There is no perpetual for 9K, can you confirm? "The software license for the Cisco Catalyst 9000 switches is available only through the subscription model." - the slide at 9:33 tells different than Cisco document.
Thanks for the inquiry. The software features available on the switch fall under base or add-on license levels. A base license is a perpetually valid, or permanent license. There is no expiration date for such a license. An add-on license provides Cisco innovations on the switch, and on the Cisco Digital Network Architecture Center (Cisco DNA Center). An add-on license is valid only until a certain date. You can purchase an add-on license for a three, five, or seven year subscription period. Reference: cs.co/6050OBLTG and cs.co/6051OBLTH Please also check out the existing discussion regarding DNA Licensing: cs.co/6052OBLTy on cs.co/6053OBLTJ. Feel free to ask a question based on your scenario for quick peer support.