VPN data transmission method and device and server

Abstract

The embodiment of the invention relates to the technical field of communication, and discloses a VPN data transmission method. The method comprises the following steps: loading VPN outer layer flow of a client to a network node deployed based on a horizontal extension mode, so that the network node establishes a VPN tunnel of the client; receiving an inner-layer IP of the client sent by the network node, and binding the inner-layer IP with the network node; identifying whether the VPN intranet flow of the client is received or not according to the inner layer IP; and when the VPN intranet traffic is received, forwarding the VPN intranet traffic to the network node, so that the network node encrypts and packages the VPN intranet traffic into VPN outer-layer traffic and forwards the VPN outer-layer traffic to the client. The embodiment of the invention further discloses a VPN data transmission device and a server. According to the VPN data transmission method, the VPN data transmission device and the server provided by the embodiment of the invention, the inner layer VPN flow and the outer layer VPN flow of the VPN can be ensured to be loaded to the same network node, and the effective transmission of the message is ensured.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a VPN data transmission method, device and server. Background technique [0002] At present, cloud platform network nodes are often deployed according to the relationship between master and backup. When deploying according to the relationship of master and backup, because only one network node works, it is easy to cause waste of resources; at the same time, because the working network node will carry the traffic of all users, Therefore, the network node is likely to become a network performance bottleneck. In order to solve the above problems, the horizontal expansion mode of network nodes can be introduced. In the horizontal expansion mode, the relationship between network nodes is equal, not the relationship between master and backup. The load balancing node balances the user traffic to the network nodes, so as to achieve expansion Purpose of network node perfor...

AI Technical Summary

Problems solved by technology

[0003] However, in the horizontal expansion mode, since the load balancing node uses IP4 tuples to load user traffic, it cannot be guaranteed that the inner and outer VPN traffic loads of the user VPN tunnel will go to the same network node, and may be distributed to different network nodes

For example, the traffic that a user establishes a VPN tunnel is distributed to network node A, and the traffic that needs to be transmitted through the VPN tunnel is distributed to network node B. Since network node B does not have the user's VPN tunnel information, the packets distributed to network node B Unable to transmit to the user, resulting in failure of message transmission

Images