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Etherner

Gigabit Ethernet

Gigabit Ethernet

Vijay Moorthy, (moorthy@cis.ohio-state.edu)

Ethernet is the world's most pervasive networking technology. Gigabit Ethernet is the latest version of Ethernet. It offers 1000
Mbps ( 1 Gbps ) raw bandwidth, that is 100 times faster than the original Ethernet, yet is compatible with existing Ethernets, as it
uses the same CSMA/CD and MAC protocols. When Gigabit Ethernet enters the market it will compete directly with ATM. This
paper presents a survey of Gigabit Ethernet technology.

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Table of Contents

1. Introduction
1.1 History of Ethernet
1.2 Gigabit Ethernet Alliance
2. Physical Layer
2.1 1000Base-X
2.2 1000Base-T
3. MAC Layer
3.1 Carrier Extension
3.2 Packet Bursting
4. GMII ( Gigabit Media Independent Interface )
4.1 PCS (Physical Coding Sublayer)
4.2 PMA (Physical Medium Attachment)
4.3 PMD (Physical Medium Dependent)
5. Buffered Distributor
6. Topologies
6.1 Upgrading server-switch connections
6.2 Upgrading switch-switch connections
6.3 Upgrading a Fast Ethernet backbone
6.4 Upgrading a Shared FDDI Backbone
6.5 Upgrading High Performance Workstations
7. ATM vs. Gigabit Ethernet
8. Summary
9. Bibliography and Links
http://www.cis.ohio-state.edu/~jain/cis788-97/gigabit_ethernet/index.htm (1 of 12) [2/7/2000 12:24:48 PM]


Gigabit Ethernet

1. Introduction
Ethernet is the world's most pervasive networking technology , since the 1970's. It is estimated that in 1996, 82% of all networking
equipment shipped was Ethernet. In 1995 ,the Fast Ethernet Standard was approved by the IEEE. Fast Ethernet provided 10 times
higher bandwidth, and other new features such as full-duplex operation, and auto-negotiation. This established Ethernet as a
scalable technology. Now, with the emerging Gigabit Ethernet standard, it is expected to scale even further.

The Fast Ethernet...