Basic HTML version of Foils prepared Dec. 6 98

Foil 18 LAN switching (3)

From Introduction to Network Security Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
LAN switch bandwidth
  • asymmetric switch: unequal bandwidth between ports
  • symmetric switch: evenly distributed bandwidth to each port
LAN switch vs. OSI RM
  • Layer 2 switch: performs switching and filtering based on MAC address; transparent to network protocols
  • Layer 2 switch with Layer 3 feature: switching decisions are based on MAC addresses and some Layer 3 traffic control features (broadcast, multicast, IP fragmentation)
  • multi-layer: makes switching decisions on the Layer 2 and Layer 3 addresses

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