SDN network and networking method thereof

Abstract

The invention provides an SDN networking method. The SDN networking method comprises the following steps: selecting ports n 1 requiring SND from a network according to a given traditional network topology structure, and carrying out SND on these ports; calculating switches needing to be upgraded according to the traditional network topology structure and the port set n 1, upgrading these switches to SDN switches, and deploying a controller for the SDN switches; issuing a flow table by the controller, so that the SDN switches send LLDP frames and broadcast frames, and the SDN switches receiving LLDP packets and broadcast packets or only receiving the LLDP packets send the received packets to the controller, and drawing network topology by the controller according to the information of the packets uploaded by the SDN switches. By adopting the SDN networking method provided by the invention, the controller can globally manage and control the network, so as to conveniently deploy a variety of SDN applications, and the cooperation of the SDN switches with the traditional switch is more intelligent and controllable, the upgrading cost is lower and the resource utilization rate in upgrading is higher.

Description

technical field [0001] The invention relates to the technical field of network networking, in particular to an SDN network and a networking method thereof. Background technique [0002] After the network in the traditional IT architecture is deployed and launched according to business needs, if the business needs change, it is very cumbersome to re-modify the configuration on the corresponding network devices (routers, switches, firewalls). In the rapidly changing business environment of the Internet / mobile Internet, the high stability and high performance of the network are not enough to meet business needs, and flexibility and agility are more critical. SDN, that is, Software-Defined Network (Software-Defined Network), what it does is to separate the control rights on network devices and manage them by a centralized controller without relying on the underlying network devices (routers, switches, firewalls). Differences in underlying network equipment. The control right i...

AI Technical Summary

Problems solved by technology

But in a campus network or enterprise network, where the endpoints are access points, this solution means upgrading thousands of access points, resulting in a high budget

At the same time, this deployment scheme makes the controller have almost zero control over the core part of the network, and functions such as load balancing and path selection cannot be applied. This is the biggest shortcoming of this scheme

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