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

Mon Dec 4 13:01:46 EST 2006

FYI, Nodes (servers) in a cluster are licensed entities... see attached.

-- Fred Nielsen

  _____  

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Johnson, Ken
Sent: Monday, December 04, 2006 8:55 AM
To: Jonathan Charles; Nick Kassel
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] CCM 4.1(3) to 5.04 Migrations

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
_________________________________
 E-mail: kenjohnson at letu.edu
 Helpdesk: (903) 233-3500
 Phone: (903) 233-3520
 Web:  <blocked::http://www.letu.edu/infotech/>
http://www.letu.edu/infotech/

  _____  

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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