Welcome!

@BigDataExpo Authors: Yeshim Deniz, Liz McMillan, Elizabeth White, Pat Romanski, William Schmarzo

Related Topics: SDN Journal, Java IoT, Microservices Expo, Containers Expo Blog, @CloudExpo, @BigDataExpo

SDN Journal: Article

Using OpenFlow to Extend Software Defined Networking

OpenFlow’s Role in One-Stop Shopping for Control of Enterprise Cloud, Storage and Network Resources

Using OpenFlow to extend software-defined networking (SDN) to the optical layer is a compelling prospect for enterprises seeking to achieve joint orchestration of information technology (IT) and network resources for cloud services, to virtualize the network and to more simply manage interconnections of distributed data centers that require synchronization.

Today's fragmented, specialized management and control approaches are fraught with proprietary protocols and management systems, limited scalability and configuration complexities. With an OpenFlow-enabled transport network, an enterprise could instead engage in a kind of "one-stop shopping" for control of cloud computing, storage and networking resources - all via one, unified application programming interface (API). The benefits could include significantly simplified configuration, management and scaling of large-scale enterprise infrastructures through integration and automation.

That's a new role for OpenFlow, demanding strategic tailoring of the protocol for the optical transport domain. Demonstration and development of the capability are closely watched by enterprises that are under incessant pressure to cost-effectively meet ever-increasing demand for bandwidth and services.

Virtualization's New Frontier
Servers and storage have been virtualized in the enterprise; the next great frontier for virtualization is the network.

Because of the substantial cost savings and performance benefits that it can deliver, SDN-based virtualization is of prime interest to enterprises for a wide range of applications. OpenFlow has emerged as one of the most popular SDN protocols. Web 2.0 network operators and national research and education network (NREN) operators, especially, like OpenFlow.

With OpenFlow, an abstraction of the network's packet switches can be generated and flow-forwarding behavior can be specified across an infrastructure via an external controller. Operations can be substantially automated and streamlined by breaking up the monolithically integrated control and forwarding paradigm of today's switches.

Using OpenFlow, could SDN be extended across layers and create a scenario in which - with a single instruction - the controller could jointly create virtual machines and enable enterprise network administrators to reserve computing, networking and storage resources in one stroke?

It is an obviously compelling notion for enterprise network staffs who desperately need to simplify operations. However, the problem is OpenFlow deployment and development has largely been limited to the electrical packet layer, whereas the interconnection beyond the data center is typically comprised of optical transport technology. Furthermore, the optical domain is where things get hazy for many enterprise network administrators. Their comfort zone tends to be packets - not wavelengths and optics.

The result is that cloud computing is currently decoupled from the transport networking control and operation. The network exists as a static, separated entity in today's cloud implementations. There is no interaction between cloud computing processes and the statically configured network. The two are not in any way interoperable; they speak different languages.

Converging cloud computing and networking requires a more dynamic mode of control and operation, but enterprises largely have judged integrating management of the optical network into the data-center environment to be too complex.

To extend OpenFlow from its established role in the electrical packet domain to the optical layer (and, thereby, extend SDN across multiple network layers), a range of optical-specific concerns must be tackled.

Crafting and Experimenting
Within the European Commission's FP7 ICT Work Programme is a collaborative project, "OpenFlow in Europe - Linking Infrastructure and Applications" (OFELIA), that provides researchers with a test bed in which to experiment with SDN applications and virtual multi-layer networks over shared network infrastructure.

Via standardized, secure interfaces through GÉANT, a high-bandwidth interconnection of European R&E networks, researchers develop, run and control experiments using packet switches and application servers at the University of Essex and seven other test-bed facilities throughout Europe.

OFELIA hosts a prototype implementation of dynamic control of wavelength-switched optical networks via OpenFlow. Bandwidth, latency and power consumption can be adjusted to meet the specific requirements of specific applications.

To make it happen, key OpenFlow additions had to be engineered in order for the protocol to effectively control the optical domain. Optical-specific considerations were required to adapt OpenFlow from the packet world. A packet can travel from any ingress to any egress port in an electrical switch or from any time slot in a time-division multiplexing (TDM) device. The optical domain, however, introduces strict switching constraints, with regard to wavelength continuity, optical impairments, optical power leveling on the line side, etc.

Augmenting OpenFlow to address those optical-specific concerns has resulted in an OFELIA prototype that demonstrates a truly transparent, wavelength-switched optical network. The research community is able to experiment with the capability via a flexible, Web-services approach; commercial enterprises, too, are interested in trialing the capability for their specific applications and environments.

