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Sept24 - CSE/ECE404 Computer Networks Instructor Dr Liang...

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CSE/ECE404: Computer Networks Instructor: Dr. Liang Cheng Department of Computer Science and Engineering P.C. Rossin College of Engineering & Applied Science Lehigh University September 24, 2007
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Instructor: Dr. Liang Cheng CSE/ECE404: Computer Networks 09/24/07 Outline Recap Ethernet: IEEE 802.3 Token ring Wireless LAN Summary
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Instructor: Dr. Liang Cheng CSE/ECE404: Computer Networks 09/24/07 Collision Sender transmits for RTT to assure collision detection Max RTT: 51.2 μ s 10 Mbps: 512 bits 14 byte header, 46 byte data, and 4 byte CRC
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Instructor: Dr. Liang Cheng CSE/ECE404: Computer Networks 09/24/07 Outline Recap Token ring Wireless LAN Summary
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Instructor: Dr. Liang Cheng CSE/ECE404: Computer Networks 09/24/07 Token Ring (802.5) Idea 16 Mbps IEEE 802.5 (IBM ring) 100 Mbps Fiber Distributed Data Interface (FDDI) Frame flow Token capture and release Round-robin service A/C bits and 3-bit priority
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Instructor: Dr. Liang Cheng CSE/ECE404: Computer Networks 09/24/07 Token Maintenance Designated monitor station Detecting lost token Generating a token (and agreeing on TTRT)
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