A frame loss measurement apparatus and method for multicast service traffic

An apparatus and a method for measuring the loss of frames in a multicast service environment are provided to measure the loss of frames accurately even without advance information about a change in a traffic route of the multicast service or a node from which traffic is outputted. An input frame-counting unit(200) counts data frames of a specific multicast service, which is included in a target net of which the loss of frames is to be measured. An output frame-counting unit(210) counts data frames of the specific multicast service, which is outputted from the target net. A loss-measuring unit(220) measures the frame loss by comparing the number of data frames counted by the input frame-counting unit with the number of data frames counted by the output frame-counting unit.