SMC Networks 100 manual Mbps Fast Ethernet Collision Domain, SMC 3-2 Rule for Class II Repeaters

NETWORK PLANNING

100 Mbps Fast Ethernet Collision Domain

Maximum 100BASE-FX Fiber Optic Cable Distance

100BASE-FX	50/125 or 62.5/125 micron core multimode fiber (MMF)
	Full duplex	2 km (1.24 miles)	SC or ST
100BASE-FX	9/125 9 micron core single-mode fiber (SMF)
	Full duplex	10 km (6.21 miles)	SC or ST

SMC 3-2 Rule for Class II Repeaters

Between any two PCs or other stations in the same 100BASE-TX collision domain, there may be:

•up to 3 link segments and

•up to 2 Class II repeaters (hubs)

SMC 2-1 Rule for Class I Repeaters

Between any two PCs or other stations in the same 100BASE-TX collision domain, there may be:

•up to 2 link segments and

•up to 1 Class I repeater (hub)

Maximum Network Diameter Using Repeaters

Repeater Type		Twisted Pair
	and Number	100BASE-TX
1	Class I	200 m (656 ft.)
1	Class II	200 m (656 ft.)
2	Class II	205 m (672.4 ft.)

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