WHITE PAPER IMPROVING NETWORK EFFICIENCY, RELIABILITY, AND OPERATIONS WITH IPODWDM Nokia Siemens Networks and Juniper’s Joint Solution Delivers Maximum Scale and Reliability Along With an Integrated Management System Copyright © 2010, Juniper Networks, Inc. 1 WHITE PAPER - Improving Network Efficiency, Reliability, and Operations with IPoDWDM Table of Contents Executive Summary . .3 Introduction. .3 Drivers for IP-Optical Integration . .3 Reduced Capital Expense. 4 Operational Advantages . 4 Increased Availability and Reliability. 5 Deployment Considerations for IPoDWDM . 6 Organizational . 6 Technical . .7 The Juniper-NSN IPoDWDM Solution . .7 Conclusion . 10 Appendix: Successful Deployment . .10 References . 11 Whitepapers: . 11 Datasheet:. 11 Press Release: . 11 About Juniper Networks. 11 Table of Figures Figure 1: Moving colored interface into router saves on transponder shelf costs. 4 Figure 2: Additional elements and interfaces mean more points to provision and more potential points of failure.. 4 Figure 3: Clear demarcation between IP and optical can limit end-to-end visibility.. 5 Figure 4: Differences between Layer 1 and Layer 3 performance management view. 6 Figure 5: With DWDM integrated on a router, IP and optical demarcation points (and responsibilities) can be less clear.. .7 Figure 6: Router interface becomes an integral part of DWDM network, with single unified management system.. 8 Figure 7: Screen shot of TNMS, showing a sample network management view. 8 Figure 8: Screen shot of TransNet, NSN’s planning software which can plan and provision the integrated IPoDWDM solution.. 9 Figure 9: IPoDWDM Deployment example at UNInett of Norway . 10 2 Copyright © 2010, Juniper Networks, Inc. WHITE PAPER - Improving Network Efficiency, Reliability, and Operations with IPoDWDM Executive Summary This paper is essential reading for service providers looking to understand the impact of converging IP and optical networks. It describes the benefits that are driving interest in IP over dense wavelength-division multiplexing (IPoDWDM) technologies, and outlines factors that should be considered before selecting an IPoDWDM solution. A number of intersecting factors are causing service providers to reevaluate the way core networks are built. As traffic growth continues, IPoDWDM is emerging as an exciting technology that promises to help service providers increase efficiency, reliability, and scale in their core networks—while meeting their profitability goals. However, not all IPoDWDM solutions are created equal and without proper management integration, IPoDWDM can present technical and organizational challenges. Nokia Siemens Networks (NSN) and Juniper Networks® have combined their respective strengths in optical and IP networking to deliver an integrated IPoDWDM solution with industry leading efficiency, reliability, and management capabilities. The joint Juniper-NSN IPoDWDM solution enables service providers to create an end-to-end, fully integrated IP-optical solution that improves efficiency and reliability; is easily managed and provisioned; and prepares them for the next-generation of traffic growth. Introduction As Internet traffic continues to grow, carriers are striving for solutions that enable them to scale their core IP and optical networks while keeping both capital and operational expenses at a minimum. One of the technologies that promises to help carriers meet these seemingly conflicting objectives is IPoDWDM. As outlined in an earlier whitepaper1, IPoDWDM integrates DWDM transport interfaces directly into the router, enabling the convergence of traditionally distinct IP and optical networks. Integrating optics into the router removes the need for numerous optical-electrical-optical (OEO) conversions and eliminates the network elements that perform this function—thus reducing both CapEx and OpEx, while at the same time improving network efficiency, reliability, and availability. While the benefits of IPoDWDM are well understood, IP-optical integration can also present its share of challenges— both organizationally and technically. Convergence is a noble goal, but in service provider networks it is often more complicated than it first appears. To help carriers improve efficiency, reliability, and scale, Juniper Networks and Nokia Siemens Networks have formed a partnership to deliver a joint IPoDWDM solution that simplifies the transition to converged IP-optical networks. By combining Juniper’s 10-Gigabit Ethernet DWDM Optical Transport Network Physical Interface Card (OTN PIC) with NSN’s Multireach DWDM platform hiT7300 and Transport Network Management System (TNMS), this joint solution combines the IP expertise of Juniper Networks with Nokia Siemens Networks’ strengths in optical layer networking and