Multi-data center interconnection communication method and DCI equipment

Abstract

The invention discloses a multi-data center interconnection communication method and DCI equipment. The method comprises the following steps: a first DCI device forwards a second VXLAN message, obtained by mapping a first VNI of a source data center in a first VXLAN message to a public VNI, to a second DCI device; the second DCI device forwards a third VXLAN message, obtained by mapping the publicVNI in the second VXLAN to the second VNI of a destination data center, to a second VTEP device; and the second VTEP device forwards a VLAN message obtained by decapsulating the third VXLAN messageto a destination host. When the cross-data-center VXLAN message is forwarded by the public VNI, each data center does not need to uniformly allocate the same VNI according to the tenants, and each data center can independently allocate tenant resources, so that the flexibility of data center deployment and planning is improved, and the difficulty of cross-data-center interconnection is reduced.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a multi-data center interconnection communication method and DCI equipment. Background technique [0002] When multiple data centers are interconnected, the current implementation requires that the same virtual extended local network identifier (Virtual eXtensible Local Area Network Identifier, VNI) assigned to the same tenant (virtual machine with the same gateway address) in all data centers be the same, otherwise it cannot Realize Layer 2 traffic and Layer 3 traffic interworking. [0003] However, in this deployment method, resources among multiple data centers need to be allocated uniformly and cannot be changed at will, and all data centers plan the same VNI according to tenants. Therefore, it increases the difficulty of data center planning in disguise. For example, if a new tenant is added to a data center, and the tenant plans to allocate a VNI of...

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Problems solved by technology

On the other hand, if other data centers do not reserve resources for them, when multiple data centers are interconnected, the resources allocated by tenants need to be re-planned and allocated, which not only increases the difficulty of operation and maintenance, but also leads to user business Interruption, this is unacceptable

[0004] It can be seen that in the existing implementation scheme of multiple data center interconnection, there are disadvantages such as poor flexibility in data center deployment and resource planning, and high difficulty in cross-data center interconnection.

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