FCoE to Fibre Channel Gateway for SAN Connectivity
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Solution Overview
Problem
Conventional Fibre Channel over Ethernet (FCoE) systems are complex and costly due to the use of proprietary converged Ethernet switches and FCoE transit switches, which introduce issues like head of line blocking, nondeterministic paths, and multi-hop problems when connecting server information handling systems to Fibre Channel storage area networks.
Innovation Solution
A Fibre Channel gateway system directly connected to server and Fibre Channel switch information handling systems, which establishes communication by converting FCoE messages to Fibre Channel messages, eliminating the need for proprietary switches and reducing complexity through a native Fibre Channel N_Port Identity Visualization (NPIV) gateway uplink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional proprietary converged Ethernet switches and FCoE transit switches are used to connect server IHSs to Fibre Channel SANs, then connectivity is provided, but system complexity and cost increase
Solution Approach 1:
The patent extracts and removes the FCoE transit switch from the network path, eliminating the need for FCoE protocol conversion and reducing the number of network hops. This directly addresses the complexity issue while maintaining Fibre Channel connectivity through a simplified architecture where servers connect directly to the Fibre Channel SAN without intermediate FCoE switching devices.
Solution Approach 2:
The patent implements a unified gateway device that handles both FCoE and native Fibre Channel protocols, eliminating the need for separate proprietary converged Ethernet switches and FCoE transit switches. This multi-functional approach reduces system complexity by consolidating multiple specialized devices into a single universal gateway that provides the same connectivity functionality.
2Adaptability or versatility
If conventional proprietary converged Ethernet switches and FCoE transit switches are used to connect server IHSs to Fibre Channel SANs, then connectivity is provided, but cost increases
Solution Approach 1:
By removing the FCoE transit switch from the architecture, the patent eliminates the cost associated with purchasing, licensing, and maintaining this specialized device. The extraction of unnecessary components directly reduces the quantity of hardware required and thereby lowers overall system cost while preserving Fibre Channel connectivity.
Solution Approach 2:
The unified gateway device performs multiple functions that previously required separate proprietary switches, reducing the total number of expensive specialized devices needed. This consolidation approach lowers cost by eliminating redundant hardware investments while maintaining the same adaptability and connectivity capabilities.
3Ease of operation
If FCoE transit switches are used, then FCoE initialization protocol snooping bridge is provided, but head of line blocking and nondeterministic paths occur
Solution Approach 1:
The patent removes the FCoE transit switch that implements FCoE initialization protocol snooping from the network path. By extracting this component, the patent eliminates the source of head of line blocking and nondeterministic path issues while still providing necessary FCoE initialization functionality through the unified gateway, thereby improving reliability and path determinism.
4Adaptability or versatility
If multiple ASICs and FPGA are used in conventional proprietary converged Ethernet switches, then Fibre Channel switching capability is provided, but complexity and cost increase
Solution Approach 1:
The patent implements a unified gateway device that consolidates Fibre Channel switching capability, FCoE protocol handling, and gateway functionality into a single multi-functional platform. This eliminates the need for multiple separate ASICs and FPGAs required in conventional proprietary switches, reducing device complexity while maintaining full Fibre Channel switching capability and protocol support.
Data Source
AI summary
An information handling system (IHS) network includes a server IHS and a Fiber Channel (FC) switch IHS that are each directly connected a FC gateway. The FC gateway is configured to establish communication with the FC switch IHS. The FC gateway then receives one of an FCoE Initialization Protocol (FIP) fabric login message and a FIP fabric discovery message from the server IHS and, in response, provides a FCoE fabric discovery message and converts the FCoE fabric discovery message to an FC fabric discovery message that is provided to the FC switch IHS. The FC gateway also receive a FC fabric discovery accept message from the FC switch IHS, converts the FC fabric discovery accept message to an FCoE fabric discovery accept message, and provides one of a FIP fabric login accept message and a FIP fabric discovery accept message to the server IHS.