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Home Solutions Community Broadband Networks MRV Solutions for Community Broadband Networks |
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MRV Solutions for Community Broadband Networks MRV provides one of the broadest and strongest solutions for high-speed community networks. Our products range from Ethernet and VDSL (Very high speed Digital Subscriber Line) access all the way to core IP Routers and Wave-Division Multiplexing products. MRV offers a fully integrated solution for a variety of flexible, scalable, managed community networks that are able to address the requirements of all of the various markets and customers in the Community Broadband marketplace. The Access Layer – Ethernet and EoVDSL The OptiSwitch™ product line of MRV provides a flexible, configurable system for providing Ethernet and Ethernet-over-VDSL access connectivity. MRV provides a full solution for 10/100 and Gigabit Ethernet connectivity, with superior Quality of Service (QoS) capabilities, using the MRV’s unique Ethernet Circuit technology. MRV also provides the widest variety of copper and optical Ethernet interfaces, allowing enormous flexibility in creating access networks. For the residential, small business, and MTU/MDU (Multi-Tenant/Dwelling Units) marketplaces, MRV provides a solution using Ethernet carried over VDSL technology (which shares Ethernet packets on the same wire as the standard telephony network). Ethernet Circuit technology is an advanced access technology that enables secure communication, with end-to-end QoS in carrier class networks. The Ethernet Circuit technology is part of MRV’s OptiSwitch product line and it enables networks providers who use high quality access networking infrastructure to offer a variety of services to support networking features such as intrusion control, rate limiting, MPLS VPNs (Virtual Private Networks) and optical wireless transmission. By implementing the Ethernet Circuit technology, carriers can support Service Level Agreements (SLAs) with subscribers of their network services. Unlike regular LAN switches, OptiSwitch™ Ethernet Circuit switches have the ability to recognize frames as belonging to a specific stream of information, a circuit, and attach to this stream a variety of parameters related to the way these frames are to be handled across the network, including rate limitation, intrusion control and end-to-end QoS and traffic engineering. This technology is designed to allow carriers to generate revenue from services that traditionally required circuit-switching technology, as well as from new services, which require Ethernet and IP switching technology. As a service enabler technology, the Ethernet Circuit enables the construction of multiple integrated Voice, Video and Data streams of information. MRV’s award winning Ethernet Over VDSL (EoV) solutions provide wire speed Ethernet Broadband Access for high bandwidth connectivity over standard telephone cabling. Today’s Broadband Access networks can provide native IP services at multi Megabit per second speed to end user’s premises. Using emerging access technologies such as EoV, carriers can deliver broadband services such as Broadband Internet Access, Video-on-Demand, VPNs, Game-on-Demand and others. The solution provides a symmetric 15 Mbps Ethernet link over standard telephone lines, reaching distances of up to 7,800 feet (2,400 meters). It also includes full QoS (including rate limitation per flow), and the security support required to construct a high-speed community access network. Whether connecting with VDSL, 10 Megabit, 100 Megabit, or even Gigabit Ethernet, and whether using copper or fiber as the medium, MRV provides a complete solution for all Ethernet access technologies. When coupled with the backbone and PoP-to-PoP strategies outlined below, the total solution is a unique, flexible architecture for all community broadband networks. PoP-to-PoP Links with Free-Space Optics Free-Space Optics (also known as FSO, or Optical Wireless) is an optical transmission system in which light travels through the air instead of a glass or plastic fiber. FSO communications systems use laser light to transmit a digital signal between two transceivers. The transceivers must be securely mounted atop buildings or other suitable locations. In order for the digital signal to be transmitted and received, there must be clear line of site between each FSO unit. In other words, there should be no obstructions such as trees or buildings between the transceiver units. FSO is primarily deployed where performance, security, rapid deployment, and cost-savings are critical issues. The TereScope™ line of FSO products from MRV, ranging from 1.5Mbps to 2.5Gbps in bandwidth, provides a solution for any protocol in common use both in Carrier and Enterprise networks. The FSO systems interface to the rest of the network switches, hubs, bridges or routers with standard copper or multimode fiber cabling. The network configuration is designed as if the FSO link was a fiber optic cable running between multiple sites. Many FSO systems