CN103533102A - Network element network address configuration method, data transmission system and audio/video system - Google Patents

Network element network address configuration method, data transmission system and audio/video system Download PDF

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Publication number
CN103533102A
CN103533102A CN201310513789.6A CN201310513789A CN103533102A CN 103533102 A CN103533102 A CN 103533102A CN 201310513789 A CN201310513789 A CN 201310513789A CN 103533102 A CN103533102 A CN 103533102A
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network
network element
address
server
audio
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CN103533102B (en
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李诗臻
王同平
谭伟雄
余贤沐
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Shenzhen city many Nica avionics Co., Ltd.
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SHENZHEN AVIATION ENGINEERING Co Ltd
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Abstract

The invention discloses a network element network address configuration method, a data transmission system and an audio/video system. The network element network address configuration method comprises steps as follows: (1), a server is connected with a plurality of network elements; (2), the connecting order of the network elements is set, the server defines a physical address and network address corresponding list for each installing position of the network elements; (3), the server sends network address configuration to each network element; and (4), the server forms a network topological graph according to the sequence of network address distribution of each network element, and combines with actual physical installing positions of network element components to finish the corresponding list. By means of the network element network address configuration method, the data transmission system and the audio/video system, automatch of the network addresses of the network elements with the actual physical positions is achieved, and real-time component monitoring and management can be performed; and automatic configuration of replacement of any network element component is guaranteed, and post-maintenance and management are facilitated. A data transmission system can be established quickly according to the method, and can be applied to an AVOD (audio and video on demand) on a transport means such as a plane, a ship, a train or a car and the like.

