No Ranging Response received, T3 timeout
ExplanationThe cable modem sent a Ranging Request (RNG-REQ) message as part of its initial ranging process, but did not receive a Ranging Response (RNG-RSP) message from the CMTS within the T3 timeout period. The cable modem will adjust its upstream transmit power and send another RNG-REQ message, up to the maximum of 16 successive attempts, or until it reaches the maximum transmit power level. This error message is DOCSIS event message is R02.0, Ranging Request.
The CVC validation failures are USUALLY due to the modem trying to update its firmware without being properly prepped for it.