cable (per 500ft)	10	32.95	329.5
Total cost			46529.36

Due to budget consideration, the current physical design as shown in figure one is designed using CAT 5e type of cabling. The current cabling might not facilitate high speed. The organization need to plan for Passive Optical type of cabling. This is a type of cabling which uses optical splitters so as to divide a single optical connection aiming at serving multiple end points.  This means that the organization will in future change the physical design  

The main goal for this project proposal is to upgrade the existing network of CAC. As part of the upgrade the inclusion of physical design and the network topology is shown in the diagram which includes the modification. A security evaluation have also been down in accordance to the laid standards. Implementation of each upgrade will incur cost which is shown in a table. For the WAN design, I would propose the organization to use metro Ethernet WAN technology. This is because it is scalable, enables new applications and it is reachable. It also scales very well with the current standards 100Gps and 40 Gps. CAC need to go for optus ISP as the organization since it has high speed internet connection. Lastly, the implementation of this new network upgrade will provide the much needed benefit of improving security and fault tolerance and achieve organizational goal of modernizing its technological resources.  

References

Green, 2010. Computer Network and Architectures and Protocols. 2nd ed. Newyork: Springer.

Kurose, J. F. & Ross, K. W., 2016. Computer networking: a top-down approach. 3rd ed. Boston: Pearson.