If you are referring to —a networking technology used in IEEE 802.1aq—and looking for a paper that links this to VCF (Virtual Chassis Fabric) or similar architectures:

An file is a proprietary contact backup format created by Samsung Smart Switch . Because it is often encrypted or stored in a specialized database format, there is no direct "one-click" online link to convert it to a .vcf (vCard) file without the original software .