The maximum number of permitted CPEs connecting to the
modem.
The value -1 means to use the default value of maximum
hosts per modem in the CMTS cable interface which the modem
connects to and the value is defined in
cdxCmtsCmDefaultMaxCpes in the cdxCmtsMacExtTable.
The value 0 means no maximum limit.
Setting the value will not affect the already connected
CPEs to the modem.