Wireless Debug Circuit for Server Serial Stream Access
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Solution Overview
Problem
Traditional serial ports in information handling systems are often inconveniently located, expensive, and limited in functionality, making it difficult to access multiple serial streams for debugging purposes, especially in server environments where physical manipulation is required and not all systems include serial ports.
Innovation Solution
A debugging circuit within an information handling system that receives multiple serial data streams from management controllers and resources, providing access to a subset of these streams via a wireless interface, allowing for concurrent access and selection among various serial streams without the need for physical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional physical serial ports are used for debugging access, then direct connection to information handling resources is achieved, but the ports are located in inconvenient positions requiring physical manipulation and hot aisle access
Solution Approach 1:
The patent replaces the mechanical physical serial port connection system with a wireless communication system. The debugging information handling system establishes wireless communication with the management controller, eliminating the need for physical cable connections, dongles, and manual port selection. This substitution resolves the contradiction by improving access convenience while reducing physical connection complexity.
Solution Approach 2:
The patent introduces a management controller as an intermediary between the debugging information handling system and the information handling resources. The management controller receives wireless debug commands and forwards them to the appropriate resources, enabling indirect access that eliminates the need for direct physical serial port connections. This intermediary approach improves ease of operation while managing the complexity through a centralized control point.
2Adaptability or versatility
If a single physical serial port is used, then connection is established, but only one serial stream can be accessed at a time limiting concurrent debugging capabilities
Solution Approach 1:
The patent makes the management controller a universal access point that can simultaneously manage multiple serial streams from different information handling resources. Instead of requiring separate physical ports or expensive concentrators for each stream, the management controller provides multi-functional access to numerous serial streams through a single wireless interface, enabling concurrent debugging of multiple resources.
Solution Approach 2:
The patent transitions from a single-dimension physical port model to a multi-dimensional wireless communication model. The wireless interface provides multiple logical channels and streams through what appears as a single connection, adding the dimension of virtualization. This allows concurrent access to multiple serial streams without requiring proportional increases in physical hardware complexity.
3Reliability
If expensive onboard diagnostic LEDs are included to diagnose lower-level operation, then debugging capability is provided, but the cost increases
Solution Approach 1:
The patent enables the debugging information handling system to perform comprehensive diagnostics and troubleshooting of information handling resources without requiring expensive onboard diagnostic hardware like LED indicators. The wireless debug interface allows direct communication with resources to read status, logs, and error information, eliminating the need for costly diagnostic LEDs while maintaining or improving debugging reliability.
Solution Approach 2:
The patent creates a virtual copy of the diagnostic functionality that exists in software/firmware rather than hardware. Instead of physical diagnostic LEDs on the server, the system uses software-based diagnostic capabilities accessed through the wireless debug interface, providing the same troubleshooting information at minimal additional cost.
Data Source
AI summary
In accordance with embodiments of the present disclosure, an information handling system may include a host system with information handling resources, a management controller configured to provide out-of-band management of the information handling system, and a debugging circuit. The debugging circuit may receive a plurality of serial data streams from the management controller and the plurality of information handling resources, and provide access to at least a subset of the plurality of serial data streams to a debugging information handling system via a wireless interface.