Família IEEE802
Família IEEE802 Os protocolos da Família IEEE802 relacionam-se com os níveis 1 e 2 (Physical e Data Link) do modelo OSI/IOS. O nivel Data Link foi dividido em Logical Link Control (LLC) e Media Access Control (MAC) Data link layer LLC Sublayer MAC Sublayer Physical layer
Escopo da Família 802
Uma GRAAANDE família! IEEE 802.1 Higher layer LAN protocols IEEE 802.2 Logical link control IEEE 802.3 Ethernet IEEE 802.4 Token bus (disbanded) IEEE 802.5 Token Ring IEEE 802.6 Metropolitan Area Networks (disbanded) IEEE 802.7 Broadband LAN using Coaxial Cable (disbanded) IEEE 802.8 Fiber Optic TAG (disbanded) IEEE 802.9 Integrated Services LAN (disbanded) IEEE 802.10 Interoperable LAN Security (disbanded)
IEEE 802.11 Wireless LAN (Wi-Fi certification) IEEE 802.12 demand priority IEEE 802.13 (not used) IEEE 802.14 Cable modems (disbanded) IEEE 802.15 Wireless PAN IEEE 802.15.1 (Bluetooth certification) IEEE 802.16 Broadband Wireless Access (WiMAX certification) IEEE 802.16e (Mobile) Broadband Wireless Access IEEE 802.17 Resilient packet ring IEEE 802.18 Radio Regulatory TAG IEEE 802.19 Coexistence TAG IEEE 802.20 Mobile Broadband Wireless Access IEEE 802.21 Media Independent Handoff IEEE 802.22 Wireless Regional Area Network
IEEE802.3 Ethernet CSMA/CD
10Base-T Quick Overview IEEE-spec 802.3 Wire speed 10 Mbps Cable type UTP CAT 3, 4 and 5 Connector type RJ45 Used pins 1 & 2, 3 & 6 Max. length of a segment 100m/328ft Max. number of taps per segment 2 Max. amount of stations per network 1024 Max. amount of repeaters 4 Topology Star
Conector RJ45 RJ45 pinning Pin Signal 1 Transmit (positive) 2 Transmit (negative) 3 Receive (positive) 6 Receive (negative) Straight cable Crossed cable 1 - 1 1 - 3 2 - 2 2 - 6 3 - 3 3 - 1 6 - 6 6 - 2
Categorias de cabos UTP
10BASE-F, (Fiber Ethernet) 10Base-F Quick Overview IEEE-spec 802.3 Max. speed 10 Mbps Cable 50, 62.5, or 100 µm (62.5 µm most common) Connectors dual ST or dual SMA 905 Max. length of a segment up to 2 km, depending on link budget Max. number of taps per segment 2 Max. amount of stations per network 1024 Max. amount of repeaters 4 Topology Star To Infinity ... And Beyond !