Network Assessments and Re-Designing

This report covers network assessments and re-designing for an Australian data analytic company. It includes sub-netting, assigning IP addresses, researching and sourcing appropriate devices, and cloud computing proposals.

Network Assessments and Re-Designing
NETWORK ASSESSMENTS AND RE-DESIGNING
By (Student’s names)
[Class Name]
[Professors Name]
[University Name]
[City and town where the university is located]
[Date]

Network Assessments and Re-Designing
Table of Contents
PART 1 - Executive summary.....................................................................................................................3
PART 2 - Network diagram.........................................................................................................................4
PART 3 – Sub-netting the network and assigning IP addresses to devices..................................................4
Subnetting................................................................................................................................................5
Sydney branch.....................................................................................................................................5
Melbourne branch................................................................................................................................6
Brisbane branch...................................................................................................................................7
Canberra branch...................................................................................................................................8
Adelaide branch...................................................................................................................................9
Hobart branch......................................................................................................................................9
PART 4 - Researching and sourcing appropriate devices..........................................................................12
Executive summary...............................................................................................................................12
Weighted Decision Matrix - hardware resource requirements analysis.................................................12
Budget...................................................................................................................................................14
PART 5 - Cloud computing proposal........................................................................................................14
To use desktop Environment provided by the Cloud service provider (such as Amazon).....................15
To use desktop environment provided by the private cloud infrastructure based in Sydney..................15
To Continue using workstations............................................................................................................16
Recommendations.................................................................................................................................16
Reference...................................................................................................................................................17

Network Assessments and Re-Designing
PART 1 - Executive summary
This is a report about an Australian data analytic company that deals with scientific analysis in
Australia and it is currently having network but the management team had requested the network
to be done assessments for it to be re-designed to allow the new network to be designed and
installed in order to accommodate the new branches of the company that had been opened and
thus requiring to be fitted with new network equipments.
This project is done with a purpose of designing the new network, allocating the IP address to the
network subnets and computation of the estimated budgets for the new network installation and
implementation.
The project covers a wide scope where various activities are involved which includes sub-netting
then new networks branches where each branch is assigned a unique IP address, identifying the
network hardware devices to use in network installation, approximating the expected network’s
budget and also to analyze the various proposals for adopting the cloud computing and thus the
management will be able to prepare on the network installation process.
In this project there are various objectives that are aimed to be achieved which includes:
i. To provide the internet access to the company’s entire branches.
ii. To provide the wireless network access to the company’s branches local area
network.
iii. To provide the shared databases Facility.
iv. To provide the web-services to the network users and staffs.
v. To provide the back-up Fa cilities to the network users to backup data and
information.
vi. To provide the cloud computing services to the network users.

Network Assessments and Re-Designing
PART 2 - Network diagram
PART 3 – Sub-netting the network and assigning IP addresses to devices
The below table shows the number of the IP addresses that are required in the various network
subnets where each location is allocated the IP addresses depending on the number of work
stations.
Location Workstations WLAN addresses LAN ADDRESSES
Sydney 400x2 =30 =800
Melbourne 70 x2 =14 =140
Brisbane 150 x2 =14 =300
Canberra 50 x2 - =100
Adelaide 80 x2 - =160
Hobart 15 x2 - =30

Network Assessments and Re-Designing
Subnetting
The sub-netting is a process of assigning the IP addresses to the network sections that are in
various branches of the company, where the IP address space purchased by the company is
130.0.0.0/20 which is a class B network address and it will be used to assign the subnets IP
addresses, in order to assign the accurate number of IP addresses the Total Hosts are calculated
where each host will require a unique IP address , subnet masks, broadcasts address and the
address ranges, however the subnet addresses to be assigned in each subnet will be able to allow
network expansion since the Total Hosts in the LANs is expended to double in the course of five
years.
Below is the calculation of the subnets IP addresses.
Sydney branch
The branch has 800 workstations that are located in the LAN and there are 30 IP addresses that
are in the WAN and therefore a total of 830 IP addresses are required.
The Total Hosts is 830 therefore,
Total Hosts = 830
2k = (830 + 4).
210 = (1024>834).
Network’s bits = 32 – 10 = 22
Network’s IP-Addresses = 130.0.0.0 /22
Broadcast’s IP-Addresses: - 130.0.3.255
Subnet masks = 255.255.252.0
Range of IP addresses = 130.0.0.1- 130.0.3.254
Sydney branch LAN subnet
The Total Hosts is 800 therefore,
Total Hosts = 800
2k = (800 + 2).
210 = (1024> 802)
Network’s bits = 32 – 10 = 22

