This table contains the status of the cable modems that
are polled by the CMTS CM Poller. The information will be
overwritten when a new polling cycle starts.
The removal of CM from the list or adding a new CM to the
list won't be reflected until the next polling cycle.
Depending on how many CMs that the poller is polling,
polling this table constantly can be quite expensive;
Therefore, it is best to poll upon receipt of the
cdrqCmtsCmRQDoneNotification. As a hedge against lost
notifications, periodic background polling should
be performed. Howerver, excessive polling could
degrade performance.