CN206559565U - Terminal communication access network EPON ring-shaped network structures - Google Patents
Terminal communication access network EPON ring-shaped network structures Download PDFInfo
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- CN206559565U CN206559565U CN201720129924.0U CN201720129924U CN206559565U CN 206559565 U CN206559565 U CN 206559565U CN 201720129924 U CN201720129924 U CN 201720129924U CN 206559565 U CN206559565 U CN 206559565U
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Abstract
The utility model provides a kind of terminal communication access network EPON ring-shaped network structures, including ONU, OLT, convergence switch, SDH equipment；SDH equipment is respectively provided with each transformer station, and the SDH equipment of each transformer station constitutes SDH backbone ring net by annular networking mode；OLT and convergence switch are installed in each transformer station in SDH backbone ring net；ONU is installed in distribution terminal website；Every ONU passes through the OLT of active and standby link connection to two adjacent substations respectively；In transformer station, the convergence switch of OLT and our station is interconnected by two layers of trunk interface；Convergence switch connects the SDH equipment of our station；Interconnected between convergence switch between transformer station by trunk interface.It can make full use of the existing transfer resource of communication backbone, improve optical cable utilization rate, it is business data transmission colleges and universities, reliable.
Description
Technical field
The utility model is related to a kind of power distribution communication network, the ring-like networking knots hand in hand of especially new power system EPON
Structure.
Background technology
Power distribution communication host's Flow Technique has industrial ethernet switch, EPON, wireless private network etc., considers various technologies
Economical, stability and reliability, most of Utilities Electric Co.'s selection is used as power distribution communication net networking mode using EPON technologies.
In general, communication terminal access network and communication backbone are in Different Plane, and network topology is all independent planning, EPON system
Middle OLT is deployed in transformer station, and ONU is deployed in the distribution terminal website such as each ring main unit, switching station, and network takes protection side hand in hand
Formula, each ONU by standby usage both links respectively on be coupled to two OLT devices, OLT is set by two layer interfaces with our station SDH
It is standby to be connected, main station system is sent data to by SDH special lines, it is ensured that N-1 failure lower network normal operations.Common network rule
Draw as shown in Figure 1；
But it is due to terminal communication access network broad covered area, it is large number of to be related to website, in planning, lacks suitable side
Method is considered as a whole.If taking OLT to pass through the method for the direct first line of a couplet main website of special line, although simplify network structure, but bring
Single Point of Faliure influences the hidden danger of the whole network, and each transformer station is required for opening the special line for going to main website, greatly causes network
Middle bandwidth waste.
The content of the invention
The purpose of this utility model is to provide a kind of reliable, efficient terminal communication access network EPON ring-shaped network knots
Structure.The technical solution adopted in the utility model is：
A kind of terminal communication access network EPON ring-shaped network structures, including ONU, OLT, convergence switch, SDH equipment；
SDH equipment is respectively provided with each transformer station, and the SDH equipment of each transformer station is made up of annular networking mode
SDH backbone ring net；
OLT and convergence switch are installed in each transformer station in SDH backbone ring net；Installed in distribution terminal website
ONU；Every ONU passes through the OLT of active and standby link connection to two adjacent substations respectively；
In transformer station, the convergence switch of OLT and our station is interconnected by two layers of trunk interface；Convergence switch is connected
The SDH equipment of our station；Interconnected between convergence switch between transformer station by trunk interface.
Further, the part VLAN of the trunk interface transparent transmission between convergence switch is used to run ospf protocol, realizes
All convergence switch networking OSPF looped networks, other service VLAN are used to provide the heartbeat between the primary, spare OLT of adjacent substations
Function.
Further, SDH backbone ring net is transparent transmission network.
Further, the convergence switch is three-tier switch.
Further, ONU connects the OLT in transformer station by optical splitter.
The utility model has the advantage of：
1. the EPON network architectures and power telecom network backbone configuration are consistent, and network rule are carried out beneficial to operation maintenance personnel
Draw and operation maintenance, influence business model can quickly be judged according to transformer station where OLT when especially carrying out maintenance risk analysis
Enclose；
2. ring-shaped network can make full use of the existing transfer resource of communication backbone, improve optical cable utilization rate, reduce optical cable
Lay cost；
3. it is reliable, efficiently solve EPON and hand in hand broadcast storm hidden danger that ring-shaped network brought and potential to switch unsuccessfully
The problem of.
