Classification of LANs

• Modulation

  • Baseband
  • Carrier band
  • Broadband

• Contention management

  • Carrier Sense Multiple Access with Collision Detection Token Passing

• Transmission medium

  • Copper (twisted pair/coaxial
  • Fiber
  • Wireless (WLAN)

• Transmission speed

  • <=1 Mb/s (Local Talk, StarLAN)
  • 4 – 16 Mb/s (traditional LANs: Ethernet, Token Ring)
  • 25 - 155 Mb/s (fast LANs: FDDI, Fast Ethernet, ATM)
  • >= 622 Mb/s (very fast LANs: ATM, Gigabit Ethernet…)

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