Virtual Switch Dynamic VM Network Interface Assignment
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Solution Overview
Problem
Managing network connections between virtual machines and physical network interfaces is challenging due to varying bandwidth, latency, and reliability requirements, as well as changing network conditions, which can lead to inadequate connections for virtual machines.
Innovation Solution
A system and method for assigning virtual machines to network interfaces based on dynamic rules that consider current network conditions, allowing for flexible management and prioritization of traffic, implemented in a virtual switch within the virtualization software.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If virtual machines are assigned to network interfaces using fixed assignment rules, then the configuration is simple and stable, but the system cannot adapt to changing network conditions and varying bandwidth/latency requirements
Solution Approach 1:
The patent implements dynamic VM-to-network interface assignment by continuously monitoring network conditions (bandwidth, latency, packet loss) and automatically reassigning virtual machines based on current performance metrics. This dynamic approach allows the system to adapt to changing network conditions while maintaining optimal performance, resolving the contradiction between adaptability and complexity through automated decision-making.
Solution Approach 2:
The system employs feedback mechanisms where network performance data is continuously collected and used to adjust VM assignments. The feedback loop monitors actual network conditions, compares them against predefined requirements, and triggers reassignment actions when thresholds are breached, enabling the system to adapt without requiring complex manual intervention.
2Productivity
If multiple virtual machines share network interfaces, then hardware resource utilization is improved, but network performance and reliability for individual VMs deteriorate due to shared bandwidth and potential conflicts
Solution Approach 1:
The patent applies local quality by assigning different network interfaces to different virtual machines based on their specific performance requirements. Each VM receives a tailored network configuration optimized for its workload characteristics, allowing high-performance VMs to access dedicated interfaces while others share resources, thus maintaining both efficiency and reliability.
Solution Approach 2:
The system dynamically changes network assignment parameters based on monitored performance metrics. When network conditions change or VM requirements evolve, the system adjusts assignment parameters (which VM connects to which interface) to optimize the balance between resource utilization and performance guarantees, resolving the contradiction through data-driven parameter adjustment.
3Ease of operation
If network interfaces are statically configured for virtual machines, then setup is simple and fast, but the system cannot respond to changing network conditions or prioritize traffic effectively
Solution Approach 1:
The patent implements preliminary action by pre-defining network performance thresholds, priority levels, and assignment policies before runtime. When network conditions change, the system refers to these pre-established rules to automatically make prioritization decisions, combining the simplicity of rule-based configuration with the adaptability of dynamic response without requiring complex real-time configuration operations.
Data Source
AI summary
A system and method for assigning virtual machines to network interfaces. A first virtual machine is assigned to a network interface according to a first rule and a second virtual machine is assigned to a network interface according to a second rule. The assignment rules are dependent on network conditions as determined through at least one of the network interfaces. The first rule and the second rule may specify assignments differently, such that the same network conditions may result in different assignments for the first and second virtual machines.