CN104539408A - Redundant industry Ethernet system with message multistage filtering function and service classification control function - Google Patents
Redundant industry Ethernet system with message multistage filtering function and service classification control function Download PDFInfo
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- CN104539408A CN104539408A CN201410836623.2A CN201410836623A CN104539408A CN 104539408 A CN104539408 A CN 104539408A CN 201410836623 A CN201410836623 A CN 201410836623A CN 104539408 A CN104539408 A CN 104539408A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0604—Management of faults, events, alarms or notifications using filtering, e.g. reduction of information by using priority, element types, position or time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
- H04L45/7453—Address table lookup; Address filtering using hashing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/23—Bit dropping
Abstract
The invention discloses a redundant industry Ethernet system with a message multistage filtering function and a service classification control function. The redundant industry Ethernet system is characterized by including two ways of MAC message processing units, a dual-network redundancy unit, a message filtering processing unit and a message classifying forwarding unit by means of an FPGA; the two ways of MAC message processing units are used for receiving and sending messages, and the messages are transmitted to the rear-stage dual-network redundancy unit to be processed after being received; the dual-network redundancy unit receives the messages which arrive firstly, discards the messages which arrive afterwards and transmits the messages to the message filtering processing unit; the message filtering processing unit conducts multistage filtering on the received messages and transmits the messages to the message classifying forwarding unit; the message classifying forwarding unit selects different data transmission channels according to the message types, the messages are transmitted to different CPU systems, and the different data messages are processed. According to the redundant industry Ethernet system, the processing workload of unrelated messages of the CPU systems is greatly reduced, and the stability and reliability of operation of the whole system are ensured.
Description
Technical field
The invention belongs to the Industrial Ethernet communications field of Automation of Electric Systems Intelligent Substation System, the multistage filtering of message particularly realized based on FPGA technology to improve automatic system of intelligent transformer station secondary device ethernet communication reliability and the redundancy industrial Ethernet system of business categorizing control method.
Background technology
The structure of current intelligent substation network service mainly contains following four kinds: (1) adopts the point-to-point mode combined with GOOSE network of optical fiber, and wherein, the protective device in state's net intelligent substation is " directly adopting straight jumping ", i.e. point-to-point sampling, point-to-point tripping operation.Also there is the protection framework of " directly adopting net to jump " simultaneously, concentrate on the digital transformer substation of south net; (2) adopt the mode that optical fiber is point-to-point, sampled value network combines with GOOSE network, be the point-to-point pattern of optical fiber for protective device, observing and controlling, metering, failure recovery are then from sampled value Network Capture relevant information; (3) adopt process bus mode, namely adopt the mode of AC sampling (SV) and GOOSE networking, be wherein divided into again common network or subnetting pattern; (4) adopt complete process bus mode, namely SV-9-2, IEEE 1588 and GOOSE unifies networking.
Visible, there are point-to-point communication and group-net communication two kinds of patterns in the application of current intelligent substation network service.No matter be point-to-point communication or group-net communication; network message received by the device of network consisting node might not be all required for oneself; network exists large discharge message even network storm; in order to ensure each device reliability service on network node and complete the functions such as protection observing and controlling in real time; the method of current main employing relies on the division that Ethernet switch internal needle suppresses broadcast storm and carry out VLAN on Ethernet switch, to reduce on network large discharge message to the impact of the devices such as network node protection observing and controlling.Adopt said method can also stable operation and and complete the functions such as protection, observing and controlling reliably in real time as each protection supervisory equipment of network node when can not ensure network to exist large discharge or network storm.This technology is carrying out filtering process as on the receiving end device of network node to all Ethernet messages received; remove effective message flow of the unwanted message of this receiving system, control CPU process, thus ensure that can also stable operation and complete the functions such as protection, observing and controlling reliably in real time as each protection supervisory equipment of network node when to there is large discharge or network storm on network.
