Data link layer




<networking> Layer two, the second lowest 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.



< Previous Terms Terms Containing data link layer Next Terms >
data hierarchy
Data Interchange Standards Association
Data Jack
Datakit
Data Link Connection Identifier
 Alternating bit protocol
bridge
brouter
data link layer
data link level
 data link level
Data Link Provider Interface
Data Management Language
Data Manipulation Language
data mart