IEEE 802 standards
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IEEE 802 standards

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    IEEE 802 standards IEEE 802 standards Presentation Transcript

    •  Explain the IEEE 802 networking model and related standards Guide to Networking Essentials, Fifth Edition 2
    •  Institute of Electrical and Electronics Engineers  Leading developer of industry and standards in a broad range of technologies  Mission: foster technological innovation and excellence for the benefit of humanity. Guide to Networking Essentials, Fifth Edition 3
    •  provides detailed implementation specifications for a number of networking technologies  Influential set of networking standards Guide to Networking Essentials, Fifth Edition 4
    •  The IEEE defined a set of LAN standards to ensure network interface and cabling compatibility  Project 802 (inception on February (2) of 1980) ▪ Concentrates on standards that describe a network’s physical elements ▪ NICs, cables, connectors, signaling technologies, media access control, and the like  OSI model was not standardized until 1983–1984  IEEE 802 standards predate the model  Both were developed in collaboration and are compatible with one another Guide to Networking Essentials, Fifth Edition 5
    • Guide to Networking Essentials, Fifth Edition 6
    • Guide to Networking Essentials, Fifth Edition 7 IEEE 802 Specifications (continued)
    •  MediumAccess Control  collisions  Data Communications Protocol  A protocol must also exist for transmitting data once the node has gained control of the medium and is able to transmit. Guide to Networking Essentials, Fifth Edition 8
    • Guide to Networking Essentials, Fifth Edition 9
    • Guide to Networking Essentials, Fifth Edition 10
    • Guide to Networking Essentials, Fifth Edition 11
    •  Ethernet  CSMA/CD – Carrier Sense MultipleAccess with Collision Detection  Terminates transmission when it detects collision Guide to Networking Essentials, Fifth Edition 12
    •  Token Bus  Implementing a token ring protocol on a coaxial cable  Used for industrial applications  Used by General Motors in their MAP (ManufacturingAutomation Protocol)  Not reliable Guide to Networking Essentials, Fifth Edition 13
    • Guide to Networking Essentials, Fifth Edition 14
    •  Demand Priority or High Speed Networking  100Mbps Ethernet standard over Category 3UTP  Also called 100VG AnyLAN  Carries both Ethernet andToken Ring Guide to Networking Essentials, Fifth Edition 15
    •  The OSI reference model and IEEE Project 802 define a frame of reference for networking and specify the lower-layer behaviors for most networks  Together, these models describe the complex processes and operations involved in sending and receiving information across a network  The OSI reference model separates networking into seven layers, each with its own purposes/activities  From the bottom up: Physical, Data Link, Network, Transport, Session, Presentation, and Application Guide to Networking Essentials, Fifth Edition 16
    •  Data frames consist of three parts: frame header, data section, and frame trailer  Classified as unicast, multicast, or broadcast frames  The IEEE 802 project elaborates on the functions of a network’s Physical and Data Link layers by dividing the Data Link layer into two sublayers: Logical Link Control (LLC) and Media Access Control (MAC)  Together, these sublayers handle media access, addressing, and control and provide reliable, error-free delivery of data frames from one computer to another Guide to Networking Essentials, Fifth Edition 17