Cluster expansion method, cluster communication system and communication system and method

Abstract

The embodiment of the invention provides a cluster expansion method, a cluster communication system and a communication system and method so that complexity of a DUT is reduced and topology of an original three-layer network is maintained. The method comprises that: at least two devices under test DUT arranged between a first switching device and a second switching device transmit a link aggregation control protocol LACP message in an unvarnished way so that the first switching device and the second switching device are enabled to negotiate aggregation characteristics of a link aggregation group LAG; and after negotiation of the aggregation characteristics of the link aggregation group LAG is succeeded, flow is distributed to the at least two devices under test DUT to perform transmission by the first switching device and the second switching device. Realization of a complex routing protocol on the DUT is avoided by the method, requirements for the DUT are reduced and network properties and the network topology of the DUT are not rigidly required so that the original three-layer network topology can be maintained to be unchanged, and thus complexity and high cost caused by changing of the network topology structure can be avoided.

Description

Technical field [0001] The present invention relates to the field of Internet communication, in particular to a cluster expansion method, a cluster communication system, and a communication system and method. Background technique [0002] Internet Data Center (IDC) provides large-scale, high-quality, safe and reliable professional server hosting, space rental and network wholesale for Internet Content Provider (ICP), enterprises, media and various websites Bandwidth and other services. IDC is a hosting place for hosting enterprises, merchants or website server groups. It is the infrastructure on which various modes of e-commerce depend for safe operation, and it also supports enterprises and their business alliances (its distributors, suppliers, customers, etc.) A platform for implementing value chain management. IDC is not only a network concept, but also a service concept. It forms a part of the basic network resources and provides a high-end data transmission service and hig...

AI Technical Summary

Problems solved by technology

[0006] 1) The complexity of the DUT is increased, the reason is that the above-mentioned existing A / A scheme relies on the VRRP protocol, and the DUT needs to support the VRRP protocol;

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