Description

The collocation method of the network element network address and the data transmission system audio-visual system of unifying
Technical field
The present invention relates to the method for a kind of distribution network address, more particularly refer to according to the method for the network element physical address assignments network address and the data transmission system audio-visual system of unifying.
Background technology
In prior art, each component network address assignment in AVOD system (being Audio and video on demand audio/video on-demand system) adopts the mode of DHCP distribution or fixed ip address, these two kinds of technical schemes all exist when configuration-system network is installed aboard, need the problem of a large amount of human configuration work.And if when certain parts damages, changing parts needs again to re-start configuration effort.
Also there is same problem in the data transmission system at other, the human configuration network address, by the automatic distribution network of DHCP address, they all need to carry out human configuration for each concrete system hardware, cannot automatically copy the layout of its system, increase workload, be unfavorable for networking installation and the maintenance in later stage of data transmission system.
Therefore, be necessary to develop a kind of more effective network address assignment method.
Summary of the invention
The object of the invention is to overcome the defect of prior art, the collocation method of a kind of network element network address is provided.
The present invention further provides a kind of data transmission system according to this collocation method distribution network address audio-visual system of unifying.
For achieving the above object, the present invention is by the following technical solutions:
The collocation method of the network element network address, comprises the following steps:
1) server is connected in mode star-like, ring-like or chain network topology with several network elements;
2) set the order of connection of network element, physical address numbering of each installation site definition that server is network element, and by the mode of carrying out network address distribution orderly to network element, generate the corresponding lists of physical address and the network address; Wherein, to network element orderly carry out network address distribution, it is a preset procedures, can to the network address of each network element, correspondingly set according to the requirement of networking, such as the installation site of network element is subregion segmentation, the network address matching with it also should subregion segmentation, so that the identification of group network system;
3) server sequentially sends network address configuration packet to each network element;
4) server, according to each network element successively order of distribution network address, forms network topological diagram, and combines with the actual physics installation site of network element parts, completes corresponding lists; This step is an implementation, by server, initiates the instruction of grid address configuration.
Its further technical scheme is: the debug process after the debug process that betides after first installation or arbitrary network element are replaced is distributed in the network address step 3) and 4); When request is distributed in each network address, record is installed on the network address of the network element of each physical address, and this network address and physical address are bound.
Its further technical scheme is: described network address configuration packet, according to stp spanning-tree protocol, carry out.
Its further technical scheme is: described network element comprises the one-level network elements that at least one or two that are connected with server are above and connect, the secondary unit being connected in series with one-level network element network interface, and with secondary network element network interface three grades of network elements connecing.
Its further technical scheme is: described secondary network element be connected to the connection being connected in series successively by network interface, its physical address is determined by serial connection sequence; The physical address of three grades of described network elements is determined by the network interface position being connected with secondary network element.
A data transmission system according to aforesaid method distribution network address, comprises server, and several network elements that are connected with server, and server is star-like connection or chain connection with the connected mode of network element.
Its further technical scheme is: described network element at least comprises an one-level network element, and the secondary network element being connected in series with one-level network element network interface; Described secondary network element is at least with three network interfaces, and network interfaces and output network interface are inputted in two conducts, and a network interface is used for connecting three grades of network elements.Described network element is the digital communication device with data communication and function of exchange.
A kind of according to the audio-visual system of preceding method distribution network address, comprise server, and several network elements that are connected with server, server is at least one, one-level network element is at least one, secondary network element is several, and three grades of network elements are several, and three grades of described network elements are that audio frequency and video are used terminal.
Its further technical scheme is: described server is one, and described one-level network element is two, and described secondary network element is several, and each secondary network element connects one to four three grades of network element.
Its further technical scheme is: described audio-visual system is the audio/video on-demand system for aircraft, and described one-level network element is network area distributor disk; Described secondary network element is seat Electronic Control Box; It is LCD terminal that described audio frequency and video are used terminal.
The present invention's beneficial effect is compared with prior art: the inventive method utilization is default networking layout in advance, for each network element sets fixing physical address (being physical connection position), by the orderly network address, configure, find the network element of each physical address, and be this network element network address that configuration presets automatically, when first installation or when maintenance upgrades, only need by primary network address configuration, can realize the orderly of the network address of network element parts and automatically distribute.Under any installation environment, all do not need the hardware information of each concrete network element manually read or configure, only need to carry out networking installation according to the layout of setting, carry out primary network address configuration, can be by the server of the hardware information input systems such as network interface card of each network element, and be its network address that configuration presets automatically.According to this method, can set up rapidly data transmission system (or being called data network), in this data network, the hardware annexation of each network element (being physical address) and the network address can be mated completely, make its can massive duplication in similar applied environment, such as the audio/video on-demand system on the vehicles such as aircraft, steamer, train or automobile.
The present invention has realized the network address of network element parts and the Auto-matching of its actual physical location, can carry out real-time parts monitoring and management; And the replacement that can guarantee any network element parts can configure automatically, be convenient to later maintenance and management.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the collocation method specific embodiment flow chart of the network element of the present invention network address;
Fig. 2 is the hardware connection diagram of data transmission system specific embodiment of the present invention;
Fig. 3 is the number order schematic diagram [(1) in figure, (2) etc. are serial number] of each network element in Fig. 2 embodiment;
Fig. 4 is the schematic diagram (SEB-1-2-2 in figure, LCD-1-2-2-1 are physical address numbering) of the physical address numbering of each network element in Fig. 2 embodiment.
Embodiment
In order to more fully understand technology contents of the present invention, below in conjunction with specific embodiment, technical scheme of the present invention is further introduced and explanation, but be not limited to this.
As shown in Figure 1, the collocation method of the network element of the present invention network address, comprises the following steps:
1) server is connected in mode star-like, ring-like or chain network topology with several network elements;
2) set the order of connection of network element, server is physical address numbering of each installation site definition of network element, and by the mode of carrying out network address distribution orderly to network element, the corresponding lists (mapping table that is called again physical address and the network address) of end product reason address and the network address;
3) server sequentially sends network address configuration packet to each network element.The configuration of this network address, according to stp spanning-tree protocol integrating step 2) the order of connection carry out;
4) server, according to each network element successively order of distribution network address, forms network topological diagram, and combines with the actual physics installation site of network element parts, completes corresponding lists; This assigning process can be moved by server, and the packet that also can be sent according to server by network element configures voluntarily;
