Cisco Headend System Release 2.7 Guide De Montage
Chapter 5 SR 5.0 Post Upgrade Procedures
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4042225 Rev A
Reset the Modulators
The SR 5.0 installation updates your modulator code. When you reset the
modulators, the modulators upgrade by downloading these versions of software
from the DNCS. Only reset those modulators that do not already have the latest
version of code.
You have the following methods available when you reset modulators:
modulators, the modulators upgrade by downloading these versions of software
from the DNCS. Only reset those modulators that do not already have the latest
version of code.
You have the following methods available when you reset modulators:
You can use the traditional method of resetting modulators through the DNCS
GUI.
GUI.
You can reset the modulators (except the QAM and QPSK modulators) through
the front panel of the modulators. The QAM modulator resets through the power
switch on the back panel.
the front panel of the modulators. The QAM modulator resets through the power
switch on the back panel.
You can use the auditQam utility to reset the QAM-family of modulators
through the command line of the DNCS.
through the command line of the DNCS.
Important Notice Regarding the Reset of QAM Modulators
On occasion, for testing purposes, default configuration files for headend
components are changed. For example, a site might substitute a file called
mqam250.config, instead of mqam.config, for the MQAM configuration file. If the
site you have upgraded uses a custom configuration file, and if you are now ready to
use the default configuration file again, you need to update the configuration file
settings for your headend equipment.
The following list includes the default configuration files for the QAM-family of
devices:
components are changed. For example, a site might substitute a file called
mqam250.config, instead of mqam.config, for the MQAM configuration file. If the
site you have upgraded uses a custom configuration file, and if you are now ready to
use the default configuration file again, you need to update the configuration file
settings for your headend equipment.
The following list includes the default configuration files for the QAM-family of
devices:
QAM — /tftpboot/qam.config
GQAM — /tftpboot/gqam.config
GOQAM — /tftpboot/goqam.config
MQAM — /tftpboot/mqam.config
CAQAM — /tftpboot/caqam.config
CAUTION:
Failure to update the configuration file(s) will result in the device remaining
in the uniquely specified configuration. The device will not load new code.
Instead, it will continue to load the code specified in the custom configuration
file.
Failure to update the configuration file(s) will result in the device remaining
in the uniquely specified configuration. The device will not load new code.
Instead, it will continue to load the code specified in the custom configuration
file.
If the headend device fails to load the code you intended it to receive, check to see if
either a unique file was specified in the DNCS GUI or in the /etc/bootptab file
before contacting Cisco Services for assistance.
either a unique file was specified in the DNCS GUI or in the /etc/bootptab file
before contacting Cisco Services for assistance.