VPN data transmission method, device and server

Abstract

Embodiments of the present invention relate to the field of communication technologies, and disclose a VPN data transmission method, comprising: loading the VPN outer layer traffic of a client to a network node deployed based on a horizontal expansion mode, so that the network node establishes a VPN tunnel of the client; receiving The inner IP of the client sent by the network node, and bind the inner IP to the network node; identify whether the VPN intranet traffic of the client is received according to the inner IP; when receiving the VPN intranet traffic, the VPN intranet The traffic is forwarded to the network node, so that the network node encrypts and encapsulates the VPN intranet traffic into VPN outer traffic and forwards it to the client. The embodiment of the present invention also discloses a VPN data transmission device and a server. The VPN data transmission method, device and server provided by the embodiments of the present invention can ensure that both the inner and outer VPN traffic of the VPN are loaded to the same network node, thereby ensuring the effective transmission of the message.

Description

technical field [0001] The present invention relates to the field of communication technologies, and 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 master-standby relationship. When deployed according to the master-standby relationship, since only one network node works, it is easy to waste 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 network nodes are in an equal relationship, not the master-standby relationship, and the load balancing node balances the user traffic to the network nodes to achieve expansion. The purpose of network node performance. [0003] However, in the...

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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

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