This is a human-readable name identifying a licensable/toggleable feature on the device, such as fcoe or fex, though Cisco has marked this specific object as superseded by cfcFeatureCtrlName2. Because it is deprecated in favor of the 2 version, a management application still polling this original object rather than migrating to the newer one risks missing whatever additional capability the newer object series introduced, such as support for multiple-instance features. A monitoring script written years ago against this object would still technically work today, but a script written now to manage per-instance features like multiple FEX units would need to use the newer name/tag pair instead.