1 WHITE PAPER CLOUD-READY NETWORK FOR BRANCH OFFICES Delivering a Superior End-User Experience for the Globally Distributed Workforce April 2014
2 TABLE OF CONTENTS Executive Summary... 1 Challenges... 1 A Deteriorating End-User Experience... 2 Increased WAN Traffic... 2 Backhauling and Latency... 3 Backhauling and Internet Content... 4 Increased Complexity and Cost... 5 When Branch-Office Backup Circuits Sit Idle... 5 The Downside to Centralized Internet Security... 6 Impact on Cloud Strategies... 6 The Solution: A Cloud-Ready Network... 6 A Branch-to-Cloud Topology... 7 The Internet as a Private WAN... 7 Virtela s Cloud-Ready Network... 7 The Flexibility to Meet Any Branch Office s Needs... 8 Virtela Enterprise Services Cloud... 8 Benefits...10 The Payoff for Branch-Office Users and Enterprise CIOs Cloud End-user Experience Costs Management Security Conclusion...12 References...12
3 Cloud-Ready Network for Branch Offices 1 ZK Research estimates that over 75% of enterprise employees reside in locations other than the corporate headquarters. This includes telecommuters, remote workers and branch office workers. In addition, more organizations are collaborating with customers and partners beyond the traditional corporate walls. 1 EXECUTIVE SUMMARY Enterprises across industries are expanding operations globally to get closer to their customers, partners and suppliers and better penetrate target markets. To build a sustainable global enterprise, companies must continually meet the unique requirements of their branch offices, sales offices, manufacturing plants, distribution centers and remote workers located around the world. These distributed staffs need access to internal systems such as ERP and applications as well as quick, reliable, secure access to an increasing number of cloud-based applications. They also need access via the Internet to relevant local content that supports their day-to-day activities. To enable this growing distributed workforce, global enterprises provide a WAN infrastructure by leveraging a combination of MPLS and Internet services, often from traditional service providers. Using the provider s global private network as the backbone, these providers typically backhaul Internet traffic from branch offices to centralized Internet gateways at customer data centers that can be continents away from the end user. However, Internet traffic continues to increase, leaving MPLS networks overburdened and end users frustrated. Branch-office users often experience slow network connections and unresponsive applications while Internet traffic consumes valuable MPLS bandwidth, driving up cost. Instead, enterprises can connect branch-office users directly to the local Internet rather than an Internet gateway outside of their region. Virtela s cloud-ready network transforms the traditional WAN architecture into a multi-access distributed design. The solution moves internal and cloud applications closer to branch-office users improving application performance, decreasing cost and management complexity, and ensuring reliable Internet security in the cloud or on premise. CHALLENGES Branch-office employees require access to the same applications and data as employees located at corporate headquarters. Global employees depend on business-critical systems such as Oracle E-Business Suite, NetSuite, Sage ERP and Microsoft Dynamics. They also need quick, reliable, secure access to an increasing number of cloud-based applications like Salesforce.com, Google Apps and Microsoft Office 365 hosted at third-party data centers. However, MPLS was originally designed for the era of centralized IT. For more than a decade, the typical branch-office WAN delivering these services has been built with service provider MPLS links connecting these offices via a fulltunnel architecture to a central data center. Using the provider s global private network as the backbone, these providers typically backhaul Internet traffic from branch offices to customer data centers to comply with customer policy around centralizing Internet security or because the service provider does little or no peering with regional ISPs, and often both.
