Neighbor discovery method and device

Abstract

The invention provides a neighbor discovery method and device. Part of the process of an OpenFlow controller for collecting network topology is shared by an OpenFlow device, and the network topology is reported by the OpenFlow device actively, so that the network topology collecting time of the OpenFlow controller is shortened, and message interaction between the OpenFlow controller and the Openflow device is effectively reduced.

Description

technical field [0001] The present application relates to network communication technology, in particular to a neighbor discovery method and device. Background technique [0002] Software Defined Network (SDN: Software Defined Network) is a new type of network architecture. Its core idea is to separate the control plane and forwarding plane of network equipment, and provide core network and application innovation through centralized and flexible control of network traffic. good platform. [0003] OpenFlow is a communication interface standard between the controller and the forwarding layer defined in the SDN architecture. OpenFlow allows the controller to directly access and operate the forwarding plane of network devices, which may be physical or virtual. The OpenFlow network consists of OpenFlow devices (Switch) and OpenFlow controllers (Controller) through secure channels (OpenFlow channel), such as figure 1 shown. [0004] In the OpenFlow network, the OpenFlow contro...

AI Technical Summary

Problems solved by technology

Generally, SDN networks, especially virtual switch networks, often use fully connected networking. At this time, assuming that there are M devices in the network, there will be M factorial links in the network, which will cause OpenFlow The controller needs to send and receive a large number of LLDP packets, increasing the load on the OpenFlow controller

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