@CristianBotelho call tech support and ask the Customer Service Rep to run a signal check on your modem. That test should fail automatically, or, if it doesn't it should just about fail. Your three DOCSIS 3.0 upstream channels are at or above the failure point depending on the point of view. DOCSIS 3.0 upstream power levels are topped at 51 dBmV according to the DOCSIS spec. Rogers uses 52 dBmV to define a failure point, so, your upstream levels sitting at 51.750 dBmV might trigger a failure.
In short, you need a field tech to determine what the problem is, an external cable problem and/or a connector problem, or possibly both. The packet loss that your seeing might be the result of the modem having to exceed 52 dBmV to maintain comms with the CMTS. In theory, by now, the modem should be shutting down one channel and pushing up the power on the remaining two channels in order to maintain comms with the CMTS. After that, if necessary, it will drop down to a single channel upstream mode. In each case, you will see the effects as your data rates will drop.
So, call tech support, ask for a signal check and let the CSR know that your upstream DOCSIS 3.0 channels are at the limit and that you're seeing packet loss when you ping the CMTS. If you're seeing any other problems with any other services such as Cable TV or Home Phone, let the CSR know.
Please let us know how tech support responds.
Ok, I`ll call tech support.
Look above is a half an hour of the test running.
