[cisco-voip] CCM 4.1(3) to 5.04 Migrations

Mon Dec 4 11:55:25 EST 2006

Along these lines, We're considering an upgrade to the 5.x train from
our 4.1(3) installation mainly for SIP endpoint support. (I am assuming
there is nothing in the 4.3 or later trains that will have that - but
I've not seen the EFT docs. Our question is - is there any documented
way - (however complex) to manually obtain licenses for devices (with
documented Purchase Orders, etc) that aren't on the callmanager when the
upgrade process is performed?

Mainly because we keep around 30 physical devices and 10-15 purchase IP
Communicator licenses in inventory for chargeouts at any given time and
I'm hoping we won't have to set all those up on the CM just to convert
the licenses - but I'm assuming we will - can anyone confirm?

Also - we have taken two of our six CallManager licenses and used them
(for whatever reasons) as a lab for some time - I suppose we could have
just used non-licensed servers but at the time I wasn't sure if labs
were exempt from licensing requirements. Will we need to move those back
to the cluster in order for the server licenses to be converted or does
the 5.x licensing only cover endpoints?

Ken Johnson
   Mgr. Network Services,
   Information Technology
   LeTourneau University
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From: Jonathan Charles [mailto:jonvoip at gmail.com] 
Sent: Friday, November 24, 2006 10:52 AM
To: Nick Kassel
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CCM 4.1(3) to 5.04 Migrations

You are going to run into some serious problems.

Not that the idea isn't sound, I am just concerned about your DHCP scope
and how you are going to get chunks of phones to register to the new
cluster and the old with the same DHCP Option 150 address (you could
manually change the tftp on the phones, but that seems time
consuming)... Also, you run the risk of having a discontiguous dial-plan
(where 12XX are on the old cluster, yet 123X are on the new, etc.). 

You will also run into licensing issues (if you use DMA, you can get a
license automatically for free, if you don't, you have to buy one...)

Just stuff you want to keep in mind.

What I might suggest instead is to drop in a second server, install
5.0(4) using the DMA (so the old database is fully migrated). And then
slowly move phones over (chunk by chunk in their original DHCP scope
(just change opt 150 and reboot the phone). If it fails (for whatever
reason), change the DHCP back and reboot them again. 

If you have MGCP gateways, it won't be simple to get them to change back
if the system catastrophically fails, but it will be better than
attempting an onbox upgrade.

Jonathan

On 11/24/06, Nick Kassel <Nick.Kassel at charles-stanley.co.uk> wrote: 

	When migrating from a 4.1(3) cluster to 5.04, is it possible to
do this in a staged way, Ideally we would like to install a cluster of
version 5 servers with an ICT between the 2 clusters and slowly migrate
users across, stage by stage. E.g. one remote site at a time. Hopefully
causing us less issues.

	But what I seem to have read suggests running the DMA and then
copying all the license files for the phones in one go to the new
cluster, if I do this can I still run the 2 clusters together.  If not
there must be another way to do this as I can't believe that you have to
migrate across all or nothing at all.

	Has anyone done anything similar or can point me in the
direction of any further info regarding migrations.

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