Before diving into the download specifics, it is crucial to understand what the "fullk9" image represents. The Cisco IOS XRv 9000 is a virtualized version of the physical ASR 9000 series router. It runs the same IOS XR operating system used by major Service Providers.
xrv9k-fullk9-7.2.2 Release Version: 7.2.2 Platform: Cisco IOS-XRv 9000 Description: Full K9 virtual appliance image. Use Case: Suitable for x86_64 virtualization environments (VMware/VirtualBox/KVM) for feature testing.