Jan19 - CSE398: Network Systems Design Instructor: Dr....

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CSE398: Network Systems Design Instructor: Dr. Liang Cheng Department of Computer Science and Engineering P.C. Rossin College of Engineering & Applied Science Lehigh University January 19, 2005
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 01/19/05 Outline ± Recap/discussion ± Encapsulation, delay ± Encoding ± Framing ± Error detection ± Ethernet (802.3) ± Summary and homework
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 01/19/05 Outline ± Recap/discussion ± Encoding ± Framing ± Error detection ± Ethernet (802.3) ± Summary and homework
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 01/19/05 Encoding ± Encode binary data onto signals ± Non-return to zero (NRZ): 0 as low signal and 1 as high signal ± Non-return to zero inverted (NRZI): a transition from current signal encodes a 1; staying at current signal encodes a 0 ± Manchester: exclusive-OR of the NRZ and the clock Bits NRZ Clock Manchester NRZI 0010111101000010
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 01/19/05 Outline ± Recap/discussion ± Encoding ± Framing ± Error detection ± Ethernet (802.3) ± Summary and homework
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 01/19/05 Framing ± Break sequence of bits into a frame ± Typically implemented by network adaptor ± Byte-oriented approach ± Sentinel: delineate frame with special pattern, e.g., 01111110;
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Jan19 - CSE398: Network Systems Design Instructor: Dr....

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