layer in the {OSI}

seven layer model. The data link layer splits data into frames (see fragmentation) for sending on the physical layer and receives acknowledgement frames. It performs error checking and re-transmits frames not received correctly. It provides an error-free virtual channel to the network layer. The data link layer is split into an upper sublayer, Logical Link Control (LLC), and a lower sublayer, Media Access Control (MAC).

Example protocols at this layer are ABP, Go Back N, SRP.

Last updated: 1995-02-14

Nearby terms:

working> Layer two, the second lowest layer in the {OSI} layer in the {OSI} Control} (MAC).

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