CN115189988A - Communication networking system based on power distribution network - Google Patents
Communication networking system based on power distribution network Download PDFInfo
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- CN115189988A CN115189988A CN202210816236.7A CN202210816236A CN115189988A CN 115189988 A CN115189988 A CN 115189988A CN 202210816236 A CN202210816236 A CN 202210816236A CN 115189988 A CN115189988 A CN 115189988A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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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
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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Abstract
The application discloses communication networking system based on distribution network includes: the system comprises a convergence layer transformer substation and an access layer power distribution room, wherein the convergence layer transformer substation comprises a first transformer substation and a second transformer substation; the access layer ring network comprises a head distribution room, a tail distribution room and a middle node distribution room; a head distribution room in the access layer ring network is connected with a first transformer substation, and a tail distribution room is connected with a second transformer substation; a VRRP protocol is configured in a switch of the convergence layer transformer substation and used for generating a virtual gateway; an MSTP protocol is configured in a switch of the access layer power distribution room and used for providing service guarantee and balancing flow. The method and the device solve the technical problem that the stability and the expansibility of the network are influenced due to the fact that the existing networking scheme can cause spanning tree domain expansion and network oscillation.
Description
Technical Field
The application relates to the technical field of networking, in particular to a communication networking system based on a power distribution network.
Background
And the power distribution data service is accessed to the network through the switch of the access layer of the power distribution room and is transmitted to the service gateway of the transformer substation of the convergence layer. A typical networking structure of a distribution network optical fiber data network generally adopts a networking structure of dual substation uplink, as shown in fig. 2. The two three-layer switches of the transformer substation are used as service gateways, the transformer substation A is used as a main gateway to undertake processing and forwarding of outbound services, the transformer substation B is used as a standby gateway and is in an idle state in daily life, and when the switch of the transformer substation A fails, the transformer substation B is switched to the main gateway to undertake processing and forwarding of the outbound services. Meanwhile, in order to prevent the broadcast storm caused by the ring network, the STP protocol is started on all the exchangers; the networking scheme is approximately similar to a primary line networking mode, has certain redundancy and is widely applied to a distribution network optical fiber data network.
However, the STP protocol is started on the three-layer switch of the transformer substation in the networking scheme, which causes the expansion of the spanning tree domain and affects the stability of the convergence layer network; and network oscillation of the access layer may cause an anomaly of the convergence layer switch and its interconnection link. Particularly, in the networking process of a large network, originally separated access layer networks may cross-span through a convergence layer switch, resulting in superposition and expansion of a spanning tree domain, and seriously affecting the reliability and expansibility of the network.
Disclosure of Invention
The application provides a communication networking system based on a power distribution network, which is used for solving the technical problems that the existing networking scheme can cause spanning tree domain expansion and network oscillation, so that the network stability and expansibility are influenced.
In view of this, the first aspect of the present application provides a communication networking system based on a power distribution network, including: the system comprises a convergence layer transformer substation and an access layer power distribution room, wherein the convergence layer transformer substation comprises a first transformer substation and a second transformer substation;
the access layer power distribution rooms are in communication connection to form an access layer ring network, and the access layer ring network comprises a head power distribution room, a tail power distribution room and a middle node power distribution room;
the head distribution room in the access layer ring network is connected with the first transformer substation, and the tail distribution room is connected with the second transformer substation;
a VRRP protocol is configured in a switch of the convergence layer transformer substation and used for generating a virtual gateway;
and an MSTP protocol is configured in a switch of the access layer power distribution room and is used for providing service guarantee and balancing flow.
Optionally, the switch of the convergence layer substation does not need to start the STP protocol.
Optionally, the first substation and the second substation are respectively in communication connection with a backbone network;
and the backbone network is in communication connection with the service master station.
Optionally, the switch of the access layer power distribution room establishes association between a preset instance and a preset service VLAN through the MSTP protocol.
According to the technical scheme, the embodiment of the application has the following advantages:
in this application, a communication networking system based on distribution network is provided, include: the system comprises a convergence layer transformer substation and an access layer power distribution room, wherein the convergence layer transformer substation comprises a first transformer substation and a second transformer substation; the access layer ring network comprises a head distribution room, a tail distribution room and a middle node distribution room; the head distribution room in the access layer ring network is connected with the first transformer substation, and the tail distribution room is connected with the second transformer substation; a VRRP protocol is configured in a switch of the convergence layer transformer substation and used for generating a virtual gateway; and an MSTP protocol is configured in a switch of the access layer power distribution room and is used for providing service guarantee and balancing flow.
