Cisco 7246VXR - uBR Router User Manual

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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
• N+1 Redundancy for the Cisco CMTS
http://www.cisco.com/en/US/docs/cable/cmts/feature/guide/uFGnpls1.html
HCCP Support for the Cisco uBR-MC16S Cable Interface Line Card
Cisco IOS Release 12.1(7)EC adds support for the Cisco uBR-MC16S cable interface line card when
used in an HCCP 1+1 redundant configuration. Previously, the Cisco uBR-MC16S card could be used
in a redundant configuration only by first disabling its intelligent spectrum management features.
In Cisco IOS Release 12.1(7)EC and later releases, the Cisco uBR-MC16S card can be used as the
protect cable interface or working cable interface, with either another Cisco uBR-MC16S card or a Cisco
uBR-MC16C card. Table 9 shows how a switchover in each of these configurations affects the intelligent
spectrum management features of the Cisco uBR-MC16S card.
For additional information, refer to Advanced Spectrum Management Features for the Cisco
uBR-MC16S Spectrum Management Card on Cisco.com.
Note HCCP support for the Cisco uBR-MC16S card exists only in Cisco IOS Release 12.1(7)EC or later, so
you cannot use the advanced spectrum management features in Cisco IOS Release 12.1(7)CX with
HCCP 1+1 redundant configuration.
HCCP N+1 Redundancy
HCCP N+1 Redundancy is made possible with the addition of the Cisco RF Switch to your cable
headend network. Together with the Cisco uBR10012 and/or the Cisco uBR7246VXR routers, the Cisco
RF Switch provides a fully redundant system that enables cable operators to achieve PacketCable system
availability, minimize service disruptions, and simplify operations.
HCCP N+1 Redundancy is an important step toward high availability on CMTS and telecommunications
networks that use broadband media. HCCP N+1 Redundancy can help limit Customer Premises
Equipment (CPE) downtime by enabling robust automatic switchover and recovery in the event that there
is a localized system failure.
Beginning with Cisco IOS Release 12.2(15)BC2, HCCP N+1 Redundancy adds synchronization
between HCCP Working interface configurations and those inherited upon switchover to HCCP Protect
interfaces. This makes the configuration of both easier and switchover times faster.
Ta b l e 1-12 Switchover Operation for a Cisco uBR-MC16C/Cisco uBR-MC16S Configuration
Working Cable Interface Protect Cable Interface Operation After Switchover
Cisco uBR-MC16C Cisco uBR-MC16S The protect card (Cisco uBR-MC16S) uses the
same upstream frequency as the working card, but
after the system stabilizes, the protect card begins
using the intelligent spectrum management
features of the Cisco uBR-MC16S card, as
configured on the protect CMTS.
Cisco uBR-MC16S Cisco uBR-MC16C The protect card (Cisco uBR-MC16C) uses the same
upstream frequency as the working card. If the
upstream becomes unstable, the Cisco uBR-MC16C
performs only blind frequency hopping.
Cisco uBR-MC16S Cisco uBR-MC16S The protect card initially uses the same upstream
frequency as the working card, but after the system
stabilizes, the protect card continues using the
intelligent spectrum management features of the
Cisco uBR-MC16S card.

Cisco 7246VXR - uBR Router Specifications

General

Brand	Cisco
Model	7246VXR - uBR Router
Category	Network Router
Language	English