Network Assessments and Re-Designing
Network’s IP-Addresses = 130.0.0.0 /22
Broadcast’s IP-Addresses: - 130.0.3.38
Range of IP addresses = 130.0.0.1-130.0.3.37
Subnet masks = 255.255.252.0
Sydney branch WAN subnet
The Total Hosts is 30 therefore,
Total Hosts = 30
2k = (30 + 2).
210 = (1024> 32)
Network’s bits = 32 – 10 = 22
Network’s IP-Addresses = 130.0.3.39/22
Broadcast’s IP-Addresses: - 130.0.3.72
Subnet masks = 255.255.252.0
Range of IP addresses =130.0.3.40-130.0.3.71 (Behrouz 2016).
Melbourne branch
The branch has 140 workstations that are located in the LAN and there are 14 IP addresses that
are in the WAN and therefore a total of 154 IP addresses are required.
The Total Hosts is 154 therefore,
Total Hosts = 154
2k = (154 + 2).
28 = (256> 156)
Network’s bits = 32 – 8 = 24
Network’s IP-Addresses = 130.0.4.0 /24
Broadcast’s IP-Addresses: - 130.0.4.255
Subnet masks = 255.255.255.0
Range of IP addresses =130.0.4.1-130.0.4.254
Melbourne branch LAN subnet
The Total Hosts is 140 therefore,

Network Assessments and Re-Designing
Total Hosts = 140
2k = (140 + 2).
28 = (256> 142)
Network’s bits = 32 – 8 = 24
Network’s IP-Addresses = 130.0.4.0 /24
Broadcast’s IP-Addresses: - 130.0.4.141
Range of IP addresses =130.0.4.1 -130.0.4.140
Subnet masks = 255.255.255.0
Melbourne branch WAN subnet
The Total Hosts is 14 therefore,
Total Hosts = 14
2k = (14 + 2).
28 = (256> 16)
Network’s bits = 32 – 8 = 24
Network’s IP-Addresses = 130.0.4.142 /24
Broadcast’s IP-Addresses: - 130.0.4.160
Range of IP addresses =130.0.4.143-130.0.4.159
Subnet masks = 255.255.255.0
Brisbane branch
The branch has 300 workstations that are located in the LAN and there are 14 IP addresses that
are in the WAN and therefore a total of 316 IP addresses are required.
The Total Hosts is 316 therefore,
Total Hosts = 316
2k = (316 + 2).
29 = (512> 318)
Network’s bits = 32 – 9 = 23
Network’s IP-Addresses = 130.0.6.0/23
Broadcast’s IP-Addresses: - 130.0.7.255
Range of IP addresses = 130.0.6.1- 130.0.7.254

Network Assessments and Re-Designing
Subnet masks = 255.255.254.0
Brisbane branch LAN subnet
The Total Hosts is 300 therefore,
Total Hosts = 300
2k = (300 + 2).
29 = (512> 302)
Network’s bits = 32 – 9 = 23
Network’s IP-Addresses = 130.0.6.0/23
Broadcast’s IP-Addresses: - 130.0.7.46
Range of IP addresses = 130.0.6.1- 130.0.7.45
Subnet masks = 255.255.254.0
Brisbane branch WAN subnet
The Total Hosts is 14 therefore,
Total Hosts = 14
2k = (14 + 2).
29 = (512> 16)
Network’s bits = 32 – 9 = 23
Network’s IP-Addresses = 130.0.7.47/23
Broadcast’s IP-Addresses: - 130.0.7.62
Range of IP addresses = 130.0.7.48- 130.0.7.61
Subnet masks = 255.255.254.0
Canberra branch
Canberra branch LAN subnet
The Total Hosts is 100 therefore,
Total Hosts = 100
2k = (100 + 2).
27 = (128> 102)
Network’s bits = 32 – 7 = 25

