Cisco DNCS System Release 2.8.1 3.8.1 4.3.1 User Guide
Define Third-Party Client Filters
Quick Path: DNCS Administrative Console > Application Interface Modules tab > Client Filters
Important: The Client Filters user interface is intended for use by operators with DOCSIS network experience.
If you need more detailed information on Basic DSG, please review the DOCSIS Set-top Gateway (DSG)
Interface Specification, which you can access from the CableLabs website (
If you need more detailed information on Basic DSG, please review the DOCSIS Set-top Gateway (DSG)
Interface Specification, which you can access from the CableLabs website (
).
The Client Filters user interface allows you to control the provisioning of certain DSG client filter settings for
set-tops that use a third-party conditional access (CA) system and operate in Basic DSG mode. A client filter
identifies packet characteristics (such as destination MAC address, destination IP address, and so on) with the ID
of the client needing those packets. In this context, the clients are software running on set-tops operating in
Basic DSG mode.
set-tops that use a third-party conditional access (CA) system and operate in Basic DSG mode. A client filter
identifies packet characteristics (such as destination MAC address, destination IP address, and so on) with the ID
of the client needing those packets. In this context, the clients are software running on set-tops operating in
Basic DSG mode.
Important: Do not define basic DSG client filters to provision standard network flows on a PowerKEY-only
system. Basic DSG filters for PowerKEY systems are already implicit in the Bridge Resolution File (BRF). The
Rules for Client Filters window is provided for cable operators provisioning additional DSG flows, such as
third-party CA systems.
system. Basic DSG filters for PowerKEY systems are already implicit in the Bridge Resolution File (BRF). The
Rules for Client Filters window is provided for cable operators provisioning additional DSG flows, such as
third-party CA systems.
Client Filter Basics
To properly configure client filters through the Client Filters user interface, it is necessary to understand the way
Basic DSG DHCTs are provisioned with DSG information. The system architecture for provisioning DSG
information to Basic Mode DHCTs has the following key features:
Basic DSG DHCTs are provisioned with DSG information. The system architecture for provisioning DSG
information to Basic Mode DHCTs has the following key features:
Each hub has one or more DAVIC QPSK Modulators carrying all OOB information for the hub.
The DNCS publishes a BRF on OOB BFS that provides the mapping of hub ID to DSG Tunnel MAC
address. The BRF provides the information needed by the DHCT to locate the correct DSG OOB Bridge.
This file and its contents are automatically generated by the DNCS when operators set up a CMTS bridge
for multicasting. No user configuration of the contents of this file is available or necessary.
This file and its contents are automatically generated by the DNCS when operators set up a CMTS bridge
for multicasting. No user configuration of the contents of this file is available or necessary.
The DNCS publishes a global default DCD file on OOB BFS. The global default DCD file communicates
rules, classifiers, and DSG Configuration information to DHCTs operating in Basic DSG mode. The rules
and classifiers map DSG Client IDs to packet filter settings used to acquire traffic for those clients. These
filter settings are in addition to the information provided in the BRF and do not affect the DHCT DOCSIS
scan behaviors. The Client Filters user interface provides a way for the operator to configure the rules
and classifiers portion of the global default DCD file.
and classifiers map DSG Client IDs to packet filter settings used to acquire traffic for those clients. These
filter settings are in addition to the information provided in the BRF and do not affect the DHCT DOCSIS
scan behaviors. The Client Filters user interface provides a way for the operator to configure the rules
and classifiers portion of the global default DCD file.
Upon boot, DHCTs operating in Basic DSG mode first find a DAVIC QPSK Modulator to obtain the correct
hub ID and read the BRF before attempting to locate a DSG OOB Bridge.
Once a DHCT has acquired the correct DSG OOB Bridge per the BRF, it uses the client filter information
in the global default DCD file to acquire traffic for applicable Client IDs supported by the DHCT. The
DHCT monitors the DCD file for changes and uses the latest version available.
DHCT monitors the DCD file for changes and uses the latest version available.
Related Topics
Page 749