Advanced Network Design BN321: Network Design and IP Addressing

This report details the network design and IP addressing scheme for ABC I.T., a company needing to support 400 students across six computer labs, six classrooms, staff offices, and a library. The proposed network uses a three-layered hierarchical architecture with a router, multilayer switch, and layer 2 switches, providing both wired and wireless connectivity. Security measures include IPsec VPN tunnels, packet filter firewalls, and WPA2-PSK for WLAN. The report includes an IP addressing table utilizing CIDR for efficient address allocation, along with hardware and software requirements for the network implementation. It emphasizes the importance of network design and configuration in achieving effective and efficient network performance.

Running head: NETWORK DESIGN AND IP ADDRESSING
Network Design and IP Addressing
Name of the Student
Name of the University
Author Note

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NETWORK DESIGN AND IP ADDRESSING
Summary
According to several reports throughout the century, the network designs and the
underlying configuration of the network devices and routing protocols play an important
factor in determining the effectiveness and efficiency of networks after implementation.
First the report proposes the network of ABC I.T. through such network designs and IP
addressing. The report begins with the project scope and then presents the network design.
Then the cables and network security is detailed. After this the IP addressing table is given.
Then the requirements for the network is provided after which the report ends with
conclusions.

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NETWORK DESIGN AND IP ADDRESSING
Table of Contents
Introduction...........................................................................................................................................3
Project Scope.........................................................................................................................................3
Network Design.....................................................................................................................................4
Network Security...................................................................................................................................5
Cables....................................................................................................................................................5
IP addressing.........................................................................................................................................5
Hardware and Software Requirements.................................................................................................8
Conclusion.............................................................................................................................................8
References...........................................................................................................................................10

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NETWORK DESIGN AND IP ADDRESSING
Introduction
The following report tries to highlight the role that network designs and the
underlying configuration of the network devices and routing protocols play an important
factor in determining the effectiveness and efficiency of networks after implementation. The
report proposes the network of ABC I.T. through such network designs and IP addressing.
The report begins with the project scope and then presents the network design. Then the
cables and network security is detailed. After this the IP addressing table is given. Then the
requirements for the network is provided after which the report ends with conclusions.
Project Scope
The network of the organization ABC I.T. must be able to server 400 students.
The network is to accommodate connectivity for six computer labs and six classrooms along with
offices for staff and administrators and the library.
The network must be able to provide WLAN connectivity for the wireless devices present in the
computer labs and classrooms.
The network should be able to provide secured network access for both wired and wireless
networks.
IP addressing and subnet classification for the network needs to be provided.
Hardware and software specific requirements of the network needs to be given.

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NETWORK DESIGN AND IP ADDRESSING
Network Design
Figure 1: Network Design Diagram
The above diagram represents the overall network design of the company ABC I.T. and
shows how the internet access gets provided to the individual devices that are connected to the
network [5]. The network uses a router to obtain the internet access from the ISP or Internet Service
Provider. In this router various network specific configurations like DHCP pools get created for
automatically assigning the IP addresses to the respective devices. The router then connects with the
multilayer switch which thereafter connects the four layer 2 switches. The layer 2 switches are

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NETWORK DESIGN AND IP ADDRESSING
responsible for directly connecting the devices present in the network. Thus the network is seen to
follow a three layered hierarchical network architecture with the router forming the core layer, the
multilayer switch forming the distribution layer and the layer 2 switches forming the access layer [1].
Thee multilayer switch is also connected to the switch that connects the wireless access point thus
setting up the WLAN network. This WLAN network serves devices like IP phones as well as other
wireless devices being carried by students, staff as well as administrators. The multilayer switch uses
switch port mode trunk while layer 2 switches use switch port mode access to connect the devices.
Network Security
The network of the company ABC I.T. provides secured wired as well as wireless
network connectivity through built-in security measures present within the router and
wireless access point [3]. This includes the abilities of setting up IPsec VPN tunnels and
packet filter firewall through the company network router between itself and the router of the
ISP. The WLAN network gets secured through the WPA2 protocol where predefined WPA2-
PSK keys generated using AES encryption is shared with the organizational members. This
ensures no malicious entity from outside the organization is able to access the company
network.
Cables
The router uses serial cables to connect with ISP router, straight through Gigabit
Ethernet cable ti connect the multilayer switch [2]. The multilayer switch uses crossover fast
Ethernet cables for connecting the layer 2 switches. The layer 2 switches uses straight
through cables to connect the devices connected to the network.
IP addressing
For IP address allocation to the various subnets, the network is using CIDR IP addressing
scheme [6]. This addressing scheme is chosen over classful IP address since this provides smoother
transitions with every change in CIDR mask which results significantly less wastage of IP address
space.
For the subnet of the wireless network
Since CIDR mask is 24 so number of borrowed bits become 0
Therefore number of networks = 20 = 1

