CN104125032A - SDH (Synchronous Digital Hierarchy) based wide-area peer-to-peer communication system and method - Google Patents
SDH (Synchronous Digital Hierarchy) based wide-area peer-to-peer communication system and method Download PDFInfo
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Abstract
The invention provides an SDH (Synchronous Digital Hierarchy) based wide-area peer-to-peer communication system and method. An area protection and control device and an EOS board card of an SDH device are interacted through an FE interface due to the specific message switching capability of the EOS board card of the SDH device, the area protection and control device sends multicast messages to the EOS board card of the SDH device through the FE interface, the EOS board card receives and identifies a VLAN (Virtual Local Area Network) tag in the multicast messages and judges whether the VLAN multicast message exist in a VLAN configuration list or not; transmitting the VLAN multicast message if the VLAN multicast message exists and not transmitting if the VLAN multicast message does not exist. The integral system can greatly improve the network partition efficiency of an area protection and control system which is large in size and complex in communication relationship due to the fact that a one-send-multi-receive peer-to-peer communication mechanism is achieved on the SDH device and enables the area protection and control system to be provided with clear network architecture and later maintenance and management to be convenient.
Description
Technical field
The present invention relates to wide-area communication field, particularly relate to wide area peer communication system and method based on SDH.
Background technology
The transmission network of electric power system at present mainly adopts SDH (Synchronous Digital Hierarchy, SDH (Synchronous Digital Hierarchy)) equipment carries out networking, SDH equipment carries out transfer of data based on time-division multiplex technology, has service transmission bandwidth and fixes, high reliability.
The transmission of locality protection and control system multicast message is carried out in electric power system based on transmission network; existing locality protection and control system mainly adopt special-purpose 2M passage (E1 passage) mode to carry out delineation of activities; this causes every locality protection and control appliance need to provide a plurality of E1 channel interfaces and SDH equipment to carry out alternately; SDH equipment also need to be opened different designated lanes for each E1 interface; this will cause locality protection and control system transmission network delineation of activities confusion; be unfavorable for safeguarding, limited to a certain extent the expansion of electric power system business.
Summary of the invention
Based on this, be necessary for the existing wide area peer communication system transmission network delineation of activities inefficiency based on SDH, the network architecture is chaotic, be unfavorable for safeguarding, limited the problem of the expansion of electric power system business, provide that a kind of transmission network delineation of activities efficiency is high, network architecture wide area peer communication system and the method based on SDH clearly.
A kind of wide area peer communication system based on SDH, comprise SDH equipment and locality protection and control appliance, wherein, described SDH equipment is built-in with EOS board, described EOS board has FE interface, and described locality protection is connected with described EOS board by described FE interface with control appliance;
Described locality protection and control appliance send multicast message to described EOS board by FE interface; described EOS board receives described multicast message; identify VLAN (the Virtual Local Area Network that described multicast message carries; VLAN) label; and travel through self VLAN configured list; judge the VLAN label that whether exists described multicast message to carry in self VLAN configured list; if exist; the multicast message of this VLAN label is forwarded according to configuration; if do not exist, do not forward the multicast message of this VLAN label.
A wide area peer-to-peer communications method based on SDH, comprises step:
Locality protection is connected by the FE interface EOS board built-in with SDH equipment with control appliance;
Receive described locality protection and control appliance and by described FE interface, send the multicast message of described EOS board;
By described EOS board, identify the VLAN label that described multicast message carries;
Traversal EOS board VLAN configured list, judges the VLAN label that whether exists described multicast message to carry in EOS board VLAN configured list, if exist, the multicast report of this VLAN label is forwarded, if do not exist, does not forward the multicast message of this VLAN label.
The present invention is based on wide area peer communication system and the method for SDH, by FE interface by locality protection and control appliance and SDH equipment connection, utilize the message switching ability of SDH equipment EOS board self, locality protection and control appliance are undertaken alternately by FE interface and SDH equipment EOS board, locality protection and control appliance send multicast message in SDH equipment EOS board by FE interface, EOS board receives after multicast message, VLAN label in identification multicast message, and judge in VLAN configured list, whether there is this VLAN multicast message, if exist, this VLAN multicast message is forwarded, if there is not this VLAN multicast message, do not forward.Whole system; by realize the peer-to-peer communications mechanism of multicast on SDH equipment; thoroughly solve existing electric power system transmission network and too relied on the drawback that special-purpose E1 passage carries out delineation of activities; for larger; the locality protection of correspondence complexity and control system; by greatly improving the efficiency of network division, make locality protection and control system there is the network architecture clearly, facilitate the maintenance and management in later stage.
