Network Security Device Automatic Uplink Failover
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Solution Overview
Problem
Existing network systems face service interruptions and decreased efficiency due to link disconnections, requiring manual troubleshooting that disrupts uninterrupted data transmission.
Innovation Solution
A network security device with paired primary and backup communication ports and a processor that automatically switches traffic flows from a primary to a backup port when link failures occur, ensuring seamless data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual troubleshooting is performed when link disconnection occurs, then the connection can be recovered, but the service system efficiency decreases and service interruption occurs
Solution Approach 1:
The system performs preliminary actions by pre-configuring backup communication ports and establishing backup paths before failures occur. When a link disconnection is detected, the system can immediately activate the pre-prepared backup path without waiting for manual intervention, thus maintaining service continuity and efficiency
Solution Approach 2:
The system implements self-service through automatic fault detection and self-healing mechanisms. The processor continuously monitors link status and automatically switches to backup ports when failures occur, eliminating the need for manual troubleshooting and restoring connections autonomously, thereby maintaining high service system efficiency
2Reliability
If manual troubleshooting is performed, then the connection can be recovered, but uninterrupted service cannot be provided
Solution Approach 1:
Backup communication ports and paths are pre-configured and ready before failures occur. When a link disconnection is detected, the system immediately activates the pre-prepared backup path, minimizing service interruption duration and ensuring continuous service provision
Solution Approach 2:
The system implements continuous monitoring of link status with real-time feedback to the processor. When a disconnection is detected, the feedback trigger initiates automatic switching to backup ports, enabling rapid recovery and minimizing service interruption period
3Reliability
If backup communication ports and automatic switching mechanism are implemented, then service continuity is maintained, but device complexity increases
Solution Approach 1:
The communication interface is segmented into primary and backup ports, allowing independent operation and failure isolation. This segmentation enables automatic switching without requiring complete system redesign, maintaining reasonable complexity while improving reliability
Solution Approach 2:
The system changes the operational state parameter of communication ports (active/standby) based on link status. This parameter-based control simplifies the switching logic and device structure compared to more complex architectural changes, while still achieving service continuity
Data Source
AI summary
A network security device receives a traffic flow through an input port from a source device and forwards the traffic flow through a primary output port to a primary switch. The network security device switches from the primary output port to a backup output port when determining that the traffic flow fails to be forwarded by the primary switch to a destination device, and forwards the traffic flow through the backup output port to a backup switch. The traffic flow that is forwarded from the primary switch to the destination device is changed to be forwarded through the backup switch to the destination device.