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SDN network piggyback type service quality acquisition method based on LLDP protocol

A technology of service quality and collection method, which is applied in the field of piggyback service quality collection of SDN network based on LLDP protocol, to achieve the effect of reducing additional traffic

Inactive Publication Date: 2018-02-09
SOUTHWEST UNIVERSITY FOR NATIONALITIES
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Problems solved by technology

In order to transmit the traffic detection results from the Agent to the Collector, a dedicated InMonsFlow protocol is required to encapsulate the data. The size of each sFlow packet is 592 bytes (may vary depending on the configuration). By default, the sFlow data The collection interval is 1 second, which generates a lot of extra traffic and competes with user traffic for bandwidth

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  • SDN network piggyback type service quality acquisition method based on LLDP protocol
  • SDN network piggyback type service quality acquisition method based on LLDP protocol
  • SDN network piggyback type service quality acquisition method based on LLDP protocol

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[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0048] Step 1. Set the sampling interval of periodic QoS over LLDP. The sampling interval is the interval at which the controller sends LLDP packets. If not explicitly set, the default is 15 seconds. In the specific implementation of this solution, considering that the original timing period of the LLDP protocol of 15 seconds has poor flexibility in collecting service quality, the corresponding northbound interface RESTAPI of the controller is designed to adjust the period for sending LLDP packets, that is, , it is executed periodically, and the timing period is adjustable. The REST API for adjusting the period is: http: / / {ip}:8080 / wm / qosoverlldp / Lldptoallinterval / {interval} / json, where {ip} is the one that deploys the Floodlight controller. Th...

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Abstract

The invention discloses an SDN network piggyback type service quality acquisition method based on the LLDP protocol. The method comprises the steps of setting a sampling interval of a periodic QoS over LLDP; A controller generating a QoS TLV; the controller sending Packet_out to a switch; the switch filling the service quality information to the QoS TLV; the LLDP carrying out multicast forwarding;a receiver switch sending a packet-in message; and the controller discovering a link with service quality information. The method has the advantages that in the process that the SDN controller performs topology discovery by utilizing the LLDP protocol, the service quality information is collected in a piggyback way. The characteristics of the LLDP topology discovery process are effectively utilized. Service quality is collected under the condition that the special protocol is not introduced, and the extra flow is reduced. Meanwhile, the operation flow of the OpenFlow south interface of the SDN cannot be influenced, and the non-invasive design is realized. The design is based on SDN characteristics, and the service quality information can be acquired without introducing extra network monitoring systems.

Description

technical field [0001] The invention relates to the technical field of Internet information, in particular to an LLDP protocol-based SDN network piggyback service quality collection method. Background technique [0002] Software-Defined Networking (SDN) was proposed by Stanford University in the United States. It is based on the OpenFlow protocol and is designed to build a network innovation platform. The biggest feature of SDN is that it has a loosely coupled control plane and data plane, supports centralized network state control, and realizes the transparency of the underlying network facilities to the upper-layer applications. SDN often uses the OpenFlow protocol as the southbound interface with the underlying network equipment (that is, the interface that the controller interacts with the network equipment), and has flexible software programming capabilities, which makes the automatic management and control capabilities of the network unprecedentedly improved and can ef...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/751H04L45/02
CPCH04L45/02H04L43/55Y02D30/00
Inventor 陈曦吴俊磊吴涛
Owner SOUTHWEST UNIVERSITY FOR NATIONALITIES
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