As a business’s operations start to grow and become complicated it is wise to have a functional IT infrastructure to manage those operations in a much smarter way. Hence upgrading an existing network in a company could make it much easier for that company to manage their operations. GSM Associates is a financial back office which is situated at Sri Lanka. It is the back office of ASN Partnerships which is located at UK. The main purpose of GSM is meeting all the needs of all growing small and medium sized entity, sole trades or partnerships. As a back office, the accountants who are working at GSM does settlements, clearances, record maintenance of clients and also provide IT services to clients who are working overseas. Purpose of this group project is to create a new network design, that suites the business.

1. Internet Protocols and Services
Module Code: EM6250
Level: 6
UPGRADING THE NETWORK OF GSM
ASSOCIATES
Members:
W. A. Neranjan Viduranga
Kalani Warnakulasooriya
Thamindi Kariyawasam
Dilan Sarujan Murasolimaran

2. 2
Abstract
As a business’s operations start to grow and become complicated it is wise to have a functional
IT infrastructure to manage those operations in a much smarter way. Hence upgrading an
existing network in a company could make it much easier for that company to manage their
operations.

3. 3
Contents
Introduction ................................................................................................................................5
The existing network of GSM .....................................................................................................6
Requirements for the network upgrade ........................................................................................7
Hardware requirements ...........................................................................................................7
Technology requirements ........................................................................................................7
The Proposed network design......................................................................................................8
Cisco packet tracer design .......................................................................................................9
IP allocation table....................................................................................................................9
Implementation.........................................................................................................................11
Test cases..................................................................................................................................15
Conclusion................................................................................................................................22
References ................................................................................................................................23
Appendices ...............................................................................................................................24

4. 4
List of Figures/Tables
List of Figures
Figure 1 The existing network of GSM Associates......................................................................6
Figure 2 The proposed network design........................................................................................8
Figure 3 Cisco Packet Tracer Design...........................................................................................9
Figure 4 VLAN config in router................................................................................................11
Figure 5 VLAN config in router................................................................................................11
Figure 6 Switch port trunk...........................................................Error! Bookmark not defined.
Figure 7Switch port access..........................................................Error! Bookmark not defined.
Figure 8 VLAN 100 IP config ...................................................................................................13
Figure 9 VLAN 200 IP config ...................................................................................................13
Figure 10 VLAN 400 IP config .................................................................................................14
Figure 11 VLAN 300 IP config .................................................................................................14
List of Tables
Table 1 Address allocation table..................................................................................................9
Table 2 Pinging from VLAN 100 to other VLANs ....................................................................15
Table 3 Pinging from VLAN 200 to other VLANs ....................................................................16
Table 4 Pinging from VLAN 300 to other VLANs ....................................................................17
Table 5 Pinging from VLAN 400 to other VLANs ....................................................................18
Table 6 Ping inside VLAN 100 .................................................................................................19
Table 7 Ping inside VLAN 200 .................................................................................................20
Table 8 Ping inside VLAN 300 .................................................................................................21
Glossary of Terms
VLAN- Virtual Local Area Network
PCs- Personal computers

5. 5
Introduction
GSM Associates is a financial back office which is situated at Sri Lanka. It is the back office of
ASN Partnerships which is located at UK. The main purpose of GSM is meeting all the needs of
all growing small and medium sized entity, sole trades or partnerships. As a back office, the
accountants who are working at GSM does settlements, clearances, record maintenance of clients
and also provide IT services to clients who are working overseas. GSM Associates is currently
using Any Desk application to use and share resources from ASN Partnerships.

6. 6
The existing network of GSM
The above diagram shows the existing network of GSM Associates. There are only 15 PCs, one
IP Phone and two printers connected to the Switch. The organization has not implemented any
VLANs in their existing network. The organization has been only using Any Desk to share and
communicate with each other.
Figure 1 - The existing network of GSM Associates

7. 7
Requirements for the network upgrade
Hardware requirements
 Two extra PCs
In order to increase the efficiency, the company management suggested to add two extra PCs to
the Workstation department.
Technology requirements
VLAN technology
"A VLAN is a network concept. VLANs allow you to create broadcast domains at the OSI
Model layer 2 level, the data link layer. VLANs provide one method of packet identification, and
they allow multiple workloads to coexist on the same physical equipment."(Ibm.com, 2021)
 VLAN configurations
Implementing VLAN configurations to the company network were suggested in order to upgrade
performance of the existing network. By implementing VLANs to the initial network the
company management target to achieve following,
1. Group employees who use the same data recourses, such as voice-over-IP (VoIP) phones,
printers.
2. Restrict access to highly sensitive data by separating from the rest of the network. (Ex: -
separating financial and HR employees in order to assure data security.)
3. To increase network security by, essentially, putting all critical traffic and the employees
who have access to it on a separate network

