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Cisco uBR7246VXR

The Cisco uBR7246VXR Universal Broadband Router is a service-enabling, communications-grade cable modem termination system (CMTS) that offers carrier-class reliability, modular scalability, and significant investment protection. Because of the Cisco uBR7246VXR's support for a broad range of features, cable operators can cost-effectively deploy solutions that address a wide range of density, performance, and service requirements, and feel confident the router also will support future networking needs. 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 primary benefits of the Cisco uBR7246VXR is its modularity. The Cisco uBR7246VXR works with a variety of line cards, network interfaces, processors, I/O controllers, and memory options to offer customers customized configurations to meet network needs.
The Cisco uBR7246VXR features:

- Four cable line cards to connect to the cable plant.

- Two port adapters (one slot for dual-width port adapter) to connect to the IP backbone and external networks; a range of network interfaces is available.

- One Cisco network processing engine (NPE) that includes the choice of the Cisco uBR7200 Series NPE-G1 Network Processing Engine, Cisco uBR7200 Series NPE-400 Network Processing Engine, or Cisco uBR7200 Series NPE-225 Network Processing Engine.

- One I/O controller that includes the choice of a standard I/O controller, controller with one Fast Ethernet port, or controller with two Fast Ethernet or Ethernet ports for a chassis with a Cisco uBR7200 Series NPE-400 or Cisco uBR7200 Series NPE-225. For chassis that contain the Cisco uBR7200 Series NPE-G1, customers have the option of operating with or without an I/O controller.

- One cable clock card to lock onto and propagate a T1 clock signal throughout the router midplane.


Cisco uBR7200-NPE-G1

The Cisco uBR7200-NPE-G1 takes advantage of the latest developments in microprocessors specifically designed for data networking applications. These chips combine many of the critical components of a network device onto a single piece of silicon. This conglomeration of components means that many parts of the system can now run at much faster speeds because they are located on the same chip, instead of spread across several inches on a printed circuit board. For example, the processor integrates functions such as the memory controller, system controller, non-volatile random access memory (NVRAM), console and auxiliary ports, and Flash storage device controller; all on the same chip as the system CPU. This means that these devices are now integrated into a single network processor. Another important technical feature of the Cisco uBR7200-NPE-G1 is that it includes three Ethernet interfaces as part of the system CPU. These interfaces, which can run at any speed from 10 Mbps Ethernet to 1000 Mbps Gigabit Ethernet, are also on the same piece of silicon as the system CPU. There is no bus bottleneck because the interfaces feed directly into the CPU at extremely fast internal chip speeds. High-speed LAN interfaces that once had to share peripheral component interconnect (PCI) bus bandwidth with other port adapters and I/O controllers can be moved to the processor to free up bus bandwidth for WAN port adapters. The integrated CPU in the Cisco uBR7200-NPE-G1 has one more technical feature of considerable interest. The Cisco uBR7200-NPE-G1 introduces a new bus technology to the Cisco uBR7200 Series. The Cisco uBR7200 Series and all port adapters use industry-standard PCI bus technology. PCI technology helps guarantee that port adapters will be compatible with any system using an industry-standard PCI bus. Using such a standardized and well-known technology has led to other products from Cisco, such as the Cisco 7200, 7500, and 7600 series, all of which use port adapters supported on the Cisco uBR7200 Series. Recently, PCI standards have led to the development of a new standard bus technology known as Lightning Data Transport (LDT) or HyperTransport.

Cisco uBR7200 Series MC28U

The Cisco uBR7200 Series MC28U Broadband Processing Engine is a cable line card that brings new choices and capabilities to the Cisco uBR7246VXR Universal Broadband Router platform. The line card features dedicated media access control (MAC) layer hardware for maximum performance in large-scale cable deployments. The line card offers two downstream modulators, an integrated upconverter, and eight upstream burst receivers on a single line card that embeds the most advanced RF capabilities for the Cisco uBR7246VXR.