Hub/Switch Installation Guide SMC6724L2

N ETWORK P LANNING
2-6
Maximum Network Diameter Using Repeaters
Maximum Fast Ethernet Cable Distance
10 Mbps Ethernet Collision Domain
SMC 5-4-3 Rule
Maximum Ethernet Cable Distance
Repeater Type
and Number
Twisted Pair
100BASE-TX
1 Class I 200 m (656 ft.)
1 Class II 200 m (656 ft.)
2 Class II 205 m (672.4 ft.)
Cable Type Connecting Max. Distance
Twisted Pair Any two devices 100 m (328 ft.)
Fiber Switch to switch, server or PC
Half duplex 412 m (1,351.4 ft.)
Full duplex 2 km (1.24 mi.)
Between any two PCs or other stations in the same 10 Mbps collision
domain, there may be:
• up to 5 link segments in series,
• up to 4 repeaters (hubs),
• up to 3 populated cable segments, that is, segments
attached to two or more PCs (coax networks only).*
* The remaining two segments are unpopulated; these are known as
inter-repeater links or IRLs. This distinction between populated and
unpopulated segments is significant for coax networks only.
Cable Type Maximum Length
Twisted Pair, Categories 3, 4, 5 100 m (328 ft.)
Thin Coax 185 m (607 ft.)
External Transceiver Drop 50 m (165 ft.)