The Cisco uBR7246VXR Universal Broadband Router is a service-enabling, communications grade cable modem termination system (CMTS) that offers the highest modular scalability, carrier-class reliability, and unmatched investment protection. The Cisco uBR7246VXR, a member of the Cisco uBR7200 Series, offers exceptional performance/price and unparalleled features. It is the only platform with a family of field-installable processor upgrades. Customers can deploy scalable solutions today that address a wide range of density, performance, and service requirements, while ensuring future network needs. The Cisco uBR7246VXR was the first Data Over Cable Service Interface Specification (DOCSIS) and EuroDOCSIS 1.1 and 1.0 qualified Layer 3 CMTS. The product is the main test platform for the PacketCable Advanced Interoperability Test Network (AITN).The Cisco uBR7246VXR gives cable operators a cost-effective, scalable, and feature rich interface between subscribers and the backbone network. The Cisco uBR7246VXR offers flexible and cost-effective expansion of DOCSIS, EuroDOCSIS, or PacketCable infrastructures, supporting deployments of 1, 000 to 8, 000 subscribers. The product offers the widest range of field-installed capacity upgrades, including processors, cable line cards, and network interfaces. For cable plants not fully upgraded to support two-way transmission, the routers work in conjunction with dialup access products to support upstream traffic from DOCSIS-based cable interfaces connected to the Public Switched Telephone Network (PSTN). The Cisco uBR7246VXR supports a broad set of residential and commercial multiservice offerings, including high speed Internet access, IP telephony, and Virtual Private Network (VPN) applications. Cable operators have the ability to offer VPN services via a comprehensive set of Multiprotocol Label Switching (MPLS) capabilities. Cisco has shipped over 275, 000 upstream ports, setting a cable industry milestone and affirming its CMTS leadership.The Cisco uBR7246VXR chassis is fully radio frequency (RF) hardened to ensure virtually noise-free transmission. The Cisco uBR7246VXR supports the complete portfolio of Cisco Universal Broadband Router (uBR) line cards that offer varying upstream-to-downstream interface ratios, differing bandwidth, modulation schemes, and the ability to dynamically perform complex spectrum management. The router supports 6 MHz North American channel plans using ITU-T J.83 Annex B operation and 8 MHz PAL or SECAM channel plans using ITU-T J.83 Annex A operation.With its combination of modular performance and density, the Cisco uBR7246VXR allows network-layer capabilities to be extended to a wide range of network configurations and environments. One of the key benefits of the Cisco uBR7246VXR is its modularity. The Cisco uBR7246VXR offers a variety of line cards, LAN/WAN interfaces, processors, I/O controllers, and memory options to offer customers customized configurations to meet their network needs.Like all other Cisco routers, the Cisco uBR7246VXR runs Cisco IOS Software - the industry's most feature-rich software platform. The Cisco uBR7246VXR delivers high-performance routing capability at the edge, supporting Border Gateway Protocol (BGP4), Internal Border Gateway Protocol (IBGP), Multicast, Open Shortest Path First (OSPF), and many other routing and switching protocols. The Cisco uBR7246VXR supports NetFlow switching and quality of service (QoS) features including Weighted Fair Queuing (WFQ), Weighted Random Early Discard (WRED), and Resource Reservation Protocol (RSVP). The product enables tiered service provisioning based on DOCSIS 1.1 QoS for true traffic shaping and management. The product enables differentiated billing by providing detailed traffic statistics by IP address, protocol, QoS, and application. Advanced plant troubleshooting and diagnostics enable advanced proactive network management. Advanced spectrum management capabilities maintain reliable service to end users even in the presence of cable plant upstream noise.The Cisco uBR7246VXR offers exceptional availability, serviceability, and manageability. The Cisco uBR7246VXR supports dual current-sharing power supplies (AC or DC) and online insertion and removal (OIR) so that interfaces can be added, removed, or replaced without service interruption. A PC Flash memory card enhances reliability by storing backup software images and configuration files. Environmental monitors have levels of escalation so operators may take corrective action prior to any system shutdown. To enhance serviceability, each component of the Cisco uBR7246VXR is field replaceable.For maximum uptime, the Cisco uBR7246VXR offers the industry's first inter chassis N+1 redundancy solution with 99.999% high availability. With the highly robust, external Cisco RF Switch, Cisco IOS Release 12.2(11)BC1 supports N+1 Redundancy, supporting fast failover of connected cable modems from an active CMTS to a standby CMTS. This ensures no single point of failure in the CMTS and offers fast switchover of 3-5 seconds in the event of a system or link failure.Up to four active CMTSs can be protected by one protect CMTS with the Cisco RF Switch and N+1 Redundancy feature. This enhances customer satisfaction through highly available services.For additional flexibility, the Cisco uBR7246VXR also supports 1+1 inter chassis redundancy which does not require the external Cisco RF Switch.