Port Analyzer Adapter Encapsulating FC Frames as Ethernet
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Solution Overview
Problem
Current Fibre Channel analyzers for troubleshooting network devices are expensive, making it costly for network managers to analyze and diagnose issues in Fibre Channel protocol-based networks.
Innovation Solution
Encapsulating Fibre Channel frames as Ethernet frames allows for analysis using conventional PCs or laptops, enabling cost-effective troubleshooting by utilizing existing Ethernet infrastructure and software, and employing SPAN or RSPAN features for convenient monitoring of network traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional Fibre Channel analyzers are used to capture and analyze FC frames, then the analysis capability is achieved, but the cost is high
Solution Approach 1:
The patent introduces an intermediary device that captures Fibre Channel frames and encapsulates them within Ethernet frames. This mediator translates the proprietary FC protocol into standard Ethernet, allowing conventional Ethernet analyzers and PCs to analyze FC traffic without requiring expensive dedicated FC analyzers. The intermediary performs protocol translation while preserving the essential frame data for analysis.
Solution Approach 2:
The patent creates a copy of the Fibre Channel frames and encapsulates them in Ethernet format. Instead of directly analyzing native FC frames with specialized equipment, the system copies the frame data, wraps it in standard Ethernet frames with appropriate headers, and sends it through Ethernet infrastructure to conventional analysis tools. This copying approach enables analysis with off-the-shelf equipment.
2Measurement precision
If FC frames are captured and analyzed using specialized equipment, then troubleshooting accuracy is improved, but device complexity increases
Solution Approach 1:
The patent makes the analysis system universal by enabling standard Ethernet PCs and analyzers to perform Fibre Channel frame analysis. Instead of requiring specialized FC-only equipment, the system uses multi-functional Ethernet infrastructure that can handle both standard Ethernet traffic and encapsulated FC frames. This universality reduces device complexity while maintaining troubleshooting accuracy.
Solution Approach 2:
The patent replaces the mechanical/specialized FC analyzer system with a software-based Ethernet approach. Instead of dedicated hardware FC analyzers, the system uses standard Ethernet network interface cards and software running on conventional PCs to capture and analyze the encapsulated FC frames. This substitution reduces hardware complexity while preserving analysis capabilities.
3Speed
If FC frames are transmitted at high speed, then data capture rate is improved, but compatibility with standard Ethernet infrastructure is reduced
Solution Approach 1:
The patent changes the parameter of frame encapsulation to enable high-speed FC frame transmission over Ethernet infrastructure. By encapsulating FC frames within Ethernet frames and using efficient encapsulation methods, the system maintains high data capture rates while ensuring compatibility with standard Ethernet networks. The parameter change involves the frame structure and transmission protocol adaptation.
Data Source
AI summary
Methods and devices are provided for encapsulating FC frames from a network device as Ethernet frames. Preferably, the FC frames represent traffic for a plurality of ports of the network device. The encapsulated Ethernet frames may be input to a conventional network interface card of a personal computer (“PC”) or laptop. Therefore, encapsulating the FC frames allows an engineer to use software installed on a conventional PC to troubleshoot problems with a network using FC protocol. According to some aspects of the invention, FC frames may be truncated to various degrees, to allow smaller data frames to be output at an appropriate rate to the analyzing personal computer, laptop, etc.