PACKET HANDLING METHOD, FORWARDING DEVICE AND SYSTEM

摘要

Disclosed are a packet handling method, forwarding device and system. The packet handling method comprises: receiving a TCP ACK packet currently transmitted by a client; when an Acknowledge Number field value in a TCP header of the TCP ACK packet currently transmitted is identical to the Acknowledge Number field value of the TCP header of a TCP ACK packet previously transmitted for a same TCP connection, searching in a memory device for the TCP packet for which retransmission is requested by the TCP ACK packet; when the TCP packet for which retransmission is requested is found, discarding the TCP ACK packet, and transmitting the TCP packet to the client. In comparison to the prior art, where the TCP packet at anytime is directly transmitted by a server to the client via the forwarding device, this conserves the bandwidth from the server to the forwarding device, thereby reducing network congestion, and increasing network resource utilization rate.