ApplicAtion note w w w . a d c . c o m • + 1 - 9 5 2 - 9 3 8 - 8 0 8 0 • 1 - 8 0 0 - 3 6 6 - 3 8 9 1 LoopStar ® 700 Ethernet Access and Transport Expanding Legacy SONET/SDH and TDM Networks to Drive Metro Ethernet Revenues Overview As service demand grows in metro networks, service providers need to be cost-conscious as they expand or evolve networks to meet new demands. They need to extend the value of installed systems, run more services on existing networks, and retain customers by offering on-demand access to a variety of services. And they want to reduce the cost of providing those services. SONET and SDH have been widely deployed by telephone companies and common carriers for more than a decade. This reliable, Layer 1 transport technology, based on time-division multiplexing (TDM), continues to reap revenues from traditional voice and leased-line data traffic. However, the growing popularity of Ethernet raises new issues for SONET/SDH metro networks. As customers seek to extend Ethernet services across multiple locations in a city or region, SONET/SDH networks have to adapt in response. The winning solution for today’s metro market is a platform that extends the value of carriers’ investments in SONET/SDH while delivering all of their metro services economically, flexibly and reliably. That solution is ADC’s LoopStar 700 converged packet access platform – a metro edge solution that bridges the TDM and packet worlds to deliver flexible, high-speed Ethernet services over existing SONET/SDH backbones. Effective SONET/SDH Solutions for Today’s Multi-Service Realities Service providers need to determine the best way to support diverse subscriber-side services on a transport infrastructure that wasn’t originally designed for Ethernet. They also have to find the best way to reach all locations with a cost-effective and universal solution. Some carriers have considered separate overlay Ethernet networks for packet traffic. However, this approach requires additional fibers and is costly, inefficient, complex, and hard to provision and manage. It also leaves the carrier with two systems to upgrade as service needs grow. Other carriers might consider using “next-generation SONET” multiplexers that map Ethernet to part of the SONET bandwidth. The problem with this approach is the high first-cost of building out a new network before the first customer is signed up. These solutions also lack intelligent bandwidth features needed to manage customer SLAs, and support for multi-point Ethernet connections is weak. Furthermore, neither overlay nor next-generation SONET networks address the situation where the customer is off-net or indirectly attached to the carrier’s point-of- presence. The LoopStar 700 family of products offers a compelling, cost-effective alternative. With these solutions, carriers can deploy one universal, easy-to-manage platform to extend Ethernet services over existing SONET/SDH and TDM networks. Compared to next-generation SONET, the LoopStar 700 solution offers lower cost of entry, strong multi-point Ethernet connectivity. It also provides metro-class Ethernet features such as VLANs for traffic management and security, traffic prioritization, committed and maximum rates at a granular level, traffic aggregation across multiple links, and support for Virtual Private LAN Service (VPLS) and Multi-protocol Label Switching (MPLS). 2 / 0 6 • 1 0 2 3 1 7 A E LoopStar ® 700 2 w w w . a d c . c o m • + 1 - 9 5 2 - 9 3 8 - 8 0 8 0 • 1 - 8 0 0 - 3 6 6 - 3 8 9 1 LoopStar ® 700 Ethernet Access and Transport Multi-Service Capabilities for Customers on SONET/SDH Rings or Off ADC’s LoopStar 700 system is optimized for high-density, metropolitan-area networks serving single enterprise customers, multi-tenant units and campus environments. High-density, NEBS packaging with front access to interfaces makes the LoopStar 700 simple to install in equipment wiring closets at customer premise locations. For an “on-net” building already “lit” with an existing add-drop multiplexer (ADM), LoopStar 700 units can be attached to the existing ADM using typical interfaces, including NxT1/E1, DS3/E3, OC-3c/STM-4. On the subscriber side, this solution provides copper and fiber Ethernet interfaces, from 10/100 Mbps to Gigabit Ethernet. What if the serving area is a high-rise building or campus, and carrier needs to reach customers beyond the 100-meter limit of Ethernet connections? What if they are restricted to fiber riser? What if they want to extend service to a nearby customer, but the revenue potential doesn’t cost-justify extending the SONET/SDH ring to that location? The LoopStar 700 is ideally suited for all of these situations. This solution can subtend off another LoopStar 700 through a fiber or copper riser to extend multi-service capability to all floors in a high-rise building or all buildings in a campus. This subtending configuration, coupled with