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Extended upstream power allows 3.0 cable modems to transmit upstream bursts at higher powers than previously established. This feature has been added some time after the introduction of EuroDOCSIS 3.0. But why? Do we need higher powers now than before?
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TCP is an old protocol. Its original RFC dates back from 1981. Over time it has been tweaked and tuned in order to keep up with ever increasing demands. In this post I describe how one small tweak can make a big change in performance when using TCP on a 10Gbit Ethernet link.