data link layer

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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.

data link layer

The services in the OSI protocol stack (layer 2 of 7) that manage node-to-node transmission. See data link protocol, OSI and MAC layer.
References in periodicals archive ?
The physical and datalink layer is responsible for generating USB physical signaling, transmitting and receiving USB data packets and performing error checks.
Frame - A frame is a unit of data transmission in a network, and can also be described as a datalink layer "packet" which contains the header and trailer information required by the physical medium for synchronization and error control.
These reports provide Physical Layer and Datalink Layer statistics, PVC and link availability, latency, end-to-end throughput, protocol distribution and top IP talkers.
SATURN POS-PHY Level 2 provides a standard interface for connecting physical layer devices to frame-based datalink layer devices," said Tim Pezarro, marketing manager of ATM and SONET/SDH products at PMC-Sierra.