Network Gateway VM Layer 3 Switching Edge Compute

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Solution Overview

Problem

The high cost and complexity of physical layer three switches in edge computing deployments, which are essential for enabling communication between different virtual local area networks (VLANs) without a dedicated router, pose a significant challenge, especially in remote sites where scalability and security are also concerns.

Innovation Solution

Implementing a network gateway virtual machine with layer three switching functionality on an on-premises compute and networking server, which uses generic hardware and bypasses the need for a physical layer three switch, allowing border control of a layer two communications network with VLANs, thereby reducing costs and improving scalability and security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a physical layer three switch is used to enable communication between VLANs, then network functionality is achieved, but cost and device complexity increase significantly

Engineering Contradiction:

Improvenetwork functionalityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a virtual copy of layer three switching functionality through a network gateway virtual machine that runs on generic hardware. Instead of requiring dedicated physical layer three switch hardware, the invention implements the same networking functions as software/virtualization, allowing VLAN communication without expensive specialized equipment.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The patent replaces the mechanical/physical layer three switch hardware system with a software-based virtual machine implementation. The network gateway VM provides layer three routing and VLAN communication capabilities through software processes rather than dedicated electronic switching hardware, reducing complexity and cost.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If a physical layer three switch is deployed at remote sites, then VLAN communication is enabled, but scalability and security management become difficult

Engineering Contradiction:

ImprovescalabilityVSAvoidmanagement complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The network gateway virtual machine serves multiple functions: it provides layer three routing, enables VLAN communication, and acts as a border gateway. This multi-functional approach consolidates what would otherwise require separate devices, improving scalability and simplifying management at remote edge locations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The network gateway VM acts as an intermediary between the layer two local network and external networks. It provides border gateway functionality and controlled access points, enabling secure and scalable network expansion without requiring complex physical infrastructure at each remote site.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20240388470A1Edge computing

Publication Date: 2024.11.21 MICROSOFT TECHNOLOGY LICENSING LLC

AI summary

An on-premises compute and networking server comprises a network gateway virtual machine having layer three switching functionality. The compute and networking server has a plurality of physical ports physically connected to a layer two communications network at the premises. The layer two communications network only comprises layer two equipment and a modem or other internet access equipment.