Wherein, the debug process after the debug process that betides after first installation or arbitrary network element are replaced is distributed in the network address step 3) and 4); Timing is divided in each network address, and record is installed on the network address of the network element of each physical address, and this network address and physical address are bound.In service in the later stage, only identifies according to the network address of each network element, can carry out as the management of rights management or applied environment it; Such as the first-class cabin of aircraft adopts the different network addresss from economy class, make the two seat can there is the some multicast function of different audio frequency and video.Network element comprises the one-level network elements that at least one or two that are connected with server are above and connect, the secondary unit being connected in series with one-level network element network interface, and with secondary network element network interface three grades of network elements connecing.Secondary network element be connected to the connection being connected in series successively by network interface, its physical address is determined by serial connection sequence; The physical address of three grades of network elements is determined by the network interface position being connected with secondary network element.
A data transmission system of carrying out distribution network address according to aforesaid method, comprises server, and several network elements that are connected with server, and server is star-like connection or chain connection with the connected mode of network element.Network element at least comprises an one-level network element, and the secondary network element being connected in series with one-level network element network interface; Described secondary network element is at least with three network interfaces, and network interfaces and output network interface are inputted in two conducts, and a network interface is used for connecting three grades of network elements.Network element is the digital communication device with data communication and function of exchange.
The present invention can be applied to audio-visual system, and it comprises server, and several network elements that are connected with server, server is at least one, and one-level network element is at least one, and secondary network element is several, three grades of network elements are several, and three grades of network elements are that audio frequency and video are used terminal.
Such as the audio/video on-demand system being applied on aircraft, its server S ERVER is one, one-level network element is two (as according to the difference left and right sides, seat), secondary network element is several (such as the rows at seat), and each secondary network element connects one to four three grades of network element (amount of seats having according to each row).
Be below the inventive method for the embodiment of the AVOD system on aircraft (being audio/video on-demand system), wherein, one-level network element is network area distributor disk (ADB); Secondary network element is seat Electronic Control Box (SEB); It is LCD terminal that audio frequency and video are used terminal.The mode that Adoption Network address is automatically distributed is LCD terminal to SMARTLCD(), SEB(is seat Electronic Control Box), ADB(is network area distributor disk) the network address automatically distribute that (actual sets net means is not limited to above-mentioned parts, so long as possess the network element parts of network interface card), and mate with actual seat position or other installation sites, can carry out status poll and control and management to each network element parts.The distribution of the network address adopts STP agreement and matches from master agreement.
Assembling and layoutprocedure comprise the following steps:
1) first just provide the network address of server during systems organization, the network address of the ADB that each network interface of server connects, the seat position of the corresponding SMARTLCD connecting of each SEB network interface;
2) after system group network completes, in AVOD configuration interface, click automatically and distribute, from server end according to the connection of ADB and port, just can distribute the network address of appointment, and can confirm the installation site of ADB, the installation site of ADB is determined by LOPA (being aircraft seat configuration picture) and the system mounting design figure of aircraft model;
3) physical positioning of SEB adopts the mode of location step by step, under normal circumstances, adopts and first locates from the position of the nearest one-level SEB of ADB, and communication protocol adopts the privately owned 2 layers of switching network agreement of DONICA.First configure 1 grade of SEB, this protocol package is sent by server, because ADB positional information can obtain, so can confirm the position (SEB-1-1) of this 1 grade of SEB when receiving configuration protocol, after the location confirmation of 1 grade of SEB, this grade of SEB open configuration protocol package forwarding capability, opens subordinate's configuration feature, the like, the configuration SEB of subordinate; As shown in Figure 3;
4) SmartLCD is connected on specific SEB network interface, after being connected to the SEB location positioning of SmartLCD, the configuration protocol that can open this SEB sends, and the SmartLCD that is connected to this SEB can start to receive configuration information, confirms the physical location of these parts according to port.According to mapping table (being corresponding lists), can obtain which LCD of several rows; As shown in Figure 4;
5) after the network address of each AVOD system unit is assigned, according to corresponding installation site information, just can be presented on the component management interface of cabin management terminal (CMT) of AVOD system, interface adopts the mode of seat distribution diagram intuitively to show mount message, equipment state and the network address assignment information of each network element parts.
Air-service personnel and attendant just can see by this administration interface the running status of each parts intuitively, and can carry out self check and location of mistake for certain parts.
ADB, SEB, SMARTLCD has the different acquiescences network address of dispatching from the factory.Work as parts damages, change after part, more automatically distribute and arrange to carry out network address distribution by this network, can realize the network address distribution of new parts and the correspondence configuration of physical address, carry out equipment control and monitoring.
The present embodiment is to take STP agreement as basic agreement, IPAM(IPAddress Management in conjunction with independent development) agreement, each network element address in local area network network automatically distributes and manages, and and the LOPA(of aircraft be aircraft seat configuration picture) and parts installation site combine, realize the coupling of component network address and physical location.
The implementation case solves in existing AVOD system, and difficulty is distributed in the network address of all parts, cannot be effectively and actual installation matching addresses, cause the difficulty of maintenance.Adopt after this technology, replace arbitrarily parts, equal distribution network addresses automatically, and assurance conforms to actual installation position.
Concrete structure is as shown in Fig. 2-Fig. 4, and in the SEB of each ADB network, afterbody is connected, and forms serial connection loop, plays redundancy effect.In other embodiment, its afterbody can be connected yet, do not form serial connection loop.
In other embodiment, each ADB(is one-level network element) can there are a plurality of network interfaces, to form one, enter to have more, enter more one to go out or enter more the SEB(having more be secondary network element) serial connection loop.
In other embodiment, the method can also not only can watch at scene spectators for performing in a radio or TV programme the multifunctional audio video Play System on the seat in hall, also can pass through video recording system, from different angles, watches on-the-spot floor show.
In sum, the inventive method utilization is default networking layout in advance, for each network element sets fixing physical address (being physical connection position), by the orderly network address, configure, find the network element of each physical address, and be this network element network address that configuration presets automatically, when first installation or when maintenance upgrades, only need by a physical address request, can realize the distribution automatically in order of the network address of network element parts.Under any installation environment, all do not need the hardware information of each concrete network element manually read or configure, only need to carry out networking installation according to the layout of setting, carry out primary network address configuration, can be by the server of the hardware information input systems such as network interface card of each network element, and be its network address that configuration presets automatically.According to this method, can set up rapidly data transmission system (or being called data network), in this data network, the hardware annexation of each network element (being physical address) and the network address can be mated completely, make its can massive duplication in similar applied environment, such as the audio/video on-demand system on the vehicles such as aircraft, steamer, train or automobile.
The present invention has realized the network address of network element parts and the Auto-matching of its actual physical location, can carry out real-time parts monitoring and management; And the replacement that can guarantee any network element parts can configure automatically, be convenient to later maintenance and management.
Above-mentionedly only with embodiment, further illustrate technology contents of the present invention, so that reader is easier to understand, but do not represent that embodiments of the present invention only limit to this, any technology of doing according to the present invention is extended or recreation, is all subject to protection of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims (10)

