Power over Ethernet NIC Configuration for Stand-by Servers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Servers in stand-by mode require additional power for configuration settings, which is not sufficiently provided by PCIe or OCP slots, leading to delays in accepting user device requests and responding, as these slots do not supply enough power to the network interface controller (NIC) for discovery and configuration.
Innovation Solution
A system and method utilizing Power over Ethernet (PoE) techniques, where a switch with Power Sourcing Equipment (PSE) transfers power to the server's NIC via a network cable, allowing configuration settings to be applied before the server boots, without the need for special modifications or additional power cables, enabling the NIC to transition to PCI-express power rails when fully powered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If PCIe or OCP slots are used to provide power to the NIC in stand-by mode, then the server structure remains simple, but the power provided is insufficient for configuration settings
Solution Approach 1:
The network cable is designed to serve dual purposes: data transmission and power delivery. By utilizing the existing network infrastructure for both functions, the system eliminates the need for separate power cables or specialized power delivery mechanisms, thereby increasing power availability to the NIC without adding system complexity
Solution Approach 2:
The network cable acts as an intermediary medium that transfers power from the network switch to the NIC. This mediator enables power delivery through the existing network connection, avoiding the need for direct power cable connections or modifications to the server's power architecture
2Use of energy by moving object
If the server is kept in stand-by mode to reduce power consumption, then energy efficiency improves, but configuration settings cannot be applied without rebooting
Solution Approach 1:
Configuration settings are applied to the NIC while the server is still in stand-by mode, before the server is fully booted. This preliminary configuration action eliminates the need for post-boot reconfiguration or repeated reboots, saving time while maintaining energy efficiency
Solution Approach 2:
The NIC remains operational and capable of receiving configuration settings during the server's stand-by period. By keeping the NIC active and receptive to configuration commands even when the server is not fully powered on, the system continuously performs useful configuration work without requiring additional power cycles
3Reliability
If the server is rebooted to apply configuration settings, then configuration is completed, but delays occur in accepting user device requests
Solution Approach 1:
All necessary configuration settings are applied to the NIC before the server enters full operational mode. This preliminary configuration ensures that when the server becomes active, it is immediately ready to handle user requests without interruption or delay for configuration tasks
Solution Approach 2:
The system prevents the need for configuration-related reboots by completing all configuration actions during the stand-by period. This preliminary anti-action counteracts the potential productivity loss by eliminating the configuration bottleneck before it can impact user request handling
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the NIC to link and apply configuration settings while the server is in stand-by mode, eliminating the need for server reboots and reducing delays in responding to user device requests by providing sufficient power for configuration settings prior to booting.
Implementation Method 1
A switch with a number of ports, each port having Power over Ethernet (PoE) capabilities... The PoE circuitry of the selected port provides power to the NIC
Data Source
AI summary
Providing power to a server includes a switch with power sourcing equipment (PSE) and a server with a network interface controller (NIC) the PSE to transfer power to the NIC of the server via a network cable to change configuration settings prior to the server booting from a stand-by mode.