Click here to close now.

Welcome!

Big Data Journal Authors: Liz McMillan, Pat Romanski, Elizabeth White, Esmeralda Swartz, Adrian Bridgwater

Related Topics: SDN Journal, Java, MICROSERVICES, Virtualization, Cloud Expo, Big Data Journal

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 QTS Realty Trust, one of the nation’s largest and fastest-growing providers of data center facilities and cloud services and a leader in security and compliance, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. QTS Realty Trust, Inc. (NYSE: QTS) is a leading national provider of data center solutions and fully managed services, and a leader in security and compliance...
SYS-CON Events announced today that Solgenia will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Solgenia is the global market leader in Cloud Collaboration and Cloud Infrastructure software solutions. Designed to “Bridge the Gap” between Personal and Professional S...
SYS-CON Events announced today that Liaison Technologies, a leading provider of data management and integration cloud services and solutions, has been named "Silver Sponsor" of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York, NY. Liaison Technologies is a recognized market leader in providing cloud-enabled data integration and data management solutions to break down complex information barriers, enabling enterprises to make sm...
The 3rd International Internet of @ThingsExpo, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that its Call for Papers is open. The Internet of Things (IoT) is the biggest idea since the creation of the Worldwide Web more than 20 years ago.
SYS-CON Events announced today that CommVault has been named “Bronze Sponsor” of SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY, and the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. A singular vision – a belief in a better way to address current and future data management needs – guides CommVault in the development of Singular In...
Cloud is not a commodity. And no matter what you call it, computing doesn’t come out of the sky. It comes from physical hardware inside brick and mortar facilities connected by hundreds of miles of networking cable. And no two clouds are built the same way. SoftLayer gives you the highest performing cloud infrastructure available. One platform that takes data centers around the world that are full of the widest range of cloud computing options, and then integrates and automates everything. J...
SYS-CON Media announced today that 9 out of 10 " most read" DevOps articles are published by @DevOpsSummit Blog. Launched in October 2014, @DevOpsSummit Blog offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dy...
In the midst of the widespread popularity and adoption of cloud computing, it seems like everything is being offered “as a Service” these days: Infrastructure? Check. Platform? You bet. Software? Absolutely. Toaster? It’s only a matter of time. With service providers positioning vastly differing offerings under a generic “cloud” umbrella, it’s all too easy to get confused about what’s actually being offered. In his session at 16th Cloud Expo, Kevin Hazard, Director of Digital Content for SoftL...
The list of ‘new paradigm’ technologies that now surrounds us appears to be at an all time high. From cloud computing and Big Data analytics to Bring Your Own Device (BYOD) and the Internet of Things (IoT), today we have to deal with what the industry likes to call ‘paradigm shifts’ at every level of IT. This is disruption; of course, we understand that – change is almost always disruptive.
The world's leading Cloud event, Cloud Expo has launched Microservices Journal on the SYS-CON.com portal, featuring over 19,000 original articles, news stories, features, and blog entries. DevOps Journal is focused on this critical enterprise IT topic in the world of cloud computing. Microservices Journal offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. Follow new article posts on T...
SYS-CON Events announced today that Site24x7, the cloud infrastructure monitoring service, will exhibit at SYS-CON's 16th International Cloud Expo®, which will take place on June 9-11, 2015, at the Javits Center in New York City, NY. Site24x7 is a cloud infrastructure monitoring service that helps monitor the uptime and performance of websites, online applications, servers, mobile websites and custom APIs. The monitoring is done from 50+ locations across the world and from various wireless carr...
After making a doctor’s appointment via your mobile device, you receive a calendar invite. The day of your appointment, you get a reminder with the doctor’s location and contact information. As you enter the doctor’s exam room, the medical team is equipped with the latest tablet containing your medical history – he or she makes real time updates to your medical file. At the end of your visit, you receive an electronic prescription to your preferred pharmacy and can schedule your next appointment...
SYS-CON Events announced today that SafeLogic has been named “Bag Sponsor” of SYS-CON's 16th International Cloud Expo® New York, which will take place June 9-11, 2015, at the Javits Center in New York City, NY. SafeLogic provides security products for applications in mobile and server/appliance environments. SafeLogic’s flagship product CryptoComply is a FIPS 140-2 validated cryptographic engine designed to secure data on servers, workstations, appliances, mobile devices, and in the Cloud....
Countless business models have spawned from the IaaS industry. Resell Web hosting, blogs, public cloud, and on and on. With the overwhelming amount of tools available to us, it's sometimes easy to overlook that many of them are just new skins of resources we've had for a long time. In his General Session at 16th Cloud Expo, Phil Jackson, Lead Developer Advocate at SoftLayer, will break down what we've got to work with and discuss the benefits and pitfalls to discover how we can best use them t...
Technology today seems to be moving at breakneck speeds. This speed of change is creating tectonic shifts in how businesses operate and leverage technology to achieve their goals. The convergence of key disruptive technologies (i.e., social, mobile, analytics, and cloud) is what Gartner refers to as the nexus of forces. Cloud is an underpinning of this nexus. How is this disruption impacting the CIO? Does the role change in the face of all these forces, or is it just a continuation of what the C...
There is little doubt that Big Data solutions will have an increasing role in the Enterprise IT mainstream over time. 7th International Big Data Expo, co-located with 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - has announced its Call for Papers is open. As advanced data storage, access and analytics technologies aimed at handling high-volume and/or fast moving data all move center stage, aided by the cloud computing boom, Big Data Expo...
SYS-CON Events announced today the IoT Bootcamp – Jumpstart Your IoT Strategy, being held June 9–10, 2015, in conjunction with 16th Cloud Expo and Internet of @ThingsExpo at the Javits Center in New York City. This is your chance to jumpstart your IoT strategy. Combined with real-world scenarios and use cases, the IoT Bootcamp is not just based on presentations but includes hands-on demos and walkthroughs. We will introduce you to a variety of Do-It-Yourself IoT platforms including Arduino, Ras...
Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities. Accordingly, attendees at the upcoming 16th Cloud Expo at the Javits Center in New York June 9-11 will find fresh new content in a new track called PaaS | Containers & Microservices Containers are not being considered for the first time by the cloud community, but a current era of re-consideration has pushed them to the top of the cloud agenda. With the launch ...
When it comes to building applications, one database definitely does not fit all. Traditional SQL databases are great for storing highly structured, normalized data and performing analytics and reporting. NoSQL has attracted developers with its awesome flexibility, and JSON-centric document stores like Cloudant make web developers incredibly productive by offering a JavaScript environment from end-to-end. Recent Big Data challenges have driven the need for a distributed approach to analytics e...
SOA Software has changed its name to Akana. With roots in Web Services and SOA Governance, Akana has established itself as a leader in API Management and is expanding into cloud integration as an alternative to the traditional heavyweight enterprise service bus (ESB). The company recently announced that it achieved more than 90% year-over-year growth. As Akana, the company now addresses the evolution and diversification of SOA, unifying security, management, and DevOps across SOA, APIs, microser...