Posts about 400G

400Gbit/s is right around the corner for data center switching, with significant implications for how data centers get built and connected. Given cloud customers will be the first to deploy this new speed and the technology behind it and the fact that the cloud will be that much larger in two years, we're discussing a massive inflection point for the market and the vendors that serve it ...



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With more than 14,500 attendees, last week’s OFC is the biggest event on optical communications worldwide. The massive capacity needs of internet content providers (ICPs) stirred hot debates at the conference and on the show floor. In his plenary talk, Urs Hölzle highlighted that Google’s data center bandwidth is roughly doubling every year, posing serious scaling challenges to the network infrastructure ...
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There’s been a lot of buzz around 4-Level Pulse Amplitude Modulation (PAM-4) in optical interconnect circles lately, and not without good reason. With the enterprise and metro carriers moving steadily toward 100Gbit/s connectivity, and already setting their sights on 400Gbit/s and beyond, the need to improve the ability of both the transmitter and receiver to handle large amounts of data is growing ...

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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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If there's one thing that can be said about the emerging distributed data environment, it's that it will be chaotic. At the moment, most long-haul connections between data centers and remote sites are built for largely predictable workloads: a daily data dump or at least semi-regular file transfers of reasonable size. As the enterprise gravitates toward multi-cloud infrastructure, however, the wide area network will take on more of the characteristics of the local area network: rapid, dynamic interchanges of data and applications that can wreak havoc on capacity planning, bandwidth management and other functions. Part of the solution to this problem is the data center interconnect (DCI), which provides broadband connectivity over great distances, usually on optical transport. But simply building a wider pipe is not enough. In order to gain optimal efficiency, the DCI will also have to scale dynamically to suit this constantly shifting mix of traffic ...
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