Proceed with extreme caution. You may want to have that end of life ACS deployment bake for another six months. You will want to have the highest level of Cisco engineering engaged should you choose to go this direction. On Oct 6, 2017, at 3:48 PM, Mann, Jason <jamann@mt.gov<mailto:jamann@mt.gov>> wrote: As would I. We are going to start a project that is replacing ACS 5.7 with ISE 2.X -----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Christopher J. Wolff Sent: Friday, October 6, 2017 2:41 PM To: nanog@nanog.org<mailto:nanog@nanog.org> Subject: Cisco ISE Is anyone successfully deploying ISE 2.X? I’m six months into it on about 10,000 endpoints and it seems like it’s a highly challenged product. I’d love to hear your experiences on or off-list. Thanks in advance.