Considering 10Base-T Half Duplex...
Is the maximum segment length of 100m a timing constraint (from CSMA/CD)? Is it derived from the slot time / minimum packet size? Or is it an electrical performance constraint (attenuation etc.) of the Cat 5 cable used?
Conversely, is there a stated minimum cable length (or minimum segment length) between end device and switch required, so as to ensure Collision Detection works during Half Duplex operation?
Regards.