Allied-telesis AT-MR820T Manual de usuario descargar pdf (Pagina 52)

Technical Specifications

5 - 4 - 3 Rule

In addition to the requirements outlined in Chapter 3, Table 2, follows

the “5-4-3 rule” to ensure that your configuration does not exceed the

maximum 10Base5 data transmission path (the longest path through

any given network).

The 5-4-3 rule describes the maximum path between any two devices

or nodes (PCs or other stations) on the network. There can be:

❑ Up to five segments in series

❑ Up to four repeaters or multiport hubs

❑ Up to three populated segments (that is, segments attached to

two or more PCs)*

* 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.

Note

This rule is completely consistent with the IEEE 802.3

speciﬁcation, and is meant only to summarize the

conﬁguration speciﬁcation.

MRx20T(UTP)Ver6_Book Page 30 Thursday, April 3, 1997 5:18 PM

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Allied-telesis AT-MR820T Manual de usuario Pagina 52