Netgear High Speed Cable Modem - DOCSIS 3.0 (CMD31T)

I ordered the NetGear CMD31T cable modem from Amazon.com. When it arrived, I took it out of the box, unplugged my Comcast-provided, rented modem and hooked up the new one. I followed the instructions on the sheet that came with the CMD31T which told me to call my service provider and supply them the serial number and MAC address for the new modem. I called and was answered reasonably quickly by a knowledgeable lady who took the serial number and MAC address and told me to be sure the CMD31T was connected to the Internet cable but to unplug it from my wireless router. She then initiated the modem, and told me to reattach the router. I had to adjust my network settings with a couple of DNS server entries and set it for "automatic DHCP addresses only," but when the modem came online, it was way faster than the one I had been renting. I asked about how I should set the IvP6 protocol, and she said that if I had a dynamic IP address, I wouldn't need that protocol, so I set IvP6 to "ignore." The computers that access this modem through the wireless router are all Linux boxes. This didn't present any problems; the whole process of setup to full access took a little more than half an hour. The rented modem I had been using I have boxed up and ready to return to the provider. I'm happy with my new cable modem.

Purchased modem and installed November of 2013 using Time Warner Cable, this modem kept dropping the signals could not keep connection. Also NETGEAR told me to password protect modem, password got messed up, hit the reset button on the back per Netgear and Modem would not reset to the default. NETGEAR informed me that their is a problem with this modem and it may extend to anyone who purchased this modem where the reset button, is not truly clearing all the settings.The MOTOROLA SB6141 non wireless modem works better and stays connected also support the Super High Speeds of Timer Warner Cable where the CMD31T does not and this is on the Time Warner Website when looking for Modems that work on their system, they have a webpage.The CMD31T keeps dropping all signals which I confirmed with Time Warner, and it kept dropping out of there system even though this is TWC approved.The most annoying part is that there were no cable outages and my signals were excellent from Time Warner but this Modem, if you unplugged it, or used a router with it, would drop the signals in a second. Constant Dropping of signals, yet Netgear had no clue other than to return the product. I even wonder if the NETGEAR Engineers fully tested this modem with all the problems, and read the reviews on other re sellers websites not very good.It did not work for me. I am reporting facts and statistics, and I have read the reviews, where one of the top executives admitted they had a problem with this modem and they were trying to work it out.Look I cannot tell someone what to purchase or buy, but I can say for me this modem had be reloaded into the Time Warner system about 6 times, it kept dropping, so I went and got a Motorola and it works fine, these are both good companies but NETGEAR Modems are trouble. Yes this was a Time Warner approved modem.Update Purchased a Motorola SB6141 Modem only, this modem does not support wireless, you need a router for Wireless. This Modem worked faster and much faster then the NETGEAR CMD31T. I ran Latency testing speed testing direct connected and the Motorola ran 5mbs faster than the NETGEAR and the Latency test showed 10ms faster on the Motorola.NETGEAR has some issues with this Modem, these are the Facts, sorry NETGEAR after 3 hours of customer support and at the end saying there was nothing that could be done except to return the product, took NETGEARS advice return the Product and on my own research purchased the Motorola SB6141.

I purchased this after realizing Time Warner Cable started charging $3.95 a month to lease that PoS cable box I've been using for the past six and a half years. They started charging a lease fee back in October 2012, so I've only paid like $16 thus far. I went on the TWC site to check out their list of approved devices and the Netgear CMD31T was on that short list for my subscribed speed (Turbo-20Mb down). Oddly, when I got the box, I was afraid to open it because it read plainly "Time Warner Cable not supported." WTF? I mentioned this to the chat technician, and she assured me that it "should" work. I simply gave her the MAC address of the new box and she entered it into my account and sent an initialization signal to the box from her end. On my end, I had to reboot BOTH the cable modem and the wireless router before I was able to get Internet connectivity. At that point, I checked the speed (go to the speed test page on TWC site) and it checked out. I've given it four stars instead of five because I just got it and won't know how it will perform in the long run for a while. I've used other Netgear products, like the wireless router and a ReadyNAS- both of which are good products and are still working. I've found no easy means of getting inside of the box to tweak it (I suspect if you could, TWC would have a problem with that). Still, for the money, it's relatively painless to install, and at TWC's lease fee rate, it will pay for itself in less than two years. I chose this over the other cable modems on TWC's list mainly because of cost (one was listed in excess of $200) but also because I once had a bad experience with a Motorola product that led me to believe their quality control isn't the greatest. To date, I've had good luck with Netgear products (knock on wood). Perhaps that's no accident.