A traffic forwarding method and system based on a virtual switching cluster

Abstract

A traffic forwarding method based on a virtual switch cluster is described. The method includes setting an aggregation group member list to store information about all the members of an aggregation group; setting an aggregation group traffic forwarding member list to store information of aggregation group members for forwarding traffic, wherein the list in an initial state only containing information about local members of the aggregation group; and when it is determined that traffic of a physical device exceeds the total bandwidth of the members in the aggregation group traffic forwarding member list or a threshold value related to the total bandwidth, selecting a nonlocal member from the aggregation group member list and adding the same into the aggregation group traffic forwarding member list, and forwarding traffic according to the changed aggregation group traffic forwarding member list. A traffic forwarding system based on a virtual switch cluster is also described. The disclosure can implement traffic forwarding in a virtual switch cluster scene on the premise of occupying limited bandwidth of a stack link as small as possible, thereby ensuring the traffic forwarding performance in the virtual switch cluster scene.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a traffic forwarding method and system based on a virtual switching cluster. Background technique [0002] A virtual switch cluster (Virtual Switch Cluster, VSC) is an application of network virtualization technology. Generally, multiple physical devices running independently are connected into a virtual joint device through stacking boards. Each physical device discovers other physical devices through a topology protocol, and selects a master device (Master) and a slave device (Slave) according to a policy. In the VSC scenario, there is only one master device, and other devices are slave devices. [0003] Because multiple physical devices are virtualized into one device, the ports on different physical devices can be aggregated into one logical port. Similar to the single device environment, the multi-port link aggregation command can also be used to configure the aggregated p...

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Problems solved by technology

[0004] However, the aggregation port in a single device environment performs traffic sharing among all member ports belonging to the aggregation group based on the hash policy set by the user, while the bandwidth of the stack link between devices in the VSC environment is very limited, so the traffic of the aggregation link across devices For load sharing, the limited bandwidth of the stack link between devices must be taken into consideration. If the traffic sharing policy of a single device environment is applied to a VSC scenario, and load sharing is still performed on all member ports belonging to the aggregation group, the bandwidth of the stack link may be limited. Limit, affecting traffic forwarding performance

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