Open Systems Interconnection (Osi) Model Essay

The two closely recognized earnings reference nonpluss are The spread Systems interconnection (OSI) model The Department of Defense (DoD) model Without the framework that interlocking models provide, all network hardware and software would bedevil been proprietary. Organizations would sacrifice been locked into a wholeness vendors equipment, and global networks like the Internet would have been impractical, if not impossible. Network models are organize into layers, with each layer representing a peculiar(prenominal) networking function. These functions are controlled by communications protocols, which are rules that rank end-to-end communication between devices.Protocols on one layer will act with protocols on the layer higher up and on a lower floor it, forming a protocol suite or stack. The TCP/IP suite is the most prevalent protocol suite, and is the formation of the Internet. A network model is not a physical entity there is no OSI device. Manufacturers do not a lways strictly bind to a reference models blueprint, and thus not every protocol fits perfectly within a single layer. Some protocols can function across multiple layers. *** on the whole original square copyright 2012 by Aaron Balchunas (aaronrouteralley. com), unless otherwise noted.All other material copyright of their several(prenominal) owners. This material may be copied and utilize freely, but may not be altered or sold without the express written consent of the owner of the above copyright. Updated material may be found at http//www. routeralley. com. OSI Reference Model v1. 21 Aaron Balchunas 2 OSI Reference Model The Open Systems Interconnection (OSI) model was developed by the International Organization for Standardization (ISO), and hold in 1984. It provided the first framework organisation how information should be sent across a network.