As the device of network communication node in intelligent substation, the general general-purpose built-in type CPU process network message adopting RISC framework.Due to single CPU, to be limited to its disposal ability of RISC framework quite limited, generally all adopts dual-CPU system or multi-core CPU system.This technology is carried out classification at the receiving terminal as network node to different network message types and is controlled, and the different IPs of different CPU or CPU forms cpu system and processes dissimilar Ethernet message, thus improves system to the treatment effeciency of Ethernet message.
Communication network in transformer station participates in the function of protection and test directly, and its reliability will directly affect the reliability of electric substation automation system.In order to improve the reliability of communication network, the method usually adopted is network redundancy design.The application of this combine with technique substation network adopts the PRP parallel redundancy network technology based on IEC62439 to improve the reliability of network service.
Summary of the invention
In order to solve the problems of the prior art, the invention provides and a kind ofly greatly reduce the work for the treatment of amount of cpu system to irrelevant message, what ensure the stability that whole system is run and reliability has the redundancy industrial Ethernet system that the multistage filtering of message and business categorizing control.
In order to solve the problem, the technical solution used in the present invention is:
There is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control, it is characterized in that: comprise and utilize FPGA to realize two-way MAC message process unit, double-network redundant unit, packet filtering processing unit and message classification retransmission unit;
Described two-way MAC message process unit is used for receiving and sending message, and the double-network redundant cell processing message being transferred to rear class after receiving message uses;
Described double-network redundant unit receives the message arrived first, and then the message arrived after abandoning passes to packet filtering processing unit;
Described packet filtering processing unit carries out multistage filtering to the message received, and is then transferred to message classification retransmission unit;
Described message classification retransmission unit selects different data transmission channels according to type of message, is transferred to different cpu systems to process different data messages.
The aforesaid redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control, it is characterized in that: described two-way MAC message process unit is for receiving and send the message containing PRP mark, the message classification that two-way message will receive after receiving, and fill in corresponding descriptor, for the message classification retransmission unit of rear class; And add markers at the afterbody of message, for CPU processing unit.
The aforementioned redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control, it is characterized in that: described double-network redundant unit receives the message after the process of MAC message process unit, double-network redundant unit is in conjunction with the PRP identification information of message, pass through discard algorithm, receive the message arrived first, the message arrived after abandoning, after then the message received being removed PRP mark, is transferred to packet filtering processing unit.
The aforementioned redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control, it is characterized in that: the multistage filtering of described packet filtering processing unit comprises filters the target MAC (Media Access Control) address in Ethernet message, comprise Hash filters and unicast address filtration; Filter for identical CRC Ethernet message; Then carry out filtration too many levels for the characteristic quantity in electric power system application message to filter.
The aforementioned redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control, is characterized in that: when message is 1588 message time, MAC message process unit can add 1588 markers at the afterbody of message.
The aforementioned redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control, it is characterized in that: the descriptor that described message classification retransmission unit provides according to MAC message process unit, by dissimilar SV, GOOSE, 1588 and MMS message send corresponding cpu system to.
The aforementioned redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control, is characterized in that: the multistage filtering of described packet filtering processing unit comprises:
1) the civilian multicast address of docking receiving carries out HASH filtration: from message, find out destination address and carry out HASH calculating to it, result of calculation and the permission of setting being received HASH and shows to compare, and with meeting HASH table for can receive message, otherwise abandons;
2) carry out unicast address filtration: introduce unicast address table again, only meet unicast address table ground destination address message and just allow to receive;
3) carry out storing and filtering for identical CRC Ethernet message: if there is the same message of CRC check result, then can think completely for duplicate message receives, initiatively remove the message that CRC check result is the same thereafter;
4) filter for the characteristic quantity in electric power system application message: the message similarity of some message and actual needs is very high, when there is identical destination address, identical type information, ID recognition technology is adopted to reject these messages in application layer, the message of these messages and needs only has nuance, with these nuances as ID, abandon the message containing these id informations;
5) all types of message bandwidth restriction is filtered: arrange the bandwidth that each message allows in advance, when mass efficient message pours in, at the appointed time in sheet, the message number received is added up, when reaching specified quantity, this message can not continue to receive, until next timeslice is reopened.
