TCP/IP Networking

This document provides information about TCP/IP networking and IP address allocation plans for a software company with multiple branches and departments. It discusses the IP addressing plan for the headquarter, Branch A, and Branch B, along with the allocation of IP addresses for network devices. It also covers the requirements for the company's local area network and the logical design for the network. The document concludes with the importance of IP network address planning and security measures.

[Document title]
TCP/IP NETWORKING
DECEMBER 23, 2018
TEMAOS

TASK 1
Introduction
Business.com is a software company that is located in the region of Western Sydney. It has two
braches which offer services all over the region. Its head Quarter has a network that comprises of
100 devices which include the printers, computers among others. Branch A on the other hand has
30 network devices while Branch B has 20 network devices. The company is planning to re-
address it network as a new IP addressing space has been assigned to it. Below is an IP
addressing plan for how the IP addresses will be allocated.
Head Quarter
IP address
The IP address that will be used in configuration will be 203.2.60.0 which offers 254 usable IP
addresses (Fall & Stevens, 2011).
IP address allocation plan
 network address: 203.2.60.0
 subnet mask: 255.255.255.0
 broadcast address: 203.2.60.255
 default gateway address: 203.2.60.1
 host address range: 203.2.60.1 - 203.2.60.254
IP address allocation plan for network devices
All the devices connected to the headquarter network will have an IP address ranging from
203.2.60.2 to 203.2.60.254. Figure 1 shows a logical design of how the IP addressing will look
like.
Branch A
IP address requirement
The IP address that will be used in configuration of branch A will be 203.2.61.0 which offers 254
usable IP addresses.

IP address allocation plan
 network address: 203.2.61.0
 subnet mask: 255.255.255.0
 broadcast address: 203.2.61.255
 default gateway address: 203.2.61.1
 host address range: 203.2.61.1 - 203.2.61.254
IP address allocation plan for network devices
All the devices connected to Branch A network will have an IP address ranging from 203.2.61.2
to 203.2.61.254.
Branch B
IP address requirement for branch B
The IP address that will be used in configuration of branch B will be 203.2.62.0 which offers 254
usable IP addresses.
IP address allocation plan
 network address: 203.2.62.0
 subnet mask: 255.255.255.0
 broadcast address: 203.2.62.255
 default gateway address: 203.2.62.1
 host address range: 203.2.62.1 - 203.2.62.254
IP address allocation plan for network devices
All the devices connected to Branch B network will have an IP address ranging from 203.2.62.2
to 203.2.62.254.

Figure 1
TASK 2
In this phase, we are going to redevelop the network developed in task 1 using the class B
network 163.60.0.0/16 as opposed to the class C network applied in task 1.
Here, the head quarter will comprise of 5 departments which are the Software Development (60
employees), Solution Design (42 employees), Customer Support (30 employees), Sales (18
employees) and Finance (6 employees).
The head quarter will have a total number of 156 employees, branch A will have 200 employees
while branch B will have 100 employees.
Requirements for the company local area network
The aim of redeveloping the network in task 1 is so as to achieve communication that is
improved, to add devices such as the VoIP among others as well as protecting the information
stored in the company.

Head Quarter
Here, the network to be used is 163.60.0.0. Since the head quarter has 5 departments, the
network will be divided into 5 vlans: (Fàbrega, Massaguer, Jové & Mérida, 2012)
 Software VLAN0 163.60.0.1
 Solution VLAN1 163.60.1.1
 Customer VLAN2 163.60.2.1
 Sales VLAN3 163.60.3.1
 Finance VLAN4 163.60.4.1
There are a number of goals that will be achieved in the following network which include the
following:
 To achieve scalability, the head quarter network will have to be configured using a
network that will accommodate a large number of IP addresses so that it can allow for
more number of employees who will be increased with time. Also, cross-over cables can
be used to connect switches within the same VLAN.
 To enable access of the resources of the company form the company and home, vpn
configuration will be done on the switches.
 To increase the performance of the network, Ethernet cables will be used while for high
performance on the outdoor access of the network, shielded cables work best.
 Due to the high risk of information being hacked or network intrusions, the switches at
the head quarter will be configured using the access deny protocol.
 Flexibility of the network is enabled through configuration using DHCP as well as
connecting switches in a department using cross-over cables (McCloghrie, James, James
& Finn, 2011).
Software development department
The department has 60 employees. The vlan here is 163.60.0.1/16 (Odom, 2013).
The IP addresses will be allocated in the following way:
 network address: 163.60.0.0
 subnet mask: 255.255.0.0
 broadcast address: 163.60.255.255

