The Ethernet market is marked by technology transitions, which often result in large shifts in vendor share. Over the past several years, large data-center operators have increased the pace of technology innovation, creating markets for new speeds and new physical layers. These dynamics are behind the introduction of high-density 100G Ethernet switch chips, which also serve the new 25G and 50G Ethernet standards. The same operators also have a huge appetite for data-center interconnect (DCI) bandwidth, creating early demand for 400G Ethernet.
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