Configure and Activate Frequency Agility

Note The cable interface will not operate until you either create and configure a spectrum group or set a fixed upstream frequency. From the interface configuration prompt, an interface is assigned membership in a spectrum group. From the interface point of view, the spectrum group also represents the set of upstreams connected to the same group of fiber nodes. This allows the spectrum manager to know if upstream frequencies need to be managed together.

The configuration and activation of frequency agility depends on each cable operator’s physical plant.

To configure and activate frequency agility, perform the following tasks:

Create Spectrum Groups

Configure and Activate Spectrum Groups

Create Spectrum Groups

To create spectrum groups, use the following commands in global configuration mode:

Step

Command

Purpose

1

cable spectrum-group group-numbertype blind

Create a blind spectrum group.

2cable spectrum-group group-numbertype scheduled daily

Create a scheduled spectrum group that can change its frequency and power level at the same time every day.

3cable spectrum-group group-numbertype scheduled periodic-sec seconds

Create a scheduled spectrum group that can change its frequency and power level at a specified interval in seconds.

Validation Tips

To verify that a spectrum group has been created, enter the show cable spectrum-groupcommand:

router# show cable spectrum-group

spectrum-group 1 spectrum-group 2 spectrum-group 3

Troubleshooting Tips

If you are having trouble, make sure you have entered a valid spectrum group number and type.

VC-152Voice, Video, and Home Applications Configuration Guide

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Cisco Systems uBR7246 manual Create Spectrum Groups

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.