no ranging response received t3 time out

So, tl dr, three people in different apartments in the same complex, with identical network setups (aside from their NICs), all have the same 'No Ranging Response received - T3 time-out (US #)' over and over in their cable modem log. One is in my building, another at least two blocks away. I bought this modem 2 years ago, it should be fine. I had a comcast technician come out today and tell me that my modem is 'bad' and I need to replace it. I have been having issues with my modem reseting several times a day. Admittedly, it improved the signal-to-noise marginally, since he replaced one at one of the magical boxes outside, but the issue persists.Īdditionally, I have two friends in the same complex, with the same cable modem, who willingly use the ultra-simplified network setup, with the same amount or more of the T3 errors previously mentioned in their logs. Netgear CM1000 - No Ranging Response received - T3 time-out. Apparently I'm pants-on-head stupid, because I thought I'd already done that.

So, they agreed to send out a technical support guy, whose only solution to everything was to tighten and replace cables. They remotely verified what I already know, that our signal-to-noise ratio and downstream/upstream power levels are within acceptable bounds (thank you, Google), but that upstream occasionally spikes, coinciding with the interruptions. We went through the usual ISP song-and-dance (despite having the exact same configuration at another home with the same ISP) simplifying our network setup to a connection between the wall outlet, Motorola SB4101U cable modem, and the NIC on a variety of our computers. The interruption only occurs for a brief moment, which is no big deal for downloads, but doesn't work out for online gaming. These are accompanied in the cable modem log by the following error: 'No Ranging Response received - T3 time-out (US #)', where # might be 1 or 2. Whenever we run any sort of high-throughput application, such as a torrent-based updater or an online game, every so often our connection slows to a crawl, on the order of a few kbps a second. We recently moved into a new apartment and signed up with Cox Communications as our ISP.

No ranging response received t3 time out