[cisco-voip] Migration from CUCM/UCXN/UCCX 8.5 to 12.5

Thu May 28 15:08:09 EDT 2020

Sure I can fire this up

  1.  part_ , like part_local, part_ld, part_ld_privacy , etc.
  2.  FQDN, but, make sure your DNS/NTP/etc works with resiliency.
  3.  Depends on if you’re distributed, using hardware conf, transcoder cause you have some people on some sort of twizzler based connection using g729, etc
  4.  Yes, unless you have something on the other side that can’t handle these requests coming from the whole group, or again a distributed system.
  5.  SIP. MGCP is nice in a set it and forget it way, but if you want to use the gateway to do anything else like custom intercepts, redirection, hairpinning, it won’t help you. There are some features that don’t work when you go to SIP but whatever.
  6.  Why would you give anything an upper case hostname

From: cisco-voip <cisco-voip-bounces at puck.nether.net> On Behalf Of James B
Sent: Thursday, May 28, 2020 2:28 PM
To: Anthony Holloway <avholloway+cisco-voip at gmail.com>; Matthew Loraditch <MLoraditch at heliontechnologies.com>
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Migration from CUCM/UCXN/UCCX 8.5 to 12.5

I was thinking of the community configuration approach Anthony suggested and was thinking of the debates we’d have if we did that:

  1.  Do you use “_PT”, “PT_”, or just the site name? Same for “CSS”, “LOC”, and the ever-debated “RGN” or “REG”?.
  2.  FQDN or IP addresses?
  3.  Do all the media resources go into a single MRG or not?
  4.  Do we click “Run on all Nodes” for route lists and trunks or not?
  5.  MGCP, SIP, or H323 (if using PRIs)?
  6.  Can UCCX have upper-case hostnames or not?

The debates would take us so long, version 14.0 would be out, and then we’d have to debate about whether a “.0” versoin is stable or not or should we wait for “.5”? Still, could be fun!

From: Anthony Holloway<mailto:avholloway+cisco-voip at gmail.com>
Sent: 28 May 2020 19:15
To: Matthew Loraditch<mailto:MLoraditch at heliontechnologies.com>
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Migration from CUCM/UCXN/UCCX 8.5 to 12.5

Keep in mind that PCD network migrations, while awesome for CUCM, do not work for other products.

Typically with a project like this, you'll likely have a different approach for each app, and not a one size fits all solution.

With the app upgrades, you will also have to change OVA sizes (or want to in some cases), and at that point, it might be better to install fresh, and use tools like COBRAS, BAT, AXL, ADMIN API, stare & compare, etc. to get data exported/imported from old to new.

Or like Kent said, tell yourself it's a toshiba system, and treat it like a greenfield.

On Thu, May 28, 2020 at 11:26 AM Matthew Loraditch <MLoraditch at heliontechnologies.com<mailto:MLoraditch at heliontechnologies.com>> wrote:
Here’s a fun one. We have taken over support of these ancient servers hosted on Esxi 4.1 on UCS-C200-M2s!

Exact Versions are:
8.5 SU2 for CUCM/UCXN
8.5 FCS for UCCX

Each  is a pair of servers.

Have new M5s and flex licensing… need to get to 12.5..  8.5 docs are dead for CUCM/UCXN and 8 and 9 docs are dead for UCCX. ISOs I may need are not available publicly.

Also fun wrinkle the new host are across the WAN and for many logistical reasons are staying there. The migration to the new hosts will have to be via DRS or maybe PCD somehow? Not sure if the bandwidth available to get data across will be fast enough to finish in the allotted time period. My plan was a change freeze window and copy/restore the backups and then activate the new servers and move the subnet to the new location.

As best I can tell I need to get UCCX to SU4 of 8.5.1 then I can go to 10.6 SU3 and then to 12x (with the fun of two CAD upgrades and then a migration to Finesse!)

For CUCM/UCXN I need to go to 8.6 anything and then I can go to 11.5 and then to 12x

I think my plan is to do the upgrades to the interim versions on the old hosts then migrate to the new and then finish the upgrades. The old hosts will need ESXi upgrades to an interim version.

Anyone have thoughts on what they would do here? This is partially depending on TAC being able to provide me the ISOs I will need, but I presume there is an archive.

In theory some sort of PCD migration is also an option, but I’ve never done one and not sure how it could handle the subnet situation that will have to exist.

Welcome to my fun life!

Matthew Loraditch

Sr. Network Engineer

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