I will say one thing, if you have the opportunity to duplicate the environment in an off-line network and perform the upgrades there, then your migration will basically be downtime involved with shutting down old servers and turning up new servers. This is not trivial, by any stretch of the imagination. However, once you put some thought into it, I think you’ll find this method extremely valuable.
You work out all the kinks in the offline network and repeat until you are satisfied. You’ll need a couple of things to make this work, namely, a change freeze window and the “pre 8.0” enterprise parameter. We’ve done this twice now and it’s worked like a charm. I would hate to do upgrades on live systems. Lelio --- Lelio Fulgenzi, B.A. | Senior Analyst Computing and Communications Services | University of Guelph Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1 519-824-4120 Ext. 56354 | le...@uoguelph.ca<mailto:le...@uoguelph.ca> www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, Twitter and Facebook [University of Guelph Cornerstone with Improve Life tagline] From: cisco-voip <cisco-voip-boun...@puck.nether.net> On Behalf Of SK Sent: Thursday, January 17, 2019 10:48 AM To: cisco-voip@puck.nether.net Subject: [cisco-voip] CUCM upgrade from 10.5 to 11.5 We are planning upgrade for our CUCM - CUC -UCCX platform from 10.5 to 11.5 soon . UCCX will be on 11.6.2 mostly . I will appreciate any pointers on known bugs / challenges . Thank you .
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