Method for implementing virtual network and virtual network

Abstract

The embodiment of the invention provides a method for implementing a virtual network and the virtual network. The method comprises the following g steps: step (1), obtaining a transfer type, a source and a destination of a data packet sent by a host computer by a controller of the virtual network; step (2), formulating a forwarding strategy according to the transfer type, a port identifier of the source and a target identifier of the destination; and step (3), sending the forwarding strategy to each virtual access exchanger and each middle exchanger through which the data packet is to be passed, and executing the forwarding strategy to the received data packet received by the virtual access exchanger and the middle exchanger. In the forwarding process of the data packet, the controller can obtain various attributes of the data packet as target identifiers, formulate the forwarding strategy according to the target identifiers and forward the data packet more intensively and flexibly; and multi-user and multi-path forwarding is supported, flow load is balanced, and network resources are utilized more efficiently.

Description

technical field [0001] The invention relates to data exchange technology, in particular to a method for realizing a virtual network and a virtual network. Background technique [0002] The data center provides resource leasing services. For different tenants, the data center needs to provide a virtual network for data exchange, so that tenants can use resources without interfering with each other in the virtual network. At the same time, with the development of data center business, the data center has increasingly higher requirements on the network, requiring larger bandwidth and more reliable data network. [0003] The number of tenants may reach more than hundreds of thousands. In the prior art, a virtual local area network (vLan, Virtual Local Area Network) is generally used to isolate tenants. Since the maximum number of vLans is 4096, the number of tenants is limited, which cannot meet the data requirements. The center provides business needs for multiple tenants. Su...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for implementing a virtual network and a virtual network, to solve the problem that due to the separation of the underlying IP network and the virtual network, when the data packets of the virtual network are transmitted in the underlying IP network, the IP network cannot recognize the data The information encapsulated inside the packet cannot be optimized or other strategies can be implemented according to the needs of the tenants; the virtual network does not recognize the forwarding method of the data packet in the underlying IP network, and cannot control the forwarding process

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