Dynamic RADIUS Load Sharing for Access Servers
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Solution Overview
Problem
Traditional RADIUS load sharing in broadband remote access servers is inflexible and cannot adjust to the current state of RADIUS servers, leading to authentication timeouts and reduced user access performance when many users are accessing the network.
Innovation Solution
An access server dynamically determines a load sharing ratio among multiple RADIUS servers based on their respective state information, allowing for dynamic adjustment of load sharing to improve user access performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed load sharing ratio is configured on BRAS, then device complexity is reduced, but reliability deteriorates when RADIUS servers are busy
Solution Approach 1:
The patent implements dynamic load sharing by having the BRAS periodically query the operational status of RADIUS servers and adjust the load sharing ratio accordingly. Instead of using a fixed configuration, the system dynamically adapts to server availability and load conditions, ensuring reliable authentication while managing complexity through automated status-based adjustments.
Solution Approach 2:
The patent introduces a feedback mechanism where the BRAS queries RADIUS servers for their operational status and uses this information to adjust the load sharing ratio. This closed-loop feedback system allows the BRAS to respond to server availability changes, improving reliability without requiring complex manual reconfiguration.
2Productivity
If multiple RADIUS servers are deployed for load sharing, then productivity is improved, but reliability deteriorates when servers are overloaded
Solution Approach 1:
The patent enables dynamic adaptation of load sharing ratios based on real-time server status queries. When servers are overloaded, the system automatically adjusts the distribution ratio to balance the workload, ensuring that authentication requests are handled reliably across multiple servers while maintaining high processing capacity.
Solution Approach 2:
The patent changes the load sharing parameter dynamically based on server operational status. By querying server availability and adjusting the load sharing ratio as a parameter, the system optimizes both productivity and reliability, preventing authentication failures during high-load periods while maintaining efficient resource utilization.
Data Source
AI summary
A load sharing method, system, and access server has been disclosed. The load sharing method includes: sending request information to at least two authentication authorization accounting servers, receiving respective state information sent by the at least two authentication authorization accounting servers according to the request information, determining a load sharing ratio among the at least two authentication authorization accounting servers according to the respective state information, and sharing loads among the at least two authentication authorization accounting servers according to the load sharing ratio. The access server can adjust the load sharing ratio among the authentication authorization accounting servers dynamically, which improves user access performance.