NETGEAR DOCSIS 3.0 - High Speed Cable Modem (CMD31T)

I bought this DOCSIS 3 cable modem to replace the leased modem offered by Comcast. They charge $7 a month to lease their modem, so this new modem should pay for itself after one year. It has very simple instructions: 1. Install the modem in place of your current modem 2. Wait for all the lights to come on, which can take up to 15 minutes (mine took about 5 minutes) 3. Call your cable provider with the MAC Address (it is printed on the modem, instruction sheet, and the box) so they can register your new modem 4. Verify you have internet access My real concern is how long it would take to get a Comcast person on the telephone to perform the modem registration, but I had a guy on the phone in less than 5 minutes and he knew exactly what was required to register the modem. It took about 10 minutes before internet access was restored, for a total of maybe 15-20 minutes without internet access from the time I disconnected the old modem until the new modem was working. The Netgear modem has easy to understand lights that let me know what is going on with my connection, and it is also somewhat smaller than the unit from Comcast. I picked this unit because of the price and it was on the Comcast compatibility list, and I'm happy with the choice.

I've had this for a month now. First off, I have Comcast. I had no problem getting this modem to work with Comcast at all. 1 phone call to comcast and they double checked it worked from their end (it helps in case you have problems later). and 1 call to save $8 a month by having Comcast's modem removed (they paid for it's shipping back to them). It was Very easy to install it. Very few cables to plug in, however you do need your own coax cable. It also looked good and was a lot smaller then the modem I got from Comcast. This seems to be one of the better cable modems i have had. Warning, The connected light will flash when you are using the internet. I like it as, if I'm not using the internet and it is flashing and not solid, I know it's time to change my password. However, it confused my husband. So instead of going to a new website, he kicked me off by unplugging the modem as he thought it was having problems. He was grumpy about it for a bit, but now that he knows what is going on, he is ok with it. It has met all my expectations.

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 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.

I bought this modem a year ago and it works most of the time, but not with the reliability to make your life easy. It worked the first few weeks after I bought it, but then the "online" light would flash and I could not connect to the internet. I called Time Warner Cable, they confirmed that internet service in my area was fine but they couldn't detect a connection to my modem. This lasted a few days, to which I started to make plans to get a new modem, but then the Netgear CMD31T started working again (after many tries of turning off and back on). Over the past year, the "online" light will start flashing once every two weeks and I'll have to power off/on and it works, occasionally I'll have to do it twice before it gets connectivity again. In the past year, I've had maybe 3 instances where I had to power/off on for an hour before it finally decided to work again. Definitely not a walk in the park, but works more often than not!