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NET4.PPT

  1. 1. Network Switches Background Information
  2. 2.  Growing local area network demands Current demands are challenging Ethernet bandwidth Demand growth will challenge Token Ring soon  Switching accommodates growth  Higher speeds with easy, cost effective migration No need to replace existing LAN products  Switching enables full duplex, doubling conventional bandwidth  Switching provides a low cost, high performance solution Why is Switching Important?
  3. 3.  Switches Simpler functions Optimized for LAN connections Lower price per port Better performance (lower latency)  Bridges and Routers More complex functions Optimized for mixed LAN and WAN connections Higher price per port Lower performance (higher latency) Switches, Bridges, and Routers
  4. 4.  Segment LANs for improved performance  Dedicated or shared  Full or Half Duplex  Cut-Thru or Store-and-Forward  Token Ring or Ethernet LAN Switch Features Shared Dedicated
  5. 5. Typical Congested LAN  4 Ethernet hubs  8 Clients/hub  2 Servers  All share 10 Mbps bandwidth Hub Hub Hub Hub
  6. 6. Add A Switch Reduce Congestion  No change to wiring  Each hub segment gets 10 Mbps  Servers at Full Duplex Switch Hub Hub Hub Hub
  7. 7. Total Switching Maximum Bandwidth  All stations on dedicated segments  Up to 8x improvement over original  High speed connections between switches Switch Switch Switch Switch Switch
  8. 8. Section end

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