I inserted a SFP-GE-T (Gigabit RJ-45) transceiver in my Nexus 5548UP and I got "access down" "SFP Validation Failed" in show interface.
According to the Cisco Gigabit Ethernet Transceivers Compability Matrix the SFP-GE-T is compatible with the 5548UP.
How do I get past "SFP Validation Failed" on a SFP-GE-T transceiver on a Nexus 5548UP?