Table Of Contents
Solution Description and Scope
Cisco, Linksys, and Scientific Atlanta Equipment
Solution Overview
This chapter provides an overview of the Cisco Cable Wideband Solution, Release 1.0, and contains the following major topics:
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Solution Description and Scope
In this document, the terms wideband channel, bonded channel, and bonding group have the same meaning: a logical grouping of one or more physical radio frequency (RF) channels over which MPEG-TS packets are carried.
Solution Description and Scope
Cisco IOS Release 12.3(21)BC and 12.3(21a)BC3 support the DOCSIS 3.0 Downstream Channel Bonding feature, which is the key feature of the Cisco Cable Wideband Solution, Release 1.0.
In the Cisco Cable Wideband Solution, Release 1.0, the DOCSIS 3.0 Downstream Channel Bonding feature supports downstream wideband channels consisting of multiple bonded RF channels. The solution provides wideband data services over existing hybrid fiber coax (HFC) networks. With wideband data services, multiple RF channels are aggregated into a single logical wideband channel (bonding group) that delivers higher bandwidth to the wideband cable modem than was previously possible with DOCSIS 2.0 technology. This aggregation of RF channels is referred to as "channel bonding."
The maximum bandwidth supported depends on the number of RF channels that can be aggregated into a wideband channel. For example:
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The Cisco Cable Wideband Solution, Release 1.0, can be deployed in parallel with DOCSIS 1.X/2.0 technology. The CMTS supports DOCSIS 1.X/ 2.0 modems on non-wideband ports while wideband cable modems deliver higher-speed throughput on the wideband ports.
Architecture and Scope
Figure 1-1 presents a simplified view of the Cisco Cable Wideband Solution, Release 1.0. In Figure 1-1, two RF channels are bonded into a wideband channel (bonding group). The Cisco Cable Wideband Solution includes these major components:
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Figure 1-1 Cisco Wideband Cable System
In Scope
The scope of the Cisco Cable Wideband Solution, Release 1.0, comprises fully tested and supported Cisco and Scientific Atlanta components, as well as selected third-party components tested for interoperability by Cisco. The following aspects of the solution are in scope:
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Device configuration that is in scope for this document is limited to the Wideband SIP and Wideband SPA. Comprehensive documentation for other CMTS components is provided in the existing Cisco uBR10012 documentation set, which is accessible at www.cisco.com.
For information on edge QAM device installation and software configuration, refer to the vendor's edge QAM device documentation.
Out of Scope
The Cisco Cable Wideband Solution-related information in this document pertains to the components listed in "In Scope" section above. Not included in the scope of the Cisco Cable Wideband Solution are the hardware and software components that make up the remainder of the cable data network.
For the Cisco Cable Wideband Solution, Release 1.0, cable network management tools and operations support system (OSS) facilities for wideband cable are outside the scope of the solution.
Solution Key Features
The Cisco Cable Wideband Solution, Release 1.0, provides the following key features:
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Solution Components
Cisco Cable Wideband Solution, Release 1.0, consists of Cisco, Linksys, and Scientific Atlanta components that are tested, documented, and fully supported by Cisco, Linksys, or Scientific Atlanta. Also, third-party equipment, although not fully supported by Cisco, has been selected and tested for interoperability with the solution components.
Cisco, Linksys, and Scientific Atlanta Equipment
For the Cisco Cable Wideband Solution, Release 1.0, the following Cisco, Linksys, and Scientific Atlanta equipment have been tested in the context of the solution.
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Third-Party Equipment
For the Cisco Cable Wideband Solution, Release 1.0, Table 1-1 lists the third-party component, vendor, and the basic functionality each component provides.