Brief description of the drawings
Fig. 1 is that existing network plans schematic diagram.
Fig. 2 is annular networking structural representation of the present utility model.
Embodiment
With reference to specific drawings and examples, the utility model is described in further detail.
As shown in Fig. 2 at present, power communication SDH backbone networks use ring-shaped network mode, that is to say, that in each power transformation
SDH equipment is respectively provided with standing, and the SDH equipment of each transformer station constitutes SDH backbone ring net by annular networking mode；
When carrying out terminal communication access network EPON overall plan of network, in each transformer station in SDH backbone ring net
OLT and convergence switch are installed, convergence switch needs to use three-tier switch；At the distribution terminal station such as ring main unit, switching station
ONU is installed in point；Wherein, ONU is responsible for capturing service data, and OLT is responsible for converging and uploads ONU data；ONU is especially by light splitting
OLT in device connection transformer station；
In transformer station, the convergence switch of OLT and our station is interconnected by two layers of trunk interface；Convergence switch can lead to
Cross netting twine or optical fiber connects the SDH equipment of our station；
It is transparent transmission mode between SDH equipment, therefore SDH backbone ring net is the convergence between transparent transmission network, transformer station
Interconnected between interchanger by trunk interface, the Trunk links between convergence switch include converging in a Substation Station
Poly- interchanger is to the link of SDH equipment, the optical fiber between standing between SDH equipment, and the SDH equipment in another connected Substation Station is extremely
The link of convergence switch（Heartbeat hereinafter also refers to this section of link）；The part VLAN of the trunk interface transparent transmission is used to transport
Row ospf protocol, realizes all convergence switch networking OSPF looped networks, and other VLAN are primary, spare for providing adjacent substations
Heartbeat function between OLT, being responsible for will be main（It is standby）With convergence switch where OLT data transfers to Service Gateway；SDH is responsible for carrying
For transparent channel.The EPON network topologies and SDH backbone networks formed under this mode is completely the same；
Every ONU passes through the OLT of active and standby link connection to two adjacent substations respectively.OLT is after ONU data are received
Checked, if the affiliated Service Gateways of the ONU（Service Gateway is an OLT）Layer switch is converged positioned at our station, then OLT is straight
Connect and data are reached into our station convergence layer switch, then main website is sent to by OSPF looped networks；If the affiliated Service Gateways of the ONU exist
The convergence switch of adjacent substations, then send data to data penetration transmission to phase after our station convergence switch by heartbeat
Adjacent transformer station's convergence switch, then main website is sent to by OSPF looped networks.
Under this networking mode, access network is significantly divided into Access Layer（ONU）, convergence-level（OLT, interchanger, SDH
Equipment）, core layer（Main station system）, network layer is clear, definite functions, beneficial to O＆M and the later stage network capacity extension.Simultaneously as
The uniformity of network topology, when carrying out the network planning, transformation, dilatation, the business of backbone network and access network can be considered simultaneously
Bandwidth and construction demand, it is ensured that the synchronism of network.
When carrying out optical cable maintenance, because each ONU can only transfer data to adjacent Liang Ge transformer stations, be not in
Optical cable carries the situation of business under transformer station C between transformer station A-B, therefore when optical cable is overhauled between carrying out transformer station A-B, can
Quickly to judge the access network service that coverage is carried as light path between A-B, it is not necessary to log in OLT again or interchanger is carried out
Service inquiry.Further, since being not directed through fiber optic communication between interchanger, it is possible to use key SDH network carries out data biography
It is defeated, it is a large amount of to save backbone network cable resource.
But be due to form ring network, convergence layer switch in the presence of STP protocol, may judge by accident loop so as to
The heartbeat failure blocked between part interconnection port in looped network, primary, spare OLT, causes pretection switch failure hand in hand.Therefore
Need to open MSTP agreements on every convergence switch, for our station service VLAN configuration stp example, realize adjacent substations
Heartbeat communication between two primary, spare OLT is normal, it is ensured that in the case of failure, standby usage link can smoothly switch.
