Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 User Guide
Reset the QPSK Modulator Persistent Database
Quick Path: DNCS Administrative Console > DNCS tab > Network Element Provisioning tab >
QPSK/CMTS > File > Reset and Clear DB
QPSK/CMTS > File > Reset and Clear DB
Why Reset QPSK Modulator Persistent Database?
Under normal circumstances, persistent database records should not be cleared. Clearing these causes DHCTs
to disconnect from the QPSK modulator. Until the DHCTs sign back on, a process that may take hours,
subscribers will be unable to use interactive services, such as VOD.
to disconnect from the QPSK modulator. Until the DHCTs sign back on, a process that may take hours,
subscribers will be unable to use interactive services, such as VOD.
There are, however, some situations when it is necessary to clear and reset the QPSK the database, for
example, if you need to reallocate the IP addresses of DHCTs. In other situations, it can be helpful to clear and
reset the QPSK database, for example, when moving some DHCTs from one QPSK modulator to another. This
page describes how to use the Reset and Clear DB selection on the QPSK File menu to reset and clear the
QPSK persistent database.
example, if you need to reallocate the IP addresses of DHCTs. In other situations, it can be helpful to clear and
reset the QPSK database, for example, when moving some DHCTs from one QPSK modulator to another. This
page describes how to use the Reset and Clear DB selection on the QPSK File menu to reset and clear the
QPSK persistent database.
Selecting this menu option clears the persistent database records for all associated DHCT IP addresses. All
package and billing information remains intact and the persistent database function is maintained for future
QPSK modulator resets.
package and billing information remains intact and the persistent database function is maintained for future
QPSK modulator resets.
You Need to Know
During this process no DHCTs for the QPSK modulator are rebooted. As a result, you can perform this
procedure at any time. However, interactive services will be unavailable to subscribers until the DHCTs on the
corresponding QPSK sign back on, a process that can take from a few minutes to a few hours, depending on
several factors. For this reason, you may prefer to clear the database records during a maintenance period.
procedure at any time. However, interactive services will be unavailable to subscribers until the DHCTs on the
corresponding QPSK sign back on, a process that can take from a few minutes to a few hours, depending on
several factors. For this reason, you may prefer to clear the database records during a maintenance period.
Resetting the QPSK Modulator Persistent Database
Follow this procedure to clear the persistent database records for all associated DHCT IP addresses.
1.
Make sure that you are aware of how resetting database records can impact system performance.
1.
On the DNCS Administrative Console, click the DNCS tab.
1.
Click the Network Element Provisioning tab.
1.
Click QPSK/CMTS. The QPSK/CMTS List window opens.
1.
Select the QPSK modulator that you want to reset.
1.
Click File > Reset and Clear DB. A confirmation window displays prompting you to confirm that you
want to reset the QPSK modulator, associated demodulator, and clear the status of all DHCTs that the
modulator feeds.
modulator feeds.
1.
Click Yes. The persistent database records for this QPSK modulator are cleared and the persistent
database function for future QPSK modulator resets is maintained.
1.
Do you have additional modulators to reset?
If yes, repeat this procedure from step 4 as many times as is necessary to reset additional
modulators.
If no, go to step 9.
1.
Click File > Close to close the QPSK/CMTS List window.
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