Interchangeable Standard Port Auto-Negotiation for Stacking
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Solution Overview
Problem
Existing stacking bus implementations in fixed Ethernet Switches either consume valuable space with dedicated ports or incur additional costs with modular solutions that may not be readily available when needed.
Innovation Solution
The use of an Interchangeable Standard Port or Stack Port (ISPSP) approach, which employs standard connectors like SFP or RJ-45 to connect to either standard ports or stack ports, automatically detects the connection type and adjusts bit rates, enabling flexible and high-speed data transfer through auto-negotiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dedicated stack ports are used, then stacking functionality is provided, but valuable space on the rack or box is consumed and cannot be used for network ports
Solution Approach 1:
The patent makes standard network ports multi-functional by enabling them to operate as both standard network ports and stacking ports. The port can dynamically switch between standard Ethernet mode and stacking mode based on connection detection, eliminating the need for dedicated stacking ports and freeing up rack space.
2Adaptability or versatility
If modules are used for stacking, then stacking functionality is provided, but additional cost is incurred and modules may not be available when needed
Solution Approach 1:
The patent eliminates the need for separate stacking modules by making standard network ports multi-functional. The same port hardware can be used for both standard networking and stacking operations, reducing component costs and eliminating supply chain dependencies for specialized modules.
Solution Approach 2:
The system automatically detects when a standard port is connected to another stacking port and self-configures to operate in stacking mode. This automatic detection and configuration eliminates the need for manual module installation or complex setup procedures.
3Area of stationary object
If standard ports are used for stacking, then space and cost are saved, but automatic detection and bit rate adjustment are required
Solution Approach 1:
The port performs automatic self-detection to determine whether it is connected to another stacking port or a standard network device. Based on this detection, the port automatically configures itself with the appropriate bit rate and operational mode, eliminating the need for manual intervention while maintaining simplicity.
Solution Approach 2:
The system uses feedback from connection detection to dynamically adjust the port's operational parameters. When a stacking connection is detected, the port receives feedback to switch to stacking mode with higher bit rates; when a standard connection is detected, it remains in standard mode, ensuring optimal performance for each scenario.
Data Source
AI summary
An Interchangeable Standard Port or Stack Port (ISPSP) uses a standard physical connector such as an RJ-45 or SFP. The ISPSP automatically detects whether it is connected to a standard port, such as a 1000BaseT, or whether it is connected to another ISPSP stacking port. This automatic detection can be done through hardware or software. Once the auto-detection is complete the routing platform will automatically configure the ISPSP port for standard 1 Gbps bit rate and framing, or for stacking, e.g., 2.5 Gbps bit rate, and framing.