8. 8
The Proposed network design
The newly proposed network design divides existing network in to 4 Virtual Local Area
Networks as Workstation Department, Company Finance Department, HR Department and
Admin. Due to the frequent communication between ASN partnerships and GSM associates, an
IP phone, which was used by the whole network before, is added to the workstation Dept. in
order to directly connect with their clients. To create hard copies of important documents, one of
the two printers used in the existing network is assign to this workstation VLAN. Also, two extra
PCs are added to the workstation Dept. according to the client requirements.
Company finance Dept. consists of two PCs and one printer. They look after the financial state of
the GSM associates. HR Dept. has 2 PCs and the Admin VLAN consists of one PC, which is
used by the network administrator in order to manage the network of GSM associates. Total
numbers of end devices are mentioned in below.
1. Workstation Department – 12 PCs, IP Phone and a printer
2. Company finance Department – 2 PCs and a printer
3. HR Department – 2 PCs
4. Admin – 1 PC
Figure 2 - The proposed network design

9. 9
Cisco packet tracer design
IP allocation table
Department No: of
devices
Starting IP Ending IP Subnet mask Default
gateway
VLAN
ID
Workstations 14 192.168.10.0 192.168.10.31 255.255.255.224 192.168.10.1 100
Company
finance
3 192.168.10.32 192.168.10.39 255.255.255.248 192.168.10.33 200
HR 2 192.168.10.40 192.168.10.47 255.255.255.248 192.168.10.41 300
Admin 1 192.168.10.48 192.168.10.51 255.255.255.252 192.168.10.49 400
Table 1 Address allocation table
Figure 3 - Cisco Packet Tracer Design

10. 10
IP address range 192.168.0.0 – 192.168.255.255 will be used in configurations hence "By
universally recognizing these ranges as private and non-routable in the Internet, multiple
organizations can use these ranges internally without causing a conflict with public Internet
addresses. If an organization attempts to route these networks externally, the traffic is filtered
and dropped by the Internet Service Provider." (IP Addressing Guide Revision: H1CY11, n.d.)
This IP address range is in class C and in private IP address range which is ideal for internal use
for a small company network.

11. 11
Implementation
01. VLAN configuration in the router
Figure 4 - VLAN configuration in router
Figure 5 - VLAN configuration in router

12. 12
02. Switch port trunk
Figure 6 - Switch port trunk
03. Switch port access
Figure 7 - Switch port access

13. 13
05. IP configuration in PCs
Figure 8 - VLAN 100 IP configurations
Figure 9 - VLAN 200 IP configuration

14. 14
Figure 11 - VLAN 300 IP configuration
Figure 10 - VLAN 400 IP configuration

15. 15
Test cases
Test case 1
Table 2 Pinging from VLAN 100 to other VLANs
Test type: – Pinging from VLAN 100 to other
VLANs
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity using
“Ping” command.
Expected 0% packet
loss
0% packet loss Pass

16. 16
Test case 2
Table 3 Pinging from VLAN 200 to other VLANs
Test type: – Pinging form VLAN 200 to other
VLANs
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity
using “Ping” command.
Expected 0% packet
loss
0% packet loss Pass

17. 17
Test case 3
Table 4 Pinging from VLAN 300 to other VLANs
Test type: – Pinging from VLAN 300 to other
VLANs
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity using
“Ping” command.
Expected 0% packet
loss
0% packet loss Pass

18. 18
Test Case 04
Table 5 Pinging from VLAN 400 to other VLANs
Test type: – Pinging from VLAN 400 to other
VLANs
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity using
“Ping” command.
Expected 0% packet
loss
0% packet loss
(192.168.10.8
shows 25% of
packet loss)
Pass

19. 19
Test Case 05
Table 6 Ping inside VLAN 100
Test type: – Ping inside VLAN 100 (from pc2 to
pc5)
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity using
“Ping” command.
Expected 0% packet
loss
0% packet loss Pass

20. 20
Test Case 06
Table 7Ping inside VLAN 200
Test type: – Ping inside VLAN 200 (pc12 to
printer1)
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity using
“Ping” command.
Expected 0% packet
loss
0% packet loss Pass

21. 21
Test Case 07
Table 8 Ping inside VLAN 300
Test type: –
Ping inside VLAN 300 (pc14 to pc15)
Date:12/03/2021
Activity Expected output Original output Pass/Fail
Check connectivity using
“Ping” command.
Expected 0% packet
loss
0% packet loss Pass

22. 22
Conclusion
By completing this group work all the members have gained and improved their knowledge on
IP addressing and on designing a network and doing configurations.

23. 23
References
Ibm.com. (2021). IBM Cloud Docs. [online] Available at:
https://cloud.ibm.com/docs/vlans?topic=vlans-about-vlans [Accessed 11 Mar. 2021].
IP Addressing Guide Revision: H1CY11. (n.d.). [online] . Available at:
https://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise/design-zone-smart-business-
architecture/sba_ipAddr_dg.pdf.

24. 24
Appendices
Name of the Member Contribution
Kalani Warnakulasooriya Drawing the designs of the network
Thamindi Kariyawasam Written parts of the report.
W.A. Neranjan Viduranga Configuring the Cisco Packet Tracer
Dilan Sarujan Murasolimaran Finding the client and written parts of the
report