In other words, if RF channel impairment is below the resiliency threshold, CM’s service flows are moved to Resiliency Bonding Group (RBG) or Narrow Band (NB) interface. When DOCSIS3.1 CM reports non-primary RF channel failure for SCQAM or OFDM channel, actions performed by downstream resiliency is the same as DOCSIS3.0 CM. The modem experienced an unrecoverable error and service has been disrupted. It was safely able to repair or ignore the issue and continue functions normally.

The modem encountered a situation which may indicate a problem with configuration of the modem or CMTS. This will not cause any issue in a production environment. The modem has used default settings for information omitted, or has ignored additional settings that it didn’t require. The modem encountered a situation which is noteworthy but does not pose any problem. Most modems classify events into error levels. The different wording does not indicate the event is different than the description posted here. Any event logs from this point until the modem can establish a connection to the network time server to retrieve the current time will usually be or similar.Įach model of modem has different wording for the various DOCSIS events that can occur. This means that any time the modem is powered off or reset by it’s reset button, it’s internal time and date is reset. Most modems do not have a RTC (Real Time Clock) battery. If you have any corrections, comments or criticism comment below! The information here is a collection from different sources such as The Volpe Firm, DSL Reports, and other reliable sources. This document gives an overview of common DOCSIS events one might encounter within a cable modem’s DOCSIS event logs and gives a brief explanation of what each event means.

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