CN110838962B - Marine network system and marine system - Google Patents
Marine network system and marine system Download PDFInfo
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- CN110838962B CN110838962B CN201911132986.7A CN201911132986A CN110838962B CN 110838962 B CN110838962 B CN 110838962B CN 201911132986 A CN201911132986 A CN 201911132986A CN 110838962 B CN110838962 B CN 110838962B
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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]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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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]
- H04L12/42—Loop networks
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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]
- H04L12/44—Star or tree networks
Abstract
The invention provides a ship network system and a ship system, and relates to the technical field of network systems, wherein the ship network system comprises a first core switch, a second core switch and at least two aggregation switches, wherein each aggregation switch is connected with a plurality of gateways; the first core switch is connected with the second core switch; the first core switch and the at least two aggregation switches are sequentially connected to form a first ring network; the second core switch is also connected with each gateway to form a first star network; the first core switch and the second core switch are communicated with an external server, and when the marine network system operates, the first ring-type network is used for acquiring state information of the gateway and transmitting the state information to the external server; the first star network is used for transmitting an upper application control instruction issued by an external server; by combining the star network and the ring network, the overall reliability of the network is improved, the network transmission delay is reduced, and the use experience of users is improved.
Description
Technical Field
The invention relates to the technical field of network systems, in particular to a marine network system and a marine system.
Background
With the continuous development of network technology, ethernet is widely used as the most common communication protocol standard of the existing local area network.
At present, the conventional ethernet network structure comprises three network structures of a bus type, a star type and a ring type, and the three ethernet network structures are difficult to simultaneously meet the requirements of low transmission delay and high overall network reliability, so that the user experience is reduced.
Disclosure of Invention
In view of the above, the present invention provides a marine network system and a marine system, so as to alleviate the above technical problems.
In a first aspect, an embodiment of the present invention provides a marine network system, where the marine network system includes: the system comprises a first core switch, a second core switch and at least two aggregation switches, wherein each aggregation switch is connected with a plurality of gateways; wherein the first core switch is connected with the second core switch; the first core switch and the at least two aggregation switches are sequentially connected to form a first ring network; the second core switch is also connected with each gateway to form a first star network; the first core switch and the second core switch are communicated with an external server, and when the marine network system operates, the first ring-type network is used for acquiring state information of the gateway and transmitting the state information to the external server; the first star network is used for transmitting an upper layer application control instruction issued by an external server.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the first ring network is redundant links, and when the marine network system operates, one of the redundant links is in a blocking state.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where when the number of aggregation switches is at least three, the first core switch further configures a spare transmission link with all aggregation switches that are not adjacent to the first core switch; wherein the backup transport link is in a blocking state when the second core switch is operating.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the first ring network and the first star network form a combined network of a marine network system; the marine network system further includes a redundant network of a combined network; the redundant network comprises a third core switch, a fourth core switch and at least two standby aggregation switches; each standby aggregation switch is also connected with the gateway; the third core switch and the fourth core switch are connected and are communicated with an external server; the third core switch and at least two standby aggregation switches are sequentially connected to form a second ring network; the fourth core switch is also connected with each gateway to form a second star network; the redundant network is a standby network so as to be started when the combined network is abnormal.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the second ring network is a redundant link.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where a backup transmission link is further configured between the third core switch and one of the backup aggregation switches.
With reference to the foregoing possible implementation manner, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where a protocol deployed in the redundant link is a spanning tree protocol.
In a second aspect, an embodiment of the present invention further provides a ship system, where the ship system is configured with the above-mentioned ship network system.
With reference to the second aspect, an embodiment of the present invention provides a first possible implementation manner of the second aspect, where the ship system further includes an external server, and the external server is in communication with a core switch of the ship network system.
