Layer 2 in the OSI model. The Data Link Layer defines procedures for data transmission, retransmission, error detection, and error correction. The Data Link Layer is divided into two sub-layers, namely LLC as the upper sublayer and MAC as the lower sublayer. Ethernet, Token Ring, Frame Relay, ATM, and PPP are examples of Layer 2 protocols. Also see OSI model.
The second layer of the OSI Reference Model. The OSI model has been designated by ITU and ISO to enable data communication between different computers, and it standardizes both the overall network structure as well as protocols used therein. Data Link Layer is responsible for transmitting data between relay points. see OSI Reference Model
The network protocol module (defined as level 2 by OSI) which defines how packets for a specific type of LAN or network trunk line are addressed, structured, & delimited. The Data Link Layer has an interface downward to the Physical Layer, & upwards to the Network Layer.
The logical entity in the OSI model concerned with transmission of data between adjacent network nodes; it is the second layer processing in the OSI model, between the Physical and the Network Layers.
Layer-2 of the OSI model. Split into two sub-layers called LLC and MAC. The MAC layer is responsible for accessing a shared media and implements some form of access technique such as CSMA/CD/CA or token passing, performs error detection, and requires the use of physical addressing. LLC comes in different flavors but can if required implement error correction and flow-control.
Layer 2 of OSI Reference Model and most other networking architecture's. Converts an unreliable transmission channel into a reliable one.
Layer 2 in the Open Systems Interconnect (OSI) 7-Layer Network Layer Reference Model. Provides communication among two or more systems. The Data Link Layer performs error checking, addressing, and other functions that are required to ensure accurate data transmission between adjacent systems.
The Operating System Interconnection (OSI) layer responsible to transfer data between two network entities across a single physical connection or series of bridged connections.
Layer 2 of the OSI model, responsible for encoding data and passing it to the physical medium. The IEEE divides this layer into the LLC (Logical Link Control) and MAC (Media Access Control) sublayers.
The OSI layer that is responsible for data transfer across a single physical connection, or series of bridged connections, between two Network entities. [Source: RFC1208
Layer Two of the ISO OSI model is responsible for the transmission of information over a physical medium. After establishing the link it ensures the error-free delivery of the information through the use of error detection, error recovery and flow control. The contention access methods such as CSMA/CD and Token passing are Layer Two activities.
Layer 2 of the seven-layer OSI model. The data link layer is concerned with managing network access, for example, performing collision sensing and network control. Also, if the data link layer detects an error, it arranges to have the sending computer resend the corrupt packet.
Layer 2 of the OSI reference model. This layer passes data between the network layer and the physical layer. The data link layer is responsible for transmitting and receiving frames. It usually includes both the media access control (MAC) protocol and logical link control (LLC) layers.
In the ISO reference model, the network layer above the Physical Link layer that ensures the safe transport of datagrams between communication endpoints.
Layer 2 in ADSI, it is responsible for the first level of framing (or de-framing) of the data to be transmitted (or received). The Data Link Layer includes the appending (or checking) of Checksum/CRC data as well as preamble sequence generation (or removal).
The Data Link Layer (DLL) controls transmission of messages onto the fieldbus, and manages access to the fieldbus through the Link Active Scheduler (LAS). The DLL used by FOUNDATION fieldbus is defined in IEC 61158 and ISA S50. It includes Publisher/Subscriber, Client/Server and Source/Sink services.
Layer 2 of the seven-layer OSI reference model for communication between computers on networks. This layer defines protocols for data packets and how they are transmitted to and from each network device. It is a medium-independent, link-level communications facility on top of the Physical layer, and is divided into two sublayers: medium-access control (MAC) and logical-link control (LLC).
The layer in a network model that handles communication between physical hosts.
A logical portion of data communication control that mainly ensures that communication between adjacent devices is error free.
In the OSI layering model, the data link layer (layer 2) is above the physical layer. Protocols for this layer describe methods for error-free communication between devices across the physical link. One protocol used in this ISDN layer is CCITT recommendation Q.921, also known as Link Access Procedures on the D Channel (LAPD). See also ISDN, Link Access Procedures on the D Channel (LAPD), Open System Interconnect (OSI).
Layer 2 of the OSI model. The entity which establishes, maintains, and releases data-link connections between elements in a network. Layer 2 is concerned with the transmission of units of information, or frames, and associated error-checking.
The data link layer is layer two of the seven-layer OSI model as well as of the five-layer TCP/IP reference model. It responds to service requests from the network layer and issues service requests to the physical layer.
