Packet processing system and packet processing method thereof for detecting microbursts and accordingly processing packets

A packet processing system comprising:

• an ingress unit configured to receive a packet;
• a detour launcher configured to detect a microburst and accordingly send the packet, wherein the detour launcher comprises a microburst detector and a switch selector, the microburst detector is configured to determine the microburst according to at least a queue value, and the switch selector is configured to determine a target switch;
• a packet sequencer configured to attach a sequence number to the packet when the microburst emerges;
• a post-detoured handler configured to release the packet after the microburst has elapsed;
• and
• an egress unit configured to output the packet processed by at least one member of a group consisting of the detour launcher, the packet sequencer and the post-detour handler;
• wherein the microburst detector determines the microburst has emerged when the queue value is greater than a threshold, the detour launcher sends the packet to the packet sequencer, the packet sequencer attaches the sequence number to the packet, the egress unit outputs the packet to the target switch determined by the switch selector, and the target switch sends the packet to the ingress unit after the microburst has elapsed.