OpenFlow is not sufficient in itself to enable the complete transformation that enterprise network administrators envision, to SDN-enable virtualization across all layers of their infrastructures. The additions to OpenFlow that were engineered for the OFELIA test bed provide only the bridge between the optical layer and packet layer and allow integration into a cloud operating system such as OpenStack.

But that is one very important bridge, and the promise for enterprise network administrators is considerable. The OpenFlow innovation could seamlessly integrate the optical transport network under a common management umbrella with an enterprise's routers and switches - all via one familiar interface. Management of the optical domain could become as simple as the management of Ethernet boxes - using an encapsulation of virtual resources that enterprise network administrators could manage via typical and familiar infrastructure. That's a significant breakthrough. With many enterprises already considering usage of an OpenFlow-based control for their packet networks, extending the framework to the wavelength-switched optical layer would be a natural migration.

Virtualization has developed over phases in enterprise networking. First, resource virtualization inside data centers delivered economic savings through enhanced utilization, scalability and redundancy. Data-center virtualization conveyed greater infrastructure flexibility, higher availability and better workload balancing. The next frontier, network virtualization, promises true platform agility and, with it, a host of long-sought-after enterprise capabilities: capacity on-demand, adaptive infrastructure and dynamic service automation, among them. Adapting OpenFlow and extending SDN to the optical transport domain comprise an important step toward that vision.

More Stories By Jörg-Peter Elbers

Jörg-Peter Elbers is VP Advanced Technology in the CTO office at ADVA Optical Networking in Munich, Germany, and is globally responsible for technology strategy, new product concepts, standardization, and research activities.

Prior to joining ADVA in 2007, he was Director of Technology in the Optical Product Unit of Marconi (now Ericsson). From 1999 to 2001, he worked at Siemens AG, last as Director of Network Architecture in Siemens Optical Networks.

More Stories By Achim Autenrieth

Achim Autenrieth is Principle Research Engineer Advanced Technology in the CTO Office at ADVA Optical Networking, where he is working on the design and evaluation of multilayer networks, control plane, and SDN concepts. Achim is a member of IEEE and VDE/ITG, he authored or co-authored more than 70 reviewed and invited scientific publications and he is technical program committee member of ECOC, DRCN, and RNDM.

