|By Lori MacVittie||
|December 19, 2012 09:00 AM EST||
Now, if we look at the benefits we can attempt to infer what the problems SDN is trying to solve:
|Programmability||Network components today, particularly hardware-based components, run specific feature sets that can only be modified by the vendor, which happens on a 12-18 month schedule, security and hot-fixes not withstanding. New features and functions can only be added by the vendor based on their prioritization, not the customer.|
|Automation||Manual configuration of network components is time consuming, costly, and introduces a higher risk of human error that can result in outages, poor performance, or security risks.|
|Network control||The network today doesn't adapt rapidly to changing conditions or events. While some protocols simulate such adaptability, these protocols can't autonomously route around outages or failures or modify existing policies easily.|
These are certainly problems for IT organizations of a variety of sizes and composition. The question then is, how does SDN uniquely solve those problems?
The answer is that as a concrete solution (i.e. components, software, and architectures) it does not uniquely solve the problem. As a concept, however, it does.
Someone's no doubt quite upset at the moment at that statement. Let's explain it before someone's head explodes.
CONCEPT versus CONCRETE
The concept of separating data and control plane enables programmability. Without that separation, we have what we have today – static, inflexible networking components. But the concept of separating data and control planes isn't unique to solutions labeled specifically SDN. ADN is a good example of this (you saw that coming, didn't you?)
A network component can – and this may surprise some people – internally decouple control and data planes. Yeah, I know, right? And doing so enables a platform that looks a whole lot like SDN diagrams, doesn't it – with plug-ins and programmability. This occurs in full-proxy architectures when there exist dual stacks – one on the client side, one on the server side. Where traffic transitions from one stack to the other exists an opportunity to inspect, to manipulate, to modify, the traffic. Because the architecture requires acting as an endpoint to clients (and conversely as the point of origin for the server side), protocols can even be implemented in this "no man's land" between client and server. That enables protocol transitioning, such as enabling SPDY on the outside while still speaking HTTP on the inside or IPv4 to servers while supporting IPv6 on the client (and vice-versa).
Where the separation occurs is not necessarily as important as the fact that it exists – unless you're focused on concrete, SDN-labeled solutions as being the only solutions that can provide the flexibility that programmability offers.
Automation occurs by exposing the management plane through an API (or implementing a specific API, such as OpenFlow) such that operational tasks and configuration can be achieved through tools instead of time.
Between automation and programmability, you realize network control.
Now, this is not SDN, at least not in terms of protocol support and concrete architecture. But it is software-defined, and it is networking, so does it count?
I guess it depends. ADN has always approached layers 4-7 with an eye toward extensibility, programmability and control that enables agility in the network. We didn't call it SDN and I don't see the industry deciding to "SDN-wash" existing ADN solutions as SDN just because a new term came along and became the TLA du jour.
What I do see is that ADN and specifically full-proxy based ADC (application delivery controllers) already offer the same benefits using the same concepts as SDN. Consider again the core characteristics of SDN:
1. Control and data planes are decoupled
2. Intelligence and state are logically centralized
3. Underlying network infrastructure abstracted from applications
All of these characteristics are present in an ADN. The ability to leverage network-side scripting on the control plane side of the equation enables extensibility, rapid innovation, and ability to adapt to support new protocols, new applications, new business requirements – all without involving the vendor. Which is exactly one of the benefits cited for SDN solutions and specifically OpenFlow-enabled architectures.
So the question really is, does it matter if a solution to the problem of "agility in the network" is a concrete or conceptual SDN solution if it ultimately solves the same set of problems?
Today air travel is a minefield of delays, hassles and customer disappointment. Airlines struggle to revitalize the experience. GE and M2Mi will demonstrate practical examples of how IoT solutions are helping airlines bring back personalization, reduce trip time and improve reliability. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Dr. Sarah Cooper, M2Mi’s VP Business Development and Engineering, will explore the IoT cloud-based platform technologies driving this change including privacy controls, data transparency and integration of real time context wi...
