Layer-2 Mesh Flooding Limit via Edge Node Feedback
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Solution Overview
Problem
Current Layer-2 mesh networks face challenges in maintaining continuous data communication, leading to costly and complex failover systems due to packet loss, which can cause production errors and equipment damage, especially in industrial processes that require constant communication.
Innovation Solution
Implementing a Layer-2 mesh replication overlay with a virtual overlay that replicates Ethernet frames across multiple paths without central control, ensuring zero packet loss and using edge nodes to classify and modify frames for replication, while stopping unnecessary flooding by identifying destination nodes within the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Layer-2 mesh flooding is implemented to ensure continuous data communication, then reliability is improved, but network resources are wasted due to unnecessary flooding to all nodes
Solution Approach 1:
The patent implements feedback mechanisms where edge nodes send notifications about destination addresses and flooding status to other nodes in the mesh. This allows nodes to receive feedback information and adjust their flooding behavior accordingly, stopping unnecessary flooding once the destination is identified, thus resolving the contradiction between maintaining reliability and reducing resource consumption
Solution Approach 2:
The patent makes the flooding process dynamic by allowing edge nodes to dynamically control and limit flooding based on real-time destination address information. Instead of static flooding to all nodes, the system dynamically adjusts flooding scope based on feedback, optimizing the balance between reliability and resource efficiency
2Loss of energy
If flooding is limited to necessary nodes only, then network resources are conserved, but complexity increases due to destination address matching and notification mechanisms
Solution Approach 1:
The patent implements self-service by enabling edge nodes to autonomously perform destination address matching against their local tables and automatically generate notifications without requiring external control. This self-service approach reduces the need for complex centralized management while achieving efficient flooding control
Solution Approach 2:
The patent segments the flooding control function by having each edge node independently handle destination matching and notification generation for its local segment of the network. This segmentation distributes complexity across multiple nodes rather than concentrating it in a single controller, making the system more manageable
3Productivity
If edge nodes perform local destination address matching, then flooding is optimized, but processing overhead increases at each edge node
Solution Approach 1:
The patent applies partial action by having edge nodes perform destination address matching only for relevant entries in their local tables rather than processing all possible addresses. This selective processing approach optimizes flooding efficiency while minimizing unnecessary processing overhead at each edge node
Data Source
AI summary
According to one or more embodiments of the disclosure, an edge node of a virtual overlay for a Layer-2 mesh receives a new flow notification that indicates a destination address for a new flow in the Layer-2 mesh. The virtual overlay is configured to flood replicated frames of the new flow throughout the virtual overlay. The edge node makes a local match between the destination address indicated by the new flow notification and a local address table of the edge node. The edge node sends, based on the local match, a match notification that causes other nodes in the virtual overlay to stop flooding replicated frames of the new flow.