The beneficial effect that the present invention reaches:
1, MAC ethernet communication module is on the basis of versatile MAC function, by the message classification received, and fills in corresponding descriptor register, for the FPGA classification process message module of rear class; Markers is added, for CPU process message at the afterbody of message.This improved MAC module substantially increases the efficiency of CPU process Ethernet data.
2, double-network redundant unit (PRP) meets IEC62439 specification, and the equipment that can well meet this specification with other communicates, and is beneficial to the compatibility of raising equipment; Double-network redundant unit receives the message arrived first, the message arrived after abandoning, this kind of double-network redundant communication mode, not frame losing when can realize network disaster recovery zero propagation, fault, improves network reliability high; Double-network redundant unit externally provides two network interface, internally an equivalent road network mouth, when realizing double-network redundant communication, not changing the network interface of upper layer software (applications), and effectively can alleviate the burden of cpu system deal with data.
3, packet filtering processing unit Packet Filter is used for the multistage filtering of network message, and filtering policy has been come by the configuration of bus to related register by CPU.Filter control module and carry out multistage filtering from many aspects.By to the multistage filtering of network message, greatly reduce the work for the treatment of amount of CPU to irrelevant message, ensure the stability that whole system is run and reliability.。
4, message classification retransmission unit Packet Classification & transmission selects different data transmission channels according to type of message, use different processors to process different data messages, alleviate cpu system burden, reduce the utilization rate of same data transmission channel, effective lifting Message processing and response speed, improve system real time, stability, system can change the type of message with collocation channel transmission and processor process flexibly.
When 5, supporting the precision net pair based on IEC61588.
Accompanying drawing explanation
Fig. 1 is the redundancy industrial ethernet technology general principles block diagram that the present invention utilizes FPGA to realize.
Fig. 2 is message of the present invention conveying and multistage filtering flow chart.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, there is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control, it is characterized in that: be included in FPGA inside and realize two-way MAC message process unit, double-network redundant unit, packet filtering processing unit and message classification retransmission unit;
Described two-way MAC message process unit for receive and send containing PRP mark message,
(1) send for receiving message: the message needing to send is write double-network redundant unit by corresponding MAC message process unit by cpu system, message is copied portion by double-network redundant unit, PRP mark is added in the ending of two identical messages, this mark is containing message length information, A/B net information, sequence of message number and PRP identification code, it is receive this message that target device carrys out auxiliary decision by this information, still abandons this message.The message identified containing PRP sends by two MAC message process unit simultaneously.
(2) message receives: the inner two-way MAC of FPGA receives message, and the message classification that will receive, and fill in corresponding descriptor, for the message classification retransmission unit of rear class; Markers is added, for cpu system process message at the afterbody of message; And when message is 1588 messages, 1588 markers can be added again at the afterbody of message.
Described double-network redundant unit (PRP) receives the message after the process of MAC message process unit, double-network redundant unit is in conjunction with the PRP identification information of message, pass through discard algorithm, receive the message arrived first, the message arrived after abandoning, then, after the message received being removed PRP mark, packet filtering processing unit is transferred to.
The multistage filtering of described packet filtering processing unit comprises filters the target MAC (Media Access Control) address in Ethernet message, comprises Hash filters and unicast address filtration; Filter for identical CRC Ethernet message; Carry out filtration too many levels for the characteristic quantity in electric power system application message to filter.
The descriptor that described message classification retransmission unit provides according to MAC message process unit, by dissimilar SV, GOOSE, 1588 and MMS message send corresponding cpu system to, controlled by multichannel message repeating, data flow is distincter, well can improve reliability and the extensibility of system.This improved MAC module substantially increases the efficiency of CPU process Ethernet data.
The present invention, by utilizing the feature of FPGA parallel processing, achieves PRP agreement, not frame losing when making network disaster recovery zero propagation, fault, has higher network reliability and economy preferably.The PRP design released relative to other company, this project has seamless switching time short technical advantage.
