On a serial line, this can be caused by a malfunctioning modem that is not supplying the transmit clock signal, or by a cable problem. If the system notices that the carrier detect line of a serial interface is up, but the line protocol is down, it periodically resets the interface in an effort to restart it. Interface resets can also occur when an interface is looped back or shut down. Indicates modem or line problems if the carrier detect line is changing state often. Framing error counter.
Values are active or inactive.
Values are active or inactive. Values are active or inactive. Values are active or inactive. Values are active or inactive. Values are active or inactive.