XYZ Network Services

Introduction 3 Network Design 3 Network Topology 3 DHCP Server Configuration 4 DNS Server IP Details 4 196.161.1 DHCP Details 5 Network Connectivity 6 IP Addressing 9 IP Table 9 Network Hardware 11 Conclusion 11 References 12 Introduction This report tries to show how the network of company XYZ can look like when it uses four networks to provide LAN network services to three branches in Sydney, Melbourne and Adelaide (Mijovic, Shehu & Buratti, 2016). 196.161.1 Wi-Fi Router (Internet

Running head: DATA COMMUNICATIONS
Data Communications
Name of the Student
Name of the University
Author Note

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Executive Summary
The report attempts to show how the network of the company XYZ looks like when it uses
four subnets for providing LAN network services to the different branches of Sydney,
Melbourne and Adelaide. The fourth subnet, subnet D is to help connect Sydney with
Melbourne and Sydney with Adelaide respectively. In the LAN segments wireless access
points are used for connecting the supported devices like smartphones. Then the report ends
with concluding notes.

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Table of Contents
Introduction................................................................................................................................3
Network Design.........................................................................................................................3
Network Topology.................................................................................................................3
DHCP Server Configuration..................................................................................................4
DNS Server IP Details.......................................................................................................4
DHCP Details.....................................................................................................................5
Network Connectivity............................................................................................................6
IP Addressing.............................................................................................................................9
IP Table..................................................................................................................................9
Network Hardware...................................................................................................................11
Conclusion................................................................................................................................11
References................................................................................................................................12

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Introduction
This report tries to show how the network of company XYZ can look like when it
uses four networks to provide LAN network services to three branches in Sydney, Melbourne
and Adelaide (Mijovic, Shehu & Buratti, 2016). The fourth subnet, subnet D is used for
connecting Sydney with Melbourne and Sydney with Adelaide respectively. The LAN
networks make use of wireless access points for connecting the supported devices like
smartphones. Then the report ends with conclusions.
Network Design
Network Topology
Figure 1: Topology diagram of the network
The above figure presents the network topology diagram of the company XYZ. Here,
it obtains Internet access from the Internet Service Provider (ISP) through the Sydney router

4DATA COMMUNICATIONS
and provide the network to the routers of Melbourne and Adelaide (Omran & Anan, 2018).
Then these routers create their respective LAN networks with the help of layer 3 and layer 2
switches (Bassey, Ogbulezie & Effiom, 2016). The layer 2 switches directly connect the host
devices and wireless access points which provides wireless connections to the smartphones
being used within the respective branch. The host devices and network equipment are
connected in physical star topology. This ensures only a specific part of the network is
affected when a cable or link has gone down.
DHCP Server Configuration
DNS Server IP Details

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DHCP Details
The above screenshots show the DHCP configuration that has been configured in the DNS
server. The Windows and the Linux servers contain similar configurations for assigning IP
addresses to the hosts of the Sydney and the Adelaide network.

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Network Connectivity
This screenshot shows the IP configuration of PC2.

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PC2 has IP address 196.16.112.3 and is successfully able to ping an IP address 196.16.112.4
which is being used from within the same network.

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Next PC2 pings the IP address of PC0 which happens to be in a different network (Sydney).
The ping is observed to be successful.

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Thereafter the PC pings a server over the Internet that has the IP address 200.11.20.2. The
ping is again found to be successful.
IP Addressing
IP Table
Name of
Subnets
IPs
Requi
red
Alloc
ated
Size
Network
CIDR
Mask
Deci
mal
Mask
Assignable
Range
Broad
cast
Subnet A
(Sydney)
63 126 196.16.11
1.0
/25 255.2
55.25
196.16.111.1 -
196.16.111.126
196.16.
111.12

