Patent ID: 8885650
Filing Date: 2014-11-11
Classification: H04L

Abstract:
1. A method for identifying each tunnel packet forwarded by one tunnel between a tunnel ingress device and a tunnel egress device, comprising: receiving, by the tunnel ingress device, a data packet to be forward by the tunnel; obtaining a dynamic identifier for uniquely identifying the data packet from other data packets forwarded by the tunnel, wherein the dynamic identifier is a time stamp or a random number generated according to a random function; performing tunnel encapsulation on the data packet by adding an tunnel-encapsulated packet header to outer layer of the data packet, wherein the tunnel-encapsulated packet header includes a triplet to make each tunnel-encapsulated data packet forwarded by the tunnel has a different triplet, the triplet comprises an Internet Protocol (IP) address of the tunnel ingress device, an IP address of the tunnel egress device, and the dynamic identifier; and sending the tunnel-encapsulated data packet, so that when the tunnel-encapsulated data packet is fragmented, the tunnel egress device may correctly reassemble the tunnel-encapsulated data packet according to the triplet.