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FPGA-based multi-channel FC service remote transmission device

A long-distance transmission and service technology, which is applied in the field of multi-channel FC service long-distance transmission devices, can solve problems affecting equipment use and small number of credits, and achieve the effect of improving equipment transmission bandwidth

Inactive Publication Date: 2017-09-22
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0009] The existing storage system using FC as the transmission channel has a relatively small number of credits, which can effectively support the transmission of about 20Km without loss of bandwidth. In the off-site backup system (over 200KM is off-site), no distance expansion is required. The effective transmission rate of the storage system using FC as the transmission channel is only about 1% of the theoretical bandwidth, which affects the use of equipment

Method used

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  • FPGA-based multi-channel FC service remote transmission device
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Embodiment Construction

[0077] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0078] The FPGA-based multi-channel FC service long-distance transmission method of the present invention adopts the FPGA+DDR2 mechanism to meet the long-distance expansion and ensure the correctness of data content and the stability of the rate. Specifically:

[0079] When FC services are transmitted over long distances between the local and remote ends,

[0080] The local response policy mechanism is used instead of the remote response policy mechanism,

[0081] The FC data frames transmitted by DDR2 buffer are used for time-sharing storage of multi-channel services.

[0082] like figure 1 , 4 As shown, the remote response policy mechanism refers to: send data from the PortA port (A port) to the PortB port (B port), and the B port has 10 caches that can accommodate the data frame of the A port. At this time, the credit corresponding to the A port The ...

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Abstract

The invention relates to an FPGA-based multi-channel FC service remote transmission device, which is characterized in that when an FC service is in long-distance transmission between a local end and a remote end, a local response strategy mechanism is utilized to replace a remote-end response strategy mechanism, and DDR2 is adopted to buffer the transmitted FC data frame to realize time-dividing storage of multichannel services. The device enables the multi-channel FC services to realize remote disaster tolerance with distance more than 3000 KM without losing transmission speed, so that device transmission bandwidth can be improved by more than 95%; the device does not depend on the type of device, and can realize interconnection test with devices from different manufacturers under the premise of rate match as long as the device provides FC1G / 2G ports, and the ports are normal in function; the device can be widely applied to bank, insurance and enterprise level data storage backup systems through cooperation of a wavelength division system; and device efficiency is improved effectively, the number of devices of a service provider is reduced, power consumption is reduced and an energy saving and emission reduction effect is realized.

Description

[0001] This application is a divisional application of the original invention creation titled as an FPGA-based multi-channel FC service long-distance transmission method and device. The filing date of the original application is 2014-08-12, and the application number is 201410396420.6. technical field [0002] The present invention relates to storage area network service, data storage service and DWDM (Dense Wavelength Division Multiplexing, dense light wave multiplexing) transmission service, specifically a kind of multi-channel FC (Fibre Channel) service long-distance based on FPGA (Field Programmable Gate Array) transmission device. Background technique [0003] Fiber Channel (Fibre Channel, FC) has become one of the mainstream technologies of storage area network (SAN, Storage Area Network) due to its advantages of good scalability, high bandwidth, strong versatility and long transmission distance. The current rate can support 1.0625G , 2.125G, 4.25G, 8.5G. [0004] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/815H04L29/08H04L1/00H04L1/18H04J14/02H04L47/22
CPCH04J14/0227H04L1/0013H04L1/1858H04L47/10H04L47/225H04L67/1097H04L67/568
Inventor 张思思
Owner FENGHUO COMM SCI & TECH CO LTD
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