LAN ETHERNET & FDDI
Prof. Anish Goel
What is a LAN?
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Typical LAN Structure
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Medium Access Control Sublayer
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MAC Sub-layer
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Logical Link Control Layer
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Logical Link Control Services
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LLC PDU Structure
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Encapsulation of MAC frames
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A bit of history…
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IEEE 802.3 MAC: Ethernet
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IEEE 802.3 Original Parameters
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IEEE 802.3 MAC Frame
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IEEE 802.3 MAC Frame
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IEEE 802.3 MAC Frame
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DIX Ethernet II MAC Frame Structure
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SubNetwork Address Protocol (SNAP)
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IEEE 802.3 Physical Layer
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Ethernet Hubs & Switches
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Ethernet Scalability
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Fast Ethernet
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Gigabit Ethernet
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10 Gigabit Ethernet
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IEEE 802.5 Ring LAN
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Star Topology Ring LAN
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Token Frame Format (IEEE 802.5)
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Data Frame Format
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Other Ring Functions
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Ring Latency & Ring Reinsertion
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Ring Latency & Ring Reinsertion
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Fiber Distributed Data Interface (FDDI)
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Dual Ring Arrangement for Reliability
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FDDI Frame Format (similar to 802.5)
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Timed Token Operation
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