Cisco Systems uBR7246 manual Supported MIBs and RFCs, Configure the Downstream Cable Interface

Page 6

Configure the Downstream Cable Interface

Install at least one Cisco MC11 cable modem card in the appropriate slot of Cisco uBR7246 chassis. For information about installing the Cisco MC11 cable modem card, refer to the Cisco uBR7246 Universal Broadband Router Cable Modem Card Installation and Configuration document.

Supported MIBs and RFCs

The Cisco uBR7246 universal broadband features support the RF Interface Management

Information Base (MIB). No RFCs are supported by this feature.

Universal Broadband Features Configuration Task List

The Cisco IOS software command-line interface (CLI) is used to configure the Cisco MC11 cable modem card for correct operation on the HFC network. Perform the following tasks to configure the MC11 cable modem card. For some tasks, the default values are adequate to configure the device; these configuration tasks are optional.

Configure the Downstream Cable Interface (Optional)

Configure the Upstream Cable Interface

Configure and Activate Baseline Privacy

Configure and Activate Frequency Agility

Activate IP Address Resolution Protocol (Optional)

Activate Host-to-Host Communication (Proxy ARP) (Optional)

Set Optional IP Parameters (Optional)

Manage Cable Modems on the HFC Network (Optional)

Configure the Downstream Cable Interface

The first step in configuring the MC11 cable modem interface is to configure the downstream cable interface. In this case, downstream refers to the data flow from the Cisco MC11 modem card in a Cisco uBR7246 to the user’s cable modem. Data passing through the MC11 cable modem card is converted to IF and then run through an upconverter to transform the signal to RF. This RF signal is then sent down the line to the user’s cable modem. Downstream cable interface commands configure the frequency, symbol rate, compression, and modulation of the downstream signal.

Perform the following tasks to configure the downstream cable interface:

Set the Downstream Center Frequency

Set the Downstream Symbol Rate

Set the Downstream MPEG Framing Format (Annex A or Annex B)

Set the Downstream Modulation

Set the Downstream Interleave Depth

Activate the Downstream Carrier

VC-138Voice, Video, and Home Applications Configuration Guide

Image 6
Contents Page Topology for uBR7246 Universal Broadband Description of Cisco uBR7246 Cable Router Benefits of Cisco uBR7246List of Terms Prerequisite Tasks Configure the Downstream Cable Interface Supported MIBs and RFCsCommand Purpose Set the Downstream Center FrequencySet the Downstream Symbol Rate Troubleshooting TipsSet the Downstream Mpeg Framing Format Annex a or Annex B Set the Downstream ModulationSet the Downstream Interleave Depth Step Command Purpose Activate the Downstream CarrierConfigure the Upstream Cable Interface Set the Upstream FrequencySet the Upstream Input Power Level Activate Upstream Forward Error Correction Router# more systemrunning-config Activate the Upstream ScramblerActivate the Upstream Ports Configure and Activate Baseline Privacy Configure Kek Encryption Key Privacy Configure Traffic Encryption Key PrivacyConfigure and Activate Frequency Agility Activate Baseline PrivacyCreate Spectrum Groups Activate IP Address Resolution Protocol Configure and Activate Spectrum GroupsActivate Address Resolution Protocol Requests Activate Host-to-Host Communication Proxy ARPSet Optional IP Parameters Activate Proxy ARP RequestsActivate IP Multicast Echo Activate IP Broadcast EchoActivate Cable Modem Authentication Manage Cable Modems on the HFC NetworkActivate Cable Modem Upstream Address Verification Command Task Activate Cable Modem Insertion IntervalUniversal Broadband Features Configuration Example Enter the global configuration mode. configure terminal

uBR7246 specifications

The Cisco uBR7246 is a versatile edge router designed primarily for cable operators wishing to deliver high-speed Internet, telephony, and video services over hybrid fiber-coaxial (HFC) networks. This router is part of Cisco's extensive line of broadband access solutions, addressing the increasing demand for bandwidth among consumers and businesses alike.

One of the uBR7246's main features is its ability to support a wide range of broadband technologies including DOCSIS (Data Over Cable Service Interface Specification) and EuroDOCSIS. The router is designed to facilitate the delivery of high-speed data services while allowing for flexible configurations that adapt to evolving network technologies. This is crucial for operators looking to maximize their network efficiency and future-proof their infrastructure.

The uBR7246 is equipped with multiple modular slots, enabling service providers to customize the router according to their specific needs. High-capacity interface cards can be added to support various types of connections, such as Ethernet and TDM (Time Division Multiplexing), thus offering scalability. With support for both DOCSIS 1.0 and advanced versions like DOCSIS 3.0 and 3.1, the router can handle increased data rates and offer maximum efficiency in terms of bandwidth utilization.

Security features are integral to the uBR7246, as it employs advanced measures such as encryption and robust authentication protocols to ensure that subscriber data remains secure. This is particularly vital in an era where cyber threats are pervasive, and customer trust is essential.

In terms of performance, the uBR7246 offers exceptional throughput, capable of efficiently managing vast amounts of traffic without degradation of service. Advanced Quality of Service (QoS) mechanisms help prioritize traffic, ensuring that high-demand applications like video streaming and VoIP receive the necessary bandwidth they require for optimal performance.

The router is also designed with operational ease in mind, offering centralized management capabilities through Cisco's suite of management tools. This allows operators to monitor performance, manage configurations, and troubleshoot issues more efficiently, reducing downtime and enhancing service reliability.

In summary, the Cisco uBR7246 is a powerful and flexible solution that meets the demands of modern broadband delivery. Its advanced technologies, modular design, high-level security features, and robust performance make it an ideal choice for cable operators aiming to provide high-quality services to their subscribers while staying ahead of the competition.