Network programmability has metamorphosed over the past twenty years from the controversial research vision of active networks, through PlanetLab, to the juggernaut of SDN and OpenFlow that has swept industry. Now PISA switches are emerging with support for protocol-independent reconfigurability. We reflect on how network architecture has evolved along a different path than we had foreseen to arrive at a place that is not so different than we and other researchers had hoped and imagined.

中文翻译：

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“迈向活跃的网络架构”回顾

在过去的 20 年里，网络可编程性已经从有争议的主动网络研究愿景通过 PlanetLab 转变为席卷工业的 SDN 和 OpenFlow 的主宰。现在 PISA 交换机正在兴起，支持独立于协议的可重构性。我们反思网络架构是如何沿着与我们预期不同的路径发展到一个与我们和其他研究人员所希望和想象的没有太大不同的地方。