Cisco Headend System Release 2.7 Design Guide
Chapter 2 Guidelines for Configuring the DBDS for Multicast and Advanced DSG Mode
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9 If a vendor other than Cisco provides your conditional access system, click the
Disable EMM Generation option to disable Cisco’s PowerKEY EMMs.
Note: When disabling PowerKEY EMMs, all DHCTs that have signed on and
reported the ID for the CMTS bridge will not receive PowerKEY EMMs. In
addition, new EMMs will not be generated for any DHCTs associated with the
CMTS bridge
Note: When disabling PowerKEY EMMs, all DHCTs that have signed on and
reported the ID for the CMTS bridge will not receive PowerKEY EMMs. In
addition, new EMMs will not be generated for any DHCTs associated with the
CMTS bridge
10 Click Save. The Set Up CMTS Bridge window closes and the CMTS bridge is
listed in the QPSK/CMTS List window.
Important! When configuring SFM on the DNCS, a single multicast address is
entered for each logical CMTS bridge. Only one logical CMTS bridge is typically
required for each hub; however, the system operator should carefully take into
consideration the Federal Information Processing Standards (FIPS) code area
when defining bridges. This may result in more than one logical bridge per hub.
The system operator must identify the physical CMTSs that are associated with
each logical bridge.
Important! When configuring SFM on the DNCS, a single multicast address is
entered for each logical CMTS bridge. Only one logical CMTS bridge is typically
required for each hub; however, the system operator should carefully take into
consideration the Federal Information Processing Standards (FIPS) code area
when defining bridges. This may result in more than one logical bridge per hub.
The system operator must identify the physical CMTSs that are associated with
each logical bridge.
11 Do you need to set up another CMTS bridge?
If yes, for each new bridge that you want to add to the DNCS, repeat steps 2
through 10.
through 10.
If no, you have successfully set up all the CMTS bridges for this CMTS
chassis. Select the File menu and click Close to close the QPSK/CMTS List
window.
chassis. Select the File menu and click Close to close the QPSK/CMTS List
window.
CMTS Configuration Overview
Note: Cisco has tested ADSG with a Cisco CMTS; therefore, a Cisco CMTS is
assumed throughout this document.
assumed throughout this document.
After the DNCS is configured with SFM, you will also need to configure ADSG on
the CMTS.
the CMTS.
Each CMTS in the system includes a single DSG agent. The DSG agent is configured
to map all appropriate Cisco out-of-band IP flows onto the appropriate DOCSIS
downstream channels based on the source and destination IP address in the defined
classifiers. The DSG agent is configured to send this data to any MAC address that
the operator deems appropriate.
to map all appropriate Cisco out-of-band IP flows onto the appropriate DOCSIS
downstream channels based on the source and destination IP address in the defined
classifiers. The DSG agent is configured to send this data to any MAC address that
the operator deems appropriate.
Note: The MAC address can be unicast or multicast (Host Extensions for IP
Multicasting, RFC 1112, August 1999).
Multicasting, RFC 1112, August 1999).
The CMTS is configured so that the downstream channel descriptor (DCD) message
sent on each DSG channel that is carrying Cisco out-of-band flows contains
necessary rules and classifiers. These rules and classifiers identify the availability
and location (within that DSG channel) of the out-of-band flows for the Cisco DSG
clients.
sent on each DSG channel that is carrying Cisco out-of-band flows contains
necessary rules and classifiers. These rules and classifiers identify the availability
and location (within that DSG channel) of the out-of-band flows for the Cisco DSG
clients.