4 Cloud-Ready Network for Branch Offices 2 Research shows that approximately 90% of branch offices backhaul their Internet traffic over the WAN to a central site. 2 Today, using MPLS as a single-source solution with centrally deployed Internet gateways presents significant challenges for branch-office users and CIOs alike. Many are contending with an inferior end-user experience, increased IT costs, management and billing complexity, and limitations for cloud strategies. A DETERIORATING END-USER EXPERIENCE Increased WAN Traffic A decade ago, MPLS networks provided enough bandwidth to support branch-office users, but they have been hammered by unanticipated demand from rapidly increasing Internet traffic in a growing mobile and cloud-based environment. These MPLS networks are impacted by explosive growth in: Cloud applications Real-time video and voice over IP traffic Guest networking BYOD adoption Wireless applications Consider mobile traffic on the network, for example. Network traffic data compiled by Ericsson shows that the volume of mobile data traffic increased 19% in the first quarter of 2013, while doubling year over year. 3 Studies show that MPLS networks will only get busier as Internet traffic continues to grow. According to the Cisco Visual Networking Index: Forecast and Methodology, , global Internet traffic is expected to increase threefold in the next five years, following fourfold growth in the past five years (see Figure 1). 4 Figure 1: Projected Internet Traffic Growth by Region,
5 Cloud-Ready Network for Branch Offices 3 CIOs are at a crossroads in their efforts to cost-effectively deliver superior IT services to their branch-office staffs. According to the Cloud Networking Report, cost and latency are two primary challenges that IT organizations face as a result of the growth in Internet use. 6 For branch offices, the fallout is even clearer. An ESG Research survey of senior IT professionals overseeing global ROBO IT operations discovered that improving application performance for end users was the top IT priority for their remote sites. Improving application accessibility for branch-office end users was the second priority. 7 BACKHAULING AND LATENCY In addition to the growth in Internet traffic on MPLS networks causing application performance issues, the centrally deployed Internet gateway model also impacts performance and the end-user experience. A branch-office or remote user s Internet request traverses the MPLS network to a central data center location only to be redirected out to the Internet (see Figure 2). This backhauling adds network travel and latency between the user and the ultimate destination and unnecessarily takes up MPLS bandwidth, creating issues for users, network managers and IT budgets. San Francisco Corporate Headquarters 4 MPLS 1 Hong Kong Branch Office 3 Singapore SaaS Provider 2 Internet Figure 2. Backhauling: Example of how a branch-office user in Hong Kong accesses a cloud application from a Singapore SaaS provider. Backhauling Internet Traffic: A Typical Route 1 From Hong Kong branch office via MPLS to U.S. headquarters 2 From U.S. headquarters via Internet to Singapore SaaS provider 3 From Singapore SaaS provider via Internet to U.S. headquarters 4 From U.S. headquarters via MPLS to Hong Kong branch office With 90% of enterprises backhauling Internet traffic from their branch offices through their corporate data centers, countless branch offices around the globe are impacted by the downside of this model. CIOs must consider the facts: Adding more bandwidth is costly and does not eliminate the latency issues inherent in backhauling Backhauling Internet traffic is not sustainable as more and more applications are being moved to the cloud
6 Cloud-Ready Network for Branch Offices 4 The large service providers typically do not do peering in every country or even in every region, which greatly increases the use of backhauling Traditional service providers may have a point of presence (PoP) in Korea, but they are not usually connected to a local ISP because they are not peering with them; instead, they connect the branch office to their own global Internet backbone, which impacts performance and prevents a local Internet experience Service-level agreements (SLAs) with network service providers guarantee uptime, but they do not necessarily address the response time or speed at which the network delivers services and applications to end users The cloud security concerns underlying many enterprises decisions to backhaul Internet traffic to a central gateway can be mitigated with nextgeneration cloud-based security technologies and practices BACKHAULING AND INTERNET CONTENT Whether enterprises are backhauling branch-office Internet traffic due to internal policies or because their service provider or providers do not participate in local peering, end users are impacted by not always having a local Internet experience. When forced to access the Internet via a central Internet gateway, branch-office users often access websites that originate in the same region as the Internet gateway, which may be on the other side of the globe. Unfortunately for the end user, these websites sometimes lack relevant, preferred local content. Internet Peering: How it Impacts the End-User Experience What is Internet peering? Internet peering helps transfer Internet data from one network to another. This involves agreements among network providers and ISPs to connect their Internet networks to exchange traffic freely between networks so customers can quickly access Internet content. To what extent do traditional service providers establish peering relationships? Large traditional providers typically deliver the Internet via their own private Internet network. They have limited peering with the local ISPs. How do end users come up short? A user employed by a U.S. company and working at their Hong Kong site experiences about 10ms of latency connecting to a local ISP. When a service provider lacks local peering, latency can jump to 400ms and higher because the data may be routed via their private network to their firewall in the U.S. and back just to access the Internet.