a modular interface architecture, makes it very economical to extend services to small serving areas – and gain early-mover advantage to promote additional services. For an “off-net” building not served by an existing ADM, where carriers rely on leased circuits from an alternative carrier, the LoopStar 700 product family provides significant advantages. It offers the carrier the ability to match the circuit size to the location’s needs, ranging from NxT1/E1, DS3/E3, and OCn/STMn. The LoopStar 700 also offers uniform services to multi-location customers who are both on-net and off-net, and it extends management visibility and provisioning all the way to the remote customer edge. In addition, LoopStar 700 products can combine Ethernet traffic with legacy T1/E1 circuit traffic to further reduce costs. Using a robust and patented circuit emulation capability, this platform packetizes each T1/E1 circuit and uses sophisticated timing recovering and jitter management techniques to match quality that would otherwise be provided over separate leased lines. For example, a DS3 can be provisioned to carry a few T1s for PBX or videoconferencing traffic, and the rest of the bandwidth can be used for Ethernet services. The LoopStar 700 provides even more operational and leased line savings for an off-net, multi-tenant building with many customers – each with unique service bandwidth needs. Instead of terminating separate access circuits to provide services for each tenant, traffic from multiple customers and services can be consolidated over a single circuit. In the central office or hub, a single LoopStar 700 platform can aggregate traffic from multiple remote LoopStar 700s, on-net or off-net. While other solutions require a central-office counterpart for every edge device in the field, a single, high-density LoopStar 700 can cost-effectively aggregate many customer locations. This significantly reduces cost, complexity, and space requirements in the central office or hub. Alternatively, this product can feed other aggregation switches supporting standard “packet over” products. On-net building Central Office Class 5 Switch IP/MPLS Core PSTN Ethernet TDM LS 700 Ethernet TDM LS 700 Fiber-attached building LS 700 Metro SONET/SDH Network 2 / 0 6 • 1 0 2 3 1 7 A E LoopStar ® 700 3 w w w . a d c . c o m • + 1 - 9 5 2 - 9 3 8 - 8 0 8 0 • 1 - 8 0 0 - 3 6 6 - 3 8 9 1 LoopStar ® 700 Ethernet Access and Transport OCn/STM NxDS3/E3 NxT1/E1 Central Office Class 5 PSTN IP/MPLS Core TDM Ethernet TDM Ethernet TDM Ethernet Transport System Ethernet TDM OCn/STM NxDS3/E3 NxT1/E1 Central Office Class 5 PSTN IP/MPLS Core TDM Ethernet TDM Ethernet TDM Ethernet Transport System Ethernet TDM LS 700 LS 700 LS 700 LS 700 Features and Benefits The LoopStar 700 platform is designed from the ground-up to support multiple services at the carrier edge, offering service providers a number of important benefits. High Performance at Reasonable Cost The payback period on a LoopStar 700 system deployed today is 12 months or less – even if the carrier only signs one customer. Once deployed, this versatile edge device offers a compelling solution for bundled services to customers of all sizes. For further savings, carriers can deploy this platform in whichever configuration is most cost-effective for their needs: point-to-point, star-hub or multi-point. LoopStar 700 Management and Provisioning The LoopStar 700 can be managed in-band via a management virtual LAN (VLAN) or out-band via a management Ethernet or serial port. The LoopStar 700 technology suite provides the tools necessary to manage and maintain the multi-service demarcation point. Broad Range of Solution Sizes The LoopStar 700 product family offers a strong mix of sizes and entry points – from remote single customer locations to small and medium facilities, up to central office locations aggregating multiple sites. This platform is designed to support a large variety of applications, ranging from simple fiber extension, to T1/E1/J1 aggregation, to Ethernet-enabling of SONET/SDH multiplexers, to delivering toll-quality, circuit-emulated voice traffic across a packet-based IP/MPLS infrastructure. Flexible, Scalable Interfaces The LoopStar 700 family supports a flexible mix of scalable interface modules. The LoopStar 750, a four-slot, NEBS3-certified chassis for large customers, multi-tenant buildings or services aggregation locations, accepts any mix of subscriber-side and network-side interface modules. The LoopStar 722, which uses the same software base and feature set as the LoopStar 750, offers a combination of fixed configurations and a single interface module for medium to large customers. The LoopStar 745 offers Ethernet and LoopStar 745P offers Ethernet and a T1 circuit emulation port to the subscriber, as well as a DS3 uplink to the network. The LoopStar 714 and LoopStar 718 offer Ethernet over T1s or E1s bonded together with Multilink Point-to-Point Protocol (MLPPP). Network or Subscriber Interfaces Gigabit Ethernet, 100 Base-FX Ethernet, 10/100 Base-T Ethernet, OC-12c/STM-4, OC-3c/STM-1, DS3/E3, NxT1/E1 and (TDM) NxT1/E1 Support for Business-Class Metro Ethernet Services These full-featured edge platforms deliver the rich set of metro Ethernet services that carriers and their customers require. For example: ApplicAtion note Web Site: www.adc.com From North America, Call Toll Free: 1-800-366-3891 • Outside of North America: +1-952-938-8080 Fax: +1-952-917-3237 • For a listing of ADC’s global sales office locations, please refer to our web site. ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, Minnesota USA 55440-1101 Specifications published here are current as of the date of publication of this document. Because we are continuously improving our products, ADC reserves the right to change specifications without prior notice. At any time, you may verify product specifications by contacting our headquarters office in Minneapolis. ADC Telecommunications, Inc. views its patent portfolio as an important corporate asset and vigorously enforces its patents. Products orfeatures contained herein may be covered by one or more U.S. or foreign patents. An Equal Opportunity Employer 102317AE 2/06 Original © 2006 ADC Telecommunications, Inc. All Rights Reserved • Virtual LAN (VLAN) processing (tagging, swapping or stacking), based on IEEE 802.1Q standards, segregates customer or departmental traffic for security, traffic management and differentiated treatment. • Seven levels of priority can be established using 802.1P priority bits, with circuit-emulation traffic always allocated highest priority. • Rate limiting (setting committed rate and maximum burst rate) can be configured by port or by VLAN at fine granularities: 1 Mbps increments for 1-100 Mbps, and 50 Mbps increments for 100-100 Mbps. • Link aggregation improves resiliency and throughput by combining up to eight links (same or different types) into one logical link, load-balancing traffic among links, and redirecting traffic to an active link if another link in the group fails. Support for Carrier-Class Circuit Emulation Services The LoopStar 700 also delivers traditional T1 (E1 or J1) circuit-based voice/data/video services over Ethernet/IP with the same “No Compromise” quality and robustness as a circuit delivered in native TDM or SONET/SDH. The LoopStar 700 uses patented technology to resolve the difficult issues of preserving timing across packet networks, transparently handling delays and other packet impairments, and passing traffic through other switches and routers in the typical multi-vendor network Flexible Bandwidth Allocation Any combination of Ethernet and TDM bandwidth can be supported, up to the payload rate of the uplink. For example, suppose the uplink is a DS3. Rather than divide that DS3 into DS1s, and then inverse multiplex four or eight of them to form a 6 or 12 Mbps data channel, the carrier can allocate Ethernet bandwidth in 1 Mbps increments. The carrier provides 1 Mbps Internet access to a customer, and when more bandwidth is required, the connection can be bumped to 2 Mbps, or 11 Mbps or 35 Mbps, without ever having to physically change the interface. When bandwidth requirements exceed a single DS3, other DS3(s) can be seamlessly added to support greater speeds. Future-Ready, Programmable Architecture Programmable processors in the LoopStar 700 platform outperform software-based routing engines and offer more flexibility than ASICs. With this network- processor architecture, the LoopStar 700 products can be programmed to support new protocols, interfaces and features as they emerge – enabling network evolution without forklift upgrades. Intelligent Evolution Strategy As bandwidth needs grow, the LoopStar 700 can be transitioned from a SONET/SDH ring attachment to a Gigabit Ethernet or DWDM solution simply by changing out a card. Both the carrier and end user preserve their existing investment and migrate to the next-generation networks on a timetable that makes business sense. Summary ADC’s LoopStar 700 is a low-cost, compact, next-generation access network solution that enables the cost-effective delivery of Ethernet business services. The benefits of this solution include bandwidth efficiency to minimize transport costs and Ethernet service functionality to meet service providers’ requirements for class-of-service SLA flexibility. In addition, the LoopStar 700 aggregates TDM and Ethernet for simultaneous deployment of both legacy and new packet-based services. . LoopStar ® 700 Ethernet Access and Transport Expanding Legacy SONET/SDH and TDM Networks to Drive Metro Ethernet Revenues Overview As service demand grows. LoopStar ® 700 Ethernet Access and Transport OCn/STM NxDS3/E3 NxT1/E1 Central Office Class 5 PSTN IP/MPLS Core TDM Ethernet TDM Ethernet TDM Ethernet Transport