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


@BigDataExpo Stories
SYS-CON Events announced today that Dasher Technologies will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. Dasher Technologies, Inc. ® is a premier IT solution provider that delivers expert technical resources along with trusted account executives to architect and deliver complete IT solutions and services to help our clients execute their goals, plans and objectives. Since 1999, we'v...
As popularity of the smart home is growing and continues to go mainstream, technological factors play a greater role. The IoT protocol houses the interoperability battery consumption, security, and configuration of a smart home device, and it can be difficult for companies to choose the right kind for their product. For both DIY and professionally installed smart homes, developers need to consider each of these elements for their product to be successful in the market and current smart homes.
The session is centered around the tracing of systems on cloud using technologies like ebpf. The goal is to talk about what this technology is all about and what purpose it serves. In his session at 21st Cloud Expo, Shashank Jain, Development Architect at SAP, will touch upon concepts of observability in the cloud and also some of the challenges we have. Generally most cloud-based monitoring tools capture details at a very granular level. To troubleshoot problems this might not be good enough.
SYS-CON Events announced today that MIRAI Inc. will exhibit at the Japan External Trade Organization (JETRO) Pavilion at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 – Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MIRAI Inc. are IT consultants from the public sector whose mission is to solve social issues by technology and innovation and to create a meaningful future for people.
Transforming cloud-based data into a reportable format can be a very expensive, time-intensive and complex operation. As a SaaS platform with more than 30 million global users, Cornerstone OnDemand’s challenge was to create a scalable solution that would improve the time it took customers to access their user data. Our Real-Time Data Warehouse (RTDW) process vastly reduced data time-to-availability from 24 hours to just 10 minutes. In his session at 21st Cloud Expo, Mark Goldin, Chief Technolo...
Companies are harnessing data in ways we once associated with science fiction. Analysts have access to a plethora of visualization and reporting tools, but considering the vast amount of data businesses collect and limitations of CPUs, end users are forced to design their structures and systems with limitations. Until now. As the cloud toolkit to analyze data has evolved, GPUs have stepped in to massively parallel SQL, visualization and machine learning.
SYS-CON Events announced today that Massive Networks, that helps your business operate seamlessly with fast, reliable, and secure internet and network solutions, has been named "Exhibitor" of SYS-CON's 21st International Cloud Expo ®, which will take place on Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. As a premier telecommunications provider, Massive Networks is headquartered out of Louisville, Colorado. With years of experience under their belt, their team of...
SYS-CON Events announced today that TidalScale, a leading provider of systems and services, will exhibit at SYS-CON's 21st International Cloud Expo®, which will take place on Oct 31 - Nov 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. TidalScale has been involved in shaping the computing landscape. They've designed, developed and deployed some of the most important and successful systems and services in the history of the computing industry - internet, Ethernet, operating s...
Though cloud is the future of enterprise computing, a smooth transition of legacy applications and systems is critical for seamless business operations. IT professionals are eager to start leveraging the cost, scale and other benefits of cloud, but with massive investments already in place in existing infrastructure and a number of compliance and resource hurdles, it can be challenging to move to a cloud-based infrastructure.
In his general session at 21st Cloud Expo, Greg Dumas, Calligo’s Vice President and G.M. of US operations, will go over the new Global Data Protection Regulation and how Calligo can help business stay compliant in digitally globalized world. Greg Dumas is Calligo's Vice President and G.M. of US operations. Calligo is an established service provider that provides an innovative platform for trusted cloud solutions. Calligo’s customers are typically most concerned about GDPR compliance, applicatio...
Coca-Cola’s Google powered digital signage system lays the groundwork for a more valuable connection between Coke and its customers. Digital signs pair software with high-resolution displays so that a message can be changed instantly based on what the operator wants to communicate or sell. In their Day 3 Keynote at 21st Cloud Expo, Greg Chambers, Global Group Director, Digital Innovation, Coca-Cola, and Vidya Nagarajan, a Senior Product Manager at Google, will discuss how from store operations...
In a recent survey, Sumo Logic surveyed 1,500 customers who employ cloud services such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP). According to the survey, a quarter of the respondents have already deployed Docker containers and nearly as many (23 percent) are employing the AWS Lambda serverless computing framework. It’s clear: serverless is here to stay. The adoption does come with some needed changes, within both application development and operations. Tha...
SYS-CON Events announced today that IBM has been named “Diamond Sponsor” of SYS-CON's 21st Cloud Expo, which will take place on October 31 through November 2nd 2017 at the Santa Clara Convention Center in Santa Clara, California.
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, will lead you through the exciting evolution of the cloud. He'll look at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering ...
In his session at 21st Cloud Expo, Michael Burley, a Senior Business Development Executive in IT Services at NetApp, will describe how NetApp designed a three-year program of work to migrate 25PB of a major telco's enterprise data to a new STaaS platform, and then secured a long-term contract to manage and operate the platform. This significant program blended the best of NetApp’s solutions and services capabilities to enable this telco’s successful adoption of private cloud storage and launchi...
Infoblox delivers Actionable Network Intelligence to enterprise, government, and service provider customers around the world. They are the industry leader in DNS, DHCP, and IP address management, the category known as DDI. We empower thousands of organizations to control and secure their networks from the core-enabling them to increase efficiency and visibility, improve customer service, and meet compliance requirements.
Join IBM November 1 at 21st Cloud Expo at the Santa Clara Convention Center in Santa Clara, CA, and learn how IBM Watson can bring cognitive services and AI to intelligent, unmanned systems. Cognitive analysis impacts today’s systems with unparalleled ability that were previously available only to manned, back-end operations. Thanks to cloud processing, IBM Watson can bring cognitive services and AI to intelligent, unmanned systems. Imagine a robot vacuum that becomes your personal assistant tha...
Gemini is Yahoo’s native and search advertising platform. To ensure the quality of a complex distributed system that spans multiple products and components and across various desktop websites and mobile app and web experiences – both Yahoo owned and operated and third-party syndication (supply), with complex interaction with more than a billion users and numerous advertisers globally (demand) – it becomes imperative to automate a set of end-to-end tests 24x7 to detect bugs and regression. In th...
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend 21st Cloud Expo October 31 - November 2, 2017, at the Santa Clara Convention Center, CA, and June 12-14, 2018, at the Javits Center in New York City, NY, and learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
Digital transformation is changing the face of business. The IDC predicts that enterprises will commit to a massive new scale of digital transformation, to stake out leadership positions in the "digital transformation economy." Accordingly, attendees at the upcoming Cloud Expo | @ThingsExpo at the Santa Clara Convention Center in Santa Clara, CA, Oct 31-Nov 2, will find fresh new content in a new track called Enterprise Cloud & Digital Transformation.