Network management method and system supporting elephant flow, interchanger and network

Abstract

The invention discloses a network management method and system supporting elephant flow, a network switch and a communication network. The network management method supporting the elephant flow comprises the following steps: when the elephant flow is detected in the network, a source address and a target address of the elephant flow are extracted, a plurality of paths between the source address and the target address are acquired, and weight of corresponding paths which support the elephant flow is calculated according to network loads and network topologies of the paths; the network management system generates a forwarding table of the network switch and sends the forwarding table to the network switch, wherein the forwarding table comprises the weight of the corresponding paths which support the elephant flow and an operational order of the network switch, and therefore the network switch can execute the forwarding table and distribute the rate of the elephant flow according to the weight of the corresponding paths. By the adoption of the network management method and system, the flux of the communication network where the elephant flow exists can keep balanced, network performance is improved effectively, and the resource utilization rate is also increased effectively.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a network management method supporting elephant flow, a network management system, a network switch and a communication network. Background technique [0002] Existing multi-path routing technologies, such as Equal-Cost Multi-path Routing (ECMP), etc., use static hash mapping technology based on data flow to randomly split the flow into multiple available equal-cost paths. However, all data streams are not equal, either in their size (number of bytes), or in their duration, so this simple strategy is not enough to prevent network hotspots. This hash-map-based strategy is only effective if there are only mouse flows (data flows with small byte counts) and no elephant flows (data flows with large byte counts) in the network. In particular, two long-lived elephant flows may map to the same path for a long time, and the resulting congestion will degrade network performance while...

AI Technical Summary

Problems solved by technology

In particular, two long-lived elephant flows may map to the same path for a long time, and the resulting congestion will degrade network performance while there may be spare capacity on alternate paths in the network. For use, so using existing multi-path routing technology, it is easy to cause a decrease in network performance in the presence of elephant flows

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