Feb07 - CSE398: Network Systems Design Instructor: Dr....

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CSE398: Network Systems Design Instructor: Dr. Liang Cheng Department of Computer Science and Engineering Lehigh University February 7, 2005
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/07/05 Outline ± Recap ± Computer hardware architecture ± Fetch and store ± Packet processing algorithms (Chapter 5) ± Summary and homework
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/07/05 NIC Functionality ± Onboard address recognition and filtering ± Onboard packet buffering ± Direct memory access (DMA) ± Data chaining and operation chaining
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/07/05 Onboard Address Recognition And Filtering ± NIC given set of addresses to accept ± Station’s unicast address ± Network broadcast address ± Zero or more multicast addresses (<=32 or 64) ± CPU must be prepared to handle a false acceptance ± When packet arrives, NIC checks destination address ± Accept packet if address on list ± Discard others
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Instructor: Dr. Liang Cheng CSE398: Network Systems Design 02/07/05 Onboard Packet Buffering ± NIC given high-speed local memory ± Incoming packet placed in NIC’s memory ± Allows computer’s memory/bus to operate slower than network ± Handles small packet bursts
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Instructor: Dr. Liang Cheng
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This note was uploaded on 08/06/2008 for the course CSE 398 taught by Professor Cheng during the Spring '05 term at Lehigh University .

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Feb07 - CSE398: Network Systems Design Instructor: Dr....

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