The primary reason for a cluster reboot after a device package install is to 
refresh the RIS Data Collector, TFTP, Tomacat, A Cisco DB (and one other ... I 
think) services; which is needed when the device package includes the 
installation of device model support not previously supported. If the device 
package does not include additional model support not previously supported; 
it's usually not much more than a collection of firmware that would just 
require a TFTP refresh in the cluster (although, either way, it does update the 
default load values under Device->Device Settings->Device Defaults).


If you are not prepared to push the new loads to all devices; I suggest a BAT 
export of the Device Defaults BEFORE installing the device pack and then a BAT 
import of the same Device Defaults export AFTER the device pack is installed, 
BUT, before any cluster reboots or TFTP service refreshes (you can always 
record or BAT export the references of all the new loads after you install the 
device pack but before you restore them to the previous values).


The device package, cmterm-devicepack10.5.2.14082-1.cop.sgn adds device support 
for the Cisco Wireless IP Phone 8821 
(http://www.cisco.com/web/software/282074299/134616/cmterm-devicepack10.5.2_14082-1_Release_Notes.pdf).
 When you install the device package, any changes to Informix for the new model 
support are made during the device package is installation; the cluster restart 
is to ensure all required service refreshes are complete cluster-wide.


In theory (I say theory because I simply have never attempted this), you could 
complete the device pack install (on all cluster nodes) and then install 
10.5(2)SU3a on the cluster nodes and do a single reboot. However, in full 
disclosure, I have never tried it that way .... the logic is sound though and I 
have every reason to think it would work fine.


Personally, I am averse to doing anything that I think is even remotely risky 
in a production environment without testing. If this were my deal (and I had 
the extra time); I'd spin something up in a lab and just 'try it' first to see 
if anything blows up.  Using dCloud may be an option too if you have a really 
good connection (uploading the uc update and device package files could prove 
cumbersome otherwise).


Beyond that, never fail alone ... get a TAC case open; if TAC says it will work 
... GREAT, if something does go wonky you have recourse. If TAC says no ... 
there is your answer AND, it gives you business justification for needing two 
(2) separate cluster reboots.


Thanks,


= Ryan =


________________________________
From: cisco-voip <cisco-voip-boun...@puck.nether.net> on behalf of Jorge L. 
Rodriguez Aguila <jorge.rodrig...@netxar.com>
Sent: Sunday, August 28, 2016 9:35 AM
To: Cisco-Voip
Subject: [cisco-voip] CUCM Cluster SU install + device Package

We are going to be performing an update to the latest SU on a CUCM 10.5 cluster 
soon. The latest Patch was released on Jun 2016 while the latest device package 
is from August. My main question is, Can I run the Device Package Installer, 
not reboot the cluster, perform update and do the switch version? Will I have 
do do them separately? I'm trying to avoid having to do two cluster reboots 
since this is a 24/7 Operation and we scheduled a six hour window for the 
upgrade on a 5 CUCM/ 2 CUC Cluster




Jorge Rodriguez, CCNP, CCNP-V
Senior Voice/Data Network Consultant
Netxar Technologies, a Digicel Company
Cel 7876888530
Office 7877650058
jorge.rodrig...@netxar.com<mailto:jorge.rodrig...@netxar.com>




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