Internetworking with TCP/IP: OSI model, TCP/IP model, ARP, and network design

This document covers OSI model, TCP/IP model, ARP, and network design. It includes hands-on experience with subnetting and IP addressing. It also provides a report on network design for Foreshore IT Solution. The document is a valuable resource for students studying internetworking with TCP/IP.

Running head: INTERNETWORKING WITH TCP/IP
Internetworking with TCP/IP
Assessment No
Assessment Title
Student Name & ID
Subject Name and Code
Student Email Address

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INTERNETWORKING WITH TCP/IP
Table of Contents
Question 1 Answer:.........................................................................................................................2
Question 2 Answer:.........................................................................................................................3
Hands on Project 2.3:.......................................................................................................3
Hands on Project 2.5:.......................................................................................................3
Question 3 Answer:.........................................................................................................................4
Question 4 Answer: Report.............................................................................................................5
Introduction......................................................................................................................5
Network design................................................................................................................6
Justification......................................................................................................................6
Network Address solution...............................................................................................7
Conclusion.....................................................................................................................10
Bibliography..................................................................................................................................11

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INTERNETWORKING WITH TCP/IP
Question 1 Answer:
The OSI reference model is developed by the international standard organization and for
standardizing the different protocols applied in the computer network for the transmission of data
packets. It uses seven layers for communication and increases the interoperability between the
devices and the network. The OSI model guarantees the delivery of data packets using the UDP
protocol.
The TCP/IP model operates using the five layers because the presentation and the session
layers of the OSI model are combined to form the application layer of the TCP/IP model. The
physical and the data link is also combined for the simplification of the operation of the layers.
The delivery of the data packets using the UDP protocol is not guaranteed by the TCP/IP model.
When working and describing a component of the network the OSI model is applied
because it is a theoretical model and all the other network models are developed from the OSI
reference model.

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Question 2 Answer:
Hands on Project 2.3:
Hands on Project 2.5:
IP Address Class C 192.168.0.1
Subnet mask Subnet bits Mask Bits Hosts per
subnet
Host
Address
range
Broadcast
Address
255.255.255.192 2 26 62 192.168.0.1 -
192.168.0.62
192.168.0.63

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INTERNETWORKING WITH TCP/IP
IP address Class A 10.0.0.1
Subnet bits Maximum
subnets
Mask Bits Hosts per
subnet
Host
Address
range
Broadcast
Address
8 256 16 65534 10.0.0.1 -
10.0.255.254
10.0.255.255
Question 3 Answer:
Address Resolution protocol (ARP) –
It is a network protocol that is applied in a network for recording the IP address with the
MAC address for recognizing a host connected in the network. During the communication
between two hosts connected in the network an ARP request is sent by requesting the interface to
match with the IP address and the response is received with the IP and the MAC address.
ARP cache is a table containing the IP address and its MAC address to maintain relation
with the host and uniquely identify it in the network.

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Question 4 Answer: Report
Introduction
As a solution architect of the Foreshore IT Solution a medium sized network is proposed
for the company for supporting the expansion of the organizational network. The network is
designed for the city of Adelaide using the private IP address 10.0.0.0 for interconnecting the six
branch office and enabling communication between each other. Currently the company uses a
single subnet and it is divided into six subnet for configuring the network devices for each of the
offices. The network is designed for 1200 workstations by analyzing the business rules and
aligning it for the development of the network. For the development of the network solution a
simple addressing solution is prepared for the company and the hosts are assigned with the
assignable range of the IP address for enabling communication with the nodes connected in the
other subnet of the network.

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Network design
Figure 1: Network Design
(Source: created by author)
Justification
The network is designed for Foreshore IT solution according to the subnet mask created
for development of the network. Each of the department of the company are connected with each
other using the serial interface of the router and the link is a fiber optic medium. The fiber optics
medium supports larger bandwidth for sending and receiving larger volume of data in the
network. The network needs to be managed and the network administrator is responsible for the
maintenance of the network device. The router is configured with EIGRP protocol for
minimizing the unwanted traffic in the network. The EIGRP protocol consumes very less
resources for its normal operation and the changes in the network can be accommodated by
propagating the changes in the routing table and reducing the load on the network. It can also be
used for permitting or denying a group of IP address to connect with the router interface. The

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INTERNETWORKING WITH TCP/IP
future changes in the network if there is an increase in the number of host in the network can be
accommodated without changing the router communication protocol for the development of the
network solution.
Network Address solution
Address Block – 10.0.0.0 /21
Number of available IP address – 1130
Number of IP address available – 2036
Subnet Name Neede
d Size
Allocate
d Size
Mas
k
Dec Mask Addre
ss
Assignabl
e Range
Broadcas
t
Head_Office 60 62 /26 255.255.25
5.192
10.0.7.
128
10.0.7.129
-
10.0.7.190
10.0.7.19
1
Finance_office 260 510 /23 255.255.25
4.0
10.0.4.
0
10.0.4.1 -
10.0.5.254
10.0.5.25
5
IT_Call
Centre
520 1022 /22 255.255.25
2.0
10.0.0.
0
10.0.0.1 -
10.0.3.254
10.0.3.25
5
Research_and
_Development
_Office
120 126 /25 255.255.25
5.128
10.0.7.
0
10.0.7.1 -
10.0.7.126
10.0.7.12
7
Marketing_De
partment
40 62 /26 255.255.25
5.192
10.0.7.
192
10.0.7.193
-
10.0.7.25