With reference to the first possible implementation manner of the second aspect, an embodiment of the present invention provides a second possible implementation manner of the second aspect, where the external server includes a plurality of server modules, and each server module communicates with the core switch to form a redundant server.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a ship network system and a ship system, wherein the ship network system comprises a first core switch, a second core switch and at least two aggregation switches, and each aggregation switch is connected with a plurality of gateways; wherein the first core switch is connected with the second core switch; the first core switch and the at least two aggregation switches are sequentially connected to form a first ring network; the second core switch is also connected with each gateway to form a first star network; the first core switch and the second core switch are communicated with an external server, and when the marine network system operates, the first ring-type network is used for acquiring state information of the gateway and transmitting the state information to the external server; the first star network is used for transmitting an upper application control instruction issued by an external server; by combining the star network and the ring network, the overall reliability of the network is improved, the network transmission delay is reduced, and the use experience of users is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a star network topology;
FIG. 2 is a schematic diagram of a bus-type network topology;
FIG. 3 is a schematic diagram of a ring network topology;
fig. 4 is a schematic structural diagram of a network system for a ship according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another marine network system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another marine network system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a marine system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another ship system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
At present, ethernet is the most common communication protocol standard of the existing local area network, and implements network communication by using a carrier frame listen multiple access mechanism with collision detection, the common ethernet network structure includes three network topologies of bus type, star type and ring type, for easy understanding, fig. 1 shows a schematic structural diagram of a star network topology, as shown in fig. 1, the star network topology includes a core switch, three aggregation switches and three gateways connected to each aggregation switch for illustration, in practical use, the three aggregation switches are further connected to the core switch, as can be seen from fig. 1, each network node is connected to a central node through a unique link, when peripheral nodes fail, communication of other switches in the network is not affected, and any 2-point communication path of the star structure is shortest, direct connection is achieved, and communication delay is short, however, if the core switch is down, the whole network will be broken down, and in order to improve the network redundancy, a dual-switch redundancy configuration scheme is usually adopted.
Further, fig. 2 shows a schematic structural diagram of a bus-type network topology, as shown in fig. 2, the bus-type network topology includes two core switches, three aggregation switches, and three gateways connected to each aggregation switch for illustration, in practical use, the core switches and the aggregation switches are all connected by one transmission bus, as can be seen from fig. 2, communication between different network nodes is bidirectionally propagated along the transmission bus, although the topology is simple and easy to expand, all data needs to be transmitted by the transmission bus, when there are many broadcast data packets or bandwidth is insufficient in the network, communication delay is large, and network reliability is also low.
In practical use, fig. 3 shows a schematic structural diagram of a ring network topology, as shown in fig. 3, in order to illustrate that the bus network topology includes a core switch, three aggregation switches, and three gateways connected to each aggregation switch, the aggregation switches and the aggregation switches in the network form a closed ring in an end-to-end connection manner to form a ring structure, and data transmits information from one network node to another network node in the ring. The ring topology has the advantages that at least two communication links among the network nodes do not affect the whole network communication when a single point of failure occurs, the reliability is relatively high, but the transmission delay is large because the transmitted data is continuously transferred from one node to another node.
For ease of understanding, table 1 shows a network fabric performance comparison;
TABLE 1
Table 1 shows the comparison of the performance of the bus type, star type and ring type network structures in terms of reliability, network delay and cost, and it can be known from table 1 that the three ethernet network structures cannot simultaneously satisfy the requirements of low transmission delay and high overall network reliability.
At present, the intelligent ship commonly uses the three network structures for information communication, but along with the development of the intelligent ship, the three network structures cannot meet the communication requirement, so that the user experience is reduced. Based on this, the ship network system and the ship system provided by the embodiment of the invention can alleviate the technical problems.
To facilitate understanding of the embodiment, a detailed description will be given to a marine network system disclosed in the embodiment of the present invention.
The first embodiment is as follows:
an embodiment of the present invention provides a marine network system, such as a schematic structural diagram of a marine network system shown in fig. 4, where the marine network system includes: a first core switch 100, a second core switch 101, and at least two aggregation switches 102, each aggregation switch connected to a plurality of gateways 103; for ease of illustration, only two aggregation switches and three gateways connected to each aggregation switch are shown in fig. 4 for illustration purposes, where a first core switch and a second core switch are connected; the first core switch and the at least two aggregation switches are sequentially connected to form a first ring network; the second core switch is also connected with each gateway to form a first star network.
Specifically, the first core switch and the second core switch are both communicated with an external server, and when the marine network system operates, the first ring-type network is used for acquiring state information of a gateway and transmitting the state information to the external server; the first star network is used for transmitting an upper layer application control instruction issued by an external server.
In the specific implementation, the first ring network is mainly responsible for collecting the state information of the equipment connected with the gateway and transmitting the collected state information to the external server, and the first star network is mainly responsible for an upper application control instruction of the control equipment state sent by the external server; and when the second core switch is abnormal, the first core switch transmits the control instruction to the corresponding intelligent gateway through the standby transmission link respectively.
The embodiment of the invention provides a ship network system, which comprises a first core switch, a second core switch and at least two aggregation switches, wherein each aggregation switch is connected with a plurality of gateways; wherein the first core switch is connected with the second core switch; the first core switch and the at least two aggregation switches are sequentially connected to form a first ring network; the second core switch is also connected with each gateway to form a first star network; the first core switch and the second core switch are communicated with an external server, and when the marine network system operates, the first ring-type network is used for acquiring state information of the gateway and transmitting the state information to the external server; the first star network is used for transmitting an upper application control instruction issued by an external server; by combining the star network and the ring network, the overall reliability of the network is improved, the network transmission delay is reduced, and the use experience of users is improved.