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NETWORK DESIGN AND IP ADDRESSING
Hence number of addresses are 256
And number of host IP addresses = 254
For Computer Lab 1, CIDR mask is 27 so number of borrowed bits are 3
Therefore number of networks = 23 = 8
Hence number of available IP addresses are 254 – 224 = 30
Similarly the rest of the subnets are calculated and shown in the following table.
Subnet
Name
Need
ed
Size
Allocat
ed Size Address
CID
R
Mas
k
Subnet Mask Assignable
Range Broadcast
Wireless 250 254 192.168.8.0 /24 255.255.255.
0
192.168.8.1
-
192.168.8.2
54
192.168.8.2
55
Lab 1 25 30 192.168.9.0 /27 255.255.255.
224
192.168.9.1
-
192.168.9.3
0
192.168.9.3
1
Lab 2 25 30 192.168.9.3
2 /27 255.255.255.
224
192.168.9.3
3 -
192.168.9.6
2
192.168.9.6
3
Lab 3 25 30 192.168.9.6
4 /27 255.255.255.
224
192.168.9.6
5 -
192.168.9.9
4
192.168.9.9
5
Lab 4 25 30 192.168.9.9
6 /27 255.255.255.
224
192.168.9.9
7 -
192.168.9.1
26
192.168.9.1
27
Lab 5 25 30 192.168.9.1
28
/27 255.255.255.
224
192.168.9.1
29 -
192.168.9.1
59

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NETWORK DESIGN AND IP ADDRESSING
192.168.9.1
58
Lab 6 25 30 192.168.9.1
60 /27 255.255.255.
224
192.168.9.1
61 -
192.168.9.1
90
192.168.9.1
91
Staff and
Administrati
on
15 30 192.168.9.1
92 /27 255.255.255.
224
192.168.9.1
93 -
192.168.9.2
22
192.168.9.2
23
Library 10 14 192.168.9.2
24 /28 255.255.255.
240
192.168.9.2
25 -
192.168.9.2
38
192.168.9.2
39
Classroom 1 4 6 192.168.9.2
40 /29 255.255.255.
248
192.168.9.2
41 -
192.168.9.2
46
192.168.9.2
47
Classroom 2 4 6 192.168.9.2
48 /29 255.255.255.
248
192.168.9.2
49 -
192.168.9.2
54
192.168.9.2
55
Classroom 3 4 6 192.168.10.
0 /29 255.255.255.
248
192.168.10.
1 -
192.168.10.
6
192.168.10.
7
Classroom 4 4 6 192.168.10.
8 /29 255.255.255.
248
192.168.10.
9 -
192.168.10.
14
192.168.10.
15
Classroom 5 4 6 192.168.10.
16 /29 255.255.255.
248
192.168.10.
17 -
192.168.10.
22
192.168.10.
23

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NETWORK DESIGN AND IP ADDRESSING
Classroom 6 4 6 192.168.10.
24 /29 255.255.255.
248
192.168.10.
25 -
192.168.10.
30
192.168.10.
31
Hardware and Software Requirements
The network requirements can be divided into hardware and software specific requirements
[4]. The hardware requirements of the network can be:
1 Router preferably Cisco 2900 series
1 Multilayer switch preferably Cisco 3600 series
4 Layer 2 switches preferably Cisco 2900 series
6 Lenovo ThinkServer TS150
181 Workstations preferably Lenovo Thinkstation D20
12 IP phones preferably Grandstream GS-GXP2160
6 Display Monitors preferably from Viewsonic
6 Whiteboards preferably from VIZ-PRO
The software requirements of the network can be:
Firmware applications for Cisco routers, switches and wireless access point
Firmware applications for IP Phones, Display Monitors and Whiteboards
Windows Server 2016
Windows 10 Professional
Conclusion
The following report tries to highlight the role that network designs and the
underlying configuration of the network devices and routing protocols play an important
factor in determining the effectiveness and efficiency of networks after implementation. The
report proposes the network of ABC I.T. through such network designs and IP addressing.
The report begins with the project scope and then presents the network design. Then the

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NETWORK DESIGN AND IP ADDRESSING
cables and network security is detailed. After this the IP addressing table is given. Then the
report ends after providing requirements for the network.

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NETWORK DESIGN AND IP ADDRESSING
References
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, 2015.
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transmitter through physical-fingerprinting of controller area network. In 2017 IEEE Workshop on
Information Forensics and Security (WIFS)(pp. 1-6). IEEE. , 2017,
[3] R. Govindan, I. Minei, M. Kallahalla, B. Koley, and A. Vahdat, August. Evolve or die: High-
availability design principles drawn from googles network infrastructure. In Proceedings of the 2016
ACM SIGCOMM Conference (pp. 58-72). ACM. , 2016,
[4] S. Abdelwahab, B. Hamdaoui, M. Guizani, and T. Znati, , 2016. Network function virtualization in
5G. IEEE Communications Magazine, 54(4), pp.84-91.
[5] S. Jeschke, C. Brecher, T. Meisen, D. Özdemir, and T. Eschert, Industrial internet of things and
cyber manufacturing systems. In Industrial Internet of Things (pp. 3-19). Springer, Cham., 2017.
[6] W. Shang, Y. Yu, R. Droms, and L. Zhang, Challenges in IoT networking via TCP/IP
architecture. Technical Report NDN-0038. NDN Project. , 2016.