Cisco Model D-PCG1000 PowerKEY CAS Gateway Installation Guide
Upgrade Process Overview
4026030 Rev B
3
Subscriber Impact
When QAMs are reset (rebooted) during the upgrade, the services they carry are
temporarily interrupted. DHCTs will show a frozen picture or black screen until the
upgrade is complete and the DNCS has restored all active sessions on the QAM.
temporarily interrupted. DHCTs will show a frozen picture or black screen until the
upgrade is complete and the DNCS has restored all active sessions on the QAM.
The Impact of TVs with QAM Tuners
When upgrading QAMs to new releases of software, you must reset the QAMs in
order for the devices to download the new software from the DNCS.
order for the devices to download the new software from the DNCS.
An increasing number of TVs are being manufactured and sold with QAM tuners
that can access services that are not properly encrypted. Therefore, as a part of the
upgrade process, we encourage you to verify that the DNCS re-establishes
encryption for all secure services on the modulators that receive sessions from
upgraded QAM devices. This extra step ensures that no modulator that may be
carrying content inappropriate for children can be viewed inadvertently when using
a TV that is equipped with a QAM tuner.
that can access services that are not properly encrypted. Therefore, as a part of the
upgrade process, we encourage you to verify that the DNCS re-establishes
encryption for all secure services on the modulators that receive sessions from
upgraded QAM devices. This extra step ensures that no modulator that may be
carrying content inappropriate for children can be viewed inadvertently when using
a TV that is equipped with a QAM tuner.
Process Overview
This section provides an overview of the software upgrade process.
Important: You should only upgrade to new releases of software if your network is
running in a healthy state (for example, a system can boot and stage set-tops). If your
network is not in a healthy state, you should not upgrade to the new release of
software unless the new release contains a remedy to your system issue.
running in a healthy state (for example, a system can boot and stage set-tops). If your
network is not in a healthy state, you should not upgrade to the new release of
software unless the new release contains a remedy to your system issue.
CAUTION:
If you are upgrading more than one QAM, download the new software to
one group of devices (for example, all of the devices in a single rack or hub)
and verify the functionality before attempting to download the software to
another group of devices. Verifying the functionality of one group of
devices at a time enables you to better isolate any failures that may occur
and enables you to minimize service interruptions.
If you are upgrading more than one QAM, download the new software to
one group of devices (for example, all of the devices in a single rack or hub)
and verify the functionality before attempting to download the software to
another group of devices. Verifying the functionality of one group of
devices at a time enables you to better isolate any failures that may occur
and enables you to minimize service interruptions.
Pre-Upgrade Tasks
Important: Performing the pre-upgrade tasks will not impact system performance.
1 Verify that the install tool (install_pkg) exists on the DNCS.
1 Verify that the install tool (install_pkg) exists on the DNCS.
Note: For procedures on how to check for the install_pkg tool, see Verify the
Install Package Exists on the DNCS (on page 25).
Install Package Exists on the DNCS (on page 25).
2 Determine the configuration (config) files currently in use on your system.
3 Verify the software version associated with the configuration files.
4 Make a backup copy of the current QAM configuration file.
3 Verify the software version associated with the configuration files.
4 Make a backup copy of the current QAM configuration file.