Accompanying drawing explanation
Fig. 1 is the networking structure schematic diagram that the present invention is based on first embodiment of wide area peer communication system of SDH;
Fig. 2 is the networking structure schematic diagram that the present invention is based on second embodiment of wide area peer communication system of SDH;
Fig. 3 the present invention is based on EOS board configuration schematic diagram in one of them embodiment of wide area peer communication system of SDH;
Fig. 4 the present invention is based on schematic flow sheet in one of them embodiment of wide area peer-to-peer communications method of SDH.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawings and embodiment, the present invention is further elaborated.Should be appreciated that concrete enforcement described herein, only in order to explain the present invention, does not limit the present invention.
As shown in Figure 1, a kind of wide area peer communication system based on SDH, comprise SDH equipment 100 and locality protection and control appliance 200, wherein, described SDH equipment 100 is built-in with EOS board, described EOS board has FE interface, and described locality protection is connected with described EOS board by described FE interface with control appliance 200;
Described locality protection and control appliance 200 send multicast message to described EOS board by FE interface; described EOS board receives described multicast message; identify the VLAN label that described multicast message carries; and travel through self VLAN configured list; judge the VLAN label that whether exists described multicast message to carry in self VLAN configured list, if exist, the multicast message of this VLAN label is forwarded according to configuration; if do not exist, do not forward the multicast message of this VLAN label.
In a specific embodiment, the wide area peer communication system detailed operation process that the present invention is based on SDH is as follows therein:
Locality protection and control appliance are undertaken alternately by the EOS board of FE interface and SDH equipment, locality protection and control appliance send multicast message with VLAN label in SDH equipment EOS board, EOS board carries out VLAN configuration in advance, correspondence between configuration rule and locality protection and control appliance matches, EOS board is processed this message according to entering the VLAN label that board message carries, VLAN label is in VLAN allocation list, and this message will be forwarded according to VLAN configuring condition in allocation list; VLAN label is not in VLAN allocation list, and this message will not be forwarded.EOS board is except providing the FE interface (also can be for a plurality of; according to the configuration quantity of the locality protection in actual each transformer station and control appliance, determine) and several virtual transmission passage, each virtual transmission passage is corresponding with a virtual transmission passage of offside SDH equipment EOS board.The VLAN multicast message that enters EOS board from FE interface is forwarded to by EOS board the virtual transmission passage of appointment and sends in the EOS board of offside SDH equipment, offside EOS board determines the forwarding of this message by the VLAN configuring condition of this board, as message need to output to locality protection and control appliance from the FE interface of this EOS board, a message of feasible region protection and control equipment is received; As message need to forward from the appointment virtual transmission passage of this EOS board, realized the once forwarding of message.Whole system has realized locality protection and the control appliance multicast message forwarding mechanism based on VLAN on SDH equipment EOS board; by realize the configuration of VLAN rule on EOS board; realization forwards management to zones of different protection and control device multicast message, thereby realizes the peer-to-peer communications mechanism of multicast.
The present invention is based on the wide area peer communication system of SDH, by FE interface by locality protection and control appliance and SDH equipment connection, utilize the message switching ability of SDH equipment EOS board self, locality protection and control appliance are undertaken alternately by FE interface and SDH equipment EOS board, locality protection and control appliance send multicast message in SDH equipment EOS board by FE interface, EOS board receives after multicast message, VLAN label in identification multicast message, and judge in VLAN configured list, whether there is this VLAN label, if exist, this VLAN multicast message is forwarded, if there is not this VLAN multicast message, do not forward.Whole system; by realize the peer-to-peer communications mechanism of multicast on SDH equipment; thoroughly solve existing electric power system transmission network and too relied on the drawback that special-purpose E1 passage carries out delineation of activities; for larger; the locality protection of correspondence complexity and control system; by greatly improving the efficiency of network division, make locality protection and control system there is the network architecture clearly, facilitate the maintenance and management in later stage.
In an embodiment, described SDH equipment is identical with the quantity of control appliance with described locality protection therein, and single described locality protection is connected with the EOS board of single described SDH equipment by described FE interface with control appliance.
The quantity of SDH equipment and locality protection and control appliance coexists mutually and guarantees, under prerequisite that the network architecture is complete, to have simplified to greatest extent whole network configuration, is beneficial to the maintenance and management in later stage.
In an embodiment, described SDH number of devices is a plurality of therein, and a plurality of described SDH equipment connects successively, forms closed hoop communication network.
