Nortel Networks NN10265-111 - Manual (Page 20)

NN10265-111 MCS 5100 3.5 Standard 4.0 January 2006
20 Copyright © Nortel Networks Limited 2006
active media sessions present. When this occurs, it is safe to proceed
with the upgrade without affecting service.
If an upgrade fails during the initial stages, a rollback to the previous
load is performed. A notification of the failure appears within the System
Management Console.
If a component upgrade fails after the initial stages of the upgrade, it
does not rollback automatically. A dialog box appears in the
Management Console stating that the upgrade failed and prompts the
administrator to determine whether a rollback should be performed.
Upgrade commands may require several minutes to complete
execution and will initiate a reboot of the RTP Media Portal. The length
of the reboot is approximately 2-3 minutes. Due to reduced capacity,
perform updates during low traffic periods.
Maintenance update tasks
For maintenance updates, administrators may decide to either upgrade
the RTP Media Portal component to the latest maintenance release, or
downgrade the RTP Media Portal component to a previous
maintenance release.
To upgrade or downgrade the RTP Media Portal, the update operation
is issued to the RTP Media Portal from the System Management
Console. This operation will reboot the host card, which in turn reboots
all Media Blades. When the RTP Media Portal recovers from this
operation, it is in service (UNLOCKED) with the updated software.
To avoid any conflicts with service requests from the SIP Application
Module(s), the following procedure describes the steps that must be
CAUTION
It is possible to update and reboot one RTP Media
Portal in a chassis, while the RTP Media Portal in the
other half of the chassis continues to run the previous
software. Once one RTP Media Portal is updated, the
other RTP Media Portal in the chassis can be
shutdown, locked, updated, and rebooted. This
rolling upgrade will only impact available capacity and
will not cause a service outage.
Updating all RTP Media Portals concurrently will
cause a service outage.