provide protocol transparent connectivity at the physical layer. All FSO technology, though wireless, is extremely secure, and does not suffer from the passive listening problems that plague radio technologies. MRV also provides a mesh infrastructure system based on the TereScope™ optical wireless links. Using a mesh topology, the building Points of Presence connect to the many offices on the broadband access networks. What makes a mesh topology so effective is that it employs a large number of point-to-point links, creating a network where every location can be accessed from a number of alternatives and redundant links. The building is connected via the TereScope™ Free Space Optics (FSO) product line. It provides optical wireless connectivity with rates up to Gigabit Ethernet, allowing high-speed access where fiber optic cabling is unavailable or difficult to deploy. With over 5,500 links deployed with a broad customer base around the world, and many technology patents, MRV is the leader in FSO products and technology. IP and MPLS Backbones The backbone of a community broadband network must be strong, flexible, resilient, and cost-effective. One of the best ways to simultaneously achieve these goals is to use Ethernet, IP and MPLS connectivity. Since the majority of the network traffic in the community will generally be Internet or IP traffic, the backbone of course must provide full IP routing capability. The additional support of Ethernet VLAN and MPLS capability allows the network architecture to be more flexible, providing services to business customers beyond simple Internet access, such as Transparent LAN Services and guaranteed QoS. Using MRV’s backbone solution, with OptiSwitch, OptiSwitch-M, and OptiSwitch-Z switches and routers, the network provider can offer point-to-point and point-to-multipoint connections using Virtual MAN and Transparent LAN Services (TLS) with guaranteed QoS. These services are based on sophisticated integration of 802.1Q VLANs, DiffServ and traffic-engineering technologies together with multipoint MPLS-VPNs to create a transparent transport network for multi-site Enterprises. This combination allows the Enterprise network to behave as if it were all in a single, controlled location, even though the physical equipment is distributed across several facilities spread around the community. MRV’s backbone technology scales with the network, providing low-cost options for carriers that are just starting out, and ranging all the way through core IP routing technology with 100’s of Gigabits of capacity for entire metropolitan or regional areas. CWDM/DWDM Transport Technology Coarse and Dense Wave-Division Multiplexing (CWDM and DWDM) provide a mechanism to optimize the deployment of high-speed data services on the fiber-optic cabling. In both technologies, many individual wavelengths each carry an independent data stream (typically over 1Gbps per wavelength), all on the same fiber-optic cable. With this technology, two new options are available for the community network. First, the backbone may be simplified, with more bandwidth running on the same available fiber. This option simplifies the physical network design, and can be a cost effective way to increase capacity. Second, the community may provide wavelength services, where a large facility, be it government, health-care, or business, uses an entire wavelength to connect from one point in the network to another. In this case, a single customer may occupy a huge amount of bandwidth without affecting the rest of the network. MRV provides a full range of CWDM and DWDM solutions, both with modular and fixed forms, and providing connectivity to a vast array of protocols and technologies. Using the FiberDriver™ lines of fixed and modular CWDM and DWDM systems, virtually any network can be built whether it simply increases bandwidth usage of the fibers, or provides direct wavelength services to large customers. Additionally, MRV’s innovative eWDM solution provides a simple, yet extremely flexible and efficient way to deploy Optical Gigabit Ethernet services. The Colors (wavelengths) originate directly from the OptiSwitch™ modules, either directly attached, or using Colored GBIC or SFP optical modules. The optical add-drop multiplexer needs only split and combine the received wavelengths, with no need for Optical-Electrical-Optical (O-E-O) conversions that are usually required to "translate" standard optical transmission from traditional switches into colors. This solution simplifies the network architecture by reducing the number of optical components, and likewise reduces the cost. The combination of Colored Ethernet and WDM technologies allows for the design of a flexible and highly available multi-service network, extending existing fiber-based infrastructure transparently over a broadband network and optimizing the use of fiber investment. Network Administration and Management No network is complete without the management infrastructure. Most companies provide a network management solution using Web-based management and SNMP. MRV provides a comprehensive solution