Therein in an embodiment, described EOS board is built-in with virtual transmission passage, while there is the VLAN label that described multicast message carries in EOS board VLAN configured list, described EOS board forwards the multicast message of current VLAN label by virtual transmission passage.
In the present embodiment, EOS board is built-in with virtual transmission passage, when having data to forward, by virtual transmission passage, transmits, and has guaranteed the accurate and efficient of transfer of data.
In order further to explain in detail, the technical scheme of the wide area peer communication system that the present invention is based on SDH and the effect of bringing thereof employing one specific embodiment is described below.
As shown in Figure 2, in this specific embodiment, total A, a B, C, D, six SDH equipment of E and F and with its locality protection being connected by FE interface and control appliance, six SDH equipment composition ring-type communication networks.The multicast message that A station sends is received by B station, C station, D station, E station and F station; suppose that each locality protection and control appliance send multicast message and need bandwidth 2M; suppose that A station sends multicast message and arrives B and stand erectly to connect by A station-B and stand; A station sends multicast message need to be through B station to C station; A station sends multicast message need to be through B station, C station to D station; A station transmission multicast message need to be through F station to E station, and transmission multicast message in A station is stood erectly to connect by A station-F to F and stood.As shown in Figure 2, the multicast message that B station sends is received by A station and C station, suppose that B station sends multicast message and arrives A and stand erectly to connect by B station-A and stand, and the B transmission multicast message of standing is stood erectly to connect by B station-C to C and stood.The transmission situation of other websites and A station and B station situation are similar, and the A of take here stands and packet sending and receiving introduction is carried out as example in B station.Therefore, for A station and B station business, SDH equipment need to distribute bandwidth situation to be: it is 2M that A station-B distributes bandwidth in station, and it is 4M that B station-C distributes bandwidth in station, and it is 2M that C station-D distributes bandwidth in station, and it is 2M that bandwidth is distributed at F station, A station, and it is 2M that F station-E distributes bandwidth in station.A station-B station 2M bandwidth has been carried A the stand 2M service at A station of the 2M service at B station and B of standing, because activate the service for SDH equipment, is two-way.Supposing the locality protection of A station and control appliance to send multicast message, to carry VLAN ID be 2 VLAN label, and it is 3 VLAN label that B station locality protection and control appliance transmission multicast message carry VLAN ID.
Fig. 3 is EOS board configuration schematic diagram, wherein, it is 2 and 3 multicast message that VCTRUNK (the virtual transmission passage) 1 of A station SDH equipment EOS board and FE interface need to support to receive and dispatch VLAN ID, and it is 2 multicast message that VCTRUNK2 need to support to receive and dispatch VLAN ID; It is 2 and 3 multicast message that VCTRUNK1, the VCTRUNK2 of B station SDH equipment EOS board and FE interface need to support to receive and dispatch VLAN ID; It is 2,3 multicast message that VCTRUNK1, the FE interface of C station SDH equipment EOS board need to support to receive and dispatch VLAN ID, and it is 2 multicast message that VCTRUNK2 need to support to receive and dispatch VLAN ID; It is 2 multicast message that the VCTRUNK1 of D station SDH equipment EOS board and FE interface need to support to receive and dispatch VLAN ID, it is 2 multicast message that the VCTRUNK1 of E station SDH equipment EOS board and FE interface need to support to receive and dispatch VLAN ID, and it is 2 multicast message that VCTRUNK1, the VCTRUNK2 of F station SDH equipment EOS board and FE interface need to support to receive and dispatch VLAN ID.
A station sends multicast message process:
1, the locality protection at A station and control appliance timed sending multicast message are in SDH equipment EOS board, and EOS board is that 2, EOS board forwards the packet to EOS board VCTRUNK1 and VCTRUNK2 both direction by the VLAN ID in identification message.
2, B station SDH equipment EOS board receives by VCTRUNK1 the multicast message that A station sends over; VLAN ID label in identification message is 2; EOS board forwards the packet to EOS board VCTRUNK2 and FE interface, and B station locality protection and control appliance receive by FE interface multicast message and process.
3, C station SDH equipment EOS board receives by VCTRUNK1 the multicast message that B station sends over; VLAN ID label in identification message is 2; EOS board forwards the packet to EOS board VCTRUNK2 and FE interface, and C station locality protection and control appliance receive by FE interface multicast message and process.
4, D station SDH equipment EOS board receives by VCTRUNK1 the multicast message that C station sends over; VLAN ID label in identification message is 2; EOS board forwards the packet to EOS board FE interface, and D station locality protection and control appliance receive by FE interface multicast message and process.
