'Ethernet frame format' diaporamas de présentation

Semester 1 CHAPTER 7 Wael Yousif

Semester 1 CHAPTER 7 Wael Yousif. Connecting The Internet Generation. Content. Token-ring. FDDI LAN. Ethernet and IEEE 802.3. Layer 2 devices and effects on data flow. BASIC OF TOKEN-RING. Variants.

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Ethernet, Fast Ethernet, and Gigabit Ethernet

Ethernet, Fast Ethernet, and Gigabit Ethernet. In this presentation, we will take a closer look at Ethernet, Fast Ethernet, and Gigabit Ethernets. Ethernets. Collision Domains Should Be Small. The packets sent by the hosts on the same collision domain may collide with each other.

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Ethernet

Ethernet. Advanced Computer Networks D 12. Ethernet Outline. Ethernet Binary Exponential Backoff Ethernet versus IEEE 802.3 Ethernet Evolution 10BASE5, 1OBASE2, 1BASE5, 10BASE-T Switched Ethernet Switching Hub. Ethernet [DEC, Intel, Xerox].

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Ethernet

Source for this lecture: http://www.ethermanage.com/ethernet/ethernet.html. Ethernet. Read Forouzan Pages 43-49.

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Ethernet

Source for this lecture: http://www.ethermanage.com/ethernet/ethernet.html. Ethernet. Read Forouzan Pages 43-49.

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The Medium Access Control Sublayer

The Medium Access Control Sublayer. Chapter 4. The Channel Allocation Problem. humans at a cocktail party (shared air, acoustical). shared wire (e.g., cabled Ethernet). shared RF (e.g., 802.11 WiFi). Which sender can use the broadcast medium?. Taxonomy. Collision free:

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Reliable Transmission

Reliable Transmission. How to fix corrupted frames. Error correcting codes too expensive Should discard frames (retransmission) Recover from Corrupt Frames should be done in the Link Level. Reliable Transmission. Recovery is accomplished with two mechanisms Acknowledgements (ACK)

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Enhanced CSMA

Enhanced CSMA. Additional improvement Use CSMA access Listen while transmitting Stop immediately if collision sensed Called collision detection Reduces time lost due to collisions Carrier Sense Multiple Access/Collision Detection protocols ( CSMA/CD ). Shared channel. A. B. CSMA/CD.

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Ethernet

Ethernet. Ethernet (802.3). 1-persistent CSMA, CD, binary exponential backoff Carrier sense: station listens to channel first. 1-persistent: If idle, station may initiate transmission Collision Detection: continuously monitor channel and if collision, abort transmission immediately.

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MAC continued

MAC continued. Ethernet (802.3). 1-persistent CSMA/CD + binary exponential backoff Carrier sense: station listens to channel first 1-persistent: If idle, station may initiate transmission

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Metro/Wide Area Ethernet

Metro/Wide Area Ethernet. Part 1: Review of Ethernet Technologies Pierre Thiry, CNIT. Part 1: Ethernet: history and new trends (Gbit and 10Gbit Ethernet). Outline: A few historic dates What is IEEE 802.3: 10Base , 100Base, 1000Base and 10000Base CSMA/CD, Hubs & Switches

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Exercises on Ch. 14.6.2 , Ch. 15

Exercises on Ch. 14.6.2 , Ch. 15. Victor T. Norman Professor Extraordinaire. Reliable, Fair Communication in an Unguided Transmission Medium.

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