|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?
SYS-CON Events announced today that IBM Cloud Data Services has been named “Bronze Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. IBM Cloud Data Services offers a portfolio of integrated, best-of-breed cloud data services for developers focused on mobile computing and analytics use cases.
Oct. 6, 2015 10:00 PM EDT Reads: 626
SYS-CON Events announced today that G2G3 will exhibit at SYS-CON's @DevOpsSummit Silicon Valley, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Based on a collective appreciation for user experience, design, and technology, G2G3 is uniquely qualified and motivated to redefine how organizations and people engage in an increasingly digital world.
Oct. 6, 2015 09:30 PM EDT Reads: 345
In his session at @ThingsExpo, Tony Shan, Chief Architect at CTS, will explore the synergy of Big Data and IoT. First he will take a closer look at the Internet of Things and Big Data individually, in terms of what, which, why, where, when, who, how and how much. Then he will explore the relationship between IoT and Big Data. Specifically, he will drill down to how the 4Vs aspects intersect with IoT: Volume, Variety, Velocity and Value. In turn, Tony will analyze how the key components of IoT ...
Oct. 6, 2015 08:00 PM EDT Reads: 310
When it comes to IoT in the enterprise, namely the commercial building and hospitality markets, a benefit not getting the attention it deserves is energy efficiency, and IoT’s direct impact on a cleaner, greener environment when installed in smart buildings. Until now clean technology was offered piecemeal and led with point solutions that require significant systems integration to orchestrate and deploy. There didn't exist a 'top down' approach that can manage and monitor the way a Smart Buildi...
Oct. 6, 2015 05:00 PM EDT Reads: 251
SYS-CON Events announced today that Cloud Raxak has been named “Media & Session Sponsor” of SYS-CON's 17th Cloud Expo, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Raxak Protect automates security compliance across private and public clouds. Using the SaaS tool or managed service, developers can deploy cloud apps quickly, cost-effectively, and without error.
Oct. 6, 2015 04:40 PM EDT
As-a-service models offer huge opportunities, but also complicate security. It may seem that the easiest way to migrate to a new architectural model is to let others, experts in their field, do the work. This has given rise to many as-a-service models throughout the industry and across the entire technology stack, from software to infrastructure. While this has unlocked huge opportunities to accelerate the deployment of new capabilities or increase economic efficiencies within an organization, i...
Oct. 6, 2015 03:00 PM EDT Reads: 119
“All our customers are looking at the cloud ecosystem as an important part of their overall product strategy. Some see it evolve as a multi-cloud / hybrid cloud strategy, while others are embracing all forms of cloud offerings like PaaS, IaaS and SaaS in their solutions,” noted Suhas Joshi, Vice President – Technology, at Harbinger Group, in this exclusive Q&A with Cloud Expo Conference Chair Roger Strukhoff.
Oct. 6, 2015 02:45 PM EDT Reads: 370
SYS-CON Events announced today that ProfitBricks, the provider of painless cloud infrastructure, will exhibit at SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. ProfitBricks is the IaaS provider that offers a painless cloud experience for all IT users, with no learning curve. ProfitBricks boasts flexible cloud servers and networking, an integrated Data Center Designer tool for visual control over the...
Oct. 6, 2015 01:00 PM EDT Reads: 739
You have your devices and your data, but what about the rest of your Internet of Things story? Two popular classes of technologies that nicely handle the Big Data analytics for Internet of Things are Apache Hadoop and NoSQL. Hadoop is designed for parallelizing analytical work across many servers and is ideal for the massive data volumes you create with IoT devices. NoSQL databases such as Apache HBase are ideal for storing and retrieving IoT data as “time series data.”
Oct. 6, 2015 12:45 PM EDT Reads: 458
Clearly the way forward is to move to cloud be it bare metal, VMs or containers. One aspect of the current public clouds that is slowing this cloud migration is cloud lock-in. Every cloud vendor is trying to make it very difficult to move out once a customer has chosen their cloud. In his session at 17th Cloud Expo, Naveen Nimmu, CEO of Clouber, Inc., will advocate that making the inter-cloud migration as simple as changing airlines would help the entire industry to quickly adopt the cloud wit...
