Data packet forwarding method and device for virtual machine network

Abstract

The invention relates to a data packet transmitting method and a device of virtual machine network, wherein the method comprises analyzing and obtaining source host machine IP address and source virtual machine MAC address and storing to a data base when a physical network card is monitored to be provided with a data packet which is to be transmitted to a local virtual network card, analyzing and obtaining a destination virtual machine MAC address when the virtual network card is detected to be provided with the data packet which is to be transmitted to network, judging whether the destination virtual machine MAC address is broadcasting MAC address or not, if the destination virtual machine MAC address is broadcasting MAC address, calculating and obtaining a multicast IP address as a destination host machine IP address, if not, inquiring in the data base and obtaining IP address as destination host machine IP address, if the address can not be found, then, calculating the multicast IP address as the destination host machine IP address, and setting the destination host machine IP address into the data packet. The device comprises a module for executing the method. The invention adopts a unicast and multicast combined mode to transmit data in virtual machine network, lowers bandwidth load, and improves the transmission efficiency of the data packet.

Description

technical field [0001] The present invention relates to a virtual machine network technology, in particular to a data packet forwarding method and device for a virtual machine network. Background technique [0002] In recent years, with the maturity of network, communication and other technologies and the deepening of applications, various computing resources, storage resources, data resources, etc. have been aggregated in the network. However, due to the heterogeneity of physical platforms and flexible and diverse application requirements, etc. Various factors make these resources difficult to use efficiently. In view of the above situation, virtual machine technology emerges as the times require, which can effectively utilize and share these resources. The virtualization of computing resources can provide a dynamic construction method, share and dynamically deploy resources according to the requirements of application tasks, so as to dynamically establish a virtual comput...

AI Technical Summary

Problems solved by technology

Due to the excessive dependence of this architecture on the server, it will cause serious bottleneck problems, resulting in insufficient flexibility and efficiency of the entire network.

[0010] From the above introduction, it can be seen that the current distributed virtual machine network technology for virtual computing environments has the following defects: the current virtual machine network based on multi-homed hosts is usually constructed in the form of C / S as an extension of the physical network. network, but the C / S mode relies too much on the processing power of the central node in the network, causing a bottleneck in the network, and the network cannot continue to be stable after the central node is shut down; and because the forwarding between each node requires the service node Participation, resulting in inefficiency and inflexibility of the entire network

[0013] It can be seen from the packet forwarding process of the virtual machine network in the P2P architecture above that in the virtual machine network technology of the P2P architecture, if DHT is used to determine the MAC address of the destination virtual machine, it will easily cause unnecessary maintenance waste

In addition, the data packets sent by the virtual network card need to identify the IP address of the host where the destination virtual machine is located, so as to route in the network. When the virtual network card only records the MAC address of the destination virtual machine, it can only send data in the form of broadcast Packets to all virtual network cards in the virtual machine network will cause a waste of bandwidth resources in the mutual communication of multiple virtual nodes, resulting in low transmission efficiency; transmitting data packets in the form of broadcast will increase network load and affect network transmission speed

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