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A single point of failure triggered the Amazon outage affecting millions
(arstechnica.com)
This is a most excellent place for technology news and articles.
You need a new modem that supports the higher upload speed protocol. And having a DOCSIS 3.1 isn't enough... it has to be a DOCSIS 3.1 that supports the new protocols. I had to switch to a Hitron CODA because my Netgear CM1000 wasn't enough anymore