The term that the utility model is related to is explained as follows：
EPON：Ethernet Passive Optical Network (Ethernet passive optical network)；
OLT:Opticalline terminal (optical line terminals）；
ONU ：OpticalNetwork Unit (optical network unit)；
Trunk：Trunking port；
Ospf protocol：Open Shortest Path First open type shortest path priority protocols；
STP protocol：Spanning-Tree Protocol；
MSTP agreements：Multiple Spanning Tree Protocol.
Claims (5)
1. a kind of terminal communication access network EPON ring-shaped network structures, it is characterised in that including ONU, OLT, convergence switch,
SDH equipment；
SDH equipment is respectively provided with each transformer station, and the SDH equipment of each transformer station constitutes SDH bones by annular networking mode
Dry looped network；
OLT and convergence switch are installed in each transformer station in SDH backbone ring net；ONU is installed in distribution terminal website；
Every ONU passes through the OLT of active and standby link connection to two adjacent substations respectively；
In transformer station, the convergence switch of OLT and our station is interconnected by two layers of trunk interface；Convergence switch connects our station
SDH equipment；Interconnected between convergence switch between transformer station by trunk interface.
2. terminal communication access network EPON ring-shaped network structures as claimed in claim 1, it is characterised in that
The part VLAN of trunk interface transparent transmission between convergence switch is used to run ospf protocol, realizes that all convergences are exchanged
Machine networking OSPF looped networks, other service VLAN are used to provide the heartbeat function between the primary, spare OLT of adjacent substations.
3. terminal communication access network EPON ring-shaped network structures as claimed in claim 1, it is characterised in that
SDH backbone ring net is transparent transmission network.
4. terminal communication access network EPON ring-shaped network structures as claimed in claim 1, it is characterised in that
The convergence switch is three-tier switch.
5. terminal communication access network EPON ring-shaped network structures as claimed in claim 1, it is characterised in that
ONU connects the OLT in transformer station by optical splitter.
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| CN201720129924.0U CN206559565U (en) | 2017-02-14 | 2017-02-14 | Terminal communication access network EPON ring-shaped network structures |
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| CN201720129924.0U CN206559565U (en) | 2017-02-14 | 2017-02-14 | Terminal communication access network EPON ring-shaped network structures |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107708164A (en) * | 2017-10-31 | 2018-02-16 | 中国南方电网有限责任公司电网技术研究中心 | The method for network access and system of distribution terminal |
| CN110121124A (en) * | 2019-05-10 | 2019-08-13 | 江西山水光电科技股份有限公司 | DCN loop prevention method is zoomed out in a kind of PON polymerization |
| CN111131023A (en) * | 2018-11-01 | 2020-05-08 | ***通信集团广东有限公司 | Dual-route networking topology and application method thereof |
| CN111314135A (en) * | 2020-02-17 | 2020-06-19 | 国家电网有限公司 | Power dispatching data network |
| CN113726629A (en) * | 2021-09-18 | 2021-11-30 | 清远电力规划设计院有限公司 | Wireless looped network communication device and system |
| CN113810796A (en) * | 2021-08-02 | 2021-12-17 | 国网浙江宁波市鄞州区供电有限公司 | Novel network networking architecture of power distribution network and planning method thereof |
-
2017
- 2017-02-14 CN CN201720129924.0U patent/CN206559565U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107708164A (en) * | 2017-10-31 | 2018-02-16 | 中国南方电网有限责任公司电网技术研究中心 | The method for network access and system of distribution terminal |
| CN111131023A (en) * | 2018-11-01 | 2020-05-08 | ***通信集团广东有限公司 | Dual-route networking topology and application method thereof |
| CN110121124A (en) * | 2019-05-10 | 2019-08-13 | 江西山水光电科技股份有限公司 | DCN loop prevention method is zoomed out in a kind of PON polymerization |
| CN110121124B (en) * | 2019-05-10 | 2021-11-19 | 江西山水光电科技股份有限公司 | PON aggregation remote DCN ring prevention method |
| CN111314135A (en) * | 2020-02-17 | 2020-06-19 | 国家电网有限公司 | Power dispatching data network |
| CN113810796A (en) * | 2021-08-02 | 2021-12-17 | 国网浙江宁波市鄞州区供电有限公司 | Novel network networking architecture of power distribution network and planning method thereof |
| CN113726629A (en) * | 2021-09-18 | 2021-11-30 | 清远电力规划设计院有限公司 | Wireless looped network communication device and system |
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