7 ms·
Something that always bothers me about these Pi clusters is the Ethernet cable lengths. Isn't there a minimum length?
by charlieo88 6y ago
Something that always bothers me about these Pi clusters is the Ethernet cable lengths. Isn't there a minimum length?
- dsr_ 6y ago10cm for 1000BASE-CX, nothing prior specified a minimum length.
- rwmj 6y agoThat's really interesting - do you know why there is a minimum? Maximum lengths are easy to understand because of voltage drops, interference and impedance over long distances. And of course in the old CSMA/CD days multiple senders couldn't be separated by too large a distance.
- MisterTea 6y agosignal reflection most likely. https://en.wikipedia.org/wiki/Signal_reflection https://en.wikipedia.org/wiki/Signal_reflection