Data forwarding method and system in virtual network

Abstract

The invention provides a data forwarding method and system in a virtual network. The method comprises the following steps: when carrying out across subnet data forwarding in the virtual network, acquiring a data message transmitted by a first virtual machine, and judging whether the data message needs to be transmitted across the subnet; and if yes, performing MAC address and IP address modification on the data message, and then making the first virtual machine directly transmit the modified data message to a second virtual machine. Through the scheme of the invention, the data message is directly transmitted and received between the virtual machines without being forwarded via a virtual router, thereby improving the east-west transmission efficiency and reducing the network resource competition on a host of the virtual router.

Description

technical field [0001] The invention belongs to the field of computer networks, in particular to a data forwarding method and system in a virtual network. Background technique [0002] At present, the cloud data center usually uses the overlay network technology to transmit the data traffic of the virtual network. For the cross-subnet east-west traffic (generally refers to the communication traffic inside the virtual network), it is forwarded through the virtual router (vRouter). In addition, The virtual router also undertakes the forwarding of north-south traffic (generally referring to the interactive traffic between the virtual network and the public network). [0003] figure 1 is a schematic diagram of a typical virtual network, such as figure 1 As shown, the dotted line is a logical virtual network, and the solid line is a physical bearer network. The network includes multiple virtual machines VM1-VM4, and each virtual machine is connected to the same virtual router v...

AI Technical Summary

Problems solved by technology

[0007] However, east-west traffic belongs to the internal traffic of the virtual network. Generally speaking, the traffic will be very large. These traffics are concentrated on the vRouter host, which may easily cause competition for network resources on the vRouter host.

At this time, the impact of network resource competition includes vRouter east-west and north-south traffic, and affects the traffic efficiency of other vRouters

In addition, cross-subnet east-west traffic needs to be encapsulated and unpacked multiple times by VXLAN. The three-layer forwarding of vRouter consumes the CPU performance of the host and affects communication efficiency.

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