Scott,
Yes the Fabricpath is supported on N6K.
http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus6000/sw/fabricpath/6x/fp_n6k_config/fp_n6k_NewChange.html
2- License:-
Licensing Requirements for FabricPath
FabricPath requires an Enhanced Layer 2 license. You must install this license on every switch in a FabricPath network.
In addition, if you want to take advantage of the Layer 3 routing interactions with FabricPath, you must install a LAN Base Services license on all switches with a Layer 3 card.
HTH
Regards
Inayath
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