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Data Link Layer Overview Data Link Layer Overview (continue) To see where the part of data link protocol lies, let us recall our 5-layer reference model Physical: describes the transmission of raw bits in terms of mechanical and electrical issues Data link: describes how a shared communication channel can be accessed, and how a data frame can be reliably transmitted
Data Link Layer Protocols - WPI Data Link Layer Protocols The data link layer provides service to the Network Layer above it: The network layer is interested in getting messages to the corresponding network layer module on an adjacent machine
Module 4 Data Link Layer - University of Waterloo Link layer: context datagram transferred by different link protocols over different links: e g , Ethernet on first link, frame relay on intermediate links, 802 11 on last link each link protocol provides different services e g , may or may not provide rdt over link
Data Link Protocol - Springer 7 1 Basic Data Link Protocol Considerations In the preceding chapter the mechanical and electrical, Le , physical, interface between DTE and DCE was considered, but such an interface alone is usually insufficient to handle conventional digital telecommunica tions between remotely located terminals_ The reason is that the physical level, along with the accompanying modem, only passes bits
Chapter 3: Data Link Layer - Washington University in St. Louis Link Access Procedure for half-duplex links (LAPX): Teletex Point-to-Point Protocol (PPP): Internet Logical Link Control (LLC): IEEE Advanced Data Communications Control Procedures (ADCCP): ANSI V 120 and Frame relay also use HDLC
Chapter 3: The Data Link Layer - University of Diyala To accomplish these goals, the data link layer takes the packets it gets from the network layer and encapsulates them into frames for transmission Each frame contains a frame header, a payload field for holding the packet, and a frame trailer, as illustrated in Figure 3 1 Frame management forms the heart of what the data link layer does In the following sections we will examine all the
Data Link Protocols Data Link Protocols TCP IP Suite and OSI Reference Model The TCP IP protocol stack does not define the lower layers of a complete protocol stack In this lecture, we will address how the TCP IP protocol stacks interfaces with the data link layer