3Com 5112M-TPLS 1. Seven Basic Network Rules Continued, Definition, Recommendations/Notes

Table 2-1. Seven Basic Network Rules (Continued)

Rule	Definition	Recommendations/Notes
4	Certain LAN devices	Many LAN products delay the signal
	on the network shrink	that goes through them. This is
	the maximum Fiber	known as equivalent distance. Every
	Ethernet network	microsecond delay reduces the
	diameter to less than	maximum link distance. In fact,
	4200 meters.	every microsecond delay shrinks the
		network diameter by approximately
		200 meters of fiber cable. Table 2-2
		lists the Equivalent Distances for
		other 3Com products.
5	Assume that one	This is a conservative rule. For
	meter of coaxial or	example, the actual equivalence is
	twisted pair is equal to	about 1.1 meters of coaxial for
	one meter of fiber	every meter of fiber. For simplicity,
	cable.	assume one meter.

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