Jun. 30, 2015 04:21 PM EDT Reads: 454
It is one thing to build single industrial IoT applications, but what will it take to build the Smart Cities and truly society-changing applications of the future? The technology won’t be the problem, it will be the number of parties that need to work together and be aligned in their motivation to succeed. In his session at @ThingsExpo, Jason Mondanaro, Director, Product Management at Metanga, discussed how you can plan to cooperate, partner, and form lasting all-star teams to change the world and it starts with business models and monetization strategies.
Jun. 30, 2015 02:15 PM EDT Reads: 2,128
Internet of Things is moving from being a hype to a reality. Experts estimate that internet connected cars will grow to 152 million, while over 100 million internet connected wireless light bulbs and lamps will be operational by 2020. These and many other intriguing statistics highlight the importance of Internet powered devices and how market penetration is going to multiply many times over in the next few years.
Jun. 30, 2015 01:45 PM EDT Reads: 1,969
Internet of Things (IoT) will be a hybrid ecosystem of diverse devices and sensors collaborating with operational and enterprise systems to create the next big application. In their session at @ThingsExpo, Bramh Gupta, founder and CEO of robomq.io, and Fred Yatzeck, principal architect leading product development at robomq.io, discussed how choosing the right middleware and integration strategy from the get-go will enable IoT solution developers to adapt and grow with the industry, while at the same time reduce Time to Market (TTM) by using plug and play capabilities offered by a robust IoT ...
Jun. 30, 2015 01:45 PM EDT Reads: 1,845
To many people, IoT is a buzzword whose value is not understood. Many people think IoT is all about wearables and home automation. In his session at @ThingsExpo, Mike Kavis, Vice President & Principal Cloud Architect at Cloud Technology Partners, discussed some incredible game-changing use cases and how they are transforming industries like agriculture, manufacturing, health care, and smart cities. He will discuss cool technologies like smart dust, robotics, smart labels, and much more. Prepare to be blown away with a glimpse of the future.
Jun. 30, 2015 10:20 AM EDT Reads: 515
The Internet of Things is not only adding billions of sensors and billions of terabytes to the Internet. It is also forcing a fundamental change in the way we envision Information Technology. For the first time, more data is being created by devices at the edge of the Internet rather than from centralized systems. What does this mean for today's IT professional? In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists addressed this very serious issue of profound change in the industry.
Jun. 30, 2015 09:45 AM EDT Reads: 868
SYS-CON Events announced today that BMC 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. BMC delivers software solutions that help IT transform digital enterprises for the ultimate competitive business advantage. BMC has worked with thousands of leading companies to create and deliver powerful IT management services. From mainframe to cloud to mobile, BMC pairs high-speed digital innovation with robust IT industrialization – allowing customers to provide amazing user experiences with optimized IT per...
Jun. 29, 2015 12:15 PM EDT Reads: 2,627
There will be 150 billion connected devices by 2020. New digital businesses have already disrupted value chains across every industry. APIs are at the center of the digital business. You need to understand what assets you have that can be exposed digitally, what their digital value chain is, and how to create an effective business model around that value chain to compete in this economy. No enterprise can be complacent and not engage in the digital economy. Learn how to be the disruptor and not the disruptee.
Jun. 29, 2015 11:00 AM EDT Reads: 2,154
The Internet of Things is not only adding billions of sensors and billions of terabytes to the Internet. It is also forcing a fundamental change in the way we envision Information Technology. For the first time, more data is being created by devices at the edge of the Internet rather than from centralized systems. What does this mean for today's IT professional? In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists will addresses this very serious issue of profound change in the industry.
