Cisco DNCS System Release 2.8 3.8 4.3 Guía De Instalación
Chapter 1 Upgrading the QPSK Software
2
4031324 Rev B
The Upgrade Process
Introduction
This section provides a timeline for each stage of the QPSK software upgrade and
installation process. Read this section carefully; some of these procedures are not
addressed in system release installation instructions.
installation process. Read this section carefully; some of these procedures are not
addressed in system release installation instructions.
Is Service Impacted During the Upgrade?
The service impact to subscribers will vary based on the applications installed on
your system and how the applications react to a loss of both the forward and reverse
QPSK data paths. For a subscriber not actively using an interactive application, the
outage will most likely go unnoticed.
your system and how the applications react to a loss of both the forward and reverse
QPSK data paths. For a subscriber not actively using an interactive application, the
outage will most likely go unnoticed.
When the QPSK starts to load new software, all of the DHCTs will lose IP
connectivity and the two-way mode. Depending on the system, these DHCTs may
take a few minutes to several hours to reconnect. The DHCTs will be unable to use
interactive services until they receive a new IP address.
connectivity and the two-way mode. Depending on the system, these DHCTs may
take a few minutes to several hours to reconnect. The DHCTs will be unable to use
interactive services until they receive a new IP address.
Taking Advantage of the VLSM Feature
To take advantage of variable-length subnet masks (VLSM), you must have
SR 2.x/3.x/4.x or later installed. SR 2.x/3.x/4.x and later utilize the Solaris 8 or later
operating system (OS) that includes full support for VLSM. To optimize network
configuration and to take advantage of VLSM network technology, we recommend
that you modify all applicable network configuration files on both the Digital
Network Control System (DNCS) and the Application Server when upgrading to SR
2.x/3.x/4.x or later.
SR 2.x/3.x/4.x or later installed. SR 2.x/3.x/4.x and later utilize the Solaris 8 or later
operating system (OS) that includes full support for VLSM. To optimize network
configuration and to take advantage of VLSM network technology, we recommend
that you modify all applicable network configuration files on both the Digital
Network Control System (DNCS) and the Application Server when upgrading to SR
2.x/3.x/4.x or later.
How Much Time is Required to Install the New QPSK Software?
The initial monitoring of the system and installing the QPSK software requires
approximately 2 hours. When installation is complete, continue to monitor the
DHCT sign-on traffic for several hours. The following table provides a description
and approximate time required for each stage of the QPSK upgrade and installation
process.
approximately 2 hours. When installation is complete, continue to monitor the
DHCT sign-on traffic for several hours. The following table provides a description
and approximate time required for each stage of the QPSK upgrade and installation
process.
Stage Description
Time Required Refer to
1
Monitor the available DNCS disk space.
If the percentage of used disk space
exceeds 80 percent, the DNCS is at risk
of becoming full, which would cause the
DNCS to stop abruptly.
If the percentage of used disk space
exceeds 80 percent, the DNCS is at risk
of becoming full, which would cause the
DNCS to stop abruptly.
5 minutes
Monitor the DNCS Disk
Space (on page 6)
Space (on page 6)