Dynamic Spanning Tree Protocol for Traffic Adaptation
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Solution Overview
Problem
Current spanning tree protocols, such as STP, RSTP, MSTP, and AMSTP, face challenges in dynamically adjusting network topology in response to changes in network hardware, traffic patterns, and resource availability without link failures, leading to suboptimal traffic paths and inefficient bandwidth utilization.
Innovation Solution
The implementation of a dynamic spanning tree protocol that allows for real-time reconfiguration based on events such as changes in traffic patterns, hardware capabilities, and resource availability, using mechanisms like Layer 2 realignment and dynamic traffic mapping to select optimal spanning tree instances and root bridges, facilitated by protocols like Generic Instance Registration Protocol (GIRP) for efficient communication and reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional spanning tree protocols (STP, RSTP, MSTP, AMSTP) are used, then network topology stability is maintained, but the network cannot dynamically adapt to traffic pattern changes and hardware capability variations, resulting in suboptimal traffic paths
Solution Approach 1:
The patent implements dynamic spanning tree instances that can be created, modified, and deleted based on real-time traffic patterns and network conditions. Unlike traditional static spanning tree configurations, the system continuously monitors traffic characteristics and automatically adjusts the spanning tree topology to optimize traffic flow, enabling the network to adapt dynamically without manual intervention
Solution Approach 2:
The system changes spanning tree parameters (such as root bridge selection, path costs, and instance configurations) based on monitored traffic patterns and network conditions. By dynamically modifying these parameters in response to changing network states, the system achieves adaptability while maintaining protocol compatibility with existing spanning tree implementations
2Productivity
If static spanning tree configurations are used, then network stability is maintained, but bandwidth utilization is inefficient due to unused paths
Solution Approach 1:
The patent segments the network into multiple dynamic spanning tree instances, each optimized for specific traffic patterns or network conditions. This segmentation allows different portions of the network to utilize different paths simultaneously, increasing overall bandwidth utilization while maintaining stability through controlled instance management and failure isolation
Solution Approach 2:
The system dynamically creates and activates additional spanning tree instances when traffic patterns indicate underutilized paths. By continuously monitoring network usage and automatically provisioning new instances as needed, the system maximizes bandwidth utilization while maintaining network stability through controlled dynamic adjustment
3Productivity
If multiple spanning tree instances are configured manually, then load balancing can be achieved, but configuration complexity and administrative overhead increase significantly
Solution Approach 1:
The patent implements self-service spanning tree management where the system automatically monitors traffic patterns, identifies load balancing opportunities, creates appropriate spanning tree instances, and configures them without manual intervention. The system serves itself by continuously optimizing the spanning tree topology based on observed network conditions, eliminating the need for manual configuration while maintaining effective load balancing
Solution Approach 2:
The system employs feedback mechanisms where traffic monitoring data is continuously collected and used to automatically adjust spanning tree configurations. By implementing closed-loop control where the system responds to observed traffic patterns by dynamically creating and modifying spanning tree instances, the system achieves automated load balancing that adapts to changing conditions without administrative overhead
4Loss of time
If rapid spanning tree convergence is implemented, then recovery time after link failure is reduced, but network stability during convergence may be compromised
Solution Approach 1:
The patent implements preliminary action by pre-establishing multiple spanning tree instances with different topologies before failures occur. When a link failure is detected, the system can immediately switch to a pre-configured alternative instance without requiring time-consuming recalculation, thus achieving rapid convergence while maintaining topology stability through pre-planned failure paths
Data Source
AI summary
A dynamic multiple spanning tree protocol is described. In at least one embodiment, this protocol allows for the dynamic creation and destruction of mappings between traffic attributes and spanning tree instances with the spanning tree region. These mappings are determined based on the observation of events in the spanning tree, such as the appearance of a significant traffic stream, not mapped to any spanning tree instance, at an edge port of the region. Other embodiments are also described and claimed.