Distributed Line Card Link Switching via Warning Message Broadcast
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In distributed telecommunications networks, existing link switching methods fail to synchronize switching information to other line cards in a timely manner, leading to inefficiencies and potential message loss when switching between host and backup links.
Innovation Solution
A method and system where a line card broadcasts or multicasts a warning message via a broadcast or multicast group, allowing for direct execution of link switching on other line cards, eliminating the need for centralized synchronization and enhancing switching efficiency by utilizing a switching network for message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If link switching is performed by a line card in a distributed system using centralized synchronization via main control board, then switching information can be synchronized to other line cards, but the switching efficiency depends on message synchronization efficiency between boards which is uncontrollable and may cause message loss
Solution Approach 1:
The patent extracts the warning message generation and distribution function from the centralized main control board to the distributed line cards themselves. When a link failure is detected, the local line card generates and broadcasts the warning message directly to other line cards via the switching network, eliminating the need for centralized message synchronization through the main control board and thereby improving switching efficiency while maintaining reliability
Solution Approach 2:
The patent merges the functions of link failure detection, warning message generation, and switching information distribution into a single distributed process at the line card level. This integration allows line cards to autonomously handle both detection and notification, removing the bottleneck of centralized message synchronization and enabling faster, more reliable link switching across the distributed system
2Loss of time
If a broadcast or multicast group is established for warning message transmission, then timely notification can be achieved across all line cards, but the system complexity increases due to group management requirements
Solution Approach 1:
The patent uses broadcast or multicast groups to create copies of the warning message and distribute them simultaneously to all line cards in the system. This copying mechanism enables parallel notification delivery, significantly reducing the time required for warning message transmission compared to sequential unicast methods, while the group management overhead is minimized by leveraging existing network infrastructure
Data Source
AI summary
The disclosure provides a method and system for link switching. The method includes: acquiring a warning message, wherein the warning message is sent via broadcast or multicast by a line card where a failure of a link occurs; executing link switching according to the warning message. Through the technical solutions provided by the disclosure, the efficiency of the link switching in a distributed system is improved.