Further, the first ring network is a redundant link, and when the marine network system operates, one of the redundant links is in a blocking state.
Specifically, for convenience of illustration, fig. 5 shows a schematic structural diagram of another marine network system, as shown in fig. 5, a first core switch 100 is connected to a second core switch 101, the two core switches are respectively connected to an external server 500 and an external server 501, and the two external servers are also in communication connection; the first core switch 100 is connected to three aggregation switches 102, each aggregation switch being connected to three gateways 103, the aggregation switches being connected to the gateways by solid lines in fig. 5; the second core switch is also directly connected to each gateway, with the second core switch and gateway being connected by dotted lines in fig. 5.
Specifically, there are 2 transmission links in the first ring network formed by connecting the first core switch 100 and the three aggregation switches 102, which are respectively a 0 ring and a 1 ring, as shown in fig. 5, where a closed solid line indicated by a clockwise arrow is a 0 ring, and a virtual solid line indicated by a counterclockwise arrow is a 1 ring, the 2 transmission links are redundant links, and a spanning tree protocol is deployed in the redundant links, and in actual use, only 1 transmission link is enabled in the 2 transmission links, and the other transmission link is set in a blocking state, thereby avoiding the generation of a network loop.
In practical use, when the number of the aggregation switches is at least three, the first core switch and all aggregation switches which are not adjacent to the first core switch are configured with standby transmission links; wherein the backup transport link is in a blocking state when the second core switch is operating. In specific application, if only two aggregation switches exist in a network, the two aggregation switches are directly connected with the first core switch, so that the standby transmission link does not exist; if there are more than two aggregation switches in the network, aggregation switches that are not directly connected to the first core switch are connected to each other through a backup transmission link, for convenience of understanding, as shown in fig. 5, because an aggregation switch located in the middle of three aggregation switches is not directly connected to the first core switch, that is, the first switch is not adjacent to the middle aggregation switch, in this embodiment, the first core switch and the aggregation switch may be connected through the backup transmission link.
Specifically, to further clarify the protection mechanism of the combined network topology, in this embodiment, network failure analysis is performed under the condition of single point failure of different networks, for example, when a failure occurs in ring 0, data can be transmitted through ring 1; when the 1 ring fails, data can be transmitted through the 0 ring; when the connection between any gateway and the aggregation switch fails, the gateway can transmit data with an external server through a second core switch; similarly, when any aggregation switch fails, each gateway can perform data transmission with an external server through a second core switch; when the connection between any gateway and the second core switch fails or the second core switch fails, the network can perform data transmission through the first ring network.
In general, a combination type network of a marine network system formed by the first ring network and the first star network can only cope with a single point fault, and cannot cope with a multi-point fault, and therefore, in the present embodiment, the marine network system further includes a redundant network of the combination type network; the redundant network comprises a third core switch, a fourth core switch and at least two standby aggregation switches; each standby aggregation switch is also connected with the gateway; the third core switch and the fourth core switch are connected and are communicated with an external server; the third core switch and at least two standby aggregation switches are sequentially connected to form a second ring network; the fourth core switch is also connected with each gateway to form a second star network; the redundant network is a standby network so as to be started when the combined network is abnormal.
In specific use, fig. 6 shows a schematic structural diagram of another marine network system, as shown in fig. 6, a first core switch 100 is connected to a second core switch 101, two core switches are respectively connected to an external server 500, the first core switch 100 is connected to three aggregation switches 102, each aggregation switch is connected to three gateways 103, the second core switch is also directly connected to each gateway, and the network nodes are connected to form a combined network a.
Further, as shown in fig. 6, a third core switch 600 and a fourth core switch 601 are connected, and the third core switch and the fourth core switch are respectively connected with an external server 501, and an external server 500 and the external server 501 are communicatively connected, as shown in fig. 6, to illustrate with three standby aggregation switches 602, the third core switch 600 and the three standby aggregation switches 602 are connected to form a second ring network, each standby aggregation switch is connected to a gateway 103 connected to the aggregation switch, similarly, each standby aggregation switch is connected to three gateways, and the fourth core switch is also directly connected to each gateway to form a second star network, and the network nodes are connected to form a redundant network B.
