Welcome!

Containers Expo Blog Authors: Flint Brenton, Anders Wallgren, Elizabeth White, Pat Romanski, Derek Weeks

Related Topics: SDN Journal

SDN Journal: Blog Feed Post

F5 Application Layer SDN: Now with Extreme Programmability

As you move up the network stack, you move from directing packets to managing flows

"If you look at the standard SDN model, [Layer 4-7 services] are applications that can basically run on the [SDN] controller platform. But that's not the only way to do them. We'll hear about different approaches. Network services for SDN are going to be a big story in 2013."

-- Brad Casemore, "Networking outlook: Controllers, Layer 4-7 will roil SDN 2013 market" [emphasis mine]

Since SDN became the darling du jour of the networking industry, there's been a lot of head nodding and ancillary mention of L4-7 services eventually becoming part of the overall fabric. What there hasn't been is a lot of discussion on the challenges inherent in bringing those services to bear in what has become the de facto standard model: a centralized controller responsible for directing the flow of packets throughout the network.

That's challenging, because as you move up the network stack there's a natural evolution that occurs. You move from directing packets to managing flows, and managing flows requires a completely different set of features. That's because the closer to layer 7 you get, the more stateful the network necessarily must become. It can no longer act on individual packets; it must aggregate those packets and it must do it often - far more often than is presupposed when working at layer 2 and 3 of the network stack.

John Giacomoni said it well when he explained in a recent post, "Beyond SDN Fabric: Complex problems require L7+ SDN technologies":

“To implement even basic load balancing with OpenFlow the majority of packets, and all ACKs in particular, need to be forwarded to the controller so session flow state can be accurately tracked.”

Consider that in a router, about 1 in every 1 million packets needs to be forwarded to the controller. In a switch, that ratio is on the order of 1 in every 1 billion. For TCP that ratio drops to a mere 1 out of every 10 packets. If you climb a bit higher in the network stack to layer 7, you might as well consider every packet a candidate to be forwarded on to the controller.

The SDN model upon which most solutions today are based work on the assumption that most packets don't need to be examined by the controller. Thus they are able to scale and maintain wire speed while adding agility and programmability to the lower layers of the network.

A different model is required for Application Layer SDN to ensure agility and performance can be maintained while gaining the benefits of application intelligence and programmability. The SDN Network Fabric (layer 2-3) operates on the premise of centralized control and execution. The SDN Application Services Fabric (layer 4-7) must operate on the premise of centralized control and decentralized execution in order to scale without sacrificing the many benefits of stateful network devices enjoyed by current models of network architecture such as security-related functions, fault tolerance and isolation, and performance enhancing services.

Extreme Programmability: Enter LineRate Systems

As SDN matures, its focus will continue to move up the network stack, toward the application layers. The programmable, scalable services at the application layer comprising the Application Services Fabric are necessary to fully realize the benefits of SDN and software-defined data centers, particularly in environments where network function virtualization (NFV) is adopted as a strategy to achieve maximum agility. Network function virtualization requires not only the improved performance of today’s modern x86 hardware platforms, but software capable of scaling on demand while maintaining optimal performance and offering a high-degree of programmability for superior software defined control over the network.

Programmability is required for reducing operational costs through automation and centralized control, but it is also needed to enable customers to develop innovative, application-specific services that work in concert with SDN architectures. Critical to the success of these architectures are security, acceleration, optimization, and routing services at the application layers that are able to meet modern expectations of flexibility, scale, and performance.

LineRate brings a programmable, scalable platform to the Application Layer SDN table. Its platform is not only capable of scaling on demand and meeting performance expectations on commoditized x86 hardware, but it is highly programmable. In fact it is designed specifically to be programmed to execute purpose-built business and operational logic at high speeds. It's a proxy-based architecture, similar to that of F5 BIG-IP, and offers what I can only describe as "extreme programmability" as its core capability. Rather than insert lightweight rules into the data plane as is the operating procedure for SDN L2-3 fabrics, LineRate SDN Services act as independently operating service nodes that maintain the scaling properties expected of SDN solutions and of modern high-availability architectures, i.e. unlike the centralized SDN controller architecture, a decentralized execution model is fault tolerant even when maintaining state, a requirement for the Application Services Fabric.