7 Cloud-Ready Network for Branch Offices 5 INCREASED COMPLEXITY AND COST Though many global enterprises are working to expand their footprint and operations, all are focused on reducing costs. However, legacy WAN architectures with centrally deployed Internet gateways and increasing Internet traffic are consuming already stretched IT budgets: Bandwidth Internet traffic crowding MPLS networks is driving unanticipated and unbudgeted costs related to the need for additional MPLS and Internet capacity Traditional service providers Global organizations that are looking to streamline IT operations by offloading network management are instead faced with the growing complexity of dealing with many different service providers and ISPs around the globe, adding management time, creating support challenges and resulting in billing complexity, which can all increase costs Legacy networks Some CIOs interested in a more distributed WAN architecture to overcome the drawbacks of the full-tunnel connection with central Internet gateway opt for a costly rip and replace approach to enhancing their existing network infrastructure Security Many of these same CIOs invest in on-premise branch-office security devices, adding both capex and opex costs Cloud applications Some enterprises discover that their legacy, overburdened WAN architectures cannot effectively support today s highbandwidth cloud applications, preventing them from taking advantage of the significant cost savings they offer In the past, distributed enterprises needed less than 500 Kbps to connect each branch location to the global network. Today, Internet traffic requires up to 10X the broadband connectivity at several Mbps. To increase their MPLS WAN bandwidth to support their growing Internet traffic, distributed enterprises would realistically need to increase their monthly MPLS service fee by at least several hundred percent. 8 Many CIOs are therefore rethinking their WAN infrastructures. WHEN BRANCH-OFFICE BACKUP CIRCUITS SIT IDLE The typical global enterprise establishes private primary MPLS networks for dozens or even thousands of locations around the globe. To provide network redundancy in the event of a primary network outage, some install an Internet VPN backup circuit at each location. While all business applications, systems and growing Internet traffic flow across the primary network, these secondary, lower-cost networks overwhelmingly sit idle, wasting budget day after day.
8 Cloud-Ready Network for Branch Offices 6 THE DOWNSIDE TO CENTRALIZED INTERNET SECURITY The explosive growth of the Internet has changed the face of security monitoring and management. Restricting user access and implementing controls are key focal areas for today s IT leaders. A primary reason that most multinational organizations backhaul Internet traffic from the branch office to a central Internet gateway is to centralize Internet security within the corporate data center. By implementing onsite firewalls, proxy servers and other security devices, they monitor and restrict access to Internet content by users in branch offices around the globe and control how employees access external cloud applications. Gartner projects that by 2016, over 50% of CRM software revenue will come from SaaS applications. As of 2011, 35% of CRM software was delivered by SaaS providers. Gartner expects that SaaS-based CRM will grow at three times the rate of on-premise applications. 9 However, branch-office users must pay the price of having to reach Internet content and cloud applications by way of an Internet gateway at headquarters that is often far removed from their region. As discussed above, these end users experience slow access to Internet sites and degraded performance of cloud and internal business applications. The centralized security model also adds considerable network overhead and requires IT resources at every branch-office location to help manage it. IMPACT ON CLOUD STRATEGIES In its current form, the backhauling approach to branch-office wide area networking does not adequately support cloud computing. However, remotesite Internet access requests represent a significant portion of the total traffic crossing the WAN, with an increasing amount of traffic devoted to cloud-based services and applications. Since approximately 50% of enterprise employees reside in branch offices and 90% of enterprises backhaul Internet traffic, nearly half of the average global enterprise is cut off from secure, in-region cloud computing. These widespread branch-office employees therefore often experience poor performance of critical applications such as Microsoft Lync, Salesforce.com, NetSuite, Concur and Dropbox storage a problem that will only intensify in the coming years. THE SOLUTION: A CLOUD-READY NETWORK For branch-office employees to have the same end-user experience as their colleagues at headquarters, an architectural shift in the WAN must take place. The fundamental change involves moving Internet traffic off the primary network and localizing Internet connectivity. Importantly, this strategy does not require ripping and replacing the existing network infrastructure. The solution enables global enterprises to effectively deliver internal business and external cloud applications to remote sites and users. However, the benefits to branch offices and enterprises on the whole are far reaching. The solution:
