Duplex negotiation over 100Base fibre

Jason Lixfeld jason+nanog at lixfeld.ca
Mon Feb 29 16:07:39 UTC 2016


My understanding is that for 1G and 10G optical networks, there is no concept of half-duplex mode, but I’m unclear about half duplex in the 100M optical world.  Specifically, if I connect two 100Base-LX (or BX) transceivers together, is there a requirement for the controller(s on either side) to select between full or half duplex, either by static configuration, or auto-negotiation?


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