ETHERNET DEVICES

1. HUB:

  • Physical layer device.
  • Interconnects various nodes on a b/w.
  • A frame arriving on one line is broadcast on all others.
  • Hubs don’t usually amplify signal unlike repeater.

   2. BRIDGE:

  • Connects 2 or more LANs.
  • Operate on DLL.
  • Examines the dest MAC of incoming frame & outputs on appropriate interface.

   3. SWITCHES:

  • Operate on DLL.
  • Have a large no of interfaces.
  • Compared to a bridge.
  • Used for interconnecting LANs or Computer.
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