Internetworking

1 min read Updated Sun May 03 2026 15:26:32 GMT+0000 (Coordinated Universal Time)

Internetworking connects different networks that may use different technologies.

Challenging because:

  • Different protocols
  • Different addressing schemes
  • Different packet sizes
  • Security differences
  • QoS differences

Interconnection Methods

Networks can be interconnected at different OSI layers.

LayerDevice
PhysicalRepeaters, hubs
Data LinkBridges, switches
NetworkRouters
TransportTransport gateways
ApplicationApplication gateways