I have a Nexus 5548UP and an ASA 5510 with the 4GE SSM. The 4GE has SFP ports and I would like to use them and conserve my Gigabit SFP transceivers for other uses.
The Twinax will insert into the ASA 5510, but I don't get any indication from the IOS that it is working. The interface is down and shows no transceiver.
Is Twinax compatible with plain SFP ports?
Can a 4GE SSM accept Twinax connections if the speed is set to 1000 on the switch?