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Local Area High Speed Networks by Dr. Sidnie Feit

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Summary Points

  • Building a big physical LAN can pay off in equipment savings and in the capability to include high-bandwidth backbone links.

  • Broadcasts and flooded unicast frames can generate a lot of LAN traffic.

  • Virtual LANs were introduced as a way to control the traffic flows on a physical LAN.

  • Systems that support VLAN protocols are said to be VLAN-aware.

  • VLANs can be used to confine traffic within a workgroup, give selected stations access to a server, carry data for specified protocols, or isolate traffic for reasons of security.

  • A VLAN can be defined by listing switch ports that participate in the VLAN.

  • A link between a pair of VLAN switches is called a trunk. Traffic belonging to several VLANs can share a trunk.

  • A link that connects one or ...

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