Oct. 6, 2015 12:30 PM EDT Reads: 585
As the world moves towards more DevOps and microservices, application deployment to the cloud ought to become a lot simpler. The microservices architecture, which is the basis of many new age distributed systems such as OpenStack, NetFlix and so on, is at the heart of Cloud Foundry - a complete developer-oriented Platform as a Service (PaaS) that is IaaS agnostic and supports vCloud, OpenStack and AWS. In his session at 17th Cloud Expo, Raghavan "Rags" Srinivas, an Architect/Developer Evangeli...
Oct. 6, 2015 12:15 PM EDT Reads: 110
SYS-CON Events announced today that VividCortex, the monitoring solution for the modern data system, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. The database is the heart of most applications, but it’s also the part that’s hardest to scale, monitor, and optimize even as it’s growing 50% year over year. VividCortex is the first unified suite of database monitoring tools specifically desi...
Oct. 6, 2015 12:00 PM EDT Reads: 412
Organizations already struggle with the simple collection of data resulting from the proliferation of IoT, lacking the right infrastructure to manage it. They can't only rely on the cloud to collect and utilize this data because many applications still require dedicated infrastructure for security, redundancy, performance, etc. In his session at 17th Cloud Expo, Emil Sayegh, CEO of Codero Hosting, will discuss how in order to resolve the inherent issues, companies need to combine dedicated a...
Oct. 6, 2015 12:00 PM EDT Reads: 440
Secure Cloud through Automated Compliance | @CloudExpo @CloudRaxak #Cloud #BigData #DevOps #Microservices
Cloud computing delivers on-demand resources that provide businesses with flexibility and cost-savings. The challenge in moving workloads to the cloud has been the cost and complexity of ensuring the initial and ongoing security and regulatory (PCI, HIPAA, FFIEC) compliance across private and public clouds. Manual security compliance is slow, prone to human error, and represents over 50% of the cost of managing cloud applications. Determining how to automate cloud security compliance is critical...
Oct. 6, 2015 12:00 PM EDT Reads: 248
Culture is the most important ingredient of DevOps. The challenge for most organizations is defining and communicating a vision of beneficial DevOps culture for their organizations, and then facilitating the changes needed to achieve that. Often this comes down to an ability to provide true leadership. As a CIO, are your direct reports IT managers or are they IT leaders? The hard truth is that many IT managers have risen through the ranks based on their technical skills, not their leadership ab...
Oct. 6, 2015 11:00 AM EDT Reads: 850
Learn how Backup as a Service can help your customer base protect their data. In his session at 17th Cloud Expo, Stefaan Vervaet, Director of Strategic Alliances at HGST, will discuss the challenges of data protection in an era of exploding storage requirements, show you the benefits of a backup service for your cloud customers, and explain how the HGST Active Archive and CommVault are already enabling this service today with customer examples.
Oct. 6, 2015 11:00 AM EDT Reads: 680
SYS-CON Events announced today that Key Information Systems, Inc. (KeyInfo), a leading cloud and infrastructure provider offering integrated solutions to enterprises, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Key Information Systems is a leading regional systems integrator with world-class compute, storage and networking solutions and professional services for the most advanced softwa...
Oct. 6, 2015 11:00 AM EDT Reads: 326
Apps and devices shouldn't stop working when there's limited or no network connectivity. Learn how to bring data stored in a cloud database to the edge of the network (and back again) whenever an Internet connection is available. In his session at 17th Cloud Expo, Bradley Holt, Developer Advocate at IBM Cloud Data Services, will demonstrate techniques for replicating cloud databases with devices in order to build offline-first mobile or Internet of Things (IoT) apps that can provide a better, ...
Oct. 6, 2015 10:45 AM EDT Reads: 452
Cloud Foundry open Platform as a Service makes it easy to operate, scale and deploy application for your dedicated cloud environments. It enables developers and operators to be significantly more agile, writing great applications and deliver them in days instead of months. Cloud Foundry takes care of all the infrastructure and network plumbing that you need to build, run and operate your applications and can do this while patching and updating systems and services without any downtime.
Oct. 6, 2015 10:00 AM EDT Reads: 4,420
SYS-CON Events announced today that Interface Masters Technologies, provider of leading network visibility and monitoring solutions, will exhibit at the 17th International CloudExpo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Interface Masters Technologies is a leading provider of high speed networking solutions focused on Gigabit, 10 Gigabit, 40 Gigabit and 100 Gigabit Ethernet network access and connectivity products. For over 20 ye...
Oct. 6, 2015 10:00 AM EDT Reads: 666