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Downstream light keeps blinking
I have C6300 cable modem router with internet service through TimeWarner Cable aka Spectrum in Anaheim CA. My DS light keeps blinking I have reset router several times called cable company they refres...
Hello GEO714
I see you are getting T3 timeouts which may be a issues with noise on the cable lines they may need to send a tech out to check your lines.
T3 Timeout ( Ranging Request Retries Exhausted )
Explanation: The cable modem has sent 16 Ranging Request (RNG-REQ) messages without receiving a Ranging Response (RNG-RSP) message in reply from the CMTS. The cable modem is therefore resetting its cable interface and restarting the registration process. This typically is caused by noise on the upstream that causes the loss of MAC-layer messages. Noise could also raise the signal-to-noise ratio (SNR) on the upstream to a point where the cable modem’s power level is insufficient to transmit any messages. If the cable modem cannot raise its upstream transmit power level to a level that allows successful communication within the maximum timeout period, it resets its cable interface and restarts the registration process. This error message is DOCSIS event message is R03.0, Ranging Request
DarrenM
hold on, SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=a0:63:91:51:20:78;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0; ...... Unicast Ranging Received Abort Response - Re-initializing MAC;CM-MAC=a0:63:91:51:20:78;CMTS-MAC=e8:65:49:b9:19:d0;CM-QOS=1.1;CM-VER=3.0;
this was captured when internet failure last week. Am I looking at Downstreaming channels signal strenght / captured from ISP ...Upstream was extremely high and unlocked. Downstream unlocked channels and dBmv -15, -14, ... my understanding is if Upstream dBmv is above 45-50 this causes Downstream and connection failures.
- I’m not 100% but this looks like a line issue from your provider when they tested line what did they say it looked like? How long have you had your router? Is it new or been using it awhile now
- Couple yrs. i have faith in my router, more than Comcast .. also possible related or not, issues with frozen TV , pixelated screens, frozen controls
- Of course they initially tested, probably, maybe.. now tested individual channels, or performed load tests. Who knows
update to downstream channels that will not lock due to dBmv and SNR problems.
I found if I setup manually the Starting Frequency for the 8 channels on the Basic page/ during initialization and registration I get awesome results. now for some reason my ISP changes them after a few minutes. Does anyone know how to lock the startup freq permanently ?