Network Assessments and Re-Designing
Network’s IP-Addresses = 130.0.8.0 /25
Broadcast’s IP-Addresses: - 130.0.8.101
Subnet masks = 255.255.255.128
Range of IP addresses =130.0.8.1- 130.0.8.100
Adelaide branch
Adelaide branch LAN subnet
The Total Hosts is 160 therefore,
Total Hosts = 160
2k = (80 + 2).
28 = (256> 160)
Network’s bits = 32 – 8 = 24
Network’s IP-Addresses = 130.0.9.0 /24
Broadcast’s IP-Addresses: - 130.0.9.127
Subnet masks = 255.255.255.128
Range of IP addresses =130.0.9.1- 130.0.9.160
Hobart branch
Hobart branch LAN subnet
The Total Hosts is 30 therefore,
Total Hosts = 32
2k = (32 + 2).
26 = (64> 34)
Network’s bits = 32 – 6= 26
Network’s IP-Addresses = 130.0.10.0/26
Broadcast’s IP-Addresses: - 130.0.10.35
Range of IP addresses = 130.0.10.1- 130.0.10.34
Subnet masks = 255.255.255.192

Network Assessments and Re-Designing
Table 1 Subnets (WAN and LAN subnets)
Subnet name subnet
address
subnet
mask
first
useable
address
last useable
address
broadcast
address
static
address
range
DHCP
address range
Sydney LAN 130.0.0.0 /22 130.0.0.1 130.0.3.37 130.0.3.38 130.0.0.1-
130.0.0.2
130.0.0.3-
130.0.3.37
Sydney WAN 130.0.3.39 /22 130.0.3.40 130.0.3.71 130.0.3.72 130.0.3.40
-
130.0.2.41
130.0.2.42-
130.0.2.71
Melbourne LAN 130.0.4.0 /24 130.0.4.1 130.0.4.140 130.0.4.141 130.0.4.1-
130.0.4.2
130.0.4.3-
130.0.4.140
Melbourne WAN 130.0.4.142 /24 130.0.4.14
3
130.0.4.159 130.0.4.160 130.0.5.1-
130.0.5.2
130.0.5.3-
130.0.5.159
Brisbane LAN 130.0.6.0 /23 130.0.6.1 130.0.7.45 130.0.7.46 130.0.7.1-
130.0.7.2
130.0.6.3-
130.0.7.45
Brisbane WAN 130.0.7.47 /23 130.0.7.48 130.0.7.61 130.0.7.62 130.0.7.48
-
130.0.7.49
130.0.7.50-
130.0.7.61
Canberra LAN 130.0.8.0 /25 130.0.8.1 130.0.8.100 130.0.8.101 130.0.8.1-
130.0.8.2
130.0.8.3-
130.0.8.100
Adelaide LAN 130.0.9.0 /24 130.0.9.1 130.0.9.160 130.0.9.161 130.0.9.1-
130.0.9.2
130.0.9.3-
130.0.9.160
Hobart LAN 130.0.10.0 /26 130.0.10.1 130.0.10.34 130.0.10.35 130.0.10.1
-
130.0.10.2
130.0.10.3-
130.0.10.36
(Douglas 2017).

Network Assessments and Re-Designing
Table 2 Router interFa ces.
Location interFa ce IP address subnet mask
Sydney Fa 1/1 130.0.0.1 /22
Sydney Fa 0/1 130.0.3.40 /22
Sydney Fa 1/2 130.0.11.1 /28
Sydney Fa 1/3 130.0.13.1 /28
Sydney Fa 1/4 130.0.14.1 /28
Sydney Fa 1/5 130.0.15.1 /28
Sydney Fa 1/6 130.0.16.1 /28
Melbourne Fa 1/1 130.0.4.1 /24
Melbourne Fa 0/1 130.0.4.143 /24
Melbourne Fa 1/2 130.0.13.2 /28
Melbourne Fa 1/3 130.0.17.1 /28
Melbourne Fa 1/4 130.0.18.1 /28
Melbourne Fa 1/5 130.0.19.1 /28
Brisbane Fa 0/1 130.0.6.1 /23
Brisbane Fa 1/1 130.0.7.48 /23
Brisbane Fa 1/2 130.0.14.2 /28
Canberra Fa 0/1 130.0.8.1 /25
Canberra Fa 1/1 130.0.15.2 /28
Canberra Fa 1/2 130.0.17.2 /28
Adelaide Fa 0/1 130.0.9.1 /24
Adelaide Fa 1/1 130.0.18.2 /28
Hobart Fa 0/1 130.0.10.1 /26
Hobart Fa 1/1 130.0.12.0 /28
Hobart Fa 1/2 130.0.19.2 /28
(Forouzan 2014).
Table 3 Servers
Location server name IP address subnet mask
Sydney Web server 130.0.11. /28

