I have more than fifteen CAS’s in different geographical location (state) and controlled by CAM HA that is located in another location (state). I’m currently running NAC version 4.5 and planning to upgrade to 4.7.1. due to Windows 7 compatibility problem. My question is that, what is the easiest way to upgrade to 4.7.1 without visiting each location to upgrade CAS’s? Is there away to push the new version from the CAM? Visiting each location is not that convenient. Please let me know.