Network Device Overheat Restart With Restricted Capability Mode

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Solution Overview

Problem

Modern network devices face challenges in managing overheat conditions, leading to potential hardware damage and network churn, as they require manual intervention to power down and restart, which can result in downtime and inefficiencies.

Innovation Solution

Implementing a method that monitors temperature sensors to power cycle the network device and enter a restricted mode, using both hardware and software mechanisms to prevent damage, minimize downtime, and reduce manual intervention by automatically managing temperature thresholds and enabling/disabling device capabilities based on thermal conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual intervention is required to power down and restart the network device when temperature exceeds threshold, then hardware damage is prevented, but network downtime increases and operational efficiency decreases

Engineering Contradiction:
Improvehardware protectionVSAvoidnetwork downtime
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system implements self-service by automatically detecting temperature thresholds and triggering power cycle operations without human intervention. The processor monitors temperature sensors and autonomously executes the power down and restart sequence when thermal limits are exceeded, eliminating the need for manual intervention while protecting hardware from damage.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system employs feedback mechanisms by continuously monitoring temperature sensor data and using this information to trigger appropriate responses. When the temperature exceeds the predetermined threshold, the system receives feedback from the sensor and automatically initiates the power cycle process, creating a closed-loop control system that responds dynamically to thermal conditions.

Inventive Principle:
Principle #23Feedback

2Ease of operation

If automatic power cycling is implemented when temperature threshold is exceeded, then manual intervention is eliminated and response time is reduced, but the frequency of network disruptions may increase

Engineering Contradiction:
Improveautomatic operationVSAvoidnetwork stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The system changes operational parameters by dynamically adjusting the power state based on temperature conditions. When the temperature threshold is exceeded, the system transitions from an active power state to a powered-down state, and automatically restores it when conditions normalize. This parameter change approach allows automatic operation while maintaining network stability through conditional triggering.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system applies preliminary anti-action by preventing hardware damage before it can occur. By detecting temperature thresholds in advance and proactively initiating power cycle operations, the system counteracts potential thermal damage before it affects hardware integrity or causes extended network disruptions.

Inventive Principle:
Principle #9Preliminary anti-action

3Extent of automation

If temperature monitoring and automatic power cycling systems are implemented, then hardware damage is prevented and operational autonomy is improved, but device complexity increases

Engineering Contradiction:
Improveautomatic temperature managementVSAvoidsystem complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The system achieves multi-functionality by integrating temperature monitoring, threshold evaluation, and power cycle control into a single automated thermal management system. The processor performs multiple functions including normal network operations, temperature sensing, threshold comparison, and power state control, eliminating the need for separate dedicated components for each function and thereby reducing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system merges previously separate functions into a unified automated process. Temperature monitoring, decision logic, and power cycle execution are combined into a single integrated system managed by the processor, reducing the number of independent components and simplifying the overall system architecture while maintaining high automation capability.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12007742B2Overheat restart behavior in network devices
Publication Date: 2024.06.11 ARISTA NETWORKS INC
  • US12007742B2 patent drawing
  • US12007742B2 patent drawing
  • US12007742B2 patent drawing

AI summary

A method, device, and computer readable medium for managing overheat behavior in a network device. The method includes determining that a first temperature exceeds a threshold by at least one temperature sensor disposed in a network device. The method includes logging a temperature sensor name of the at least one temperature sensor, the first temperature, and actions taken prior to determining that the first temperature exceeds the threshold. The method further includes disabling network device capabilities and enabling a subset of network device capabilities after powering cycling the network device.