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As Confucius said, knowing the past can provide hints for the future. Fundamentally, MPLS can be viewed as a variable-cell-size switching technology. While dismissed in the early days of ATM standardization, the advances of semiconductor, optical component technologies, and the rise of Internet data traffic provide a different set of criteria to reevaluate the technology.
Readers should draw their own conclusions from the evolution story of MPLS.
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