Method, recording medium and network line card for performing content inspection across multiple packets

For using the band status packet content matching mechanisms for spanning the boundary performing packet content inspection method and device for. Mode packet data structure is used for helping in search algorithm machine. Transmitted packets is the current classification and are stored to corresponding stream queue. Flow table entries is used to mark to the data stream mode data structure. The content detecting period the said algorithm machine update state information to identify part or all of the matching. Towards the front when a group the tail end of the detected part is matched up to update flow meter in the packet state information so as to reflect state so as to the next packet content inspection from the beginning state. Result support over the border of the packet content inspection. These also can be used in a packet processing the context of the content of pipeline stages in.