Switch Egress Queue Dynamic Congestion Thresholds
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Solution Overview
Problem
Network congestion points in networked environments lead to decreased performance, as existing technologies fail to effectively manage and adapt to changing data flow conditions.
Innovation Solution
The implementation of a network system that includes switches with dynamic congestion notification thresholds and adaptive drain rate metrics, which adjust based on egress queue data to identify and manage congestion points, and source devices that employ congestion avoidance schemes to optimize data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If congestion avoidance schemes are implemented with dynamic threshold adjustment, then network performance is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic congestion notification thresholds that automatically adjust based on real-time network conditions. The switch processing circuitry continuously monitors egress queue data and modifies threshold values to adapt to changing traffic patterns, transforming a static configuration into a dynamic self-regulating system that improves performance without requiring manual intervention
Solution Approach 2:
The congestion avoidance scheme operates autonomously through self-service mechanisms. The switch automatically detects congestion conditions by monitoring egress queue depths, dynamically adjusts notification thresholds, and manages data flow without external control. This self-managing approach resolves the contradiction by enabling complex adaptive behavior through automated local decision-making rather than centralized control
2Productivity
If dynamic congestion management is implemented, then data transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The patent changes key operational parameters dynamically, specifically the congestion notification threshold and drain rate metric. These parameters are continuously adjusted based on monitored network conditions such as egress queue depths and traffic patterns. By modifying parameters rather than system architecture, the patent achieves improved transmission efficiency while keeping the underlying system structure relatively simple
Solution Approach 2:
The congestion avoidance scheme incorporates feedback loops where the switch processing circuitry monitors egress queue data and uses this information to dynamically adjust congestion notification thresholds. This closed-loop feedback mechanism enables the system to automatically respond to changing conditions, improving data transmission efficiency through adaptive control without requiring complex external management systems
Data Source
AI summary
Disclosed are various embodiments for facilitating network flows in a networked environment. In various embodiments, a switch transmits data using an egress port that comprises an egress queue. The switch sets a congestion notification threshold for the egress queue. The switch generates a drain rate metric based at least in part on a drain rate for the egress queue, and the congestion notification threshold is adjusted based at least in part on the drain rate metric.