According to the communication networking system based on the power distribution network, the head distribution room and the tail distribution room of the access layer are connected together, and dependence on a transformer substation of the convergence layer is avoided to a certain extent; then, the configuration of the main gateway and the standby gateway is realized by matching with a protocol configured by a convergence layer and an access layer; the spanning tree domain is terminated in a power distribution room of the access layer, so that the complete division of the logic functions of the convergence layer and the access layer is realized, the influence caused by the expansion of the spanning tree domain is avoided, and the stability of network operation is ensured. Therefore, the method and the device can solve the technical problem that the stability and the expansibility of the network are influenced due to the fact that the spanning tree domain is expanded and the network is vibrated by the conventional networking scheme.
Drawings
Fig. 1 is a schematic structural diagram of a communication networking system based on a power distribution network according to an embodiment of the present application;
fig. 2 is a schematic network structure diagram of an existing networking scheme provided in an embodiment of the present application;
fig. 3 is a schematic diagram of a spanning tree domain expansion principle network structure of an existing networking scheme according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Interpretation of terms:
the three-layer switch is a network layer switch and mainly processes network layer data packets and related network layer protocols.
The two-layer switch, which is a data link layer switch, mainly processes data frames of a data link layer and related data link layer protocols.
The Spanning Tree Protocol (STP) is a data link layer Protocol, and is mainly used to prevent broadcast storm caused by redundant links and automatically prune a ring network into a Tree network.
A Virtual Router Redundancy Protocol (VRRP) is mainly used to solve network interruption caused by failure of a single gateway in a local area network, and can virtualize a plurality of physical gateways with different network addresses into one same Virtual gateway.
Virtual Local Area Networks (VLANs) can establish a Virtual network working group according to communication requirements without being limited by factors such as geographical locations.
The distribution network optical fiber data network physically adopts optical fibers as transmission media and is structurally divided into a convergence layer and an access layer on a network, wherein the convergence layer is generally deployed in a transformer substation, a three-layer switch is adopted, the access layer is generally deployed in a power distribution room, and an industrial Ethernet two-layer switch is adopted.
The existing networking scheme is as shown in fig. 3, an access stratum subring 1 and an access stratum subring 2 are crossed in a transformer substation B, and the spanning tree domain is expanded. Because the spanning tree technology has the limitation of maximum hop count, the expansion of the spanning tree domain seriously affects the stability of the network and is not beneficial to the expansion construction of the network. Therefore, the application provides a communication networking system based on a power distribution network, which is used for solving the technical problem.
For easy understanding, please refer to fig. 1, an embodiment of a communication networking system based on a power distribution network provided in the present application includes: the transformer substation comprises a convergence layer transformer substation and an access layer power distribution room D, wherein the convergence layer transformer substation comprises a first transformer substation A and a second transformer substation B.
The access layer power distribution rooms D are in communication connection to form an access layer ring network, and the access layer ring network comprises a head power distribution room, a tail power distribution room and a middle node power distribution room; as can be seen from the example in fig. 1, the distribution rooms D1, D2, D3, D4, D5, and D6 are strung to form a ring network structure, wherein a link between the head distribution room D1 and the tail distribution room D6 belongs to an added link, and the two-layer switches of the distribution rooms at the access layer are strung to form a loop and then connected to the aggregation layer.
The head part of the access layer ring network is connected with a first transformer substation, and the tail part of the access layer ring network is connected with a second transformer substation. After forming a loop, the two-layer switches of the power distribution room are connected to the three-layer switches of the transformer substation through the power distribution rooms from head to tail respectively to form a network structure shaped like a Chinese character 'ri'. When the network is simplified, the interconnection among the substations can be further cancelled, namely, links among the substations can be removed.
In addition, a link between the head distribution room D1 and the tail distribution room D6 can be a direct connection optical cable, a transformer substation transmission network Ethernet special line channel or an inter-transformer station electric power special optical cable can be adopted, and the opening and bearing of a newly added interconnection channel are completed by combining optical cable jumping between the distribution rooms and the transformer substations.
The switches of the convergence layer substation are configured with a VRRP protocol for generating virtual gateways, which are generally respectively borne by two convergence layer substation switches, i.e., substations a and B in fig. 1. As a further step, the switch of the convergence layer substation does not need to start the STP protocol, that is, the switch of the convergence layer substation may disable the relevant data link layer protocol, and primarily enable the network layer protocol, thereby achieving logical separation of network layers and functions. In the embodiment, the VRRP protocol is mainly started, the STP protocol is stopped, and the heartbeat information and the service information of the VRRP protocol of the three-layer switch of the transformer substation are transmitted through the access layer ring network formed by the power distribution room.