The multistage filtering of packet filtering processing unit comprises:
1) carry out HASH filtration for reception message multicast address: from message, find out destination address and HASH calculating is carried out to it, result of calculation and the permission of setting being received HASH and shows to compare, with meeting HASH table for message can be received, otherwise abandon;
2) unicast address filtration is carried out: because HASH result of calculation exists many-one situation, namely to carry out the possibility of result of HASH calculating just the same for different destination address, therefore HASH filters and can not be removed by invalid destination address message completely, therefore to introduce unicast address table again, only meet unicast address table ground destination address message and just allow to receive;
3) carry out storing and filtering for identical CRC Ethernet message: if there is the same message of CRC check result, then can think completely for duplicate message receives, initiatively remove the message that CRC check result is the same thereafter;
4) filter for the characteristic quantity in electric power system application message: when there is identical destination address, identical type information, adopt ID recognition technology to reject these messages in application layer.The message of these messages and needs may only have nuance, with these nuances as ID, abandons the message containing these id informations.The identification of ID can be the character string of specifying, the result of calculation that may also be the character string to the designated length from the position that specifies Offsets;
5) all types of message bandwidth restriction is filtered: the message too much to wherein occupied bandwidth filters, and ensures that the message that other priority are higher passes through; Arrange the bandwidth that each message allows in advance, at the appointed time add up the message number received in sheet, when reaching specified quantity, this message can not continue to receive, until next timeslice is reopened.
The present invention utilizes the unwanted message on above-mentioned multistage filtering filtering Ethernet of the FPGA in the receiving system of network node, greatly reduce the work for the treatment of amount of receiving terminal CPU to irrelevant message, even if ensure that when switch does not restrain network storm, receiving system on network still reliably, in real time can complete function, ensures the stability that whole system is run and reliability.
In sum, the present invention utilizes the mac controller of FPGA technology autonomous Design to receive Ethernet message, and condition unwanted message on multistage filtering filtering Ethernet that can arrange according to receiving terminal CPU.By to the multistage filtering function of network message, greatly reduce the work for the treatment of amount of device CPU to irrelevant message, ensure the stability that whole system is run and reliability.
The present invention utilizes the feature of FPGA parallel processing, and stand-alone development achieves PRP agreement, not frame losing when making network disaster recovery zero propagation, fault, has higher network reliability and economy preferably.
The present invention is according to the feature descriptor of network message, adopt classification control technology to carry out classification to different type of message to control, by SV, GOOSE, 1588 and MMS message send corresponding CPU treatment system to, controlled by multichannel message repeating, data flow is distincter, well can improve reliability and the extensibility of system.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (7)
1. there is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control, it is characterized in that: comprise two-way MAC message process unit, double-network redundant unit, packet filtering processing unit and message classification retransmission unit;
Described two-way MAC message process unit is used for receiving and sending message, and the double-network redundant cell processing message being transferred to rear class after receiving message uses;
Described double-network redundant unit receives the message arrived first, and then the message arrived after abandoning passes to packet filtering processing unit;
Described packet filtering processing unit carries out multistage filtering to the message received, and is then transferred to message classification retransmission unit;
Described message classification retransmission unit selects different data transmission channels according to type of message, is transferred to different cpu systems to process different data messages.
2. the redundancy industrial Ethernet system with the multistage filtering of message and business categorizing control according to claim 1, it is characterized in that: described two-way MAC message process unit is for receiving and send the message containing PRP mark, the message classification that two-way message will receive after receiving, and fill in corresponding descriptor, for the message classification retransmission unit of rear class; And add markers at the afterbody of message, for CPU processing unit.
3. there is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control according to claim 2, it is characterized in that: described double-network redundant unit receives the message after the process of MAC message process unit, double-network redundant unit is in conjunction with the PRP identification information of message, pass through discard algorithm, receive the message arrived first, the message arrived after abandoning, after then the message received being removed PRP mark, is transferred to packet filtering processing unit.
4. there is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control according to claim 3, it is characterized in that: the multistage filtering of described packet filtering processing unit comprises filters the target MAC (Media Access Control) address in Ethernet message, comprise Hash filters and unicast address filtration; Filter for identical CRC Ethernet message; Then carry out filtration too many levels for the characteristic quantity electric power system application message from application layer to filter.
