spaper02_slides - Supporting Multimedia Communication Over...

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Supporting Multimedia (ommunication Over $ ,iga%it *thernet Network GrPttLU %y : B. Daines , J.C.L Liu and K. Sivalingam 3rLsLUtLT %y : Vasanth Kumar Chandrakumar (9478-9831) Sabesan Venkataraman (3891-2175)
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What and Why GigaBit Ethernet Network? For transmitting Ethernet frames at a rate of a gigabit per second (1,000,000,000 bits per second) But Why ? To support applications like : Streaming multimedia Virtual Reality High-Performance Distributed Computing Distance Learning
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Motivation : Ɣ Need for a faster Connectivity Ɣ Increasing Multimedia content of Web Traffic ż Increased use of applications - Streaming multimedia, virtual reality, high performance Ɣ Nature of traffic distribution
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Solution: 3 new Hardware/Firmware components ±² Gigabit Network Interface Card for hosts. ³² Full Duplex Repeater for LAN. ż² Gigabit Routing Switches for MAN.
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Hardware/Firmware Design Considerations 1) 802.3 frame compatibility. IEEE 802.3z Standard: PHY Layer - 1000 Mbps capable fiber MAC Layer - Reduced Inter-Frame Gap to 0.16 micro secs
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GigaBit Network Interface Card 2) Design MAC ASIC to operate the GNIC at line speed. ż Descriptor based direct memory access (DMA) to reduce CPU utilization. ż Provision of large packet buffers to avoid packet dropping.
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Motivation: Ɣ HUB ż CSMA/CD ż low performance - time to sense the carrier and detect collisions. Ɣ
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spaper02_slides - Supporting Multimedia Communication Over...

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