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 model and MAC layer.
References in periodicals archive ?
ATSC members have ratified the Link Layer Protocol and Audio and Video Watermark Emission standards to be part of the ATSC 3.
The world' first controller chip that has integrated an IDB-1394-compliant physical layer and link layer, the MB88387 features a digital transmission content protection (DTCP) protocol to enable two data streams to be coded or encoded simultaneously.
PCI Express supports two levels of Error Correction Codes (ECC) checking for both Data Link Layer and Transaction Layer errors.
The Aurora link layer protocol uses gigabit serial technology at the physical layer and scales from 622 Mbps to 3.
This block is responsible for managing the Task File and putting the register-level commands in a format that can be used by the Link layer for further processing.
The most unreliable part of the link is the air link, so flash-OFDM has link protocols built into the MAC that offer a very reliable link layer to the IP traffic, along with proprietary error-control mechanisms that are not end to end.