Cisco Explorer Series Staging Manual page 38

Chapter 3 Optimize Your System Performance for Downloads and Staging
Turn Off Inband SI
System information (SI) is tuning data sent to CableCARD modules. The default
configuration in the DNCS is to send SI as both inband and out-of-band data. This
configuration is due to the way in which previous versions of DHCT software
operated, and it has not been a requirement in recent years. At this time, we
recommend that sites only send SI out-of-band. This helps stabilize the CableCARD
download environment.
Note: Refer to Recommendation for Setting System Information to Out-of-Band (part
number 738143) for procedures to turn off inband SI.
Configuring a Default Download Image
We recommend having the same image on all of your deployed CableCARD
modules and downloading that same image onto both new and factory repaired
CableCARD modules. This recommendation creates a consistent environment for all
cards in your system.
Using group-based downloads will limit which cards use a particular version of
code. For this reason, if you choose to implement group-based downloads, we
recommend configuring a download that sends the most current CableCARD
software (for example, CableCARD software release 1.1.x) to the default CableCARD
group.
Important: If you are running CableCARD software that precedes software release
1.1 and you are using an OSM download method, do not send any download-related
UN-Config messages to the CableCARD hardware type list. For details, refer to the
Best Practices for Using Multi-Stream CableCARD Modules Operation and Maintenance
Guide (part number 4005658). To obtain a copy of this document, see Related
Publications in the Preface (on page vii).
Sending the most current CableCARD software to the default group achieves the
following results:
Eliminates the need to use CVT groups for CableCARD downloads

Provides a standard release with the most recent version of code on all

CableCARD modules
28 734375 Rev H