1. the collocation method of the network element network address, comprises the following steps:
1) server is connected in mode star-like, ring-like or chain network topology with several network elements;
2) set the order of connection of network element, physical address numbering of each installation site definition that server is network element, and by the mode of carrying out network address distribution orderly to network element, generate the corresponding lists of physical address and the network address;
3) server sequentially sends network address configuration packet to each network element;
4) server, according to each network element successively order of distribution network address, forms network topological diagram, and combines with the actual physics installation site of network element parts, completes corresponding lists.
2. according to the method for claim 1, it is characterized in that step 3) and 4) in the network address distribute the debug process after the debug process betide after first installation or arbitrary network element are replaced; When request is distributed in each network address, record is installed on the network address of the network element of each physical address, and this network address and physical address are bound.
3. method according to claim 1, is characterized in that described network address configuration packet, according to stp spanning-tree protocol, carries out.
4. method according to claim 1, is characterized in that described network element comprises at least one or two that are connected with server above and the one-level network elements that connect, the secondary unit being connected in series with one-level network element network interface, and with secondary network element network interface three grades of network elements connecing.
5. method according to claim 4, is characterized in that the connection that being connected to of described secondary network element is connected in series successively by network interface, and its physical address is determined by serial connection sequence; The physical address of three grades of described network elements is determined by the network interface position being connected with secondary network element.
6. a data transmission system for method distribution network according to claim 1 address, comprises server, and several network elements that are connected with server, and server is star-like connection or chain connection with the connected mode of network element.
7. data transmission system according to claim 6, is characterized in that described network element at least comprises an one-level network element, and the secondary network element being connected in series with one-level network element network interface; Described secondary network element is at least with three network interfaces, and network interfaces and output network interface are inputted in two conducts, and a network interface is used for connecting three grades of network elements; Described network element is the digital communication device with data communication and function of exchange.
8. the audio-visual system of a method distribution network according to claim 1 address, comprise server, and several network elements that are connected with server, server is at least one, one-level network element is at least one, secondary network element is several, and three grades of network elements are several, and three grades of described network elements are that audio frequency and video are used terminal.
9. audio-visual system according to claim 8, is characterized in that described server is one, and described one-level network element is two, and described secondary network element is several, and each secondary network element connects one to four three grades of network element.
10. audio-visual system according to claim 9, is characterized in that described audio-visual system is for the audio/video on-demand system for aircraft, and described one-level network element is network area distributor disk; Described secondary network element is seat Electronic Control Box; It is LCD terminal that described audio frequency and video are used terminal.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106790751A (en) * 2016-12-16 2017-05-31 深圳鲲鹏无限科技有限公司 A kind of method of the physical location information of communication system and its sub- equipment of acquisition
CN107026919A (en) * 2017-03-23 2017-08-08 珠海格力电器股份有限公司 A kind of method, node device and control system for determining the node device network address
CN107454206A (en) * 2017-08-10 2017-12-08 四川长虹电器股份有限公司 A kind of intelligent home device lan address establishing method
CN109842520A (en) * 2018-12-27 2019-06-04 华为技术服务有限公司 The determination method, apparatus and system of network topology
CN110677509A (en) * 2019-09-09 2020-01-10 无锡江南计算技术研究所 Automatic address configuration system suitable for high-performance computer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101443829A (en) * 2005-11-16 2009-05-27 奥蒂斯电梯公司 Running-in usage of elevator and alley way fixed equipment in destination logging group elevator system
CN102082816A (en) * 2010-11-23 2011-06-01 中兴通讯股份有限公司 File transmission method and transmission engines and network elements

