Friday, September 7, 2018

Can you use just one fiber strand if you wanted to only send traffic in one direction?

Let's say you wanted to physically ensure that only outbound traffic was possible from a given host.

If you had a 10G fiber connection and plugged in TX on one end and plugged in RX on the other, would you still be able to communicate (e.g. UDP send) or would the NIC or attached switch complain that it couldn’t establish full duplex and ignore the transmit side that is attached? Is this possible?

I am guessing I would need to turn off UDLD for this to work or is it not just possible?



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