9 Cloud-Ready Network for Branch Offices 7 Improves business-critical application performance by lessening the load on the MPLS network Accelerates Internet access and improves cloud-application performance by moving these services to a secondary circuit and accessing Internet locally Allows branch offices to achieve complete cloud-readiness Offers a reliable, cost-effective alternative to centralized security and compliance Reduces branch-office IT staffing requirements Simplifies service provider SLAs and billing processes Decreases upfront capex costs and overall networking costs A BRANCH-TO-CLOUD TOPOLOGY Global enterprises can eliminate the fallout from backhauling Internet traffic to and from the corporate data center by instead using a branch-to-cloud topology. A cloud-ready network connects the branch office directly to the local Internet via the service provider s global cloud infrastructure. Enterprises can eliminate IT as the middleman and reduce overhead by simplifying the network architecture and greatly reducing the distance that Internet traffic travels. THE INTERNET AS A PRIVATE WAN With Internet traffic steadily increasing, and as more and more employee activities are related to the Internet and accessing SaaS applications, there is less and less value in maintaining a private network to the degree that it can deliver all enterprise applications and services globally. Instead, multinational companies with several or many branch offices can establish direct secure access to a virtual private cloud environment, in essence using the Internet as a private WAN in a highly efficient and scalable manner. The local and secure Internet connection provides branch-office employees ready access to the Internet, speeding the delivery of Internet content and enhancing the performance of cloud applications. Branch offices can use the Internet the way it was intended to be used, with local, relevant content such as local news and local merchant information, just like the consumer experience. In addition, IT can provide better services to remote workers through improved VPN connectivity and can enhance communication between teams and regional business partners that rely on online collaboration systems in their alliances. VIRTELA S CLOUD-READY NETWORK Virtela helps the modern enterprise elevate its branch-office services with a unique solution that transforms the overburdened MPLS network into a nextgeneration cloud-ready WAN with a multi-access distributed design. The solution enables CIOs to securely and cost-effectively shake the limitations of the centrally deployed Internet gateway model.
10 Cloud-Ready Network for Branch Offices 8 Virtela delivers secure connectivity directly to the cloud from any branch-office location with the Virtela s cloud-ready network. It connects users to the Internet and corporate applications via the global Virtela Enterprise Services Cloud (ESC) and local ISPs, eliminating unnecessary backhauling of Internet traffic to the corporate data center. Virtela s Cloud- Ready Network Components: Branch-office managed Internet connectivity in 190+ countries Cloud-based, globally distributed Internet security Local Internet service Private backbone connectivity (optional) Cloud-based WAN acceleration (optional) Virtela awardwinning service and support Single contract and centralized invoice THE FLEXIBILITY TO MEET ANY BRANCH OFFICE S NEEDS Regardless of how the existing branch-office primary network and VPN connections are configured, any network infrastructure can be optimized to include a secure cloud for day-to-day branch-office Internet traffic, rather than the higher-cost MPLS network that is typically plagued by bottlenecks due to increased Internet traffic. The flexible Virtela cloud-ready-network solution enhances both types of branchoffice network environments: Enterprises with no existing Internet VPN connections Virtela can supply local Internet connectivity combined with various cloud-based network services to enforce security policies and improve application performance Global enterprises with existing primary and Internet VPN backup circuits at remote offices Virtela can segment and secure Internet traffic via the backup circuit with intelligent routing and cloud-based security services, plus supply local Internet connectivity Virtela offers additional options for improving service delivery and application performance: Hybrid network design Utilizing Internet VPN circuits combined with the Virtela global network for improved service delivery in long-haul transport (versus using the Internet end to end) Cloud-based Application Acceleration Enhanced performance for cloud and corporate applications with the Virtela Cloud-based Application Acceleration service VIRTELA ENTERPRISE SERVICES CLOUD Virtela s cloud-ready network solution is made possible by Virtela ESC, which includes Local Cloud Centers (LCCs) strategically located around the world. Virtela ESC s built-in network virtualization was developed using Virtela s advanced software-defined network (SDN) technologies, which free global enterprises from the need to deploy IT infrastructure at each branch office.
