TELE2000~Lan%20Performance~09.23.05

TELE2000~Lan%20Performance~09.23.05 - University of...

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University of Pittsburgh: School of Information Sciences Graduate Program in Telecommunications and Networking TELCOM 2000 Information to Telecommunications LAN Performance Measurements Lab Manual version 1.0 Last edited June 10 2005 Student’s name: ____________________________________ Group Members: ____________________________________ ____________________________________ ____________________________________ ____________________________________ Date of the Experiment: ________________________ IP Network Layer Protocol Lab 1
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Graduate Program in Telecommunications and Networking Part I: Objective The goal of this laboratory is for students to gain first hand experience measuring and observing the performance characteristics of the two most popular commercial LAN technologies, ethernet and token- ring . The hands-on experience gained in the lab is intended to supplement and reinforce the student's understanding of the operational and performance aspects of the MAC-layer protocols. To benefit from this experience it is essential that students have a reasonable understanding of the of the IEEE 802.3 (ethernet) and 802.5 (token-ring) specifications. Familiarity with these topics as covered in class and through assigned readings is sufficient. Task Measuring the network utilization or throughput, and the time it takes to perform a simple FTP file transfer as the loads are varied. Students will be given traffic generators to generate traffic to the server. A range of input loads will be provided. Two parameters that students can adjust to supply the load are the frame rate and the frame length. These two parameters are also provided. Students should follow the lab instructions and complete the tables for both parts: ethernet and token-ring. Remarks Simple observations should reveal some basic relationships among load, throughput, frame length and delay. Using their understanding of each network's MAC-layer protocol, and their understanding of the particular environment they should be able to assess the reasons for the behavior they have observed. Students should understand that it is difficult to compare the performance of ethernet and token-ring in an absolute sense. But this lab should provide some opportunity to observe relative effects. Students are expected to give some thought as to why the technologies behave differently and when it may be more appropriate to use one versus the other. When considering what they have observed in this lab students should consider the following questions: (1) How performance issues might affect LAN design. (2) What kinds of things might be done to improve LAN performance in an ethernet or token-ring environment? (3)
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This note was uploaded on 01/30/2011 for the course TELECOM 102 taught by Professor Davidtipper during the Spring '10 term at Rochester.

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TELE2000~Lan%20Performance~09.23.05 - University of...

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