When the combined network A breaks down, the redundant network B can be switched seamlessly to continue to transmit data; for example, when any aggregation switch in the combined network a and any gateway connected to the second core switch fail at the same time, data transmission can continue through the redundant network B, and the dual-network redundant topology can achieve fast switching between networks and greatly reduce transmission delay on the one hand, and on the other hand, has a certain redundancy capability under the condition of multi-point failure, and greatly improves reliability.
Similarly, there are 2 transmission links in the second ring network formed by connecting the third core switch 600 and the three standby aggregation switches 602, which are respectively a 0 ring and a 1 ring, as shown in fig. 6, wherein a closed solid line indicated by a clockwise arrow is a 0 ring, and a dashed solid line indicated by a counterclockwise arrow is a 1 ring, the 2 transmission links are redundant links, and a spanning tree protocol is deployed in the redundant links, and in actual use, only 1 transmission link of the 2 transmission links is enabled, and the other transmission link is set to be in a blocking state, so that generation of a network loop is avoided.
In actual use, the third core switch is also configured with a backup transmission link with one of the backup aggregation switches.
In particular, for convenience of understanding, a standby aggregation switch located in the middle of the three standby aggregation switches in fig. 6 may be set as a main standby aggregation switch, the third core switch is connected to the main standby aggregation switch through a standby transmission link, and when the fourth core switch is abnormal, the third core switch transmits a control instruction to the corresponding intelligent gateway through the standby transmission link, so that the reliability of transmission of the control instruction is improved.
Example two:
an embodiment of the present invention further provides a ship system, such as the structural schematic diagram of a ship system shown in fig. 7, and as shown in fig. 7, the ship system 700 is configured with the above-mentioned marine network system 701.
Further, fig. 8 shows a schematic structural diagram of another ship system, and as shown in fig. 8, the ship system further includes an external server 800, and the external server is in communication with the core switch 801 of the ship network system.
Further, the external server includes a plurality of server modules, each of which communicates with the core switch to form a redundant server.
The ship system provided by the embodiment of the invention has the same technical characteristics as the ship network system provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the following embodiments are merely illustrative of the present invention, and not restrictive, and the scope of the present invention is not limited thereto: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A marine network system, comprising: the system comprises a first core switch, a second core switch and at least two aggregation switches, wherein each aggregation switch is connected with a plurality of gateways;
wherein the first core switch and the second core switch are connected;
the first core switch and the at least two aggregation switches are sequentially connected to form a first ring-shaped network;
the second core switch is also connected with each gateway to form a first star network;
the first core switch and the second core switch are both communicated with an external server, and when the marine network system operates, the first ring network is used for acquiring state information of the gateway and transmitting the state information to the external server; and the first star network is used for transmitting an upper layer application control instruction issued by the external server.
2. The marine network system of claim 1, wherein the first ring network is redundant links, one of which is in a blocking state when the marine network system is operating.
3. The marine network system of claim 1, wherein when the number of the aggregation switches is at least three, the first core switch is further configured with backup transmission links with all the aggregation switches that are not adjacent to the first core switch;
wherein the backup transport link is in a blocking state when the second core switch is operational.
4. The marine network system according to claim 1, wherein the first ring network and the first star network constitute a combined network of the marine network system;
the marine network system further includes a redundant network of the combined network;
the redundant network comprises a third core switch, a fourth core switch and at least two standby aggregation switches; each standby aggregation switch is also connected with the gateway;
wherein the third core switch and the fourth core switch are connected, and both the third core switch and the fourth core switch communicate with the external server;
the third core switch and at least two standby aggregation switches are sequentially connected to form a second ring-type network;
the fourth core switch is also connected with each gateway to form a second star network;
wherein the redundant network is a standby network to facilitate enabling the redundant network when the combinational network is abnormal.
5. The marine network system of claim 4, wherein the second ring network is a redundant link.
6. The marine network system of claim 4, wherein a backup transport link is further configured between the third core switch and one of the backup aggregation switches.
7. The marine network system of claim 2 or 5, wherein the protocol deployed in the redundant link is a spanning tree protocol.
8. A marine system, characterized in that the marine system is provided with the marine network system according to any one of claims 1 to 7.
9. The marine system of claim 8, further comprising an external server in communication with a core switch of the marine network system.
10. The marine system of claim 9 wherein said external server comprises a plurality of server modules, each of said server modules communicating with said core switch to form a redundant server.
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| CN112887183A (en) * | 2021-03-12 | 2021-06-01 | 刘昌宏 | Experimental method and device for establishing Ethernet based on industrial star-shaped architecture |
| CN113014467B (en) * | 2021-04-23 | 2022-07-12 | 煤炭科学研究总院有限公司 | Coal mine working face support group data transmission network |
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