Troubleshooting guide

7-4
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 7 Troubleshooting the CMTS
• Integrated Time Of Day server
• Integrated DHCP server
• Per SID Bandwidth Request /Grant counters
• QoS for voice: LLQ, TOS
• Point to Point Protocol (PPP)
Performance Redundancy/Availability/Compatibility Features
The Cisco uBR7246VXR has a carrier class architecture with redundant components, modular design
and hardening facilitates maximum performance and uptime in mission critical applications.
• Enhanced processor performance with NPE-300
• Higher packet throughput - supports high speed connections to carrier class backbone fiber rings.
• Built on Cisco 7200 platform with proven reliability in complex environments
• Expandable, High Density Design - scalable to track subscriber demands - support for denser
subscriber connections for head end
• Interoperable with Cisco uBR7200 series - investment protection for installed CMTS equipment
• Accepts uBR7200 series plugins - investment protection
• DPT support - direct optical interconnection - eliminates the need for add drop multiplexers -
maximum network efficiency via spatial reuse protocol
• Hot Swappable Components - maximum reliability and minimum downtime in the event of an
outage
• Online insertion and removal of plugin adapters - interfaces can be added/removed without service
interruption.
• Spectrum Management capability with optional modem card - improved reliability and scalability
of services through intelligent use of limited upstream bandwidth - even in noisy plant
environments.
• HSRP facilitates fast cut over to a backup router
• Dynamic ranging - Cisco patent pending feature that supports quick restoration of service following
a catastrophic plant failure.
• Modem Power Enhancement adjustments for low SNR failures
• Clock synchronization for voice applications.
• Baseline Privacy Interface (BPI)
Classes of Service
The Cisco uBR7246VXR also provides multiple classes of service to include:
• QoS- CAR, Cisco Express Forwarding (CEF), Weighted Random Early Detection (WRED),
TAG/Netflow switching, Weighted Fair Queuing, Resource Reservation Protocol (RSVP)
• Spectrum Mangement Phases 1 and 2
• DOCSIS 1.0 QoS, DOCSIS 1.0 QoS extensions, Multi-SID support (QoS)
• Rate Shaping (includes ToS)
• QoS profile enforcement