Network Interface Pin Reassignment for Remote Management
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Solution Overview
Problem
Existing information handling systems lack remote management capabilities for network interface peripheral cards, requiring physical access for management functions, which is inconvenient and limited to local administrators.
Innovation Solution
Implementing physical pin reassignment and a dedicated management network to dynamically redefine pins, allowing existing I/O signals to be routed for remote management, using a smart network interface with a dedicated processor and custom processing cores for efficient and low-latency network functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If physical access is required for management functions, then local administrators can directly manage network interface cards, but remote administrators cannot perform management functions without physical access
Solution Approach 1:
The patent segments the PCIe bus into a data plane for network traffic and a management plane for out-of-band management. This separation allows remote management functions to operate independently through dedicated management pins, enabling remote administrators to manage network interface cards without requiring physical access to the system.
Solution Approach 2:
The patent introduces a baseboard management controller (BMC) as an intermediary device that receives management commands through dedicated management pins on the PCIe connector. The BMC acts as a mediator between remote administrators and the network interface card, enabling remote management operations without direct physical access to the card itself.
2Adaptability or versatility
If existing PCIe pins are used for both data plane and management functions, then connector pins are efficiently utilized, but management traffic cannot be separated from data traffic
Solution Approach 1:
The patent implements dynamic pin reassignment where PCIe pins can be configured for different functions based on operational mode. The same physical pins can serve as data plane pins during normal operation and be reconfigured as management pins when management traffic needs to be routed, providing adaptability without requiring separate dedicated pins for all functions.
Solution Approach 2:
The patent makes PCIe connector pins multi-functional by enabling them to serve both data plane and management plane functions. Through configuration settings and dynamic reassignment, the same pins can handle network data traffic or management traffic as needed, eliminating the need for completely separate pin sets while maintaining functional separation.
3Ease of operation
If a dedicated management network is implemented, then remote management functions can be performed over the network, but additional network infrastructure is required
Solution Approach 1:
The patent merges the management network functionality with the existing PCIe management bus infrastructure. Instead of requiring completely separate physical network infrastructure, the system utilizes the PCIe management pins and BMC to create an out-of-band management channel that can carry remote management traffic, thereby reducing the need for additional dedicated network hardware while enabling remote serviceability.
Data Source
AI summary
Remote management of network interface peripheral cards uses physical pin reassignment and a dedicated management network. One or more physical pins in a connector may be dynamically redefined from an interface protocol to a different interface protocol. The dynamic redefinition allows existing input/output signals to be routed to the pins to provide remote management features.