[cisco-voip] CUCM upgrade from 10.5 to 11.5

[Matthew Collins]

Agree with Lelio but sometimes parallel upgrade are just not possible.

I’ve done 3 x 10.5 to 11.6 direct upgrade recently any only had one issue that wasn’t directly related to the upgrade. Other than that they have been pretty smooth.

In your pre-checks don’t just check DB replication but also CUC and UCCX replication on the respective servers (utils uccx/cuc dbreplication status). Plus check from the pub and sub as on a CUC upgrade recently it kept failing, Turned out CUC replication wasn’t set up correctly. Ran the command from the Pub and it stated everything was good, Ran from the Sub said it was failed. Ended up re-building the CUC Sub. The issue came about from a host name change years back and some of the tables where not updated on the sub.

Also double check the memory requirements. As 11.x requires 2 extra gig most of the OVA’s.

Upgrade timings going from 10.5 to 11.5/6

Memory upgrade where completed prior to upgrades.

CUCM Upgrade Pub 90 Mins 7.5k OVA
CUCM Upgrade Subs 60 Mins
IM&P Upgrade Pub 70 Mins 5K OVA
IM&P Upgrade Sub 50 Mins

CUCM Switch Versions Pub 40 Mins
CUCM Switch Versions Subs 30 Mins
IM&P Switch Versions Pub 30 Mins
IM&P Switch Versions Sub 30 Mins

UCCX Upgrade Pub 80 Mins – 300 Agent OVA
UCCX Upgrade Sub 60 Mins
UCCX Switch Versions Pub 45 Mins
UCCX Switch Versions Sub 30 Mins



Regards

Matthew Collins


From: cisco-voip <cisco-voip-bounces at puck.nether.net> On Behalf Of Lelio Fulgenzi
Sent: 17 January 2019 16:37
To: SK <cciecollab2017 at gmail.com>; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CUCM upgrade from 10.5 to 11.5


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 | lelio at uoguelph.ca<mailto:lelio at 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-bounces at puck.nether.net<mailto:cisco-voip-bounces at puck.nether.net>> On Behalf Of SK
Sent: Thursday, January 17, 2019 10:48 AM
To: cisco-voip at puck.nether.net<mailto:cisco-voip at 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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