It will be appreciated that virtual gateway redundancy may be implemented using VRRP technology. The heartbeat information of the VRRP protocol is transmitted by a ring network formed by the switch of the access layer of the power distribution room, so that the standby gateway can monitor and automatically switch the main gateway.
An MSTP protocol is configured in a switch of the access layer power distribution room and used for guaranteeing service reliability and balancing flow. In order to prevent the broadcast storm from generating in the ring network, the MSTP mode of STP protocol is started on all the switches of the power distribution room, the ring network of the access layer is generated into a tree network, and the standby redundant port and the link are automatically started under the condition that the switches or the links have faults. The MSTP master and slave roots are arranged in a first power distribution room of the transformer substation lower link and correspond to the master and slave gateways of the VRRP, namely the MSTP master and slave roots are arranged in a first power distribution room access layer switch of the transformer substation switch lower link where the gateways are located. For example, when the primary gateway is in the substation a, the primary root of MSTP is set in the first power distribution room D1 of the substation a, and the backup root is set in the first power distribution room D6 of the substation B.
Further, the switch of the access layer power distribution room associates the preset instance with the preset traffic VLAN through the MSTP protocol. The switch of the power distribution room realizes the logic isolation of different services through the VLAN, and in order to realize the load burden of different services, the MSTP protocol is adopted to establish the association, and the different service flows are sent out through different substations by matching the setting of the VRRP master-slave gateway and the setting of the master-slave root of the corresponding spanning tree instance, so that the service flows pass through different loads, the purpose of flow balance is achieved, and the optimal configuration of network resources is realized.
For example, for two different service flows a and B, VRRP and MSTP configuration may be performed according to table 1, so that service flow a is sent through substation a daily, and service flow B is sent through substation B daily, thereby realizing load balancing of service flows on the switch and the network.
Table 1 service flow up-sending node example table
| Name of service | Main gateway | Standby gateway | Spanning tree main root | Root preparation of spanning tree |
| Traffic flow a | Transformer substation A | Transformer substation B | Power distribution room D1 | Distribution room D2 |
| Traffic flow b | Transformer substation B | Transformer substation A | Distribution room D2 | Power distribution room D1 |
Further, the first transformer substation and the second transformer substation are respectively in communication connection with the backbone network;
the backbone network is in communication connection with the service master station.
And the switch of the convergence layer forwards the service flow to the service master station through the service gateway for related processing.
Based on the networking system, the operation mode of the power distribution network in a fault state is as follows:
1) If the fault link is on the main link, the spanning tree of the corresponding instance in the MSTP domain is converged again, the standby port and the redundant link are opened, the service data and the VRRP heartbeat information are transmitted through the standby link, and the states of the main gateway and the standby gateway of the VRRP are unchanged. If the fault link is on the standby link, the spanning tree state of the corresponding instance in the MSTP domain is unchanged, and the states of the main gateway and the standby gateway of the VRRP are unchanged.
2) If the switch of the non-head-tail distribution room fails, if the failed switch is on the main link, the spanning tree of the corresponding instance in the MSTP domain is converged again, the standby port and the redundant link are opened, the service data and the VRRP heartbeat information are transmitted through the standby link, and the states of the main gateway and the standby gateway of the VRRP are unchanged. If the fault switch is on the standby link, the spanning tree state of the corresponding instance in the MSTP domain is unchanged, the states of the main gateway and the standby gateway of the VRRP are unchanged, and the data flow direction is unchanged.
3) And the interconnection link of the transformer substation and the power distribution room is interrupted, the corresponding downlink interface state of the transformer substation is DOWN, the VRRP protocol state is invalid, and no VRRP heartbeat information is sent. If the interrupted transformer substation is a standby gateway, the state of the primary gateway of the VRRP is unchanged, and the standby gateway fails; if the interrupted transformer substation is the main gateway, the standby gateway automatically switches to the main gateway after time out due to the fact that the standby gateway cannot receive VRRP heartbeat information of the original main gateway at the opposite end, and forwarding of all outbound service data is borne. Under the condition, because the ring network structure of the two-layer switch of the power distribution room is unchanged, the re-convergence of the MSTP cannot be triggered, and the port state of each switch of the access layer is unchanged.
