Static Link Aggregation Backup Port Switching After Link Failure

The patent applies preliminary action by pre-configuring backup ports and establishing priority relationships before any link failure occurs. The system proactively identifies and designates backup ports with specific priorities, so that when a primary link fails, the switch can immediately activate the pre-prepared backup path without negotiation delays, thus maintaining both configuration stability and fault tolerance.

The patent implements beforehand cushioning by creating a buffer mechanism through priority-based backup port configuration. The system prepares multiple backup ports with different priority levels in advance, cushioning against the impact of link failures. When primary links fail, the pre-established priority queue enables immediate failover to appropriate backup ports, preventing bandwidth loss and maintaining system reliability.

The patent applies preliminary action by pre-establishing priority relationships among backup ports before failures occur. Instead of negotiating backup paths in real-time like LACP, the system proactively configures priority queues for backup ports, enabling immediate activation upon failure. This maintains flexibility through multiple backup options while achieving fast response by eliminating negotiation time.

The patent extracts the negotiation process from the failover mechanism. By separating the priority configuration (done in advance) from the failover execution (done immediately upon failure), the system removes the time-consuming LACP negotiation step. The priority relationships are extracted and stored beforehand, allowing direct activation of backup ports when needed, thus achieving both flexibility and speed.

The patent combines manual configuration precision with automatic failover adaptability through preliminary action. The administrator manually configures backup ports and their priorities with precise control over which ports serve as backups and in what order. This maintains configuration precision while the system automatically monitors link status and activates appropriate backup ports upon failure, achieving both precise manual control and adaptive automatic response.

The patent enables self-service by allowing the system to automatically monitor link health and activate backup ports based on pre-configured priorities without requiring manual intervention. The administrator performs the one-time precise manual configuration of backup relationships, then the system autonomously manages failover operations, combining the precision of manual setup with the adaptability of automatic failure response.