SD-WAN system, method for using SD-WAN system, and related device

Abstract

The present application relates to the technical field of communication and discloses an SD-WAN system, a method for using an SD-WAN system, and a related device. In the present application, the SD-WAN system includes: a virtual logical network layer, a physical network layer, a network interconnection layer, and a user layer; the virtual logical network layer is physically connected to the physical network layer, and is in communication connection to the network interconnection layer; the network interconnection layer is physically connected to the physical network layer and is in communication connection to the user layer; wherein, the network interconnection layer is configured to receive the access data of the user layer to the physical network layer, send a access request generated according to the access data to the virtual logical network layer, and transfer the access data to the physical network layer under the control of the virtual logical network layer; the virtual logicalnetwork layer is configured to control the network interconnection layer to transfer the access data to the physical network layer according to the access request. The SD-WAN system transforms the existing WAN into an SD-WAN.

Description

technical field [0001] The present application relates to the field of communication technology, and in particular to an SD-WAN system, a method for using the SD-WAN system, and related devices. Background technique [0002] Enterprise WAN (wide area network, WideAreaNetwork, also known as longhaul network) has shifted from dedicated TDM (time division multiplexing) circuits to Packet-over-SONET (synchronous optical network packet data) and MPLS (multi-protocol label interaction, Multi- ProtocolLabelSwitching), and now moved to Ethernet access services. However, two things remain the same in this process, namely, WAN bandwidth is still expensive and it takes a long time to provision WAN services. Additionally, WANs face many challenges, including backup link utilization, remote site security, traffic engineering, quality of service, contactless provisioning, and traffic visibility. And SD-WAN (Software Defined Wide Area Network, Software Defined WAN) can effectively solve ...

AI Technical Summary

Problems solved by technology

[0003] However, the inventors found at least the following problems in the prior art: although the deployment of SD-WAN for enterprises can greatly reduce the cost of WAN and significantly improve the flexibility of its connection, the existing WAN system is directly discarded and the SD-WAN system is re-deployed. WAN, on the one hand, will lead to waste of the existing WAN system, on the other hand, in the deployment process of the existing SD-WAN, it is necessary to use supporting, even SD-WAN controllers provided by the same manufacturer and with traffic forwarding function Forwarders, SD-WAN is limited by equipment, and redeploying SD-WAN requires a lot of energy and material resources

Regardless of the above-mentioned factors, it will seriously increase the cost of the enterprise

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