C
ONNECTIVITY
R
ULES
2-5
Connectivity Rules
When adding hubs (repeaters) to your network, please follow the standard
connectivity rules for Ethernet and Fast Ethernet. However, note that
because switches break up the path for connected devices into separate
collision domains, you should not include the switch or connected cabling
in your calculations for cascade length involving other devices.
100 Mbps Fast Ethernet Collision Domain
10 Mbps Ethernet Collision Domain
Maximum Fast Ethernet Cable Distance
Type Cable Type Max. Cable Length
100BASE-TX Category 5 100-ohm UTP or STP 100 m (328 ft)
100BASE-FX
Multimode
50/125 or 62.5/125 micron core
multimode fiber (MMF)
2 km (1.24 miles)
Maximum Ethernet Cable Distance
Cable Type Maximum Length
Twisted Pair, Categories 3, 4, 5 100 m (328 ft)
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