 default gateway address: 163.60.0.1
 host address range: 163.60.0.1 - 163.61.0.254
Solution design department
The department has 42 employees. The vlan here is 163.60.1.1/16.
The IP addresses will be allocated in the following way:
 network address: 163.60.1.0
 subnet mask: 255.255.0.0
 broadcast address: 163.60.255.255
 default gateway address: 163.60.1.1
 host address range: 163.60.1.1 - 163.61.1.254
Customer support department
The department has 30 employees. The vlan here is 163.60.2.1/16.
The IP addresses will be allocated in the following way:
 network address: 163.60.2.0
 subnet mask: 255.255.0.0
 broadcast address: 163.60.255.255
 default gateway address: 163.60.2.1
 host address range: 163.60.2.1 - 163.61.2.254
Sales department
The department has 18 employees. The vlan here is 163.60.3.1/16.
The IP addresses will be allocated in the following way:
 network address: 163.60.3.0
 subnet mask: 255.255.0.0
 broadcast address: 163.60.255.255
 default gateway address: 163.60.3.1
 host address range: 163.60.3.1 - 163.61.3.254

Finance department
The department has 6 employees. The vlan here is 163.60.4.1/16.
The IP addresses will be allocated in the following way:
 network address: 163.60.4.0
 subnet mask: 255.255.0.0
 broadcast address: 163.60.255.255
 default gateway address: 163.60.4.1
 host address range: 163.60.4.1 - 163.61.4.254
Logical design for the network
The figure below represents the logical network diagram for the redeveloped Local Area
Network of the Company (Wayne, 2012).
Figure 2
Branch A
IP address requirement
The IP address to be used will be 163.61.0.0.

IP address allocation plan
 network address: 163.61.0.0
 subnet mask: 255.255.0.0
 broadcast address: 163.61.255.255
 default gateway address: 163.61.0.1
 host address range: 163.61.0.1 - 163.61.255.254
IP address allocation plan for network devices
All the devices connected to the network will have an IP address ranging from 163.61.0.1 to
163.61.255.254.
Branch B
IP address requirement for branch B
The IP address that to be used will be 163.62.0.0.
IP address allocation plan
 network address: 163.62.0.0
 subnet mask: 255.255.0.0
 broadcast address: 163.62.255.255
 default gateway address: 163.62.0.1
 host address range: 163.62.0.1 - 163.62.255.254
IP address allocation plan for network devices
All the devices connected to the network will have an IP address ranging from 163.62.0.1 -
163.62.255.254 (Kozierok, 2015).
Conclusion
IP network address planning is essential as it makes works easier for individuals to understand
how it will function. Security measures are taken care of to ensure security of the organization’s
information and communication runs smoothly. Also, management becomes easy as control is
carried out in a single location.

References
Fàbrega, L., Massaguer, J., Jové, T., & Mérida, D. (2012). A virtual network laboratory for
learning IP networking. ACM SIGCSE Bulletin, 34(3), 161-164.
Fall, K. R., & Stevens, W. R. (2011). TCP/IP illustrated, volume 1: The protocols.
addison-Wesley.
Kozierok, C. M. (2015). The TCP/IP guide: a comprehensive, illustrated Internet protocols
reference. No Starch Press.
McCloghrie, K., James, B. R., James, C., & Finn, N. W. (2011). U.S. Patent No. 6,304,901.
Washington, DC: U.S. Patent and Trademark Office.
Odom, W. (2013). Cisco CCNA Routing and Switching ICND 200-101: Official Cert Guide.
Pearson Education.
Wayne, L. (2012). LAN Switching and Wireless, CCNA Exploration Companion Guide. Pearson
Education India.