Quick Reference Guide to 10-Mbps Multi-Segment Configuration
The reason for this is obvious when you consider that the IEEE engineers develop the configuration rules based on the known signal timing and electrical performance specifications of Ethernet equipment that fully conforms to the published standard. That way, the IEEE engineers can predict what the behavior of the Ethernet equipment will be, and how the signal timing will function across multiple segments.
If you use non-compliant equipment and media segments, or if you link media segments together with equipment not described in the standard, then there is no way for the engineers to know how such equipment and media segments will behave. While such an Ethernet may function perfectly well, it will be "outside the standard," and you will not be able to use the configuration guidelines to verify that it meets the specifications for round trip timing, etc. Non-compliant equipment is described in more detail in Chapter 8.
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