Method and device for determining virtual machine migration

Abstract

The embodiment of the invention provides a method and device for determining VM migration. The method comprises the steps that after a VM is migrated, immigrated equipment obtains an MAC address of the VM through a local interface, and if the immigrated equipment judges that the MAC address is learned from emigrated equipment before, it is determined that the VM is migrated. The method further comprises the following steps: the immigrated device sends an ARP request to the VM, and further confirms that the VM is migrated in response to the received response of the VM. According to the method provided by the embodiment of the invention, after the VM is migrated, the immigration equipment of the VM can determine that the VM is migrated only by acquiring the MAC address of the VM. The immigration equipment does not need to be limited by the virtual machine to send the free ARP message to sense VM immigration, so that the compatibility of virtual machine configuration is effectively improved.

Description

[0001] This application is a divisional application of a Chinese patent application submitted to the State Intellectual Property Office of China with the application number 201610777000.1 and the filing date on August 30, 2016. technical field [0002] The present application relates to the field of communication technology, and in particular to a method and device for determining virtual machine (English: Virtual Machine, VM) migration. Background technique [0003] In the multi-tenant environment of cloud computing, each tenant needs to allocate a logical network that can be well isolated from other logical networks. The isolation of logical networks can be achieved through Virtual Extensible Local Area Network (VXLAN) technology. to realise. The VXLAN network is identified by a 24-bit VXLAN network identifier (VXLAN network identifier, VNI). [0004] Generally, VXLAN will be deployed in the data center (English: Data Center, DC) network, and the VXLAN tunnel endpoint (En...

AI Technical Summary

Problems solved by technology

The RARP message only carries the media access control (English: Media Access Control, MAC) address of the virtual machine. In the prior art, the migrated VTEP cannot confirm the migration of the virtual machine according to the RARP message.

[0007] Furthermore, in the prior art, the VTEP where the virtual machine migrates out cannot quickly sense the migration of the accessed virtual machine, which leads to the inability of the network to perform route convergence in a timely manner.

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