Network Setting Rollback for SDN Communication Abnormalities

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Solution Overview

Problem

In software-defined networking (SDN) environments, communication devices that are not the target of network setting changes may detect communication abnormalities despite normal operations, due to changes in network settings caused by software updates.

Innovation Solution

A communication control device and method that includes a processor to manage network settings and revert them to their previous state upon receiving abnormality notifications from non-target devices, using a rollback mechanism to address communication abnormalities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If network settings are changed on setting change target devices, then network functionality is improved or updated, but communication abnormalities are detected by non-target devices

Engineering Contradiction:

Improvenetwork setting update capabilityVSAvoidcommunication abnormality detection

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The communication control device monitors communication abnormalities reported by communication devices and uses this feedback to determine whether to rollback network settings. When a communication abnormality is detected after a setting change, the system receives notification from affected devices and responds by reverting the setting change, thus using feedback loops to maintain network reliability while allowing updates.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary monitoring after network setting changes to detect potential communication abnormalities before they cause widespread issues. By proactively checking for abnormalities and having rollback capability ready, the system prevents minor issues from escalating into major network failures.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If network settings are changed to enable new communication paths, then network adaptability is improved, but false communication abnormalities occur in non-target devices

Engineering Contradiction:

Improvecommunication path configurationVSAvoidfalse communication abnormality

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system implements feedback mechanisms where communication devices report their operational status after network setting changes. When non-target devices experience unexpected communication issues, they notify the control device, which then analyzes whether the issue is a true abnormality or a false alarm caused by the setting change, and rolls back if necessary.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Before implementing network setting changes that could affect non-target devices, the system prepares rollback procedures and monitoring mechanisms in advance. This preliminary anti-action ensures that if false communication abnormalities occur, the system can quickly revert to the previous stable configuration.

Inventive Principle:

Principle #9Preliminary anti-action

3Reliability

If communication abnormalities are strictly monitored, then network reliability is improved, but normal communication after setting changes is flagged as abnormal

Engineering Contradiction:

Improvecommunication monitoring accuracyVSAvoidnormal communication recognition

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The communication control device uses feedback from multiple sources to distinguish true abnormalities from normal post-update behavior. By analyzing patterns across multiple devices and considering the timing relative to setting changes, the system can differentiate between genuine communication failures and normal operations that occur after network configuration updates.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary monitoring during the transition period after network setting changes to establish a baseline of normal communication patterns. This allows the system to recognize that certain communication behaviors are normal during and after updates, preventing false positives while maintaining reliability for detecting true abnormalities.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12580812B2Communication control device, communication control method, and non-transitory computer readable recording medium

Publication Date: 2026.03.17 TOYOTA JIDOSHA KK

AI summary

A communication control device includes a memory and a processor connected to the memory. The processor is configured to perform processing related to changing a network setting, on a communication device that is connected to the network and that is a setting change target, and perform processing to return the network setting to a prior state, on the communication device that is the setting change target, in a case in which a communication abnormality notification is received from a communication device that is connected to the network and that is not a setting change target.