Downstream Channel Id Configuration; Downstream Frequency Override; Dynamic Channel Change (Dcc) For Loadbalancing - Cisco uBR10012 Software Configuration Manual

Supported Software Features for the Cisco uBR10012 Router
For additional DSG 1.2 information, refer to the following documents on Cisco.com:
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Downstream Channel ID Configuration

This operational feature allows all cable interfaces on the HFC network to identify themselves using
unique downstream channel IDs, instead of their downstream frequencies. CMs communicate their
downstream ID when making a connection, not their downstream frequency. System administrators can
enter a configurable downstream channel ID to a value other than the default. Thus, each downstream
channel ID can be unique on a cable network. For configuration information, refer to
Downstream Channel ID" section on page

Downstream Frequency Override

The Cisco uBR10012 router is able to change the downstream frequency for any or all CMs, overriding the
DOCSIS configuration file settings. For DOCSIS QoS configuration information, refer to the feature module
titled
Downstream Load Balancing Distribution with Upstream Load Balancing
Cisco IOS Release 12.3(17b)BC4 introduces further enhancements to downstream load balancing, resulting
in equalized upstream load balancing group members. This enhancement synchronizes the pending statistic
between different cable interface line cards in the load balancing group.
This enhancement performs downstream load balancing that accounts for loads on upstream channels in the
same upstream load balancing group, rather than on the basis of the entire downstream channel load. Prior
Cisco IOS releases may not have distributed cable modems evenly over individual upstream channels, nor in
a way that accounted for downstream and upstream segment loads that account for one another.
This enhancement applies when downstream load balancing occurs on a headend system with separate
upstream load balancing segments; the upstream segments are spread over multiple downstreams segments.
This enhancement provides an alternative downstream load balancing scheme that accounts and makes use of
per-upstream loads rather than total downstream loads.
For additional information about Load Balancing on the Cisco CMTS, refer to the following documents on
Cisco.com:
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Dynamic Channel Change (DCC) for Loadbalancing

Cisco IOS Release 12.3(17a)BC introduces Dynamic Channel Change (DCC) and DCC for Load
Balancing on the Cisco CMTS.
DCC in DOCSIS 1.1 dynamically changes cable modem upstream or downstream channels without
forcing a cable modem to go offline, and without re-registration after the change. DCC supports four
different initializations, instead of one, as in earlier DOCSIS support.
Cisco uBR10012 Universal Broadband Router Software Configuration Guide
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Advanced-mode DOCSIS Set-Top Gateway 1.2 for the Cisco CMTS
http://www.cisco.com/en/US/docs/cable/cmts/feature/ubrdsg12.html
Cisco CMTS Universal Broadband Router MIB Specifications Guide
http://www.cisco.com/en/US/docs/cable/cmts/mib/reference/guide/mibv5ubr.html
DOCSIS 1.1 for Cisco uBR7200 Series Universal Broadband Routers
Load Balancing and Dynamic Channel Change on the Cisco CMTS
http://www.cisco.com/en/US/docs/cable/cmts/troubleshooting_batch9/cmtslbg.html
Cisco CMTS IOS Cable Command Reference Guide
http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html
Chapter 1 Overview of Cisco uBR10012 Universal Broadband Router Software
3-6.
"Assigning the
on Cisco.com.
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