Method and device for detecting network packet loss based on software defined network

A device for detecting network packet loss based on SDN, applied to a SDN controller, the device comprising:

• at least one processor;
• a storage system;
• and
• one or more programs that are stored in the storage system and executed by the at least one processor, the one or more programs comprising instructions for:
• the SDN controller selecting a data stream on a network path, and the network path including a plurality of switches;
• the SDN controller creating a start marking packet and an end marking packet;
• the SDN controller inserting the start marking packet in the data stream flowing through the first switch;
• after a unit time interval, the SDN controller inserting the end marking packet in the data stream flowing through the first switch;
• the SDN controller recording the start marking packet and the end marking packet being respectively reported by each switch on the network path;
• the SDN controller calculating an absolute packet value between the start marking packet and the end marking packet in the data stream flowing through each switch;
• the SDN controller calculating a network packet loss ratio according to the absolute packet value;
• and
• the SDN controller adjusting the network path according to the network packet loss ratio.