Elem. Data link protocols

• DLL Interaction with the Physical Layer

  • to_physical_layer to transmit frame
  • from_physical_layer to receive frame

• DLL Interaction with the Network Layer

  • to_network_layer to pass packet upwards
  • from_network_layer: get pkt from network layer

• wait-for-event(&event) This procedure only returns when something has happened, for example a frame arrives. event says what happened (e.g., event = cksum_err).

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