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Local Area High Speed Networks by Dr. Sidnie Feit

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Summary Points

  • Transparent bridges learn the MAC addresses that are reached through each port and can participate in the Spanning Tree Protocol, which restructures the LAN topology automatically after a component failure.

  • In a source-routing bridged LAN, a frame carries its travel directions in a routing information field (RIF) in the frame header.

  • Source routes that cross one or more bridges are discovered by explorer frames.

  • An all-routes-explorer frame is flooded across all of the rings in the LAN. When all-routes-explorers are used, multiple active paths can carry traffic to a destination ring.

  • Spanning Tree explorer frames are forwarded through ports that are active in the Spanning Tree topology. They are used in big LANs when there is concern ...

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