11 Cloud-Ready Network for Branch Offices 9 Virtela s Virtualized Overlay Network integrates more than 1,000 of the bestperforming local and regional providers, and Virtela partners with countless ISPs globally, offering coverage in 1 million cities across more than 190 countries. Therefore, Virtela can deliver fully managed local Internet access through Virtela-provisioned or customer-available Internet connections and ESC VPN tunnels to branch-office employees anywhere in the world, securely via cloudbased or premises-based managed security. Virtela connects each branch office to the Virtela LCC in that region, utilizing local Internet connections and a secure VPN tunnel (see Figure 3). Routing decisions within the Virtela LCC will dynamically determine the optimal route to connect user requests to the resources they require, accessible via the Internet or Virtela ESC services network. U.S.-Based SaaS Provider Hong Kong Branch Office San Francisco Corporate Headquarters Internet Singapore SaaS Provider San Francisco Hong Kong LCC Remote SaaS or Data Center LCC Local SaaS Virtela ESC Local Cloud Centers Globally Figure 3. The Virtela Cloud- Ready Network. Flexibility to Meet Unique Branch-Office Requirements Virtela can localize SaaS services, as well as transport non-local services via the Virtela private network: A Hong Kong branch office accesses Internet, SaaS and corporate data center services via a secure VPN tunnel Internet SaaS requests are routed in region with locally enforced security policy to the Singapore SaaS provider and Internet services U.S.-based WAN backup and U.S.-based SaaS traffic is routed via Virtela s MPLS backbone and secure VPN tunnels Virtela ESC enables branch offices to easily and cost-effectively use the Internet as a private WAN, giving employees everywhere high-performance access to the applications and data they need to perform their jobs. It also allows a smooth transition to other cloud-based services from Virtela, such as Virtela Application Acceleration.
12 Cloud-Ready Network for Branch Offices 10 BENEFITS Virtela s cloud-ready network offers significant benefits for branch-office users and CIOs alike. John Katsaros, founder of the Internet Research Group and author of The 2013 Branch Office IT Market Report, stresses that because branch offices are the core of most businesses, branch-office IT is more important than ever: Enterprises need to assure excellent application service to the branch office while at the same time simplifying and cost-reducing IT. 10 InformationWeek interviewed 315 IT professionals in its Next-Generation WAN Survey: 69% believe their WAN bandwidth requirements will increase in the next 2 years. Despite these predictions, 44% say they want to make WAN upgrades but cannot afford to make a largescale infrastructure change. 11 The Virtela solution delivers: It enhances the end-user experience, reduces IT costs, alleviates management and billing complexity, provides groundbreaking cloud-based security 24x7, and creates a pathway to the cloud and increasingly available cloud-based applications. THE PAYOFF FOR BRANCH-OFFICE USERS AND ENTERPRISE CIOS Cloud Enterprises that lack the optimized network infrastructure to effectively access cloud applications and services miss out on valuable opportunities to simplify IT, reduce costs and improve the end-user experience. In its Next-Generation WAN Survey, InformationWeek sums up an important change in the WAN landscape: Public cloud services demand the WAN shift from a conventional hub-and-spoke design to a distributed model, where services are delivered over Internet connections at each location, thus reducing the load over the corporate backbone. 12 Virtela s cloud-ready network architecture speeds access to SaaS applications and other cloud solutions typically with zero upfront capex. A more widely distributed Internet gateway infrastructure ensures lowerlatency access to cloud applications for branch-office and remote users. End-user Experience The Virtela solution reduces the latency and performance issues that branch-office employees experience as the result of backhauling Internet traffic to a centrally deployed Internet gateway. The solution improves the performance of business applications, systems and other applications traveling the WAN, speeds access to Internet sites and enhances the delivery of SaaS applications, improving the end-user experience for branch office staffs and remote workers.