covering these topics as well as remote presence management, a critical component of multi-site network administration. MRV’s MegaVision Web™ network management system (NMS) provides a complete solution for managing MRV and other networking devices via IP/SNMP. Once the MegaVision Web server is in place, the network administrator can simply use any web browsing software to view statistics, errors and alarms, and to make configuration changes (such as adding new subscribers). MegaVision provides a simple graphical interface, with little or no training required to get an administrator up to speed, and reducing the amount of time it takes to accomplish the constant network administration tasks. In addition, MRV provides the In-Reach complete remote presence management solution, that allows network and system administrators to proactively respond to all remote management, configuration and data acquisition needs as if they were physically there. Remote Presence technology seamlessly provides the secure connectivity and access to any serial device and equipment console port, real-time visibility of remote site and equipment status, and immediate response to any remote condition or event in an automated or manual fashion. Only MRV offers terminal and secure console server solutions with power control, and secure console with high-density alarm, sensor and power management all in one platform. These capabilities can be accessed either in-band through the data network, or out-of-band, through the telephony network, providing a fully redundant communication path to the critical network infrastructure elements. The In-Reach series also provides network monitoring and management through its software-based fault management system for MegaVision, which collects, catalogues, prioritizes and displays network events in an easy-to-read format. The In-Reach solution increases network and system uptime and decreases operational costs by effectively managing globally distributed networks with countless remote elements, from any location. Network Security One critical requirement in any community broadband network is the ability to define a secure connection that cannot be tapped or tempered with by unauthorized users. Using MRV's OptiSwitch™, TereScope, FiberDriver and In-Reach products, this security is available at all levels of the network, Access, Transport and Core. First and foremost, all of MRV’s products are themselves secure, allowing only authorized administrative access, and implement many types of security and auditing features, including Secure Shell Access (SSH), RADIUS authentication, and 802.1Q-based VLANs. In the access network, the MRV architecture can physically prevent subscribers from tapping into neighboring subscriber’s traffic, by disabling sending data directly between subscribers. In this case, the electrical signals from a subscriber’s traffic do not reach other subscribers’ ports, preventing even wire-tapping or packet sniffing. The OptiSwitch™ Ethernet Circuit security features also provide tools for prevention of subscriber masquerading. When not enforced, subscribers can impersonate other subscribers by using their IP source address. Such security flaws can result in subscriber’s abusing their peer’s SLAs and attacking other networks and computers without revealing the true source behind these attacks. Administrators can also implement intrusion control by correlating each IP address to a physical port in a specific system. All incoming IP traffic is inspected on the access port. Incoming frames from a port are dropped if the source IP address is different from the IP addresses expected on this port. This feature disables any wire that is not activated by the carrier, preventing "pirate subscribers" – intruders that physically gain unauthorized access to a wire or a port. Integrated Solutions Only MRV provides a completely integrated, secure, end-to-end solution for community broadband networks. At the access layer, the MRV solution provides any form of Ethernet connectivity, from VDSL over standard Telephone-wires, up to Gigabit Ethernet, with complete intrusion and traffic rate control. In the backbone, the complete IP and MPLS solution connects these high-speed networks together, and even allows the network to offer Virtual Private Networks and unmatched Quality of Service. Where there is no fiber, or fiber cannot easily be deployed, MRV provides a solution using Free-Space Optics technology, which can be deployed quickly and easily to carry any protocol from one building to the next without digging up the street. When Gigabits aren’t enough, or when a customer requires a full wavelength to itself, MRV provides a full solution of Wave Division Multiplexing technology. And finally, to wrap it all together, MRV provides a unique network management system that allows in-band and out-of band control over the network elements, right down to the power strips. To find out more about MRV solutions for Community Broadband Networks, contact your local MRV sales representative at sales@mrv.com. |
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