Method for realizing uninterrupted multicast traffic during migration of virtual machine

Abstract

The invention relates to the technical field of computer networks, and discloses a method for realizing uninterrupted multicast traffic during migration of a virtual machine, which comprises the following steps of: copying an XML (Extensible Markup Language) configuration file of the virtual machine to a target host from a source host; establishing connection between the qemu process of the source host and the qemu process of the target host, and migrating the memory data in the virtual machine from the source host to the target host; the method comprises the following steps of: migrating a multi-partition snooping table item, which is related to a virtual machine, on a source host vswitch to a multi-partition snooping table of a target host vswitch, and migrating the multi-partition snooping table item on the source host vswitch to a multi-partition snooping table of the target host vswitch; and the virtualization management platform notifies the source host that the vswitch data migration is completed according to the success of the return of the multi-bridging table item added by the target host. According to the invention, the continuity of receiving the multicast traffic from the multicast source by the virtual machine can be ensured, and the problem that the multicast traffic is interrupted for a period of time due to migration of the existing virtual machine is solved.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a method for realizing uninterrupted multicast traffic during virtual machine migration. Background technique [0002] IGMP Snooping is the abbreviation of Internet Group Management Protocol Snooping (Internet Group Management Protocol Snooping). Outbound interface information, so as to manage and control the forwarding of multicast data packets on the openvswitch, and realize the forwarding of multicast traffic to virtual machines. The detailed description is as follows figure 2 As shown, the IGMP Snooping function is enabled in OVS. There are two multicast groups in the figure. The first two multicast groups are 235.1.2.3, including virtual machines VM-1 and VM-2; the last two multicast groups are 235.4.5.6, Including the virtual machines VM-3 and VM-4, the following two multicast groups are taken as examples to illustrate the multicast router ( figure 2...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a method for realizing uninterrupted multicast traffic during virtual machine migration. When the virtual machine is used as the receiver of multicast traffic, when the virtual machine migrates from the source host to the target host, it can ensure that the virtual machine receives The continuity of the multicast traffic from the multicast source solves the problem that the migration of the existing virtual machine causes the multicast traffic to be interrupted for a period of time

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