Redirection method for virtual machine network connection when on-line migrating striding sub network

Abstract

The invention relates to a method for redirecting network connection of a virtual machine when being transferred across subnets online, including the steps that: 1, the virtual machine is transferred from a first subnet to a second subnet; 2, a foreign agent arranged in the second subnet sends a registration request to a home agent in the first subnet; 3, after receiving the registration request, the home agent builds a bidirectional data transmission tunnel between the home agent and the foreign agent; 4, the data to be sent to the virtual machine by a communication counterpart terminal is first sent to the home agent and then is sent to the foreign agent by the home agent through the bidirectional data transmission tunnel, and the foreign agent sends the received data to the virtual machine. The method is unnecessary to change the operating system of the virtual machine, can ensure the transparency to the virtual machine in the network redirection process when transferring the virtual machine across the subnets, and can overcome the defect in prior art that data is forwarded between the communication counterpart terminal and the virtual machine through a source host, which leads to the increase of the load of the source host.

Description

technical field [0001] The invention relates to virtual machine technology, in particular to a virtual machine network connection redirection method during cross-subnet online migration. Background technique [0002] In the context of the rapid development of Internet technology, computing in a distributed environment has become increasingly important and has a wide range of application requirements. However, the dynamism and heterogeneity of the wide-area distributed physical resource layer is an unchangeable reality. Therefore, the traditional computing model is showing more and more limitations. In the traditional computing mode, the software is bound to the underlying hardware in a tightly coupled manner. Whether it is a stand-alone mode, a multi-machine collaborative mode, or a networked mode such as a cluster, it is closely related to the heterogeneity, dynamics and distribution of hardware resources. Sex and other characteristics have great contradictions. Thus, a n...

AI Technical Summary

Problems solved by technology

However, the problem brought about by this solution is: after the virtual machine is migrated, the source host still needs to forward the packets interacting between the network and the virtual machine, which will increase the workload of the source host and reduce the operating performance of the entire environment

However, this solution needs to install the mobile IP protocol stack in the virtual machine, that is, the virtual machine operating system needs to be modified

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