I have an auto-sensing (not auto-negotiation) card that thinks its connected to a 10 mbps switch port. The switch port is actually configured for a fixed speed of 100 mbps. When I disabled auto-mdix on the port the card suddenly started linking at 100 mbps.
I was told that the auto-mdix used FLPs. This I imagine was confusing my auto-sensing card (please don't tell me to get a newer card, for various reasons that is not an option).
My question is how does auto-mdix actually work?