13 Cloud-Ready Network for Branch Offices 11 By peering with local ISPs, Virtela improves application performance. Virtela s cloud-ready network enhances communications and collaboration mechanisms such as and file sharing between branch offices and partners in the same region because both are connected to the same local ISP, plus users enjoy a local Internet experience. Costs By moving Internet traffic off of the WAN and localizing connectivity, the Virtela solution eliminates the need to invest in MPLS upgrades and expand Internet capacity. Companies no longer have to pay expensive managed service rates to backhaul Internet traffic just to provide branchoffice employees Internet access. In addition, Internet VPN backup circuits installed at branch offices to provide network redundancy no longer sit idle, increasing the ROI on network investments. Virtela s solution lowers networking costs at branch-office sites by eliminating the need to deploy, manage and maintain a network infrastructure. Enterprises gain proven cloud-based security without having to invest in on-premise security devices. Operating costs are reduced with the Virtela team managing the branch-office network environment 24x7. Management By reducing network management time, the solution enables IT resources to focus on strategic activities such as leveraging the latest technologies to improve branch-office operations. Enterprises benefit from a streamlined, highly reliable support environment by dealing with a single provider s support organization: Virtela s award-winning, highly proactive customer support team. Virtela s single contract, single SLA and billing consolidation alleviate the costs and management time required when dealing with numerous service providers and dozens of ISPs globally. Security The Virtela solution directs branch-office Internet traffic through the nearest LCC to the local Internet. Virtela s highly distributed network of LCCs ensures security at the network edge. Virtela has the flexibility and expertise to align with a company s security policies and has technology partnerships with today s leading network security equipment vendors. Virtela can virtualize premise-based security devices by installing security equipment in the LCCs that mirrors a company s security policies, distributing the logical intelligence of their security program into multiple LCCs worldwide. Virtela s model allows network-based security policies and services, unlike the typical service provider that often requires companies to house a security device on premise at the branch office. This alleviates IT from having to install, manage and monitor the security equipment.
14 Cloud-Ready Network for Branch Offices 12 CONCLUSION Branch offices, sales offices, manufacturing plants, distribution centers and remote workers scattered around the globe are central to the success of enterprise organizations. Globalization, the explosion of Internet usage, legacy security strategies and the limitations of traditional network service providers no longer have to burden the distributed workforce day after day by impacting the performance of mission-critical WAN and cloud applications. IDC forecasts that Internet traffic on fixed networks will continue to grow, increasing approximately 50% year over year. 13 Instead of backhauling Internet traffic to the data center just to provide Internet access to branch-office employees, CIOs can cost-effectively and securely transition their branch offices to a next-generation WAN architecture with the help of Virtela s cloud-ready network solution. Virtela helps multinational enterprises transform the network into a high-performance, flexible, resilient architecture and radically change the experience and economics of emerging Internet and cloud applications. REFERENCES 1. ZK Research, 5 Reasons IT Should Choose a Hosted UC Solution, Network World, February 2013, 2. Jim Metzler, The 2012 Cloud Networking Report, Ashton Metzler & Assoc., December Akamai Technologies, Inc., The State of the Internet, Cisco, Cisco Visual Networking Index: Forecast and Methodology, , May Cisco, Cisco Visual Networking Index: Forecast and Methodology, , May Metzler, The 2012 Cloud Networking Report. 7. ESG Research, Remote Office/Branch Office Technology Trends, July ipass Inc., The Next Generation Network: Why the Distributed Enterprise Should Consider Multi-circuit WAN VPN Solutions versus Traditional MPLS, Gartner, Inc., Gartner s Market Trends: SaaS s Varied levels of Cannibalization to On-Premises Applications, October John Katsaros, The 2013 Branch Office IT Market Landscape Report, Internet Research Group, January Greg Ferro, The Next-Generation WAN, InformationWeek, September Ferro, The Next-Generation WAN. 13. IDC, Worldwide Internet Broadband Bandwidth Demand Forecast, February 2012.
15 Virtela Technology Services Incorporated is the smart alternative to traditional global carriers and equipment vendors for enterprise networking and virtualized IT services. Recognized by more than 100 awards for outstanding service innovation and customer support, Virtela s services suite includes global managed networks, remote access, security, application acceleration, mobile device management and IT infrastructure management. Call us at +1 (720) or visit us online at to learn how we can transform your enterprise network Virtela Technology Services Incorporated.
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