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Lecture05 - The Ethernet Family

Lecture05 - The Ethernet Family - The Ethernet Family CNIT...

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10/5/2009 1 CNIT 24000 CNIT 24000 – Data Communications & Networking The Ethernet Family Objectives Identify the functions of Ethernet Correlate the Ethernet family with the IEEE standards Define the interoperability of the IEEE Ethernet reference model and the OSI model Use this knowledge in lab, future courses, & in your employment
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10/5/2009 2 What is Ethernet? Generically, it is a communication protocol that uses CSMA/CD over a variety of physical media for LANs with “sporadic but occasionally heavy traffic” Developed in the mid-1970s Published as Ethernet in the early 1980s by Xerox, DEC, & Intel – Bob Metcalfe Standardized in 1983 by the IEEE as 802.3 Why Ethernet for LANs? It’s relatively easy to understand It’s easy to implement and scale It’s affordable It’s standardized…
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10/5/2009 3 What is IEEE 802? The umbrella standard that defines the framework in which LAN / MAN communication standards and protocols to be applied LAN – A data network that is optimized for a moderate-sized geographic area – building, campus,… MAN – A data network that is optimized for a larger geographic area with moderate to high data rates What is IEEE 802? cont IEEE intends for 802-based networks to be applicable in many environments to allow transparent access to applications such as: File Transfers Email Database Access Transaction Processing While supporting network devices, such as: PCs/Servers Mass Storage Devices Network Infrastructure Monitor & Control Equipment
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