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Superior DSN Presentation Template Ethernet Mbps Evropský sociální fond Praha & EU: Investujeme do vaší budoucnosti Ethernet – Mbps – v0.9 Peter Macejko 1/26 Historie ● ~1970 - Xerox Palo Alto Research Center (PARC) ● 2,94Mb/s, spojoval počítače s laserovými tiskárnami ● Bob Metcalfe, David Boggs Ethernet – Mbps – v0.9 Peter Macejko 2/26 Historie ● 1980 – Ethernet Blue Book – DIX standard ● thick ethernet - 10BASE5 ● 1982 – DIX standard ver 2.0 ● 1983 – IEEE 802.3 ● 1985 – thin ethernet – cheapernet – 10BASE2 ● 1987 – 1 Mbps ethernet pomocí TP ● 1990 – 10BASE-T ● 1993 – 10BASE-F Ethernet – Mbps – v0.9 Peter Macejko 3/26 Ethernet – struktura sítě Ethernet – Mbps – v0.9 Peter Macejko 4/26 IEEE 802.3 – architektura Ethernet – Mbps – v0.9 Peter Macejko 5/26 IEEE 802.3 – rámce Ethernet – Mbps – v0.9 Peter Macejko 6/26 Mbps technologie ethernetu ● 10BASE-x technologie ● 10BASE-5, 10BASE-2 ● 10BASE-T ● 10BASE-FL, 10BASE-FB, 10BASE-FP ● 100BASE-x technologie ● 100BASE-Tx/Fx ● 100BASE-T4, 100BASE-T2 Ethernet – Mbps – v0.9 Peter Macejko 7/26 IEEE 802.3 10BASE5 ● médium: 50Ω 0,375“ koaxiální kabel (thick coax) ● délky: ● segment max 500m, max 4 opakovače (2 prázdné seg.) ● Pravidlo 5-4-3-2-1 – 5 segmentů – 4 opakovače – 3 segmenty se stanicemi – 2 segmenty bez stanic, – 1 kolizní doména ● stanice: min 2,5m; max 500m; 100st/seg Ethernet – Mbps – v0.9 Peter Macejko 8/26 IEEE 802.3 10BASE5 ● kódóvání: Manchester CLK DATA 0 1 0 1 0 0 1 1 1 0 1 Manchester ● efektivita: 2.00 baud/bit Ethernet – Mbps – v0.9 Peter Macejko 9/26 IEEE 802.3 10BASE5 ● připojování: Ethernet – Mbps – v0.9 Peter Macejko 10/26 IEEE 802.3 10BASE5 ● konektory: Ethernet – Mbps – v0.9 Peter Macejko 11/26 IEEE 802.3 10BASE2 ● médium: 50Ω 0,2“ koaxiální kabel (RG-58) ● délky: ● segment max 185m, max 4 opakovače (2 prázdné seg.) ● pravidlo 5-4-3-2-1 ● stanice: min 0,5m; max 185m; 30st/seg ● kódóvání: Manchester Ethernet – Mbps – v0.9 Peter Macejko 12/26 IEEE 802.3 10BASE2 ● připojování: Ethernet – Mbps – v0.9 Peter Macejko 13/26 IEEE 802.3 10BASE2 ● konektory: Ethernet – Mbps – v0.9 Peter Macejko 14/26 IEEE 802.3 10BROAD36 ● médium: 75Ω koaxiální kabel (CATV) ● délky: ● segment max 1800m, celkem 3600m ● kódóvání: NRZ s PSK, 14MHz + 4MHz ● dual vs single cable systém ● headend Ethernet – Mbps – v0.9 Peter Macejko 15/26 IEEE 802.3 10BROAD36 ● připojování: Ethernet – Mbps – v0.9 Peter Macejko 16/26 IEEE 802.3 10BASE5 FOIRL ● FOIRL - Fiber Optic Inter-Repeater Link ● médium: optika ● délky: ● propojení na délku max 1000m Ethernet – Mbps – v0.9 Peter Macejko 17/26 IEEE 802.3 1BASE5 ● aka StarLAN ● médium: TP ● délky: ● hub-hub, hub-stanice 250m ● max vzdálenost od kořene 5 Ethernet – Mbps – v0.9 Peter Macejko 18/26 IEEE 802.3 1BASE5 ● topologie Ethernet – Mbps – v0.9 Peter Macejko 19/26 IEEE 802.3 10BASE-T ● médium: UTP (min cat. 3), použity 2 páry ze 4 ● délky: ● 100m (5+90+5) ● kódóvání: Manchester ● detekce kolize na opakovačích Ethernet – Mbps – v0.9 Peter Macejko 20/26 IEEE 802.3 10BASE-T ● spojování Ethernet – Mbps – v0.9 Peter Macejko 21/26 IEEE 802.3 10BASE-? ● interoperabilita Ethernet – Mbps – v0.9 Peter Macejko 22/26 IEEE 802.3 10BASE-? ● bridging Ethernet – Mbps – v0.9 Peter Macejko 23/26 Přepínač - učení Ethernet – Mbps – v0.9 Peter Macejko 24/26 Přepínač – metody přepínání Ethernet – Mbps – v0.9 Peter Macejko 25/26 Přepínač – metody přepínání Ethernet – Mbps – v0.9 Peter Macejko 26/26.
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