1-68
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-05
Chapter 1 Overview of Cisco uBR7200 Series Software
Supported Software Features for the Cisco uBR7200 Series
• Supports a minislot size of 1 tick for A-TDMA operations.
• Increases channel widths to 6.4 MHz (5.12 Msymbol rate).
For additional information on DOCSIS 2.0 A-TDMA Support on the Cisco uBR-MC16U/X card, refer
to the section, "DOCSIS 2.0 A-TDMA Support" in Configuring the Cisco uBR-MC16U/MC16X Cable
Interface Line Card on Cisco.com:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/line_cards/ubr16u_x/configuration/gu
ide/mc16uxfm.html#wp1153687
For additional information on DOCSIS 2.0 A-TDMA Support on the Cisco uBR-MC28U/X card, refer
to the section, "DOCSIS 2.0 A-TDMA Support" in Configuring the Cisco uBR-MC28U/MC28X Cable
Interface Line Card on Cisco.com:
http://www.cisco.com/en/US/docs/interfaces_modules/cable/line_cards/ubr28u_x/configuration/gu
ide/mc28uxfm.html#wp1153687
High Availability Features
Several powerful High Availability features are supported on the Cisco uBR7200 series:
• Cisco DDC (Dual DOCSIS Channel), page 1-68
• DRP Server Agent, page 1-69
• DSX Messages and Synchronized PHS Information, page 1-69
• Globally Configured HCCP 4+1 Redundancy on the Cisco uBR7246VXR Router, page 1-69
• HCCP Support for the Cisco uBR-MC16S Cable Interface Line Card, page 1-70
• HCCP N+1 Redundancy, page 1-70
• High Availability Features in Cisco IOS Release 12.3(13a)BC, page 1-71
• High Availability Support for Encrypted IP Multicast, page 1-71
• Hot-Standby 1+1 Redundancy, page 1-71
• IF Muting for HCCP N+1 Redundancy, page 1-72
Cisco DDC (Dual DOCSIS Channel)
The Cisco Dual DOCSIS Channel (DDC) feature provides redundancy to cable voice and data customers
by using two or three CMTSs with connected RF upstreams and downstreams. Redundancy is provided
by controlling each CMTS on which the cable modems register, and by allowing movement of the cable
modems between the Cisco CMTS systems.
Cisco DDC provides redundancy during planned downtime, especially during software upgrades, with
minimal configuration or control external to the Cisco CMTS.
For information about configuring, maintaining and troubleshooting DDC on the Cisco uBR7246VXR
router, refer to the section “Configuring Dual DOCSIS Channel on the Cisco uBR7246VXR Universal
Broadband Router” in the following document on Cisco.com:
• Cisco Dual DOCSIS Channel (DDC) on the Cisco uBR7246VXR Universal Broadband Router
http://www.cisco.com/en/US/docs/cable/cmts/feature/docs_DDC.html
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