Aggregation-Group Rate Management for Ethernet Virtual LANs
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Solution Overview
Problem
Current rate management methods for Ethernet Virtual LAN (EVLAN) services lack efficient mechanisms to dynamically adjust and distribute bandwidth among ports in an aggregation-group, especially when traffic rates vary, leading to potential capacity exhaustion and inefficient resource utilization.
Innovation Solution
A system that implements rate management policies and algorithms within an aggregation-group to dynamically adjust allowed-rates among member ports, using rate-messages for distributing ingress-rate information and applying policies such as ramping, adjustment, and premium pricing to ensure fair sharing of a guaranteed-rate, while accommodating weighting factors and varying traffic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If per-port guarantee is used to specify bandwidth for each port, then ease of policing is improved (only local port ingress traffic knowledge is required), but bandwidth allocation efficiency deteriorates when traffic rates vary
Solution Approach 1:
The system dynamically adjusts allowed-rates for ports based on real-time traffic conditions and rate-messages exchanged between ports. Instead of static per-port guarantees, the system continuously adapts bandwidth allocation to match actual traffic patterns, improving efficiency while maintaining ease of policing through automated rate adjustment mechanisms.
Solution Approach 2:
The system implements feedback through rate-messages that ports send to each other about their ingress traffic rates. This feedback loop enables ports to adjust their allowed-rates based on actual usage patterns, optimizing bandwidth allocation efficiency while keeping the policing mechanism simple and automated.
2Productivity
If aggregate-rate services are provided to multiple ports, then resource utilization is improved, but capacity exhaustion risk increases when traffic rates vary
Solution Approach 1:
The system uses feedback through rate-messages to monitor actual traffic rates at each port and adjusts allowed-rates accordingly. This enables the system to respond to varying traffic conditions in real-time, optimizing resource utilization while preventing capacity exhaustion by dynamically adapting to actual demand patterns.
Solution Approach 2:
The system changes the allowed-rate parameter dynamically based on actual traffic conditions. By adjusting this parameter in response to measured ingress rates and exchanged rate-messages, the system optimizes resource allocation across multiple ports while maintaining reliability and preventing capacity exhaustion.
Data Source
AI summary
A system for rate management of communication services. The system comprises at least one group of ports sharing a guaranteed-rate; and each of the group of ports determines an allowed-rate using at least one rate management policy.