Version 6.6 825 October 2014
Installation & Operation Manual 46. Online Software Upgrade
When you upgrade between major software versions, a large number of OS patches
are installed on the SC boards during the "SC board upgrade" stage. These OS
patches provide better security and overall system stability. For SC Rev.1 boards
(using the Solaris OS), the OS patches installation may take up to 1 hour to complete
on each SC board. No user interaction is required. For SC Rev.2 boards (using the
Linux OS), the OS patches installation typically takes less than 5 minutes.
For subsequent minor upgrades (between maintenance releases), the "SC board
upgrade" phase is considerably faster because all required OS patches are already
installed.
Note: An upgrade between major software versions on a chassis that uses SC
Rev.1 boards (using the Solaris OS) may take more than 3 hours due to the OS
patches installation. Plan your upgrade maintenance time period accordingly or
pre-install OS patches as described in 'Pre-installing OS Patches' on page 817.
After the 2
nd
SC board is upgraded, you can open the EMS and inspect the new Media
Gateway configuration and the status of the Media Gateways components. The
following statuses should be displayed at this stage of the upgrade; they do not
indicate any malfunction:
The Media Gateway is marked as "Upgrade In Progress".
1
st
SC board (initially Active) is marked as failed (Unlocked/Disabled).
2
nd
SC board (initially Standby) is marked as Active (Unlocked/Enabled).
Both ES boards are marked as failed (Unlocked/Disabled).
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