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Apr
Pdu In Osi Model. A protocol data unit PDU is and open-system interconnection OSI term used in telecommunications. Destination Address is the address of the peer layer. Encapsulation of data an SDU by adding a header the PCI to form a Ptotocol Data Unit processed by a lower layer Encapsulation takes place at each layer of the OSI reference model and to explain encapsulation OSI defines the concept of a service and a Service Data Unit SDU. In this reference PDU is often used synonymously with packet.
Each protocol creates a protocol data unit PDU for transmission that includes headers required by that protocol and data to be transmitted. For example the term Layer 3 PDU refers to the data encapsulated at the Network layer of the OSI model. As we mentioned earlier the data is usually broken down into different PDUs and the layers in the OSI model define how each PDU is controlled so as to make communication successful. The data to be transmitted is composed at the topmost layer of the transmitting device layer N into a protocol data unit PDU. The OSI Model Open Systems Interconnection Model is a conceptual framework used to describe the functions of a networking system. PDU relates to the initial four layers of the OSI model as follows.
A PDU represent a unit of data with headers and trailers for the particular layer as well as the encapsulated data.
At layer N-1 the SDU is concatenated with a header a footer or both producing a layer N-1 PDU. Source Address this is the address of the sending layer. A media access control protocol data unit MPDU is a message that is exchanged between media access control MAC entities in a communication system based on the layered OSI model. In this Free Networking Training Series we explored all about Computer Networking Basics in detail. As we mentioned earlier the data is usually broken down into different PDUs and the layers in the OSI model define how each PDU is controlled so as to make communication successful. OSI layer adalah ilmu tetap dalam jaringan komputer yang tidak akan pernah berubah kecuali konsep di dalamnya.