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CECS 474 Network Interoperability: Ethernet Performance with Hubs & Switches - Prof. Tracy, Assignments of Computer Science

California State University (CSU) - Long BeachComputer Science
Prof. Tracy Maples

An assignment for a university course, cecs 474, focused on computer network interoperability. Students are required to work in groups to compare the performance of ethernet connections using both hubs and switches in various scenarios. The assignment includes prelab and lab report requirements, with specific instructions on experiment design, data collection, and reporting. The purpose of the assignment is to gain hands-on experience in understanding the differences in network performance between hubs and switches.

Typology: Assignments

Pre 2010

Uploaded on 08/19/2009

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CECS 474 Computer Network Interoperability
Assignment 4
Ethernet Performance – Simple Hub/Simple Switch
Prelab Due Wednesday, February 18, 2009 (by the end of lab)
Final Report Due Monday, March 9, 2009
EXPERIMENT
Workgroups: You will be working in five groups of 5-6 members. Each group will be
assigned to a set of computers: NET1-3, NET4-6, NET7-9, or NET10-12.
Note: In your final report, your group will need to identify the work done
by each group member. If you do not do the work, you will not get the
credit.
Equipment: 10/100 Ethernet NIC cards, 10/100 Mbps Ethernet Hubs, 10/100 Mbps
Ethernet Switch, 1000 Ethernet Switch, twisted-pair cable
Scenarios: You should experiment with each of the following scenarios:
Scenario A: Three workstations attached to a 10 Mbps Ethernet Hub
Scenario B: Three workstations attached to a 10 Mbps Ethernet Switch
Scenario C: Three workstations attached to a 100 Mbps Ethernet Hub
Scenario D: Three workstations attached to a 100 Mbps Ethernet Switch
Scenario E: Three workstations attached to a 1000 Mbps Ethernet Switch
Purposes: The purpose of this lab is to compare the performance of simple Ethernet
10/100/1000 connections using both hubs and switches.
Dates: Prelab due Wednesday, February 18, 2009 (by the end of lab)
February 18 & 23: NET1-NET6 work on Scenario A & C
NET7-NET15 work on Scenario B & D & E
February 25 & March 2: NET1-NET6 work on Scenario B & D & E
NET7-NET15 work on Scenario A & C
Wednesday, March 4: Final experiments
Final Report due Monday, March 9, 2009
Dr. Tracy Bradley Maples (Spring 2009) 1
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CECS 474 Computer Network Interoperability

Assignment 4

Ethernet Performance – Simple Hub/Simple Switch

Prelab Due Wednesday, February 18, 2009 (by the end of lab)

Final Report Due Monday, March 9, 2009

EXPERIMENT

Workgroups: You will be working in five groups of 5-6 members. Each group will be assigned to a set of computers: NET1-3, NET4-6, NET7-9, or NET10-12. Note: In your final report, your group will need to identify the work done by each group member. If you do not do the work, you will not get the credit. Equipment: 10/100 Ethernet NIC cards, 10/100 Mbps Ethernet Hubs, 10/100 Mbps Ethernet Switch, 1000 Ethernet Switch, twisted-pair cable Scenarios: You should experiment with each of the following scenarios: Scenario A: Three workstations attached to a 10 Mbps Ethernet Hub Scenario B: Three workstations attached to a 10 Mbps Ethernet Switch Scenario C: Three workstations attached to a 100 Mbps Ethernet Hub Scenario D: Three workstations attached to a 100 Mbps Ethernet Switch Scenario E: Three workstations attached to a 1000 Mbps Ethernet Switch Purposes: The purpose of this lab is to compare the performance of simple Ethernet 10/100/1000 connections using both hubs and switches. Dates: Prelab due Wednesday, February 18, 2009 (by the end of lab) February 18 & 23: NET1-NET6 work on Scenario A & C NET7-NET15 work on Scenario B & D & E February 25 & March 2: NET1-NET6 work on Scenario B & D & E NET7-NET15 work on Scenario A & C Wednesday, March 4: Final experiments Final Report due Monday, March 9, 2009 Dr. Tracy Bradley Maples (Spring 2009) (^1)

PRELAB (50 points)

Turn in one prelab for your entire team. Be sure to list the members of your team, and the computers you are using for this project. In the prelab, your team should design your lab experiments. Answer the following questions:

  1. Briefly describe the major functions and characteristics of an Ethernet hub.
  2. Briefly describe the major functions and characteristics of a Layer-2 Ethernet switch.
  3. What is the basic design of the experiment? How will the computers be attached to the hubs and switches? Use a diagram to explain your topology.
  4. How will you test the performance of your networks? How will you generate data? How will you collect statistics? How will you share data with the other team members.
  5. What results do you expect to see? How do you expect Scenarios A & C compare with Scenarios B and D? Etc.

LAB REPORT (200 points)

 Turn in one final report for your entire team. Be sure to list the members of your team, the roles each team member played, and the computers you are using for this project.  You must describe/explain the experiment you performed, summarize the results and draw conclusions based on your results.  Your lab report must include the following components:

I. Describe the Experiment

 What was the purpose of the experiment? II. What is the basic design of the experiment? III. What did you do during the experiment? IV. What equipment was required? V. Were any problems encountered?

VI. Summarize and Discuss Your Results

You must organize the data you collect in a logical, thoughtful fashion. I strongly recommend that you use tables, graphs or figures to present your data and then write text explaining your illustrations. VII. Conclusions It is not enough to simply present your data, you must explain what you think it means. You must draw conclusions from your experiments. Remember, the best reports tell a story: DESCRIBE THE EXPERIMENT -> SUMMARY OF RESULTS -> CONCLUSIONS Dr. Tracy Bradley Maples (Spring 2009) (^2)