Token ring

  Advantage:
    Each device guaranteed a chance to communicate, no matter how many 
      devices on network.

    In most situations, performed better (faster) than 10Mib Ethernet.

  Disadvantage:
    Proprietary (IBM) technology - license fee.

    More complex electronics $.

    Very large rings run extremely slow even if no load.

    (Switched and very high speed 100Mb/1Gb Ethernet beat out token ring)

    Physical implementation of connections rather large.