Layer 2 Layer 3 Network Mapping for Service Audits

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Solution Overview

Problem

Large networks face challenges in performing service audits, security checks, and other operations due to information being scattered across different devices, with existing automated systems being too slow and unable to handle the volume of data effectively, especially for service providers with millions of subscribers, and failing to check for data integrity or consistency.

Innovation Solution

A system and method that collect and utilize Layer 2 and Layer 3 communication information, such as ARP and MAC tables, to generate communication maps, allowing for the collection and storage of data across networks, enabling faster and more accurate service provisioning, auditing, and security checks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automated systems are used to generate network maps, then network mapping capability is provided, but the system speed is too slow for service providers with millions of subscribers

Engineering Contradiction:
Improvenetwork mapping speedVSAvoiddata volume
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent segments the network mapping process by separating Layer 2 information (MAC addresses, switch ports) from Layer 3 information (IP addresses, routing). This segmentation allows parallel processing of different network layers, significantly improving mapping speed for large service provider networks with millions of subscribers while maintaining comprehensive network visibility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent adds a dimensional approach by collecting and correlating information across multiple network layers (Layer 2 switching and Layer 3 routing) simultaneously. This multi-dimensional view enables faster network mapping by processing hierarchical network data in parallel dimensions rather than sequentially, addressing the speed limitation for large-scale networks.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of information

If Layer 2 and Layer 3 information are kept separate, then device functionality is maintained, but information availability for audits and security checks is limited

Engineering Contradiction:
Improveinformation availabilityVSAvoidnetwork architecture
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent merges Layer 2 information (MAC addresses, switch port data) and Layer 3 information (IP addresses, routing data) into a unified network map. This combination enables comprehensive service audits, security checks, and troubleshooting by making all network information available in one place, while the modular architecture manages the complexity through standardized data collection methods from multiple network devices.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If automated systems generate network maps, then network visualization is achieved, but data integrity and consistency are not verified

Engineering Contradiction:
Improvedata integrityVSAvoidautomated system capability
Core Design Contradiction:
ReliabilityVSExtent of automation

Solution Approach 1:

The patent implements feedback mechanisms where the automated system collects network information, generates network maps, and then uses those maps to verify data consistency across Layer 2 and Layer 3. The system cross-references MAC address to IP address mappings, validates routing information, and identifies inconsistencies, thereby ensuring data integrity while maintaining high automation. This feedback loop enables the automated system to self-verify its outputs without manual intervention.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS8819271B2System and method to access and use layer 2 and layer 3 information used in communications
Publication Date: 2014.08.26 SBC KNOWLEDGE VENTURES LP
  • US8819271B2 patent drawing
  • US8819271B2 patent drawing
  • US8819271B2 patent drawing

AI summary

A system and method can be used to collect communication information including Layer 2 and Layer 3 information during normal communications between devices or other elements within a network. In a particular embodiment, the information can be generated as address resolution protocol tables and media access control tables, which are used to keep track of which elements are connected to other elements and to map network addresses to media access control identifiers. The communication information can be used in performing an action, such as servicing the system, auditing the system, checking for security breaches or policy violations, or other suitable action.