Due Date:
Bachelor of Computer and Information Sciences School of Engineering, Computer and Mathematical Sciences
COMP714 Advanced Network Technologies Semester 2 2020
Weight: 40%
ASSIGNMENT Individual
Part 1: 29 September 2020 (report and demo) Part 2: 20 October 2020 (report and demo)
This assignment consists of Part 1 and Part 2. PART 1: Wired Network Performance
Consider a wired network model (OMNET++) using a Gigabit Ethernet (GbE) backbone switch linked to several Ethernet sub-switches (also called subnet) so that large number of wired nodes/clients can be accommodated to the network. For example, one subnet can support up to 20 nodes (for optimum performance). So, if you are simulating a network with 100 nodes in total, your network model should have 5 subnets linked to a GbE backbone.
Simulation parameters:
• Number of nodes/clients: 100
• Simulation time: 3600 Sec (longer required for Video streaming)
• Traffic type: Video streaming
• Packet type: UDP packet
• Performance metrics:
(a) Video Throughput;
(b) Video End-to-end delays; (c) Video packet losses.
[Hint: Video streaming uses UDP transport layer protocol, and hence UDPVideoStreamCli, UDPVideoStreamSvr can be used for video client and video Server, respectively.]
Investigation: Effect of increasing the number of video clients on system performance You may use the following table to record your simulation results.
Nodes
Throughput (bps)
End-to-end Delay (sec)
# of Packet loss
10
20
30
40
50
60
70
80
90
100
1. Analyse the results (including model validation) and write your report (4-6 pages) by summarising your research findings. Hint: You can draw several graphs including number of clients versus video throughput, end-to-end delays, and packet losses.
2. Submit your report through AUT Blackboard and then give a demo to your TA.
22
PART 2: Hybrid Network (combined wired and wireless) Performance Objective: In completing Part 2 of the assignment, you will explore the effect of increasing
wireless/mobile video clients on the performance of a hybrid network.
SUGGESTED STEPS:
1. Extend the wired network that you have developed in Part 1 to include wireless (or mobile) clients. Establish a connection between wireless access points and subnets.
2. Configure and run the model.
3. Measure the following performance metrics (same as Part 1).
Video Throughput; End-to-end delays; and packet losses.
4. Validate your simulation results: Ensure that your simulation results are valid (i.e.
correct). You can use various methods/techniques to validate your results (read some
literature on simulation model validation techniques).
5. Comparative Study: Compare network performance with and without mobile wireless
clients. Using tables and/or graphs (MS Excel or Matlab), summarise your simulation results to make a meaningful conclusion. This is your opportunity to explore things to demonstrate your in-depth knowledge and understanding of the assignment that you have done.
6. Submit your report (Part 2) through AUT Blackboard and give a demo to your TA.
Hints: Example of analysis and synthesis of research findings: You may use the following table to record your simulation results. Also draw various graphs if appropriate.
Nodes/clients
Throughput (bps)
End-to-end Delay (s)
# of Packet loss
wired
wireless
wired
hybrid
wired
hybrid
wired
hybrid
5
5
10
10
15
15
20
20
25
25
30
30
35
35
40
40
45
45
50
50
33
General Report Format
Cover page: Assignment title, student’s name, and ID
Introduction: What, why and how? – Begin your report with a clear objective (What!) of your assignment. Explain why this assignment/research is needed and how you have completed it. Outline the structure of the rest of the report.
Modelling the network: Describe the model that you have developed using appropriate screenshots for models and subnet (hint: avoid unnecessary screenshots).
Results and Analysis: Summarise your simulation results using tables and/or graphs (Excel or Matlab graphs) and provide a comparative analysis.
Model Validation: Discuss how you have validated your simulation results. Lesson learned: Write a paragraph or two, reflecting on your own learning. Conclusion: Summarise the main findings and future research directions. References: List at least 5 references that you have used in the report. Report Length: (Part 1: 4-6 pages; Part 2: 10-14 pages)
Spacing: 1.5
Font: 11 Times New Roman.
44
Optional Materials
Appendices A to F
55
Appendix A
Appendix B
66
Appendix C
Sample .ini file for Wired Network
3600s
77
Appendix D
3600s
88
Appendix E
99
Appendix F
3600s
10
10