Dynamic GRE Tunnel Setup via CAPWAP Address Exchange
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Solution Overview
Problem
The existing GRE tunnel configuration requires static address configuration, which is labor-intensive and error-prone, especially with a large number of access points, increasing operational costs and complexity.
Innovation Solution
A method where access points and gateways dynamically obtain and store each other's addresses through interaction processes, such as CAPWAP or Radius protocols, eliminating the need for static configuration and enabling flexible and efficient GRE tunnel establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static configuration of GRE tunnel addresses is implemented, then tunnel connectivity is ensured, but configuration workload and error rate increase significantly
Solution Approach 1:
The AP and GW automatically obtain each other's addresses through interaction protocols (CAPWAP or Radius) and perform self-configuration of GRE tunnel endpoints, eliminating manual configuration requirements while ensuring accurate connectivity
Solution Approach 2:
The addresses of AP and GW are obtained in advance through protocol interactions before GRE tunnel establishment, allowing the tunnel configuration to be automatically prepared with correct endpoint addresses before actual data transmission begins
2Reliability
If static configuration is performed for each AP, then tunnel setup is achieved, but operational costs and complexity increase
Solution Approach 1:
Each AP automatically obtains its own address and the GW's address through protocol interactions, and autonomously configures the GRE tunnel without external intervention, reducing management complexity while ensuring reliable setup
Solution Approach 2:
Address information is obtained in advance through CAPWAP or Radius protocol interactions before GRE tunnel establishment, allowing automatic configuration without manual intervention for each AP, thereby reducing operational complexity
Data Source
AI summary
A method for implementing a generic routing encapsulation (GRE) tunnel, an access point (AP), and a network system. The method includes establishing a Control And Provisioning of Wireless Access Points (CAPWAP) tunnel with an access controller (AC), receiving addresses of at least two gateways, establishing at least two GRE tunnels coupled to the gateways respectively according to the addresses of the at least two gateways, and selecting one of the at least two GRE tunnels to transmit data.