Message forwarding method and apparatus, assistance method and apparatus, controller and host

Abstract

The invention provides a message forwarding method. The method comprises the following steps: a specified host serving as other host gateway in an RDCS notifies a network of address attribute information via a predetermined protocol message, an SDN controller ensures the arrival of a data message between the host and the gateway according to the address attribute information; the specified host uses a host subnet IP address and an exit gateway device PGW in a user private data center station PDCS to establish a special line; and for the data message in which the destination IP address is the subnet IP address in the PDCS, the data message is packaged by the special line and is sent to the PGW by the special line. By adoption of the message forwarding method, an enterprise user can automatically deploy the special line between the RDCS and the PDCS, thereby avoiding complex application operations, and greatly avoiding the performance bottleneck caused by the deployment of a large numberof special lines by the public cloud exit gateway device CGW.

Description

technical field [0001] The present application relates to data communication technology, in particular to a message forwarding method, an assistance method, a device, a controller and a host. Background technique [0002] Large enterprises usually build one or more data center sites (Data Center Site, DCS), multiple DCS can be deployed in different physical areas, generally can be connected through a dedicated line (Virtual Private Network, VPN) to form a whole This will help improve the service response of enterprises to their online business, and can also enhance the robustness of online business to resist disasters and other emergencies. [0003] With the development of cloud computing technology, enterprises can now create a new data center site (Rent Data Center Site, RDCS) by renting the network, storage and computing resources of the public cloud to meet the needs of elastic computing. For example, for the booking / query service of a booking website, the demand for ti...

AI Technical Summary

Problems solved by technology

For public cloud service providers, on the one hand, a large number of private line configurations require a huge amount of manpower; on the other hand, carrying thousands or even tens of thousands of private lines such as IPSec will make it difficult for ordinary CGWs to bear this kind of private line management and maintenance pressure

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