Ethernet Protocol, standard Ethernet, fast Ethernet, gigabit Ethernet, 10 gigabit Ethernet

1. CH-13
WIRED LANS: ETHERNET
UNIT-III

2. OUTLINE
 IEEE standards for LAN/MAN/WAN
 Traditional Ethernet
 Unicast and multicast addresses
 Fast Ethernet
 Gigabit Ethernet
 Ten-Gigabit Ethernet
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3. IEEE STANDARDS
 Project 802
 standards for enabling intercommunication among equipment from a variety of
manufacturers
 E.g.,
 IEEE 802.3  Ethernet
 IEEE 802.11  Wireless LAN (Wi-Fi)
 IEEE 802.15  Wireless PAN (Bluetooth, etc)
 http://en.wikipedia.org/wiki/IEEE_802
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4. IEEE STANDARDS FOR LANS
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5. LOGICAL LINK CONTROL SUBLAYER
 Provides flow and error control for upper layer protocols
 Most upper layer protocols (such as IP) do not require such services
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DSAP – Destination Service
Access Point
SSAP – Source Service
Access Point
(Similar to TCP/IP ports)

6. WIRED ETHERNET
 "Traditional" or "Original" Ethernet created at Xerox's Palo Alto Research
Center (PARC) in 1976
 Ethernet standards are set by IEEE 802.3 working group
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7. EVOLUTION OF ETHERNET
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Ethernet Evolution
Standard
Ethernet
(10 Mbps)
Fast
Ethernet
(100 Mbps)
Gigabit
Ethernet
Ten-Gigabit
Ethernet
100-Gigabit
Ethernet

8. IEEE 802.3 MAC FRAME
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9. MIN AND MAX FRAME LENGTH
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10. ETHERNET ADDRESSES
 48 bits (6 bytes) in length
 Uniquely assigned to each Ethernet network interface card (NIC)
 Usually written in hexadecimal notation
 E.g.,
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11. UNICAST VS. MULTICAST
ADDRESSES
 A unicast address defines one recipient
 A multicast address defines a group of recipients
 The broadcast address defines a group of all
stations in the same LAN
 A special case of multicast addresses
 All bits are 1s
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12. EXAMPLE
 Define the type of the following destination addresses:
 4A:30:10:21:10:1A
 47:20:1B:2E:08:EE
 FF:FF:FF:FF:FF:FF
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13. STANDARD ETHERNET

14. CATEGORIES OF STANDARD ETHERNET
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15. ENCODING IN STANDARD
ETHERNET
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16. 10BASE5 IMPLEMENTATION
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17. 10BASE2 IMPLEMENTATION
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18. 10BASE-T IMPLEMENTATION
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CAT3 Cable

19. 10BASE-F IMPLEMENTATION
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20. STANDARD ETHERNET SUMMARY
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21. RAISING THE BANDWIDTH
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22. BRIDGED ETHERNET
 A bridge divides a network into two or more segments
 Each segment is independent of one another, bandwidth-wise
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23. COLLISION DOMAIN
 Bridges help split collision domain into smaller
ones
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24. SWITCHED ETHERNET
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25. FULL-DUPLEX ETHERNET
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26. FAST ETHERNET

27. FAST ETHERNET
 Data rate: 100 Mbps
 Standard  IEEE 802.3u
 Backward-compatible with Standard Ethernet
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28. FAST ETHERNET TOPOLOGIES
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29. FAST ETHERNET
IMPLEMENTATIONS
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30. ENCODING FOR 100BASE-TX
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31. ENCODING FOR 100BASE-FX
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32. ENCODING FOR 100BASE-T4
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33. FAST ETHERNET SUMMARY
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34. GIGABIT ETHERNET

35. GIGABIT ETHERNET
 1000 Mbps
 Standard  IEEE 802.3z, 802.3ab
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36. GIGABIT ETHERNET ENCODING
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37. 4D-PAM5 ENCODING
 Used in 1000Base-T
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38. GIGABIT ETHERNET SUMMARY
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39. 10-GIGABIT AND UP
 IEEE Standards
 802.3ae  10GbE over fiber
 802.3ak  10GbE over twin axial cable (10GBASE-CX4)
 802.3an  10GbE over UTP (10GBASE-T)
 802.3ba  40GbE and 100GbE
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