Proactive Optical Restoration System for Network Resilience
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Solution Overview
Problem
Current optical network architectures lack effective protection against signal failures, relying on costly IP layer mechanisms and requiring additional capacity for protection, which increases network costs and complexity.
Innovation Solution
A proactive optical restoration system that uses a communication module and optical path manager to establish a secondary optical path before performance degradation crosses a threshold, allowing seamless data transfer between routers via a link diverse or node disjoint path, reducing reliance on IP layer resources and maintaining network resilience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IP layer protection mechanisms are used, then signal failure protection is provided, but network cost and complexity increase due to additional capacity requirements
Solution Approach 1:
The system proactively establishes a backup optical path before the primary path fails. The optical path manager pre-configures the backup path and triggers its activation when degradation thresholds are approached, eliminating the need for complex IP layer protection mechanisms and reducing network complexity while maintaining reliability
Solution Approach 2:
The invention extracts the protection function from the IP layer and implements it at the optical layer. By using optical restoration mechanisms directly in the DWDM layer, the system eliminates the need for IP layer protection mechanisms, reducing network complexity and cost while providing signal failure protection
2Reliability
If IP layer protection mechanisms are used, then signal failure protection is provided, but network cost increases due to additional capacity requirements
Solution Approach 1:
The system proactively establishes a backup optical path before the primary path fails. The optical path manager pre-configures the backup path and triggers its activation when degradation thresholds are approached, eliminating the need for complex IP layer protection mechanisms and reducing network complexity while maintaining reliability
Solution Approach 2:
The invention extracts the protection function from the IP layer and implements it at the optical layer. By using optical restoration mechanisms directly in the DWDM layer, the system eliminates the need for IP layer protection mechanisms, reducing network complexity and cost while providing signal failure protection
3Reliability
If optical restoration is implemented, then network resilience is enhanced, but system complexity increases due to proactive path establishment and switching
Solution Approach 1:
The optical path manager autonomously monitors optical path quality metrics and automatically triggers backup path activation when thresholds are exceeded. The system self-manages the restoration process without requiring complex external control mechanisms, enhancing network resilience while keeping the implementation relatively simple
Solution Approach 2:
The system continuously monitors optical path performance metrics and uses this feedback to trigger proactive backup path activation. This closed-loop mechanism enables automatic response to degradation conditions, improving network resilience through simple yet effective feedback-driven restoration
Data Source
AI summary
A router configured to communicate data with a destination router over an IP path that includes an IP link that uses a first optical path. The router configured to proactively maintain the performance of the communication of data. The router configured to receive a signal to move the communication off of the first optical path, before performance of the first optical path has failed. The router configured to establish a second optical path to the destination router an associate the IP link with the second optical path and move the communication of data with the destination router to the second optical path. The router may optionally be configured to tear down the first optical path. The trigger received by the router may be an indication of a performance degradation of the first optical path or an indication of a router interface used by the IP link being switched into maintenance mode.