Cisco Headend System Release 2.5 Guia Do Utilizador
Chapter 9 Monitor DHCTs with the DHCT Status Reporting Utility
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The Reporting Option
The DHCT Status Reporting Utility includes several reports that summarize various
types of DHCT polling data. System operators or support engineers can run the
reports and examine the data in order to assess network conditions of the system.
types of DHCT polling data. System operators or support engineers can run the
reports and examine the data in order to assess network conditions of the system.
This section contains a description of each report offered by the DHCT Status
Reporting Utility, as well as detailed instructions on running the reports.
Reporting Utility, as well as detailed instructions on running the reports.
Description of Reports
DHCT Status Reporting Utility Reports
The DHCT Status Reporting Utility includes the following reports that system
operators can generate to summarize various DHCT polling data:
operators can generate to summarize various DHCT polling data:
Non-responder reports-DHCTs with an IP address that fail to respond to poll
requests from the DNCS are commonly known as non-responders. The utility
generates two types of DHCT non-responder reports:
requests from the DNCS are commonly known as non-responders. The utility
generates two types of DHCT non-responder reports:
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DHCT non-responders identified by QPSK modulator and demodulator
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DHCT non-responders identified by DHCT type and revision
By analyzing the report, system operators can spot trends that may indicate that
a disproportionate share of non-responding DHCTs are associated with a specific
QPSK, or are DHCTs of a specific type or revision.
a disproportionate share of non-responding DHCTs are associated with a specific
QPSK, or are DHCTs of a specific type or revision.
Transmit level report-When a DHCT signs on to the network, the QPSK
modulator informs the DHCT of the signal needed to maintain a communication
link between the DHCT and the modulator. The DHCT Transmit Level
Saturation Report summarizes the transmit levels of DHCTs associated with each
QPSK modulator and demodulator in the system. By analyzing the transmit
levels, system operators can quickly spot when network conditions are
preventing effective communication between the headend and the DHCTs.
modulator informs the DHCT of the signal needed to maintain a communication
link between the DHCT and the modulator. The DHCT Transmit Level
Saturation Report summarizes the transmit levels of DHCTs associated with each
QPSK modulator and demodulator in the system. By analyzing the transmit
levels, system operators can quickly spot when network conditions are
preventing effective communication between the headend and the DHCTs.
Delay value report-When a DHCT signs on to the network, the QPSK modulator
performs a test that evaluates the distance from the DHCT to the modulator.
Based upon this distance, the modulator assigns a "delay value," which indicates
how often a DHCT will check in with the QPSK modulator. The closer the DHCT
is to the modulator, the greater the delay value; the farther the DHCT is from the
modulator, the shorter the delay value.
The DHCT Delay Value Saturation Report summarizes the delay values of
DHCTs associated with each QPSK modulator and demodulator in the system.
By analyzing the delay values, system operators can spot conditions under
which it may be advantageous to configure a QPSK modulator for the QPSK
performs a test that evaluates the distance from the DHCT to the modulator.
Based upon this distance, the modulator assigns a "delay value," which indicates
how often a DHCT will check in with the QPSK modulator. The closer the DHCT
is to the modulator, the greater the delay value; the farther the DHCT is from the
modulator, the shorter the delay value.
The DHCT Delay Value Saturation Report summarizes the delay values of
DHCTs associated with each QPSK modulator and demodulator in the system.
By analyzing the delay values, system operators can spot conditions under
which it may be advantageous to configure a QPSK modulator for the QPSK