The data link layer, or layer 2, is the second layer of the seven-layer OSI model of computer networking. This layer is the protocol layer that transfers...
16 KB (2,170 words) - 17:08, 29 March 2025
of layering between the Internet protocol suite and OSI model, the link layer is sometimes described as a combination of the OSI's data link layer (layer...
6 KB (1,037 words) - 14:39, 29 July 2025
OSI model (redirect from OSI seven-layer model)
communication system are distinguished in seven abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application....
54 KB (5,624 words) - 09:46, 30 July 2025
LattisNet LocalTalk L2F Layer 2 Forwarding Protocol L2TP Layer 2 Tunneling Protocol LLDP Link Layer Discovery Protocol LLDP-MED Link Layer Discovery Protocol...
11 KB (970 words) - 22:41, 17 February 2025
protocols are widely used. The physical layer defines the means of transmitting a stream of raw bits over a physical data link connecting network nodes. The bitstream...
17 KB (1,648 words) - 17:43, 10 July 2025
Profibus (section Data link layer (OSI-Layer 2))
exchange broadcast (slave-to-slave communication) The data link layer FDL (Field bus Data Link) servicesand protocols work with a hybrid access method...
19 KB (1,709 words) - 14:37, 28 May 2025
part of its Systems Network Architecture (SNA). SDLC is used as layer 2, the data link layer, in the SNA protocol stack. It supports multipoint links as well...
13 KB (1,689 words) - 00:47, 28 September 2024
knowledge graph of 30 data layers at the intersection between humans and their environment using Semantic Web and Linked Data technologies. Open ICEcat [uk;...
21 KB (1,929 words) - 23:58, 10 July 2025
connection-oriented communication at the network or data link layer rather than the transport layer. In X.25, in telephone network modems and in wireless...
17 KB (1,645 words) - 00:06, 29 July 2025
In the OSI networking model, Data Link Control (DLC) is the service provided by the data link layer. Network interface cards have a DLC address that identifies...
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layers. The physical layer sends ones and zeros across a wire or fiber. The data link layer then organizes these ones and zeros into chunks of data and...
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between the protocol stack and the adapter driver. It resides in Layer 2, the Data Link layer, of the OSI model. This interface also enables one or more network...
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Multilayer switch (redirect from Layer 3 switch)
Multi-layer switching can make routing and switching decisions based on the following MAC address in a data link frame Protocol field in the data link frame...
13 KB (1,787 words) - 15:25, 11 July 2025
OSI protocols (section Layer 2: data link layer)
transmission media. The data link layer packages raw bits from the physical layer into frames (logical, structured packets for data). It is specified in...
11 KB (1,203 words) - 15:13, 19 November 2024
EBUS (serial buses) (section Data-link layer)
: eBUS specifications – physical layer / data-link layer V.1.3.1 (March 2007) eBUS specifications – application layer V1.6.1 (March 2007) eBus Wiki – German...
5 KB (679 words) - 03:19, 10 November 2023
Ethernet frame (redirect from End of data)
frame is a data link layer protocol data unit and uses the underlying Ethernet physical layer transport mechanisms. In other words, a data unit on an...
26 KB (3,290 words) - 22:24, 29 April 2025
VLAN (section Cisco Inter-Switch Link)
that is partitioned and isolated in a computer network at the data link layer (OSI layer 2). In this context, virtual refers to a physical object recreated...
20 KB (2,720 words) - 07:23, 19 July 2025
service requests from the transport layer and issues service requests to the data link layer. Functions of the network layer include: Connectionless communication...
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application layer only standardizes communication and depends upon the underlying transport layer protocols to establish host-to-host data transfer channels...
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that combine multiple frequency bands. OSI layer 2 (data link layer, e.g. Ethernet frame in LANs or multi-link PPP in WANs, Ethernet MAC address) aggregation...
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Medium access control (redirect from MAC layer)
logical link control (LLC) sublayer together make up the data link layer. The LLC provides flow control and multiplexing for the logical link (i.e. EtherType...
10 KB (1,261 words) - 14:01, 1 August 2025
Bit synchronization Multiplexing Equalization Channel models Layer 2, the data link layer: Channel access schemes, media access control (MAC) Packet mode...
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Point-to-Point Protocol (category Link protocols)
In computer networking, Point-to-Point Protocol (PPP) is a data link layer (layer 2) communication protocol between two routers directly without any host...
21 KB (2,284 words) - 09:40, 21 April 2025
DeviceNet (section Data link layer)
devices for data exchange. It utilizes the Common Industrial Protocol over a Controller Area Network media layer and defines an application layer to cover...
8 KB (1,081 words) - 17:23, 13 November 2024
Air interface (section Data Link Layer)
communication link between the two stations in mobile or wireless communication. The air interface involves both the physical and data link layers (layer 1 and...
4 KB (594 words) - 20:47, 11 November 2024
CAN bus (redirect from Data Length Code)
two parts: ISO 11898-1 which covers the data link layer, and ISO 11898-2 which covers the CAN physical layer for high-speed CAN. ISO 11898-3 was released...
78 KB (9,553 words) - 10:01, 18 July 2025
modems older than V.2. Asynchronous communication at the data link layer or higher protocol layers is known as statistical multiplexing, for example Asynchronous...
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Communication protocol (redirect from Protocol layer)
reported to the network layer. The exchange of data link units (including flow control) is defined by this layer. The physical layer describes details like...
64 KB (8,182 words) - 03:50, 2 August 2025
Address Resolution Protocol (section Layering)
address. ARP has been implemented with many combinations of network and data link layer technologies, such as IPv4, Chaosnet, DECnet and Xerox PARC Universal...
20 KB (2,966 words) - 04:27, 29 April 2025
the logical link control (LLC) data communication protocol layer is the upper sublayer of the data link layer (layer 2) of the seven-layer OSI model. The...
5 KB (758 words) - 21:36, 14 June 2025