Posts about 400G

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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Earlier this month, I spent several days locked in a hi-tech lab facility in a secluded German village with some of Europe's leading optical engineers. The focus of this gathering was the development of terabit networks. Raise this topic with some within the networking industry and you will be greeted with raised eyebrows and furrowed brows. This is especially true for IT teams who are continually trying to combat shrinking budgets with increased bandwidth demands.
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