5. have the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control according to claim 4, it is characterized in that: when message is 1588 message time, MAC message process unit can add 1588 markers at the afterbody of message.
6. there is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control according to claim 5, it is characterized in that: the descriptor that described message classification retransmission unit provides according to MAC message process unit, by dissimilar SV, GOOSE, 1588 and MMS message send corresponding cpu system to.
7. there is the redundancy industrial Ethernet system of the multistage filtering of message and business categorizing control according to claim 4, it is characterized in that: the multistage filtering of described packet filtering processing unit comprises:
1) carry out HASH filtration for reception message multicast address: from message, find out destination address and HASH calculating is carried out to it, result of calculation and the permission of setting being received HASH and shows to compare, with meeting HASH table for message can be received, otherwise abandon;
2) carry out unicast address filtration: introduce unicast address table again, only meet unicast address table ground destination address message and just allow to receive;
3) carry out storing and filtering for identical CRC Ethernet message: if there is the same message of CRC check result, then can think completely for duplicate message receives, initiatively remove the message that CRC check result is the same thereafter;
4) filter for the characteristic quantity in electric power system application message: the message similarity of some message and actual needs is very high, when there is identical destination address, identical type information, ID recognition technology is adopted to reject these messages in application layer, the message of these messages and needs only has nuance, with these nuances as ID, abandon the message containing these id informations;
5) all types of message bandwidth restriction is filtered: arrange the bandwidth that each message allows in advance, when mass efficient message pours in, at the appointed time in sheet, the message number received is added up, when reaching specified quantity, this message can not continue to receive, until next timeslice is reopened.
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| CN201410836623.2A CN104539408A (en) | 2014-12-30 | 2014-12-30 | Redundant industry Ethernet system with message multistage filtering function and service classification control function |
| PCT/CN2015/089317 WO2016107210A1 (en) | 2014-12-30 | 2015-09-10 | Redundant industrial ethernet system with multistage packet filtering and service classification control |
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| CN105530065B (en) * | 2015-12-10 | 2018-07-06 | 国电南瑞科技股份有限公司 | For system and method at IEEE1588 pairs of PRP/HSR |
| CN105530065A (en) * | 2015-12-10 | 2016-04-27 | 国电南瑞科技股份有限公司 | IEEE1588 time synchronization system and method based on PRP/HSR (Parallel Redundancy Protocol)/(High Availability Seamless Ring Network Protocol) |
| CN105978762B (en) * | 2016-04-27 | 2019-02-01 | 刘巍 | Redundant Ethernet data transmission set, system and method |
| CN105978652A (en) * | 2016-04-27 | 2016-09-28 | 刘巍 | Synchronous time comparing equipment of redundant Ethernet, system and method thereof |
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| CN106209694A (en) * | 2016-07-25 | 2016-12-07 | 国电南瑞科技股份有限公司 | A kind of industrial ethernet switch of integrated PRP/HSR redundancy protocol |
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| CN107547303A (en) * | 2017-07-06 | 2018-01-05 | 中国南方电网有限责任公司 | The method for supporting the IED equipment processing NodesTable of PRP or HSR agreements |
| CN107566294A (en) * | 2017-07-06 | 2018-01-09 | 中国南方电网有限责任公司 | A kind of network storm suppressing method suitable for IEC62439 standards |
| CN110289992A (en) * | 2019-06-04 | 2019-09-27 | 新华三信息安全技术有限公司 | A kind of message processing method and device |
| CN110289992B (en) * | 2019-06-04 | 2022-07-22 | 新华三信息安全技术有限公司 | Message processing method and device |
| CN112666914A (en) * | 2021-03-17 | 2021-04-16 | 浙江国利信安科技有限公司 | Non-inductive switching redundant communication implementation method based on EPA bus |
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| Publication number | Publication date |
|---|---|
| WO2016107210A1 (en) | 2016-07-07 |
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