[cisco-voip] Firmware Update

[Wes Sisk]

Hi Darren,

You will need to be bit more explicit here.

Most "OS Updates" on the appliance (cm5.x and later) come in the form of 
".cop.sgn" files. These files patch the current active partition and do 
not involve the inactive partition.

If you upgrade to a Mainline version (6.1 to 7.0), upgrade to a 
maintenance release (7.0.1 to 7.0.2), upgrade to a service update (7.0.1 
to 7.0.1.11002-4 or "SU1a") or upgrade to an engineering special 
(7.0.2.20000-5 or "7.0(2a)" to 7.0.2.21010-2) then then upgrade will 
install to the inactive partition, migrate your data, and require reboot 
to switch partitions.  If this is completed in proper order (publisher, 
tftp, backup subscribers, active subscribers) then phones *should* 
attempt to upgrade automatically.  This may fail if:
1. cm6.x or later and replication to TFTP server is still in progress 
when phones reboot
2. tftp server is still rebuilding configuration files when phones reboot
3. some phones will fail if tftp processing allocation is exceeed.  this 
is likely to happen with large numbers of phones (2000+ attempting 
concurrent upgrade) or if phones are across a WAN from CUCM.  WAN causes 
the TFTP process to take much longer. This in turn keeps TFTP threads 
tied up for extended periods of time.  The phone peer to peer firmware 
sharing feature is intended to counter this process.  Using "load 
server" on the phone configuration page can also counter this.

There are perfmon counters in RTMT for Cisco TFTP to identify these 
conditions.

If a failure does occur most admins have the best success with reseting 
phones one device pool at a time to allow phones to upgrade.  This is 
assuming your phones are divided into device pools of less than ~1000 
phones each.

Regards,
Wes

On Tuesday, May 26, 2009 2:23:45 PM, Darren Ducote <ducotedt at stfran.com> 
wrote:
>
> When I install an OS/Engineering update and reboot to the inactive 
> partition, do the phones try and download the new firmware after the 
> swing back over to the subscriber or do I have to manually update that 
> for each device?
>
>  
>
> In other words I am worried that all the phones will try to do a TFTP 
> firmware update after installing the updated OS. Thanks!
>
>
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