Posts about OpenFlow

When I first wrote about smart cities for this blog back in 2013, the concept was still very much just that – a concept. Fast forward to today and nearly every city, both large and small, is developing and perhaps even implementing plans to make their cities smarter. Over these few years, the key drivers and motivations for moving towards a smart city environment have remained unchanged ...
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I thought I’d take a look at software-defined networking (SDN) this month, since it’s another topic I regularly see across Technically Speaking and a subject that’s been populating most technology news headlines recently. Like my previous article covering network functions virtualization (NFV) which was published last year, I wanted to not only understand the subject matter better myself, but share with you the fundamentals of the concept as well as its supposition ...
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Today the network operator industry descends on San Diego for NANOG 66. Carriers, vendors and other industry players will convene to share insights with one another on how to run a massive global IP network, as well as get a much needed shot of Vitamin D from some early Spring California sunshine. Standing here at NANOG reminds me of the last time I was in America’s Finest City when I got to pay another visit to San Diego’s world-renowned zoo. I’m sure that carriers and business customers attending the conference looking for DCI solutions will find it’s every bit as noisy and colourful as a wildlife exhibit ...
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For many years, network engineers had a dream. Their vision was that one day a network's operations and management would be driven by its applications. Today, with software-defined networking (SDN), that dream is finally becoming reality. ADVA Optical Networking recently played a key role in a major European multi-layer multi-vendor SDN field trial that was proof of this. The demonstration highlighted some of the key achievements of the past few months. As well as use cases like traffic optimization and multi-layer re-routing following cable breaks, the most significant breakthrough was the utilization of an SDN architecture in real-world production networks. Juniper Networks and ADVA Optical Networking had already demonstrated packet optical multi-layer coordination at SDN OpenFlow World Congress in Düsseldorf, Germany in October 2015. In that showcase ...
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2015 was a seminal year for data center interconnect (DCI) technology. It was the year that ever increasing spending by big data center operators and Internet content providers finally made the communications industry take note. No longer second fiddle to large Tier 1 Service Providers, large data centers were finally heard when they said “we need something different”. And the optical communications industry responded in a big way, not just tweaking existing products, but launching entirely new product lines to serve their big needs (and big spend). But if DCI hype reigned supreme for 2015, what does 2016 have in store for us all? Well, with the disclaimer that one predicts the future at his own peril, there are 5 major trends that I think show signs of being huge for DCI in 2016: 1. Power Efficiency Will Continue to Dominate - Power efficiency has always been important to DCI and it will stay on the agenda in 2016. Data center operators have plenty of money and space, just not power. They are literally building underfilled warehouses in the hopes that future power efficiency gains will allow them to fill them to capacity ...

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