Elephant-flow load balancing transmitting method and device

Abstract

The invention provides an elephant-flow load balancing transmitting method and device. The elephant-flow load balancing transmitting method comprises the steps that, after each statistical cycle is started, whether a current flow needs to be switched to any other transmission port of an exchanger or not is judged in sequence; if yes, an output port meeting switching conditions is searched; after the flow is switched to the output port meeting the switching conditions, the output port meeting the switching conditions is locked instantly, and an election right of the output port is stopped; the output port is unlocked after at least one statistical cycle, and the election right of the output port is recovered; if not, the flow is transmitted through a current transmission port. After each transmission port of the exchanger receives any one flow, the corresponding transmission port is locked instantly, and the election right of the transmission port is stopped; the corresponding transmission port is unlocked after at least one statistical cycle, the dynamic load balancing performance of the exchanger is effectively improved, and further the situations of transmission congestion and packet loss are avoided.

Description

Technical field [0001] The invention relates to the field of network communication, and in particular to a method and device for large-flow load balancing forwarding. Background technique [0002] In modern data center networks, the mainstream bandwidth of server connections has tended to 10G rates. With the advancement of technology, it is expected that 40G access rates will gradually appear. From the perspective of network equipment bandwidth, the bandwidth capabilities of TOR switches and core switches also need to be improved. Thus, from the perspective of network bandwidth utilization, the research on load balancing technology has also become a current hot spot. [0003] In a traditional data center, the information that participates in the transfer is called a flow. The full English name of the flow is "Flow". A Flow is defined according to message characteristics and attributes such as interfaces. The traditional way to define a Flow is: source Mac address; destination Mac a...

AI Technical Summary

Problems solved by technology

When the flowLet-based load balancing technology is transmitting flows, especially elephant flows, when multiple flows meet the switching conditions at the same time, multiple flows are simultaneously switched to the same path on the same transmission port, which will cause congestion on the switched transmission port , and the impact of this kind of congestion is even greater than that of not doing dynamic switching

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