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10.0.7.254 5
Information_T
echnology
130 254 /24 255.255.25
5.0
10.0.6.
0
10.0.6.1 -
10.0.6.254
10.0.6.25
5
b.
The network design is created to support the increase in the host per building, the
configuration of the interface of the router needs to be changed for allocating 1024 number of IP
address to the PC connected in the network. The current subnet plan would fail because it is
designed for 1200 number of hosts and if there is an increase a new addressing plan should be
calculated. For the implementation of the new subnet configuration for allocating 1024 number
of IP address the IP address inputted in the interface should be replaced with the address
calculated from the new subnet plan.
The configuration of the interface of the router should be cleared and the new IP address should
be inputted for the arrangement of the new network configuration.
Subnet Name Alloca
ted
Size
Need
ed
Size
Addr
ess
Dec
Mask
Ma
sk
Assigna
ble
Range
Broadc
ast
Finance_office 2046 1024 10.0.0
.0
255.255.2
48.0
/21 10.0.0.1
-
10.0.7.2
54
10.0.7.2
55

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Head_Office 2046 1024 10.0.8
.0
255.255.2
48.0
/21 10.0.8.1
-
10.0.15.
254
10.0.15.
255
IT_Call Centre 2046 1024 10.0.1
6.0
255.255.2
48.0
/21 10.0.16.
1 -
10.0.23.
254
10.0.23.
255
Information_Technology 2046 1024 10.0.2
4.0
255.255.2
48.0
/21 10.0.24.
1 -
10.0.31.
254
10.0.31.
255
Marketing_Department 2046 1024 10.0.3
2.0
255.255.2
48.0
/21 10.0.32.
1 -
10.0.39.
254
10.0.39.
255
Research_and_Developm
ent_Office
2046 1024 10.0.4
0.0
255.255.2
48.0
/21 10.0.40.
1 -
10.0.47.
254
10.0.47.
255

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INTERNETWORKING WITH TCP/IP
Conclusion
For the success of the network design the selection of the network topology is important
and for the configuration of the routers deployed for connecting the branches of the company.
The configuration of the router with the DHCP address would help to automatically assign the IP
address to the hosts connected in the network. The switches must be configured with VLAN such
that the congestion in the network can be reduced and the efficiency would be increased. The
router should be configured with a username and password for protecting the configuration from
external access and increase the security of the network. A simple addressing solution is
prepared for the company and it should be followed for the configuration of the router and the
other network device interface for enabling the hosts connected in the branch office to send and
receive data packets in the network.

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INTERNETWORKING WITH TCP/IP
Bibliography
Bishop, S., Fairbairn, M., Norrish, M., Ridge, T., Sewell, P., Smith, M., & Wansbrough, K.
(2015). Engineering with Logic: Rigorous Specification and Validation for TCP/IP and
the Sockets API. URL: http://www. cl. cam. ac. uk/pes20/Netsem/paper3. pdf.
Comer, D. (2014). Fundamentals Of Computer Networking And Internetworking.
Edwards, J., & Bramante, R. (2015). Networking self-teaching guide: OSI, TCP/IP, LANs,
MANs, WANs, implementation, management, and maintenance. John Wiley & Sons.
Goralski, W. (2017). The illustrated network: how TCP/IP works in a modern network. Morgan
Kaufmann.
Shah, M., Soni, V., Shah, H., & Desai, M. (2016, March). TCP/IP network protocols—security
threats, flaws and defense methods. In Computing for Sustainable Global Development
(INDIACom), 2016 3rd International Conference on (pp. 2693-2699). IEEE.
Trossen, D., Reed, M. J., Riihijärvi, J., Georgiades, M., Fotiou, N., & Xylomenos, G. (2015,
June). Ip over icn-the better ip?. In Networks and Communications (EuCNC), 2015
European Conference on (pp. 413-417). IEEE.
Yamamoto, T., Hara, T., Ishikawa, T., Oyama, H., Takada, H., & Azumi, T. (2017, August).
TINET+ TECS: Component-Based TCP/IP Protocol Stack for Embedded Systems.
In Trustcom/BigDataSE/ICESS, 2017 IEEE (pp. 784-791). IEEE.
Zhao, K., & Zhang, Q. (2018). Network protocol architectures for future deep-space
internetworking. Science China Information Sciences, 61(4), 040303.

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