Installation & Operation Manual 826 Document # LTRT-92224
Mediant 8000
46.4.5 Upgrading the Media Gateway Boards
The Media Gateway boards are upgraded one after another starting from the lowest
slot number. Redundant boards are last to be upgraded.
The affect on the active calls that are handled by the specific Media Gateway board
depends on the upgrade mechanism – Hitless Upgrade or Graceful Shutdown. For
more information, see Section 'Online Software Upgrade-Overview' on page 811 and
'Starting the Online Software Upgrade Wizard' on page 820.
Depending on the options you chose in the Welcome Questionnaire (see 'Welcome
Questionnaire' on page 821) the upgrade process may pause after upgrading the first
or every Media Gateway board. If you choose to do so, you may perform some tests
to verify that the upgrade of a specific Media Gateway board succeeded prior to
continuing with the next board.
Note : Media Gateway boards in a locked state are skipped by the Online Software
Upgrade Wizard. They will be automatically loaded with a new software version as
soon as they are unlocked (even after the Upgrade Wizard is no longer running).
46.4.6 Upgrading the ES Boards
The Ethernet Switch boards are upgraded one after another starting from the standby
ES board (the ES board that functions as a standby board when the Online Software
Upgrade is started).
After the "ES Board Upgrade" stage is completed, it is recommended to perform basic
tests to verify that the new software version, that is currently applied to all boards,
except the 1
st
SC board (which was initially Active, however is currently Standby),
functions correctly. After completing these tests decide whether to proceed with the
Upgrade or to Rollback to the previous software configuration.
46.4.7 Upgrading the 1
st
SC Board
Finally the 1
st
SC board (initially Active, however currently Standby) is upgraded to the
new version. The upgrade may take considerable time if OS patches need to be
installed on the SC board and the board is of the SC Rev.1 hardware type (using the
Solaris OS). Use the same workaround as described in "'Upgrading the 2
nd
SC Board'
on page 824 to minimize this time.
When upgrade of the 1
st
SC board is completed, SC activity switchover is performed
to return the system to its initial configuration – i.e. the 1
st
SC board is Active and 2
nd
SC board is Standby.
46.4.8 Finish
Click Finish to close the Software Upgrade Wizard.
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