This modem drops connections and/or get hung up constantly. It gets hung up and reboots itself several times a day. Sometimes I have to manually reset/power cycle the modem to get it back up and running again. You should NOT have to manually reset or power cycle your modem 2-10 times a day, especially a brand new modem. Tried troubleshooting with Comcast and was referred to Linksys Tech Support, who then tried to refer me back to Comcast. After telling them that Comcast referred me to Linksys in the first place, they tell me it is beyond their scope of expertise and referred me to Cisco Tech Support. Cisco Tech flat out said that they couldn't do anything for me or my problem since there is nothing configurable on the modem. I asked if the modem was faulty then wouldn't Cisco have to replace it under their 1 year warranty? The Cisco Tech said there was nothing they can do to help.
This problem with constant disconnects affects a lot of Comcast customers and the only fix seems to be have the firmware flashed back to the Aug 2011 because the Jan 2012 firmware is faulty. Unfortunately, none of the tech support people that I got in touch would was knowledgeable enough to help. Of the two Linksys and Cisco Tech I spoke to, neither was able to even give me the default password for the Modem status page.
The DPC3008 maybe Certified by Comcast but neither Comcast nor any part of Cisco or Linksys will provide support for it. This modem doesn't have a log page to see what went wrong and there is no interface or even download site for the user to change the firmware.
Also, when the modem is hung up or if the internet status is disconnected, there is no way to reach the modem status page through a browser via the IP address 192.168.100.1. All the other cables modems I've used before (Scientific Atlanta, Motorola Surfboard, and Linksys CM100) all were reachable even when the internet connection was down. With this one, you can't even check the status and there is no logs to troubleshoot with.
If you're with Comcast, stay away from this modem because the Certified for Comcast label on this modem is meaningless and you'll get no help from the manufacturer.
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