5, F station SDH equipment EOS board receives by VCTRUNK1 the multicast message that A station sends over; VLAN ID label in identification message is 2; EOS board forwards the packet to EOS board VCTRUNK2 and FE interface, and F station locality protection and control appliance receive by FE interface multicast message and process.
6, E station SDH equipment EOS board receives by VCTRUNK1 the multicast message that F station sends over; VLAN ID label in identification message is 2; EOS board forwards the packet to EOS board FE interface, and E station locality protection and control appliance receive by FE interface multicast message and process.
B station sends multicast message process:
1, the locality protection at B station and control appliance timed sending multicast message are in SDH equipment EOS board, and EOS board is that 3, EOS board forwards the packet to EOS board VCTRUNK1 and VCTRUNK2 both direction by the VLAN ID in identification message.
2, C station SDH equipment EOS board receives by VCTRUNK1 the multicast message that B station sends over; VLAN ID label in identification message is 3; EOS board forwards the packet to EOS board FE interface, and C station locality protection and control appliance receive by FE interface multicast message and process.
A station SDH equipment EOS board receives by VCTRUNK1 the multicast message that B station sends over; VLAN ID label in identification message is 3; EOS board forwards the packet to EOS board FE interface, and A station locality protection and control appliance receive by FE interface multicast message and process.
As shown in Figure 4, a kind of wide area peer-to-peer communications method based on SDH, comprises step:
S100: locality protection is connected by the FE interface EOS board built-in with SDH equipment with control appliance.
Locality protection is connected by the FE interface EOS board built-in with SDH equipment with control appliance, the message switching ability of SDH equipment EOS board self, and locality protection and control appliance carry out data interaction by FE interface and SDH equipment EOS board.
S200: receive described locality protection and control appliance and send the multicast message of described EOS board by described FE interface.
The multicast message that EOS board receiving area protection and control equipment sends.Multicast message can be chosen as L2 layer multicast message or L3 layer multicast message, and EOS board forwards management by vlan technology, and the different demarcation by VLAN on FE interface and VCTRUNK is realized multicast message and forwarded management.
S300: identify the VLAN label that described multicast message carries by described EOS board.
S400: traversal EOS board VLAN configured list, judge the VLAN label that whether exists described multicast message to carry in EOS board VLAN configured list, if exist, the multicast report of this VLAN label is forwarded, if do not exist, do not forward the multicast message of this VLAN label.
The present invention is based on the wide area peer-to-peer communications method of SDH, by FE interface by locality protection and control appliance and SDH equipment connection, locality protection and control appliance send multicast message in SDH equipment EOS board by FE interface, EOS board receives after multicast message, VLAN label in identification multicast message, and according to the VLAN configuring condition of this EOS board, this VLAN multicast message is forwarded, if there is this VLAN label in VLAN configured list, this VLAN multicast message is forwarded, if there is not this VLAN label in VLAN configured list, this VLAN multicast message does not forward.Whole system; by realize the peer-to-peer communications mechanism of multicast on SDH equipment; thoroughly solve existing electric power system transmission network and too relied on the drawback that special-purpose E1 passage carries out delineation of activities; for larger; the locality protection of correspondence complexity and control system; by greatly improving the efficiency of network division, make locality protection and control system there is the network architecture clearly, facilitate the maintenance and management in later stage.
Therein in an embodiment, while there is not the recording of multicast message of current VLAN label in EOS board VLAN configured list, do not forward the multicast message of current VLAN label, and abandon the multicast message of current VLAN label.
While there is not the VLAN label that described multicast message carries in EOS board VLAN configured list, do not forward described multicast message, and abandon described multicast message.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (6)
1. the wide area peer communication system based on SDH, it is characterized in that, comprise SDH equipment and locality protection and control appliance, wherein, described SDH equipment is built-in with EOS board, described EOS board has FE interface, and described locality protection is connected with described EOS board by described FE interface with control appliance;
Described locality protection and control appliance send multicast message to described EOS board by FE interface; described EOS board receives described multicast message; identify the VLAN label that described multicast message carries; and travel through self VLAN configured list; judge the VLAN label that whether exists described multicast message to carry in self VLAN configured list, if exist, the multicast message of this VLAN label is forwarded according to configuration; if do not exist, do not forward the multicast message of this VLAN label.
2. the wide area peer communication system based on SDH according to claim 1; it is characterized in that; described SDH equipment is identical with the quantity of control appliance with described locality protection, and single described locality protection is connected with the EOS board of single described SDH equipment by described FE interface with control appliance.
