SDN-based WLAN hierarchical networking system and method

Abstract

The invention provides an SDN-based WLAN hierarchical networking system and method. The SDN-based WLAN hierarchical networking system comprises an SDN controller and an AC, wherein the AC is in communication connection with the SDN controller and serves as a switching node of a controller of APs connected with the AC and the SDN controller. The AC establishes virtual ports for the APs, sets the states of the virtual ports of all the APs according to the current network environment and reports the states of the virtual ports to the SDN controller; the SDN controller is used for generating management state information according to the states of the virtual ports and transmitting the management state information to the AC; the AC is further used for converting management information, corresponding to the APs, in the management state information into a CAPWAP message and issuing the message to the APs; accordingly, a hierarchical WLAN network architecture integrating the SDN controller, the AC and the APs is realized, WLAN services can be migrated to an SDN conveniently, investment of existing equipment is protected, the advantages of the SDN technology can also be fully utilized, and the practicality is good.

Description

technical field [0001] The present invention relates to the communication field, in particular to an SDN-based WLAN layered networking system and method. Background technique [0002] WLAN (Wireless Local Area Networks, wireless local area network) networking schemes include fat AP (Access Pointer, access node) networking and thin AP+AC (Access Controller, access controller) networking. Among them, in the thin AP+AC networking scheme, the AP is centrally managed by the AC, and the control data needs to pass through the AC. The business data can be processed by the AC according to the needs, and the AC undertakes part of the BRAS (Broadband Remote Access Server, broadband remote access server) function. , has the advantages of good manageability, support for roaming switching, and easy large-scale deployment, and has been widely used in operator networks and large enterprises; but its disadvantage is that the AC is the bottleneck of the entire network, and the physical area o...

AI Technical Summary

Problems solved by technology

[0005] The inventor found in the research that related WLAN networking (for example: the above-mentioned thin AP+AC networking) to SDN migration technology is not ideal in terms of the degree of utilization of existing resources and function optimization. To solve this problem, there is currently no come up with effective solutions

Images