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Wednesday, October 14, 2015

Ethernet Version 2 and IEEE 802.3 Physical Characteristics


The table below lists the Ethernet version 2 and IEEE 802.3 physical characteristics of the different Ethernet cables.
  Ethernet IEEE 802.3
10Base5 10Base2 10BaseT
Data rate (Mbps) 10 10 10 10
Signaling method Baseband Baseband Baseband Baseband
Maximum segment length (m) 500 500 185 100 (Unshielded twisted pair - UTP)
Media 50-ohm coax (thick) 50-ohm coax (thick) 50-ohm coax (thin) Unshielded twisted pair (UTP)
Topology Bus Bus Bus Star
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IEEE 802.3u Physical Characteristics

The table below lists the IEEE 802.3u physical characteristics for the Ethernet 100BaseT cable.
Parameter 100BaseT
Data rate (Mbps) 100
Signaling method Baseband
Maximum segment length (in meters) 100 m between DTE7 and repeaters
Media RJ-45: Category 5 UTP MII: Category 3, 4, or 5, 150-ohm UTP or STP, with appropriate transceiver
Topology Star/Hub


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