Network Assessments and Re-Designing
branch 2
Sydney
branch
DB server 130.0.11.
2
/28
Hobart branch Back-up server1 130.0.12.
1
/28
Hobart branch Back-up server2 130.0.12.
2
/28
Hobart branch Back-up server3 130.0.12.
3
/28
PART 4 - Researching and sourcing appropriate devices.
Executive summary
The implementations of the proposed network there are various devices that will require to be
interconnected to form the network, these devices are associated with some costs and thus the
management require to get the approximate total cost that might be incurred to fully install the
proposed network, the items will therefore be acquired using the procurement’s plan that will be
set to achieve the following goals.
i. To make sure the devices to be used will be appropriate for accommodating all
workstations that are targeted to be used in the whole network branches and wireless
networks.
ii. To make sure all the selected devices are efficient and able to provide best service to
the network users.
iii. To make sure all devices selected are durable and they able to serve the users without
any fault arising.
iv. To make sure that during the devices acquisition processes the budget sets of $10000
is not exceeded.

Network Assessments and Re-Designing
Weighted Decision Matrix - hardware resource requirements analysis
Matrix attributes justification.
To select the network devices to be used in the proposed network installation which include the
switches, routers and wireless access devices the various items are to be considered where they
will be selected after they are analyzed, there are various devices attributes that will be put into
consideration and as discussed here below.
i. Feasibility: The device feasibility measures how easy the device is to use and to
install in a network and this contributes to 15% of the total.
ii. Efficiency: The device efficiency measure level of efficiency of the selected devices
in the proposed network without any downtimes experiences and this will contribute
to 20% of the total.
iii. Port’s Number: The number of ports will be another factor to consider where each
device will be able to connect to number of network devices depending on the total
number of ports and thus the more the ports the better the device since it will support
expansions of the network and which contributes to 20% of the total.
iv. Durability: The network durability is another attribute which is very essential and it
determines the period that the device can be used in the proposed network without
failing or need of replacement and this will weigh 25% of the total.
v. Price. This is the other attribute that will be considered that will determine the best
price of the selected devices to be acquired for network implementations and this will
weigh 20% of the total.
Weighted Decision Matrix
a. Router’s Weighted Decision Matrix (WDM).
Router’s Weighted Decision Matrix
Devices types and their scores
Attributes
Weights
(Percentage)
Cisco
2901
Cisco
2911
Cisco Cisco Cisco
2621-XMCGR-1240 2620-XM
Feasibility 15 13 12 11 14 14
Efficiency 20 18 16 14 19 18
Port’s Number 20 14 17 16 17 19
Durability 25 21 22 24 20 23

Network Assessments and Re-Designing
Price 20 19 17 18 19 16
TOTAL
SCORES 100 85 84 83 89 90
(Tom 2015).
b. Switches’ Weighted Decision Matrix (WDM).
Switches’ Weighted Decision Matrix
Devices types and their scores
Attributes
Weights
(Percentage)
Cisco Cisco
2950-24
Cisco Cisco Cisco-
2960-24-TT 2950-T-24 3560-24-PS 3650-24-PS
Feasibility 15 13 15 12 14 13
Efficiency 20 17 14 16 18 17
Port’s Number 20 17 14 17 19 15
Durability 25 21 23 24 21 22
Price 20 17 14 18 17 19
TOTAL SCORES 100 85 80 87 89 86
c. Wireless access device’s Weighted Decision Matrix (WDM).
Wireless access device’s Weighted Decision Matrix
Devices types and their scores
Attributes
Weights
(Percentage
)
Cisco
WRT-
300N
Cisco
3702i
Cisco WLC-
2504
Cisco WLCPT Cisco DLC-100
Feasibility 15 14 12 13 14 14
Efficiency 20 18 19 18 16 17
Port’s Number 20 11 15 15 19 13
Durability 25 24 22 21 24 16
Price 20 18 18 19 18 14
TOTAL
SCORES 100 85 86 86 91 74
Budget
HARDWARES NAMES TYPES NUMBER
REQUIRED
UNIT’S PRICE TOTAL COSTS
Routers Cisco 2621-XM 7units $261 $1827
Switches Cisco 3560-24-PS 41units $170 $6970

