1 / 11

Open Systems Interconnection (OSI)

Open Systems Interconnection (OSI). Supplemental Material. Internetworking. Open Systems Interconnection (OSI). Developed by the International Organization for Standardization (ISO) in 1984 The primary architectural model for intercomputer communications.

clarice
Télécharger la présentation

Open Systems Interconnection (OSI)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Open Systems Interconnection (OSI) Supplemental Material

  2. Internetworking

  3. Open Systems Interconnection (OSI) • Developed by the International Organization for Standardization (ISO) in 1984 • The primary architectural model for intercomputer communications. • A conceptual model composed of seven layers, each specifying particular network functions. • Describes how information from a software application in one computer moves through a network medium to a software application in another computer.

  4. OSI Model F-D’s Model Internet Model OSI Model Application layer: http, telnet, snmp, smtp, nfs, ftp Application layer TCP, UDP Network layer IPv4, IPv6 Data Link layer Data Link Layer (HDLC) Physical layer Physical layer

  5. OSI Model • Network layer • provides routing and related functions • Transport layer • implements reliable internetwork data transport services • Session layer • establishes, manages and terminates communication sessions between presentation layer entities • Presentation layer • provides a variety of coding and conversion functions • Application layer • closest to the end user

  6. Protocols • Protocols fall into one of the following groups: • LAN protocols • WAN protocols • Network protocols • Routing protocols

  7. Interaction between Layers A data link layer contact three other layers

  8. Headers and Data

  9. Physical-layer Implementation

  10. OSI Data Link Layer IEEE has subdivided data link layer into two sub-layers.

More Related