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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.
thank you for that link. the modem is 1gig capable and docsis 3.0 (3.1 isn't that different). i see a cm1100 for a pretty good price on amazon. i'll buy it and try it. thanks for the reply.
jeff
the cm600 is only a 24x8 docsis 3.0 device. While the specs say up to 1 gig, xfinity doesn't certify it to those speeds.
Its only the docsis 3.1 devices they certify up to 1 gig. Even the cm700, which is a 32x8 modem, isn't gigabit certified. It can hit 900mbps but itsn't certified for it through xifnity.
A CM1100 is a good option. I've got one and its a solid device
- I just order the cm1100.
It’s still annoying that they’ve essentially blacklisted my cm600 so they it can’t be provisioned to 400/100.i'm in a similar situation with a CM600. the modem is locked to a 400mbps down/ 20mbps up profile and cannot be re-provisitioned to the 800/100 i pay for. CM600 is docsis 3.0. to get the profile/speed i pay for i have to upgrade to a docsis 3.1 model. just purchased a CM1100.
best,
jeff