Network Assessments and Re-Designing
Wireless access devices Cisco WLCPT 3units $401 $1203
$10000
PART 5 - Cloud computing proposal
The company’s management is considering the adoption of the cloud computing services where
the company’s resources and services will be moved to cloud , this proposal is arrived at in order
to boost the level of network security ,enable the access of resources remotely by the staffs and
overall reduction of cost of operation in the company, the company had been provided with three
major viable options and they are analyzed to determine their acquisition and running costs in
order to settle on the best option as below.
To use desktop Environment provided by the Cloud service provider (such as Amazon)
In this proposal the workstations in the company will be fully replaced using some thin clients
which will lead to the minimum costs of hardware and service as shown in the table below.
i. Costs.
Devices needed units Unit’s Hardware/ service cost Electricity’s
cost
Total costs
Virtual machine 765
units
$590.59 0 $451,801.35
ii. Security level.
This proposal will ensure enough security for the company’s facilities and resources that will be
hosted in the vendor’s servers, however the company management will have limited access and
control of the server but the stored information will be accessible by third party who includes the
vendor’s staffs which pauses insecurity to the company’s resources and sensitive data (William
2014).
To use desktop environment provided by the private cloud infrastructure based in Sydney
In the second proposal the company is required to replace each network’s workstation in the
whole network with a private cloud infrastructure where the desktop environment will installed
at Sydney location and the network users will then access the required information from the
desktop environment using a thin client’s devices.

Network Assessments and Re-Designing
i. Costs.
The table below summarizes the costs of adopting this proposal.
Devices needed units Unit’s Hardware/ service cost Electricity’s cost Total costs
Virtual –Machines 765unit
s
$109.0 0 $83,385
Workstations 1units $850 230kWh annually $850
WHOLE COSTS $84,235
ii. Security status.
In this proposal the private cloud service provider will be used where a desktop environment will
be set up in Sydney branch will be secure because the management team will be having a direct
control of the server and thus they can manage their information easily without any possible
interference from the third party and thus has high security level.
To Continue using workstations
The third proposal is the to use the current network where the workstations will be used in the
entire network branches however this option will incur the power costs and the workstations
hardware and services costs as summarized in the table below.
i. Cost.
Devices needed units Unit’s Hardware/ service cost Electricity’s
cost
Total costs
Workstations 765units $ 850 230x765kWh $ 650,250
WHOLE COST $ 650,250
ii. Security status.
The current network proposal is more secure where the management team is able to access and
control the information and all the third party groups are restricted to access the company’s
information and therefore it is able to provide more and better security.
Recommendations
After the analysis of the three proposals options I recommend the company to adopt the second
option where the desktop environment will be in-housed at Sydney branch by the private cloud

Network Assessments and Re-Designing
service infrastructure company, this is because it will have low running costs compared to the
others, the power consumption is negligible and the company network security will be high since
they are able to manage the information and any unauthorized access is restricted.
Reference
Andrew, S. (2015) Computer Networks.2nd edn. New York: Prentice Hall.
Behrouz ,A.(2016) Data Communication and Networking. 4th edn.New York: McGraw-Hill
Education.
Douglas,C.(2017) Internetworking with TCP/IP, Volume1.1st edn.California: Addison-Wesley
Professional.
Forouzan,I.(2014) Computer Networks: A Top – Down Approach.5th edn.New York: McGraw-
Hill.
Tom ,C.(2015) IPv6 Address Planning: Designing an Address Plan for the Future.3rd edn. San
Francisco: O'Reilly Media.
William,S.(2014) Data and Computer Communication. 2nd edn. New Delhi: Tata McGraw Hill.