Access Point Controller Discovery with Secure Device Registration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for automatically discovering a controller in large-scale WiFi networks are time-consuming and complex, often requiring additional server configurations and face challenges in connecting access points to their appropriate controllers, especially when they belong to different organizations in the same subnet.
Innovation Solution
A method involving a device registration platform where controllers are authenticated and authorized through an authorization service, receiving an authorization token, and providing network credentials and access point identifiers, allowing access points to discover their controllers efficiently and securely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual configuration of controller network address is used, then connection reliability is improved, but setup time increases significantly for large-scale networks
Solution Approach 1:
The access point performs automatic self-configuration by discovering and connecting to the controller without manual intervention. The system uses automated discovery mechanisms where the access point queries the network for available controllers and establishes connections automatically, eliminating the need for administrators to manually configure network addresses for each access point.
Solution Approach 2:
The controller is pre-configured with a service identifier and registered with the network before access points need to connect. This preliminary registration enables the controller to be automatically discovered by access points that join the network later, reducing setup time while maintaining reliable connections.
2Ease of operation
If DHCP option 43 or DNS registration is used for automatic discovery, then setup complexity is reduced, but device complexity increases due to additional server configurations
Solution Approach 1:
A service identifier acts as an intermediary mechanism between access points and controllers. Instead of requiring complex DHCP or DNS configurations, the service identifier provides a simple, standardized way for access points to discover controllers directly on the network without involving additional server infrastructure.
3Reliability
If access points use existing discovery techniques in large subnets, then connectivity is improved, but security risks increase due to inability to verify controller authorization
Solution Approach 1:
The system implements a verification feedback mechanism where the controller responds to discovery requests with authorization information. Access points receive and verify controller responses to confirm legitimate authorization before establishing connections, providing feedback that ensures both connectivity and security.
Solution Approach 2:
Controller authorization is verified in advance during the discovery phase before the access point establishes a connection. This preliminary verification ensures that only authorized controllers can be discovered and connected to, preventing security risks while maintaining connectivity.
4Adaptability or versatility
If traditional discovery methods are used across different organizations, then network compatibility is improved, but ease of operation deteriorates due to difficulty in connecting access points to appropriate controllers
Solution Approach 1:
The service identifier mechanism provides a universal discovery method that works across different organizations and network configurations. The same discovery protocol and identifier system can be used regardless of organizational boundaries, making the system universally applicable while simplifying the process of connecting access points to the correct controllers.
Data Source
AI summary
Methods, systems, and devices for facilitating automatic discovery of a controller device by one or more access points of a network, thereby providing a more secure and easier deployment of the access points. For example, a method may include receiving an indication of an authorization grant by a networking device; requesting, by the networking device, an authorization token from a remote authorization service; obtaining, by the networking device and from the remote authorization service, the requested authorization token; and transmitting, by the networking device and to a device registrar, a request to register the networking device with the device registrar, where the request includes the authorization token.