Multipoint-to-point pseudowire aggregation for bandwidth reduction
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Solution Overview
Problem
In packet switched networks, establishing and maintaining point-to-point pseudowires for non-IP protocol data transmission is complex and bandwidth-intensive, requiring multiple pseudowires and individual configuration and control, which complicates data aggregation and monitoring at the root device.
Innovation Solution
A method to establish a multipoint-to-point pseudowire that aggregates data streams from multiple leaf devices into a single pseudowire, using an aggregation parameter in the pseudowire establishment request, allowing bidirectional communication and simplifying control and monitoring by reducing the number of pseudowires and bandwidth usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If point-to-point pseudowires are established for each leaf device to transmit data streams toward the root device, then data transmission reliability is improved, but bandwidth usage increases and device complexity increases
Solution Approach 1:
The patent merges multiple point-to-point pseudowires into a single multipoint-to-point pseudowire that connects the root device directly to multiple leaf devices. This consolidation reduces the number of pseudowires from N (number of leaf devices) to 1, thereby reducing bandwidth consumption and simplifying control plane operations at the root device while maintaining reliable data transmission through the aggregated pseudowire structure.
Solution Approach 2:
The multipoint-to-point pseudowire establishes a universal communication path that serves multiple leaf devices simultaneously. The root device can receive and differentiate data streams from multiple leaf devices through a single pseudowire connection, enabling multi-functionality without requiring separate dedicated pseudowires for each leaf device, thus reducing overall system complexity.
2Productivity
If multiple point-to-point pseudowires are established between leaf devices and root device, then data transmission capability is improved, but bandwidth consumption increases
Solution Approach 1:
The patent combines multiple point-to-point pseudowire connections into a single multipoint-to-point pseudowire that aggregates data streams from multiple leaf devices. This merging reduces bandwidth consumption by eliminating redundant transmission paths while preserving the ability to transmit data from all leaf devices to the root device through the consolidated pseudowire structure.
3Manufacturing precision
If individual pseudowire configuration and monitoring is performed for each leaf device, then pseudowire management precision is improved, but operational complexity increases
Solution Approach 1:
The multipoint-to-point pseudowire provides a universal management interface for the root device to control and monitor multiple leaf devices simultaneously. Configuration parameters and monitoring operations can be applied to the single pseudowire connection, which automatically extends to all connected leaf devices, thereby maintaining precise control while significantly reducing operational complexity compared to managing individual pseudowires separately.
Data Source
AI summary
A method is provided for transmitting a data stream from a plurality of terminating (leaf) devices toward another terminating (root) device, the leaf and root devices forming the ends of a multipoint-to-point pseudowire based on a packet switched network to which the terminating devices belong, the method comprising: receiving, by a switching device, also belonging to the packet switched network, a first data stream sent by a first leaf device toward the root device, receiving, by the switching device, a second data stream sent by a second leaf device toward the root device, aggregating the first and second data streams into a third data stream, the switching device having been configured to aggregate the first and second data streams via a parameter called the aggregation parameter, included in a pseudowire establishment request, and transmitting the third data stream toward the root device.