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101443829A (en) * 2005-11-16 2009-05-27 奥蒂斯电梯公司 Running-in usage of elevator and alley way fixed equipment in destination logging group elevator system
CN102082816A (en) * 2010-11-23 2011-06-01 中兴通讯股份有限公司 File transmission method and transmission engines and network elements

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106790751A (en) * 2016-12-16 2017-05-31 深圳鲲鹏无限科技有限公司 A kind of method of the physical location information of communication system and its sub- equipment of acquisition
CN106790751B (en) * 2016-12-16 2019-12-27 深圳鲲鹏无限科技有限公司 Communication system and method for acquiring physical position information of sub-equipment
CN107026919A (en) * 2017-03-23 2017-08-08 珠海格力电器股份有限公司 A kind of method, node device and control system for determining the node device network address
CN107026919B (en) * 2017-03-23 2020-05-15 珠海格力电器股份有限公司 Method for determining network address of node equipment, node equipment and control system
CN107454206A (en) * 2017-08-10 2017-12-08 四川长虹电器股份有限公司 A kind of intelligent home device lan address establishing method
CN109842520A (en) * 2018-12-27 2019-06-04 华为技术服务有限公司 The determination method, apparatus and system of network topology
US11929905B2 (en) 2018-12-27 2024-03-12 Huawei Technologies Co., Ltd. Network topology determining method and apparatus, and system
CN110677509A (en) * 2019-09-09 2020-01-10 无锡江南计算技术研究所 Automatic address configuration system suitable for high-performance computer
CN110677509B (en) * 2019-09-09 2022-04-12 无锡江南计算技术研究所 Automatic address configuration system suitable for high-performance computer

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Patentee before: DONICA AVIATION ENGINEERING Co.,Ltd.