System and method for elastically cutting virtual network flow table in multi-tenant software-defined network

Abstract

Manage flow table resources in a multi-tenant software-defined networking (SDN) environment. Soft Partitioning Resource Manager (Soft Partitioning Resource Manager, SPRM) is mainly managed by the following three solutions: (1) Mixed mode: SPRM uses two modes for mixed processing in the management process: the supervision process is under the intermediary controller The traffic bar is checked first, and the recording process is to download the traffic bar first and then release the subsequent processing to reduce the delay in management; (2) The least recently used part timeout reset (Least recently used- Partial Timeout Reset, LRU‑PTR) implementation module: SPRM makes the switch actively report the idle state of the traffic bar by cutting the traffic bar, which is used to select the target that needs to be replaced; (3) Configure the dynamic upper limit module of tenant resources: SPRM sets a dynamic upper limit on usage per tenant.

Description

technical field [0001] The present invention relates to a mechanism and method applied to a multi-tenant software-defined network (Multi-tenant SDN). If flow table (flow table) resources are not cut and managed, the problem of resource snatching will be caused, and a large number of packets will flow in ( packet_in) events cause a lot of network latency. If flow table resources are managed in a hard-cut manner, it will cause waste of resources, reduce flow table usage, and generate a large number of packet_in events, resulting in a large amount of network waiting time. The method proposed by the present invention can reduce a large number of packet_in and improve resource utilization, and there is no problem of resource snatching. Background technique [0002] Software Defined Networking (SDN) is an emerging network architecture in recent years. Its concept is to separate the control-plane function of the network from the data-plane function. In the data layer, how packets...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to design a resource management method in a multi-tenant software-defined network (SDN) network environment. In such an environment, multiple tenants share the same physical resource. If multiple users want to set traffic bars, they need to After the intermediary controller is set, the size of the physical resource flow table is limited. If the flow table is full, the next request will be rejected by the intermediary controller. At this time, the user who issued this request will generate a large amount of traffic because the flow bar cannot be set. Packet inflow (packet_in), which in turn causes a lot of burden on the tenant controller and generates a lot of network latency

If resources are not cut due to sharing and the flow table is full due to heavy use by a certain user, it is called resource occupation. waste, so the management mechanism method of the present invention is designed to solve these two problems

Images