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Forum Discussion
cm600 won't negotiate 800down/100up
hi, gear: cm600, firmware V1.01.22, latest approved by xfinity. router is ubiquiti ER-X (1gig cable aggregate). xfinity super fast, 800down/100up, purchased plan. we just went from a triple play ...
I'd be betting on it being that modem. Xfinity just bumped up their upload speeds but only on midsplit/highsplit devices.
The cm600 (and the cm700) won't cut it currently.
knowledgebase/next-generation-internet - Comcast_Xfinity (reddit.com)
If you're shopping for a new modem, I'd look for at least a docsis 3.1 device.