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A method for long-distance transmission of multi-channel fc services based on fpga

一种远距离传输、业务的技术，应用在基于FPGA的多路FC业务远距离传输领域，能够解决影响设备使用、Credit数量小等问题，达到提高设备传输带宽的效果

Active Publication Date: 2017-12-22
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0008] 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

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  • A method for long-distance transmission of multi-channel fc services based on fpga
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  • A method for long-distance transmission of multi-channel fc services based on fpga

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Embodiment Construction

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

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

[0079] When the FC service is transmitted over a long distance between the local and the remote,

[0080] Use local response policy mechanism instead of remote response policy mechanism,

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

[0082] Such as figure 1 , 4 As shown, the remote response policy mechanism refers to: sending data from PortA port (A port) to PortB port (B port), B port has 10 buffers that can hold the data frame of A port, and the credit corresponding to A port The value is 10, each time port A sends a data frame...

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Abstract

The present invention relates to a method for long-distance transmission of multi-channel FC services based on FPGA. When FC services are transmitted over a long distance between local and remote terminals, the local response policy mechanism is used instead of the remote response policy mechanism, and the FC service of DDR2 buffer transmission is adopted. Data frames are used for time-sharing storage of multi-channel services. The method described in the present invention enables multi-channel FC services to realize long-distance redundant disasters over 3000KM without loss of transmission speed, and improves equipment transmission bandwidth, which can reach more than 95%; it does not depend on the type of equipment, as long as the equipment provides FC1G / 2G port, and the function of the port is normal. Under the premise of speed matching, it can realize the interconnection test with different manufacturers' equipment; it can be widely used in banks, insurance, and enterprise-level data storage and backup systems with the WDM system; effectively improve the equipment Efficiency, reduce the number of equipment terminals of operators, reduce power consumption, and achieve energy saving and emission reduction.

Description

Technical field [0001] The invention relates to a storage area network service, a data storage service and a DWDM (Dense Wavelength Division Multiplexin) transmission service, in particular to a multi-channel FC (Fibre Channel) service long-distance based on FPGA (Field Programmable Gate Array) Transmission method. Background technique [0002] Fibre Channel (FC) has become one of the mainstream technologies of Storage Area Network (SAN, Storage Area Network) with 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. [0003] In recent years, enterprise storage applications have seen rapid growth, and the public has become more aware of the importance of business continuity and disaster recovery. With the continuous expansion of SAN scale and the consideration of data security, enterprise servers and data centers, or main and backup data centers are likely to be in differe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L1/00H04L12/811H04L47/22
CPCH04J14/0227H04L1/0013H04L1/1858H04L47/10H04L47/225H04L67/1097H04L67/568
Inventor 孙天春康俊任怀平张思思
Owner FENGHUO COMM SCI & TECH CO LTD
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