Ethernet

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Ethernet
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LAN NIC Shipments
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Ethernet

• Topology
• Bus or Star (bus)
• MAC
• CSMA/CD

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Ethernet Names

• 10BASE-T
• 10 indicates the data rate
• BASE indicates baseband transmission
• T indicates the physical layer

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Varieties of Ethernet

• Classic Ethernet
• 10 Mbps
• Fast Ethernet
• 100 Mbps
• Gigabit Ethernet
• 1000 Mbps (1 Gbps)
• 10 Gigabit Ethernet
• 10,000 Mbps (10 Gbps)

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Classic Ethernet
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10BASE-T
Uses Category 3 UTP Maximum of
4 Repeaters Maximum of 1024 nodes Single cable
segment up to 100 meters Maximum diameter of 500
meters
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Cascading Repeaters
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10BASE-F

• Created to allow larger network diameters
• 10BASE-FP
• Uses a passive hub
• 10BASE-FL
• Node-to-node, repeater-to-repeater up to 2 km
• 10BASE-FB
• Repeater-to-repeater up to 30 km with repeaters
  every 2 km

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Fast Ethernet
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Fast Ethernet
Maximum of 2 Repeaters Maximum of
1024 nodes Single cable segment up to 100
meters Maximum diameter of 205 meters
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Gigabit Ethernet
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Switch Port Sales
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Switch Port Sales Projected
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Cost Per Switch Port
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Ethernet Collision Domains
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Fast Ethernet Diameters
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10 Gigabit Ethernet (10GbE)

• Full-duplex only so CSMA/CD is not necessary
• Only supports fiber
• Long distance allows it to be used to implement
  MANs
• Includes features that allow it to interface with
  existing high speed WAN architectures