Network Fault Isolation Using Standard Disconnection Packets

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Solution Overview

Problem

Existing communication networks face challenges in adapting to different vendor protocols, leading to poor adaptability and inefficiency in fault detection and recovery, particularly when network faults occur.

Innovation Solution

A troubleshooting method using standard protocol-compatible disconnection request packets to trigger nodes to disconnect faulty connections, allowing for efficient fault detection and recovery without the need for proprietary protocols, enhancing flexibility and universality across multi-scenario systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a proprietary protocol is used for fault sensing between network device and terminal, then fault detection capability is improved, but adaptability to different vendors deteriorates

Engineering Contradiction:

Improvefault detection capabilityVSAvoidadaptability to different vendors

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies universality by making the fault sensing module compatible with multiple communication protocols including TCP, UDP, and RDMA. This allows the same fault sensing functionality to work across different vendor equipment without requiring proprietary protocol implementations, thereby resolving the contradiction between specialized fault detection capability and broad vendor adaptability

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Speed

If active fault notification is implemented from network device to terminal, then fault sensing speed is improved, but network resource consumption increases

Engineering Contradiction:

Improvefault sensing speedVSAvoidnetwork resource consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic action through the fault sensing module sending regular probe packets to detect network faults. This periodic detection mechanism enables timely fault discovery while allowing the system to enter low-power states between probes, balancing fast fault sensing with reduced network resource consumption during normal operation

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The fault sensing module performs self-service by autonomously sending probe packets and processing fault detection without requiring continuous active notification from the network device. This reduces network resource consumption while maintaining fast fault sensing capability through the module's independent operation

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20260052061A1Troubleshooting method, apparatus, device, and system, and storage medium

Publication Date: 2026.02.19 HUAWEI TECH CO LTD

AI summary

The present disclosure discloses a troubleshooting method, apparatus, device, and system, and a storage medium, and relates to the field of communication technologies. An example in which a first network device performs the method is used. The first network device determines that a network fault occurs, and sends a disconnection request packet corresponding to a first connection to a first node. The first connection is a connection between the first node and another node, the disconnection request packet is compatible with a standard protocol, and the disconnection request packet indicates the first node to disconnect the first connection.