Jun. 29, 2015 09:45 AM EDT Reads: 2,497
Business as usual for IT is evolving into a "Make or Buy" decision on a service-by-service conversation with input from the LOBs. How does your organization move forward with cloud? In his general session at 16th Cloud Expo, Paul Maravei, Regional Sales Manager, Hybrid Cloud and Managed Services at Cisco, discusses how Cisco and its partners offer a market-leading portfolio and ecosystem of cloud infrastructure and application services that allow you to uniquely and securely combine cloud business applications and services across multiple cloud delivery models.
Jun. 28, 2015 11:00 AM EDT Reads: 2,198
In his General Session at 16th Cloud Expo, David Shacochis, host of The Hybrid IT Files podcast and Vice President at CenturyLink, investigated three key trends of the “gigabit economy" though the story of a Fortune 500 communications company in transformation. Narrating how multi-modal hybrid IT, service automation, and agile delivery all intersect, he will cover the role of storytelling and empathy in achieving strategic alignment between the enterprise and its information technology.
Jun. 27, 2015 10:00 AM EDT Reads: 2,223
Buzzword alert: Microservices and IoT at a DevOps conference? What could possibly go wrong? In this Power Panel at DevOps Summit, moderated by Jason Bloomberg, the leading expert on architecting agility for the enterprise and president of Intellyx, panelists peeled away the buzz and discuss the important architectural principles behind implementing IoT solutions for the enterprise. As remote IoT devices and sensors become increasingly intelligent, they become part of our distributed cloud environment, and we must architect and code accordingly. At the very least, you'll have no problem fillin...
Jun. 26, 2015 12:00 PM EDT Reads: 2,209
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Opening Keynote at 16th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, d...
Jun. 26, 2015 10:00 AM EDT Reads: 2,069
Converging digital disruptions is creating a major sea change - Cisco calls this the Internet of Everything (IoE). IoE is the network connection of People, Process, Data and Things, fueled by Cloud, Mobile, Social, Analytics and Security, and it represents a $19Trillion value-at-stake over the next 10 years. In her keynote at @ThingsExpo, Manjula Talreja, VP of Cisco Consulting Services, discussed IoE and the enormous opportunities it provides to public and private firms alike. She will share what businesses must do to thrive in the IoE economy, citing examples from several industry sectors.
Jun. 25, 2015 02:00 PM EDT Reads: 2,008
In his keynote at 16th Cloud Expo, Rodney Rogers, CEO of Virtustream, discussed the evolution of the company from inception to its recent acquisition by EMC – including personal insights, lessons learned (and some WTF moments) along the way. Learn how Virtustream’s unique approach of combining the economics and elasticity of the consumer cloud model with proper performance, application automation and security into a platform became a breakout success with enterprise customers and a natural fit for the EMC Federation.
Jun. 25, 2015 01:30 PM EDT Reads: 2,156
SYS-CON Events announced today that the "Second Containers & Microservices Conference" will take place November 3-5, 2015, at the Santa Clara Convention Center, Santa Clara, CA, and the “Third Containers & Microservices Conference” will take place June 7-9, 2016, at Javits Center in New York City. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
Jun. 22, 2015 02:15 PM EDT Reads: 2,776
SYS-CON Events announced today that the "First Containers & Microservices Conference" will take place June 9-11, 2015, at the Javits Center in New York City. The “Second Containers & Microservices Conference” will take place November 3-5, 2015, at Santa Clara Convention Center, Santa Clara, CA. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
Jun. 20, 2015 12:00 PM EDT Reads: 3,869
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo in Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal an...
Jun. 15, 2015 08:45 PM EDT Reads: 4,101
17th Cloud Expo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises are using some form of XaaS – software, platform, and infrastructure as a service.
Jun. 15, 2015 07:15 PM EDT Reads: 3,892
The 17th International Cloud Expo has announced that its Call for Papers is open. 17th International Cloud Expo, to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, APM, APIs, Microservices, Security, Big Data, Internet of Things, DevOps and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal today!
Jun. 15, 2015 10:15 AM EDT Reads: 5,973