Network Access Mode Detection Using Simultaneous PPPoE and DHCP Requests
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Solution Overview
Problem
Existing methods for automatically determining Internet access modes, such as PPPoE and DHCP, often result in inaccurate mode detection, leading to unavailability of network services due to premature termination of detection processes.
Innovation Solution
A method and device that continue sending PPPoE request messages after receiving a DHCP response, switching to PPPoE mode if a PPPoE response is received within a set time, ensuring preference for PPPoE mode detection, which is more likely to succeed than DHCP mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the terminal stops detection after receiving a DHCP response message first, then the detection process is completed quickly, but the mode determination becomes inaccurate when PPPoE should be used
Solution Approach 1:
The terminal performs preliminary detection of both DHCP and PPPoE modes simultaneously by sending both request messages at the beginning, rather than sequentially. This allows the terminal to have both detection processes underway before making a final determination, preventing premature termination of PPPoE detection when DHCP responds first.
Solution Approach 2:
The terminal maintains continuous detection of both DHCP and PPPoE modes throughout the process. When a DHCP response is received first, the terminal does not immediately stop PPPoE detection but continues it for a predetermined time to ensure accurate mode determination, especially in scenarios where PPPoE should be the preferred mode.
2Device complexity
If the terminal determines DHCP mode when DHCP server is closer, then the detection process is simple, but Internet access fails when DHCP server cannot provide upstream connection
Solution Approach 1:
The terminal performs preliminary detection of both DHCP and PPPoE modes simultaneously by sending both request messages at the beginning, rather than sequentially. This allows the terminal to have both detection processes underway before making a final determination, preventing premature termination of PPPoE detection when DHCP responds first.
Solution Approach 2:
The terminal uses feedback from both DHCP and PPPoE detection processes to make the final mode determination. By continuing PPPoE detection for a predetermined time after receiving DHCP response, the terminal gathers additional information that helps determine the most reliable access mode, ensuring Internet access availability even when DHCP server cannot provide upstream connection.
Data Source
AI summary
The present invention provides a processing method and processing device for automatically setting an Internet access mode. The method includes: separately sending a PPPoE request message and a DHCP request message; if a DHCP response message corresponding to the DHCP request message is received first within a set time, determining that the Internet access mode is a DHCP mode; if a PPPoE response message corresponding to the PPPoE request message is received later within the set time, determining that the Internet access mode switches from the DHCP mode to a PPPoE mode. Embodiments of the present invention can improve accuracy of mode detection.