Posted 05 June 2012 - 06:00 PM
Internet will randomly "pause" (I will temporarily lose communication with the internet for 5-10 seconds at a time.) This is enough time to drop an online video conference call or a large download both of which can and have been very troublesome. I moved my cable modem to a spot I could see the lights when this problem occurs. I was able to determine that the 3rd light changes from solid to flashing during the "pause" and the other 4 lights go solid. (this includes the "internet" light that normally blinks.) When the pause ends, the middle light instantly becomes solid again and the internet light returns to flashing. The middle light in my case is the US or upstream light on my Linksys CM100 cable modem. I called Mediacom after seeing these issues occur quite often over the last month. They sent a tech out who replaced the ends of my lines, replaced an ancient splitter, and tested signals from every end possible.
Troubleshooting: I do run through a router but it is clear the problem lies with the connection to the modem. Regardless, I have tried the following.
1. Hard reset/power cycle all of my hardware. (modem, computer, router)
2. I have tried direct connect from my modem to my computer.
3. I have tried using multiple computers to see if the problem resided with my own.
4. I have brought my modem over to a friend's house to see if the modem was malfunctioning. He had my modem for 3 days and it was under constant use without a single intermittent problem. My problem occurs daily and I felt 3 days a sufficient amount testing time. For the record his ISP is Comcast.
I am posting here to diagnose the issue and find out if the problem resides with my cable modem or Mediacom's services. I want to know exactly why the the light patterns on the cable modem change the way they do so that I can interpret what is actually happening. Whenever my internet has a real drop the modem just cycles back from the beginning and this is a very different issue. Thanks for the help guys