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5.128 7
Subnet B
(Melbourne
)
53 62
196.16.11
2.128
/26
255.2
55.25
5.192
196.16.112.129 -
196.16.112.190
196.16.
112.19
1
Subnet C
(Adelaide)
43 62
196.16.11
3.192
/26
255.2
55.25
5.192
196.16.113.193 -
196.16.113.254
196.16.
113.25
5
Subnet D
(Interconne
ct)
4 6
196.16.10
1.0
/29
255.2
55.25
5.248
196.16.101.1 -
196.16.101.6
196.16.
101.7
The major network chosen for building the network is 196.16.0.0 /23. From this the
four subnets are formed with networks 196.16.101.0, 196.16.111.0, 196.16.112.0,
196.16.113.0 (Huitao, Ruopeng & Xiaofei, 2019). These networks are used as interconnect
between the different branches, as subnet of Sydney, for Melbourne and Adelaide
respectively. Thus the network requires to allocate an address space of size 126 for
connecting 63 hosts in Sydney, 62 for connecting 53 hosts in Melbourne, another 63 for
connecting 43 hosts in Adelaide and 4 IP addresses from Subnet D for connecting the routers
of different locations with 2 IPs to connect Sydney with Melbourne and another 2 to connect
Sydney with Adelaide.
Network Hardware
Router: The routers here are used to obtain Internet access over WAN network topology.
The Sydney router obtains the network from the ISP and then distributes the Internet access
to other branches at Melbourne and Adelaide.

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Switch: The layer 3 and layer 2 switches get used to create the LAN networks of the
respective regions. Here the layer 3 switches help form hierarchical networks for ensuring
minimal use of ports and interfaces of the routers thereby saving costs (Namazi & Lin, 2019).
The layer 2 switches directly connect the computers, servers and access points.
Wireless Access Points: The wireless access points provide Wi-Fi connections to supported
mobiles and laptops (VanSickle, Abegaz & Payne, 2019). Similar to other devices existing in
the network, the smartphones acquire the IP configuration automatically through DHCP.
Conclusion
In conclusion, the above report successfully shows how the network of company XYZ
can be setup. It is observed to use four subnets to provide LAN network services to three
branches in Sydney, Melbourne and Adelaide. The fourth subnet, subnet D is used for
connecting Sydney with Melbourne and Sydney with Adelaide respectively by assigning two
IP addresses from the subnet to adjoining routers. The LAN networks make use of wireless
access points for connecting the supported devices like smartphones. All devices obtain their
IP configuration automatically through DHCP.

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References
Bassey, D. E., Ogbulezie, J. C., & Effiom, E. O. (2016). Local Area Network (LAN) Mock-
up and the Prevention of Cybernetics Related Crimes in Nigermills Company using
Firewall Security Device. International Journal of Scientific & Engineering
Research, 7(3), 1124-1130.
Huitao, W., Ruopeng, Y., & Xiaofei, Z. (2019, April). Research on IP Address Allocation of
Tactical Communication Network. In Journal of Physics: Conference Series (Vol.
1187, No. 4, p. 042105). IOP Publishing.
Mijovic, S., Shehu, E., & Buratti, C. (2016, September). Comparing application layer
protocols for the Internet of Things via experimentation. In 2016 IEEE 2nd
International Forum on Research and Technologies for Society and Industry
Leveraging a better tomorrow (RTSI) (pp. 1-5). IEEE.
Namazi, A., & Lin, C. (2019). NRES: Non-blocking Ruggedized Ethernet Switch for
Airborne Applications (No. 412TW-PA-19264). INTELLIGENT AUTOMATION
INC ROCKVILLE MD ROCKVILLE United States.
Omran, K., & Anan, N. (2018). Studying the impact of using E-HRM on the effectiveness of
HRM practices: An exploratory study for the internet service providers (ISP) in
Egypt. International Journal of Academic Research in Business and Social
Sciences, 8(4), 458-492.
VanSickle, R., Abegaz, T., & Payne, B. (2019). Effectiveness of Tools in Identifying Rogue
Access Points on a Wireless Network.