Q

Do I need a crossover cable for an uplink port?

I moved my Linksys router off an uplinked port on a 3com 16port hub to my network of 3com 3300ss switches still using the crossover cable. I've no connection now as it was working from the hub that is also connected to the same switch that I tried to transfer to. It does not appear to have an uplink switch on 3300ss. What's needed to reconnect to the switch?
If you are connected to an uplink port there is no need for a crossover cable. The port is capable of MDI/MDI-X. If you connect to like devices together you need a crossover cable. Most modern networking devices are auto-sensing and will detect the proper polarity regardless of which cable you use.
This was first published in July 2003

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