management systems. Drivers for IP-Optical Integration Even as the general economic uncertainty persists, Internet traffic continues to grow rapidly, fueled by applications such as video, mobile applications, and—increasingly—cloud computing and software as a service (SaaS). This growth is driving carriers to increase the capacity of their networks. The difference now is that any investment is expected to increase operational efficiency and reduce operating costs, even as it increases scale, reliability, and availability. In the core of the network, the integration of Optical Transport Network (OTN) technology into routers is an evolutionary improvement that can eliminate bulky, expensive, and relatively unreliable optical transponders. By eliminating racks of equipment, service providers expect that IPoDWDM will reduce CapEx, improve operational efficiency, and significantly increase reliability and availability. 1 OTN Interfaces for IP over DWDM, Juniper Networks, Inc. Copyright © 2010, Juniper Networks, Inc. 3 WHITE PAPER - Improving Network Efficiency, Reliability, and Operations with IPoDWDM Reduced Capital Expense Capital expenses are always closely scrutinized—but rarely have service providers been more sensitive to unneeded capital expenses than now. The general economic conditions—along with margin pressures that have been added with increasing traffic which doesn’t always come with correlative increases in revenue—are shining a spotlight on service providers’ capital expenses. This cost consciousness is helping drive interest in IPoDWDM. Because integrating DWDM interfaces into the router eliminates the need for stand-alone transponders to translate the wavelengths, IPoDWDM solutions enable reduced capital expenses by reducing the number of boxes carriers must purchase. Initial deployments at 10GbE promise some degree of cost savings, but the capital savings from IPoDWDM really begin to accelerate as the speed of the integrated interface increases. As the industry moves towards 40GbE and 100GbE integrated solutions, savings can be further reduced by eliminating interfaces on both the router and on the transponder (i.e., one 100GbE interface is more cost-effective than 10x10GbE interfaces). Traditional IP and Optical Networks Router-Integrated DWDM Standalone Transponder DWDM System Router • Eliminates Standalone Transponders • Reduces CapEx and OpEx Figure 1: Moving colored interface into router saves on transponder shelf costs Operational Advantages While today’s CapEx crunch may be the initial motivator for equipment consolidation, ongoing OpEx is a much more significant cost in the long run and is where operators can see the most gains from IPoDWDM. According to some industry analysts, operational expenses amount to as much 70% of total costs and, unlike capital expenses, are a recurring charge for the life of the equipment. Operators recognize this, and recognize that by integrating optical interfaces into existing routing equipment, IPoDWDM can save millions of dollars in power, space, and cooling associated with maintaining stand-alone racks of transponders. In addition to the ongoing operational cost savings associated with equipment IP-optical integration, operators are pursuing IPoDWDM for another equally important factor—simplified network design. Basic engineering theory dictates that reliability can be improved by eliminating potential points of failure. As described above, IPoDWDM can eliminate entire racks of optical transponders, giving operators one less potential failure spot. Fewer components to fail also mean fewer components to manage. A key benefit of IPoDWDM technology is the fact that it enables the operator to manage an entire router-to-router optical link as a single entity. More Number of Network Elements Means More Interface to Provision: Figure 2: Additional elements and interfacesMore Points mean of more Failure points to provision and more potential points of failure. 4 Copyright © 2010, Juniper Networks, Inc. WHITE PAPER - Improving Network Efficiency, Reliability, and Operations with IPoDWDM The need to provision multiple network elements can become a bottleneck when turning up services—and today, time- to-market is absolutely critical. Additional equipment such as optical transponders to provision means additional time required to turn up a service—and when that equipment is being managed across different network layers (and therefore different organizations), it can make the service turn-up process even more cumbersome. IPoDWDM promises to provide a single, fully integrated management and service provisioning platform from Layer 1 through Layer 3. Increased Availability and Reliability As carriers pursue the efficiency and simplicity offered by IP networks, more applications