VIRTUAL MACHINE MIGRATION METHOD, SWITCH, VIRTUAL MACHINE SYSTEM

摘要

Provided are a virtual machine (VM) migration method, a switch, and a virtual machine system, which belong to the field of communications technologies. The method according to the embodiment of the present invention comprises: receiving a message sent from a server, wherein the message is used to enable a switch to find a connected virtual machine interface; acquiring, from the message, an identification for indicating that the virtual machine is migrated; judging, according to the identification for indicating that the virtual machine is migrated, whether the virtual machine is a virtual machine that is migrated into the server. The switch comprises a receiving module and a first acquisition module. The virtual machine system comprises a server and a switch. In the embodiment of the present invention, the message sent from the server is received, and whether a newly added virtual machine is one that is newly established or migrated is judged according to an identification field in the message. In this way, compared with the prior art, it can be accurately known whether a virtual machine is migrated into the server, and a service binding relation is pre-established for the migrated virtual machine, thereby improving the real-timeliness of accessing services after migration of the VM.