As networks continue to become commoditized, it is the application layer services in an SDN that will provide organizations with the competitive advantage they need. A programmable data path is required for organizations desiring to roll their own services and it must be scalable and fast; organizations are unwilling (and rightfully so) to sacrifice performance. LineRate Systems offers such a platform and its addition to the F5 portfolio expands F5's continued leadership in application layer networking in both traditional and Application Layer SDN architectures.

Read the original blog entry...

More Stories By Lori MacVittie

Lori MacVittie is responsible for education and evangelism of application services available across F5’s entire product suite. Her role includes authorship of technical materials and participation in a number of community-based forums and industry standards organizations, among other efforts. MacVittie has extensive programming experience as an application architect, as well as network and systems development and administration expertise. Prior to joining F5, MacVittie was an award-winning Senior Technology Editor at Network Computing Magazine, where she conducted product research and evaluation focused on integration with application and network architectures, and authored articles on a variety of topics aimed at IT professionals. Her most recent area of focus included SOA-related products and architectures. She holds a B.S. in Information and Computing Science from the University of Wisconsin at Green Bay, and an M.S. in Computer Science from Nova Southeastern University.

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.


@ThingsExpo Stories
You think you know what’s in your data. But do you? Most organizations are now aware of the business intelligence represented by their data. Data science stands to take this to a level you never thought of – literally. The techniques of data science, when used with the capabilities of Big Data technologies, can make connections you had not yet imagined, helping you discover new insights and ask new questions of your data. In his session at @ThingsExpo, Sarbjit Sarkaria, data science team lead ...
The IoT has the potential to create a renaissance of manufacturing in the US and elsewhere. In his session at 18th Cloud Expo, Florent Solt, CTO and chief architect of Netvibes, will discuss how the expected exponential increase in the amount of data that will be processed, transported, stored, and accessed means there will be a huge demand for smart technologies to deliver it. Florent Solt is the CTO and chief architect of Netvibes. Prior to joining Netvibes in 2007, he co-founded Rift Technol...
Join IBM June 8 at 18th Cloud Expo at the Javits Center in New York City, NY, and learn how to innovate like a startup and scale for the enterprise. You need to deliver quality applications faster and cheaper, attract and retain customers with an engaging experience across devices, and seamlessly integrate your enterprise systems. And you can't take 12 months to do it.
Machine Learning helps make complex systems more efficient. By applying advanced Machine Learning techniques such as Cognitive Fingerprinting, wind project operators can utilize these tools to learn from collected data, detect regular patterns, and optimize their own operations. In his session at 18th Cloud Expo, Stuart Gillen, Director of Business Development at SparkCognition, will discuss how research has demonstrated the value of Machine Learning in delivering next generation analytics to im...
This is not a small hotel event. It is also not a big vendor party where politicians and entertainers are more important than real content. This is Cloud Expo, the world's longest-running conference and exhibition focused on Cloud Computing and all that it entails. If you want serious presentations and valuable insight about Cloud Computing for three straight days, then register now for Cloud Expo.
So, you bought into the current machine learning craze and went on to collect millions/billions of records from this promising new data source. Now, what do you do with them? Too often, the abundance of data quickly turns into an abundance of problems. How do you extract that "magic essence" from your data without falling into the common pitfalls? In her session at @ThingsExpo, Natalia Ponomareva, Software Engineer at Google, will provide tips on how to be successful in large scale machine lear...
IoT device adoption is growing at staggering rates, and with it comes opportunity for developers to meet consumer demand for an ever more connected world. Wireless communication is the key part of the encompassing components of any IoT device. Wireless connectivity enhances the device utility at the expense of ease of use and deployment challenges. Since connectivity is fundamental for IoT device development, engineers must understand how to overcome the hurdles inherent in incorporating multipl...
The IETF draft standard for M2M certificates is a security solution specifically designed for the demanding needs of IoT/M2M applications. In his session at @ThingsExpo, Brian Romansky, VP of Strategic Technology at TrustPoint Innovation, will explain how M2M certificates can efficiently enable confidentiality, integrity, and authenticity on highly constrained devices.