4) The transformer substation aggregation switch failure is similar to the failure situation of 3): when the fault transformer substation is a main gateway, the VRRP main gateway of the convergence layer fails, the standby gateway is switched to the main gateway, and the MSTP state of the access layer is unchanged; when the fault transformer substation is a standby gateway, the VRRP main gateway of the convergence layer is unchanged, the standby gateway is invalid, and the MSTP state of the access layer is unchanged.
5) The switch of the head-to-tail power distribution room has a fault: and (3) the end-to-end power distribution room fault causes the interconnection link of the corresponding transformer substation and the power distribution room to be interrupted, and the VRRP state of the convergence layer is influenced similarly to the step (3). When the fault power distribution room is the MSTP main root, the access layer MSTP domain is converged again, and the VRRP state of the convergence layer is switched; when the fault power distribution room is MSTP standby root, the MSTP state of the access layer is unchanged, and the VRRP state of the convergence layer is switched.
The networking scheme of this embodiment can effectively cope with various failure situations, and when the switch or link on the primary path fails, the switching of service data is automatically completed through the change of the VRRP or MSTP state, thereby ensuring the reliability of the network. When the switch or the link on the standby path fails, the service data flow is not affected, and the stability of the network is ensured. The convergence layer VRRP state and access layer MSTP state for each failure case are shown in table 2.
TABLE 2 VRRP status and MSTP status under different failure conditions
According to the communication networking system based on the power distribution network, the head part power distribution room and the tail part power distribution room of the access layer are connected together, and dependence on a transformer substation of the convergence layer is avoided to a certain extent; then, the configuration of the main gateway and the standby gateway is realized by matching with the protocol configured by the convergence layer and the access layer; the spanning tree domain is terminated in a power distribution room of the access layer, so that the complete division of the logic functions of the convergence layer and the access layer is realized, the influence caused by the expansion of the spanning tree domain is avoided, and the stability of network operation is ensured. Therefore, the embodiment of the application can solve the technical problem that the existing networking scheme can cause spanning tree domain expansion and network oscillation, thereby influencing network stability and expansibility.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, or portions or all or portions of the technical solutions that contribute to the prior art, may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for executing all or part of the steps of the methods described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (4)
1. A communication networking system based on a power distribution network, comprising: the system comprises a convergence layer transformer substation and an access layer power distribution room, wherein the convergence layer transformer substation comprises a first transformer substation and a second transformer substation;
the access layer power distribution rooms are in communication connection to form an access layer ring network, and the access layer ring network comprises a head power distribution room, a tail power distribution room and a middle node power distribution room;
the head distribution room in the access layer ring network is connected with the first transformer substation, and the tail distribution room is connected with the second transformer substation;
a VRRP protocol is configured in a switch of the convergence layer transformer substation and used for generating a virtual gateway;
and an MSTP protocol is configured in a switch of the access layer power distribution room and is used for providing service guarantee and balancing flow.
2. The power distribution network-based communication networking system of claim 1, wherein the switches of the convergence layer substation do not require STP protocol to be started.
3. The power distribution network-based communication networking system of claim 1, wherein the first substation and the second substation are each communicatively connected to a backbone network;
and the backbone network is in communication connection with the service master station.
4. The power distribution network-based communications networking system of claim 1, wherein the switch of the access stratum power distribution room associates a preset instance with a preset traffic VLAN via the MSTP protocol.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116566479A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800774A (en) * | 2010-02-04 | 2010-08-11 | 中兴通讯股份有限公司 | Environmental-friendly accessing method and environmental-friendly accessing network |
| CN103441940A (en) * | 2013-08-29 | 2013-12-11 | 华为技术有限公司 | Method and device for switching network device from stand-by state to main state and network device |
| CN110798263A (en) * | 2019-10-16 | 2020-02-14 | 深圳供电局有限公司 | Intelligent power distribution network communication multidimensional networking structure |
| 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 |
-
2022
- 2022-07-12 CN CN202210816236.7A patent/CN115189988A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800774A (en) * | 2010-02-04 | 2010-08-11 | 中兴通讯股份有限公司 | Environmental-friendly accessing method and environmental-friendly accessing network |
| CN103441940A (en) * | 2013-08-29 | 2013-12-11 | 华为技术有限公司 | Method and device for switching network device from stand-by state to main state and network device |
| CN110798263A (en) * | 2019-10-16 | 2020-02-14 | 深圳供电局有限公司 | Intelligent power distribution network communication multidimensional networking structure |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116566479A (en) * | 2023-07-10 | 2023-08-08 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
| CN116566479B (en) * | 2023-07-10 | 2023-12-01 | 广东电网有限责任公司佛山供电局 | Data transmission system, method, equipment and medium of distribution line |
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