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Local Area High Speed Networks by Dr. Sidnie Feit

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Summary Points

  • Layer 2 switches are modern bridge products.

  • A bridge improves performance by keeping local traffic within a limited part of a LAN.

  • A bridge makes it possible to build a mixed-speed LAN. For example, traffic must be bridged between a 10Mbps segment and a 100Mbps segment.

  • A bridge can extend the diameter of a LAN.

  • An Ethernet transparent bridge can dynamically record the port through which a MAC address can be reached in a filtering table. This process is called learning.

  • Static entries can be configured into a filtering table and used to expedite the forwarding process, impose security constraints, and improve performance by blocking selected frames from entering parts of the LAN.

  • LAN availability can be improved by installing backup ...

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