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A tunnel selection method, device and system

A technology of tunneling and equipment, applied in the field of communication, can solve problems such as service interruption and inconsistency of the back and forth paths of data packets, and achieve the effect of improving reliability and avoiding the loss of data packets

Active Publication Date: 2018-05-04
BEIJING HUAWEI DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the back-and-forth paths of the data packets of the same service will be inconsistent, resulting in service interruption.

Method used

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  • A tunnel selection method, device and system
  • A tunnel selection method, device and system
  • A tunnel selection method, device and system

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Embodiment Construction

[0066] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention.

[0067] In the point-to-point VPN network system, the sending network device (Spoke) is the network device that actively initiates IKE negotiation and establishes an IPSec tunnel. The responder network device (HUB) is a network device that provides multiple Internet Service Provider (Internet Service Provider, ISP) interfaces and responds to IKE negotiations of other network devices. A network device can be both a sender network device and a responder network device for other network devices.

[0068] figure 1 It is a flow chart of a tunnel selection method provided by an embodiment of the present invention, and the method includes:

[0069] Step 101: The sender network dev...

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PUM

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Abstract

Embodiments of the present invention provide a tunnel selection method, device, and system. The sender network device sends a service data packet to the responder network device through the first IPSec tunnel with high priority, and the responder network device selects the first high-priority IPSec tunnel. A route, that is, select the first IPSec tunnel corresponding to the high-priority first route to return the service data message to the sender network device, that is, return the data message to the sender network device through the second IPSec tunnel. Realize the data interaction between the sender network device and the responder network device through the same IPSec tunnel, ensure that the transmission path of the service data message between the sender network device and the responder network device is consistent, and avoid the loss of data packets caused by choosing different transmission paths. Improve the reliability of transmitting service data packets.

Description

technical field [0001] The present invention relates to the technical field of communications, in particular to a tunnel selection method, device and system. Background technique [0002] Point-to-point (Site-to-Site) VPN network, also known as LAN to LAN VPN (LAN to LAN VPN), gateway to gateway VPN (Gateway to Gateway VPN), through the establishment of IPSec (IPSec) tunnel between two VPN networks , to realize data exchange between two VPN networks. [0003] When two VPN networks establish an IPSec tunnel, the initiator network device (Spoke, generally a branch) initiates the Internet Key Exchange Protocol (Internet Key Exchange, IKE) to the responder network device (HUB, generally the headquarters) to request the establishment of an IPSec tunnel . In order to improve the reliability of data transmission in the network, the responder network device provides multiple Internet Service Provider (Internet Service Provider, ISP) interfaces for the initiator network device, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46
Inventor 孙刚
Owner BEIJING HUAWEI DIGITAL TECH