The paradigm has shifted. A Gartner survey shows that 43% of organizations are using or plan to implement the Internet of Things in 2016. However, not just a handful of companies are still using the old-style ad-hoc trial-and-error ways, unaware of the critical barriers, paint points, traps, and hidden roadblocks. How can you become a winner? In his session at @ThingsExpo, Tony Shan will present a methodical approach to guide the holistic adoption and enablement of IoT implementations. This ov...
We’ve worked with dozens of early adopters across numerous industries and will debunk common misperceptions, which starts with understanding that many of the connected products we’ll use over the next 5 years are already products, they’re just not yet connected. With an IoT product, time-in-market provides much more essential feedback than ever before. Innovation comes from what you do with the data that the connected product provides in order to enhance the customer experience and optimize busi...
Artificial Intelligence has the potential to massively disrupt IoT. In his session at 18th Cloud Expo, AJ Abdallat, CEO of Beyond AI, will discuss what the five main drivers are in Artificial Intelligence that could shape the future of the Internet of Things. AJ Abdallat is CEO of Beyond AI. He has over 20 years of management experience in the fields of artificial intelligence, sensors, instruments, devices and software for telecommunications, life sciences, environmental monitoring, process...
SYS-CON Events announced today that Ericsson has been named “Gold Sponsor” of SYS-CON's @ThingsExpo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. Ericsson is a world leader in the rapidly changing environment of communications technology – providing equipment, software and services to enable transformation through mobility. Some 40 percent of global mobile traffic runs through networks we have supplied. More than 1 billion subscribers around the world re...
SYS-CON Events announced today that Stratoscale, the software company developing the next generation data center operating system, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. Stratoscale is revolutionizing the data center with a zero-to-cloud-in-minutes solution. With Stratoscale’s hardware-agnostic, Software Defined Data Center (SDDC) solution to store everything, run anything and scale everywhere...
Angular 2 is a complete re-write of the popular framework AngularJS. Programming in Angular 2 is greatly simplified – now it's a component-based well-performing framework. This immersive one-day workshop at 18th Cloud Expo, led by Yakov Fain, a Java Champion and a co-founder of the IT consultancy Farata Systems and the product company SuranceBay, will provide you with everything you wanted to know about Angular 2.
SYS-CON Events announced today that Men & Mice, the leading global provider of DNS, DHCP and IP address management overlay solutions, will exhibit at SYS-CON's 18th International Cloud Expo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. The Men & Mice Suite overlay solution is already known for its powerful application in heterogeneous operating environments, enabling enterprises to scale without fuss. Building on a solid range of diverse platform support,...
In his session at @ThingsExpo, Chris Klein, CEO and Co-founder of Rachio, will discuss next generation communities that are using IoT to create more sustainable, intelligent communities. One example is Sterling Ranch, a 10,000 home development that – with the help of Siemens – will integrate IoT technology into the community to provide residents with energy and water savings as well as intelligent security. Everything from stop lights to sprinkler systems to building infrastructures will run ef...
You deployed your app with the Bluemix PaaS and it's gaining some serious traction, so it's time to make some tweaks. Did you design your application in a way that it can scale in the cloud? Were you even thinking about the cloud when you built the app? If not, chances are your app is going to break. Check out this webcast to learn various techniques for designing applications that will scale successfully in Bluemix, for the confidence you need to take your apps to the next level and beyond.
Manufacturers are embracing the Industrial Internet the same way consumers are leveraging Fitbits – to improve overall health and wellness. Both can provide consistent measurement, visibility, and suggest performance improvements customized to help reach goals. Fitbit users can view real-time data and make adjustments to increase their activity. In his session at @ThingsExpo, Mark Bernardo Professional Services Leader, Americas, at GE Digital, will discuss how leveraging the Industrial Interne...
Whether your IoT service is connecting cars, homes, appliances, wearable, cameras or other devices, one question hangs in the balance – how do you actually make money from this service? The ability to turn your IoT service into profit requires the ability to create a monetization strategy that is flexible, scalable and working for you in real-time. It must be a transparent, smoothly implemented strategy that all stakeholders – from customers to the board – will be able to understand and comprehe...
Increasing IoT connectivity is forcing enterprises to find elegant solutions to organize and visualize all incoming data from these connected devices with re-configurable dashboard widgets to effectively allow rapid decision-making for everything from immediate actions in tactical situations to strategic analysis and reporting. In his session at 18th Cloud Expo, Shikhir Singh, Senior Developer Relations Manager at Sencha, will discuss how to create HTML5 dashboards that interact with IoT devic...