Multilink tunnel message transmitting method and system

Abstract

The invention relates to a data communication technology and discloses a multilink tunnel message transmitting method and system. The technical scheme is that a virtual L2TP tunnel is configured for each link, and the links where the L2TP tunnels are established are bound and identified; various queues are initialized, and a sending main queue and a receiving main queue are established; when messages reach to the sending end, the messages of the sending main queue are numbered, and serial numbers of different L2TP message header identification messages are packaged after interfaces are selected according to load configuration; the bandwidth is calculated according to the packet loss ratio, and the sending rate of each link is adjusted according to the bandwidth. The multilink tunnel message transmitting system is composed of a sender and a receiver. The orderly transmission and anti-packet-loss capacity of links can be enhanced. The purposes of time delay equalization and service bandwidth widening are achieved by binding multiple links and reasonably adjusting the sending rate of each link.

Description

technical field [0001] The invention relates to a data communication technology, in particular to a multi-link tunnel message orderly transmission technology in the field of data communication. Background technique [0002] When an enterprise network leases a carrier network as a link, the stability, delay, and bandwidth of some links, especially wireless links, may change instantaneously or even be disconnected. In order to ensure its reliability, the link is generally backed up. The current backup technology includes dial-up backup or route backup. No matter which backup technology is used, the switching time of the link is generally more than tens of seconds. The main reason is that the switching needs The link ppp (Point to Point Protocol) keep-alive disconnection or the three-layer application and dynamic routing protocol are used as judgment conditions, and the generation of these conditions has a long time process. In order to expand the bandwidth, multi-link bundlin...

AI Technical Summary

Problems solved by technology

For TCP (Transmission Control Protocol) streams, it is difficult to increase the bandwidth of a single TCP connection due to the difference in the delay of each link.

At the same time, most operators have PPP proxy situations, and PPP keep-alive packets are all proxied by the operator, making it difficult for PPP keep-alive to reflect link connectivity, and in extreme cases, it will cause packet loss for a long time

When the bandwidth of one of the links changes, the current technology cannot adjust the traffic load of each link, which will lead to problems such as the data flow of some links may be too large and cause packet loss.

To sum up, the existing technology cannot solve the problem of inconsistent packet delays on multiple links, cannot solve the problem of packet loss caused by the interruption of one of the links, and cannot solve the problem of link bandwidth changes that the traffic sender cannot perceive and cannot make full use of. bandwidth problem

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