External Host IP Updates for Network Accounting Transmission

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Solution Overview

Problem

Network devices lacking locally stored network layer information, such as IP addresses, face challenges in performing networking functions like transmission of network accounting messages.

Innovation Solution

Network devices obtain network layer information from external sources like gateways or routers via commands or subscriptions, using protocols like RADIUS, to perform networking functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If network devices store network layer information locally, then networking functions can be performed reliably, but hardware and storage requirements increase

Engineering Contradiction:
Improvenetworking function performanceVSAvoidhardware and storage requirements
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent extracts the network layer information storage function from individual network devices and centralizes it in an external source. Network devices no longer need to store IP addresses and routing information locally; instead, they query the external source when needed, reducing local hardware requirements while maintaining networking functionality.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces an external source as an intermediary between network devices and network layer information. This intermediary centralizes the storage and management of network layer information, allowing multiple network devices to access the same information without each device needing its own storage capacity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If network devices obtain IP addresses dynamically, then IP address management becomes flexible, but network accounting message transmission becomes complex

Engineering Contradiction:
ImproveIP address management flexibilityVSAvoidnetwork accounting message transmission
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where network devices query the external source for network layer information and receive responses that include IP address assignments. This feedback loop allows dynamic IP address allocation while maintaining simplicity in accounting message transmission, as the external source provides the necessary information in response to structured queries.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4654553A1Use of externally maintained host IP information
Publication Date: 2025.11.26 ARISTA NETWORKS INC
  • EP4654553A1 patent drawingFigure 1
  • EP4654553A1 patent drawingFigure 2
  • EP4654553A1 patent drawingFigure 3

AI summary

A network device may obtain host network layer information such as host IP addresses from an external source. The external source may provide the network device with the network layer information of hosts connected to the network device. Accordingly, the network device may use the externally obtained network layer information to perform certain operations that would otherwise not be possible in the absence of the network layer information.