Cisco Headend System Release 2.7 デザインガイド
Chapter 2 Elements of the SDV System
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SDV System Diagram with Optional USRM
The following system diagram shows the major hardware components that are used
in an SDV system that uses the D9510 USRM.
in an SDV system that uses the D9510 USRM.
Note: If you are using the Regional Control System (RCS) option, this configuration
will differ from the diagram shown above. See SDV System with USRM in an RCS
Environment (on page 14) for more information.
will differ from the diagram shown above. See SDV System with USRM in an RCS
Environment (on page 14) for more information.
DNCS with SDV Manager and SRM
The DNCS serves as the overall session and resource manager for SDV as well as
multiple applications. A number of software upgrades and new software elements
have been added to the DNCS.
multiple applications. A number of software upgrades and new software elements
have been added to the DNCS.
Note: For more information about the DNCS software upgrades, see Software
Components of an SDV System (on page 15).
Components of an SDV System (on page 15).
Classic SDV Server
Our classic SDV server provides the switching control element for the SDV system.
The server is designed to provide high-speed channel change services to mask the
impact of switching. The server is also designed for the high availability using an
N:1 redundant configuration, if desired.
The server is designed to provide high-speed channel change services to mask the
impact of switching. The server is also designed for the high availability using an
N:1 redundant configuration, if desired.
The architecture provides scaling and reliability using multiple servers to share the
load, as well as backup units to allow for seamless upgrades in the unlikely event
that one of the primary servers fails.
load, as well as backup units to allow for seamless upgrades in the unlikely event
that one of the primary servers fails.