3. the wide area peer communication system based on SDH according to claim 1 and 2, is characterized in that, described SDH number of devices is a plurality of, and a plurality of described SDH equipment connects successively, forms closed hoop communication network.
4. the wide area peer communication system based on SDH according to claim 1 and 2, it is characterized in that, described EOS board is built-in with virtual transmission passage, while there is the VLAN label that described multicast message carries in EOS board VLAN configured list, described EOS board forwards the multicast message of current VLAN label by virtual transmission passage.
5. the wide area peer-to-peer communications method based on SDH, is characterized in that, comprises step:
Locality protection is connected by the FE interface EOS board built-in with SDH equipment with control appliance;
Receive described locality protection and control appliance and by described FE interface, send the multicast message of described EOS board;
By described EOS board, identify the VLAN label that described multicast message carries;
Traversal EOS board VLAN configured list, judges the VLAN label that whether exists described multicast message to carry in EOS board VLAN configured list, if exist, the multicast report of this VLAN label is forwarded, if do not exist, does not forward the multicast message of this VLAN label.
6. the wide area peer-to-peer communications method based on SDH according to claim 5, is characterized in that, while there is not the VLAN label that described multicast message carries in EOS board VLAN configured list, does not forward described multicast message, and abandons described multicast message.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110995603A (en) * | 2019-12-09 | 2020-04-10 | 广州信天翁信息科技有限公司 | Many-to-many transmission method of data and heterogeneous data transmission layer |
| CN111009966A (en) * | 2019-11-22 | 2020-04-14 | 贵州电网有限责任公司 | Data interaction system, method and device of transformer substation equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7031324B1 (en) * | 1999-03-22 | 2006-04-18 | Cisco Technology, Inc. | Local area network/wide area network switch |
| CN1832451A (en) * | 2005-03-09 | 2006-09-13 | 华为技术有限公司 | Transmission method and processing device of Ethernet service signal in wavelength division multiplexing network |
| CN102664456A (en) * | 2012-04-25 | 2012-09-12 | 广东电网公司珠海供电局 | Multicast management method and device for intelligent substation process level |
| CN103151842A (en) * | 2013-03-18 | 2013-06-12 | 国家电网公司 | Hierarchical protection control system facing regional power grid |
| CN103457749A (en) * | 2013-08-29 | 2013-12-18 | 国家电网公司 | Method for restraining multicast flooding in intelligent substation |
-
2014
- 2014-06-30 CN CN201410310151.7A patent/CN104125032B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7031324B1 (en) * | 1999-03-22 | 2006-04-18 | Cisco Technology, Inc. | Local area network/wide area network switch |
| CN1832451A (en) * | 2005-03-09 | 2006-09-13 | 华为技术有限公司 | Transmission method and processing device of Ethernet service signal in wavelength division multiplexing network |
| CN102664456A (en) * | 2012-04-25 | 2012-09-12 | 广东电网公司珠海供电局 | Multicast management method and device for intelligent substation process level |
| CN103151842A (en) * | 2013-03-18 | 2013-06-12 | 国家电网公司 | Hierarchical protection control system facing regional power grid |
| CN103457749A (en) * | 2013-08-29 | 2013-12-18 | 国家电网公司 | Method for restraining multicast flooding in intelligent substation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111009966A (en) * | 2019-11-22 | 2020-04-14 | 贵州电网有限责任公司 | Data interaction system, method and device of transformer substation equipment and storage medium |
| CN110995603A (en) * | 2019-12-09 | 2020-04-10 | 广州信天翁信息科技有限公司 | Many-to-many transmission method of data and heterogeneous data transmission layer |
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Free format text: CORRECT: INVENTOR; FROM: LIU YUQUAN YANG GUI SUN LEI GAO HONGJUN LIU JINSHENG FEI XIANG PENG AN CUI ZHAOYANG TO: LIU YUQUAN YANG GUI SUN LEI GAO HONGJUN FEI XIANG PENG AN CUI ZHAOYANG FENG YINGJU |
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Effective date of registration: 20150115 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: GUANGZHOU POWER SUPPLY Co.,Ltd. Applicant after: NR ELECTRIC Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |
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Effective date of registration: 20231031 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee before: NR ELECTRIC Co.,Ltd. Effective date of registration: 20231031 Address after: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Patentee after: NR ELECTRIC Co.,Ltd. Address before: 510620, No. two, No. 2, Tianhe South Road, Guangzhou, Guangdong, Tianhe District Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. Patentee before: NR ELECTRIC Co.,Ltd. |