WO2015042853A1 - Method, device and system for dividing domain for data communication network - Google Patents

Abstract

The present invention relates to a method, device and system for dividing a domain for a data communication network. The method for dividing a domain for a data communication network comprises: receiving, by a target node, a command for dividing a domain, the command for dividing a domain comprising information about various target nodes needing to be divided from an old domain to a new domain and an identifier of the new domain; judging, by the target node, whether the distance between itself and a gateway of the old domain is the minimum of distances between various target nodes and the gateway according to network topology information about the old domain and information about various target nodes; in the case that the distance between the target node and the gateway is the minimum of the distances between various target nodes and the gateway, setting, by the target node, itself to be a boundary point. In the embodiments of the present invention, in accordance with network topology information and information about various target nodes, if the distance between a target node itself and a gateway is the minimum of distances between various target nodes and the gateway, then the target node sets itself to be a boundary point; the determining process is simple, which may reduce detachment caused by the fault of manually planning the boundary point or searching the boundary point.

Description

 Data communication network sub-domain method, device and system

Technical field

 The present invention relates to the field of communications technologies, and in particular, to a data communication network domain method, apparatus, and system.

Background technique

 Say

 A data communication network (English: Data Communication Network, abbreviated: DCN) can include multiple nodes, each of which needs to record the data communication.

 Book

Information about all nodes in the network. As the number of nodes increases, the node information that each node in a data communication network needs to record also increases, taking up the effective resources of the node. With the advent of virtual network element technology, a data communication network can be divided into multiple sub-networks, and the number of nodes in each sub-network is relatively small, thereby reducing the node information stored in each node.

 In the conventional method of data communication network, the boundary point of the data communication network needs to be determined manually by manual planning or searching; then the boundary point is manually set. If there are many data communication network nodes, it is difficult to manually plan or find the boundary points of the data communication network.

 In summary, it is generally difficult to determine the boundary point in the domain division process of the data communication network.

Summary of the invention

 technical problem

 In view of this, the technical problem to be solved by the present invention is how to determine the boundary point in the domain division process of the data communication network.

 solution

In order to solve the above technical problem, in a first aspect, the present invention proposes a data Communication network domain method, including:

 The target node receives the domain command, and the domain command includes information of each target node that needs to be divided from the old domain to the new domain and the new domain identifier;

 Determining, according to the network topology information of the old domain and the information of each target node, whether the distance between the target node and the gateway of the old domain is the smallest distance between the target nodes and the gateway ;

 The distance between the target node and the gateway is the respective target node and said

In the case where the distance of the gateway is the smallest, the target node sets itself as a boundary point.

 Book

 With reference to the first aspect, in a first possible implementation, the target node sets itself as a boundary point, including:

 The target node sets the network number in the IP address of the port used by the new domain to the network number corresponding to the new domain identifier.

 With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the method further includes:

 In a case where the distance between the target node and the gateway is not the smallest among the distances of the respective target nodes and the gateway, the target node sets itself in a network in an IP address of a port used by the old domain. No., changed to the network number corresponding to the new domain identifier.

 With reference to the first aspect, the first possible implementation manner of the first aspect, or the second possible implementation manner of the first aspect, in a third possible implementation, the target node receiving the domain command includes:

 When the target node is a master node, the master node receives the domain command from the network manager through the gateway, and sends the domain command to other target nodes than the master node;

In the case that the target node is not a master node, the target node receives the domain command from the master node. With reference to the first aspect, the first possible implementation of the first aspect, to any one of the possible implementations of the third possible implementation of the first aspect, in a fourth possible implementation, the And the distance between the target node and the gateway is the smallest one of the distances between the target nodes and the gateway, and after the target node sets itself as a boundary point, the method further includes:

 In the case where the boundary point is disconnected from the old domain, a disconnection notification is sent to a target node other than the boundary point, so that the boundary point is said to be

The other target nodes outside re-determine the boundary points.

 In a second aspect, the present invention provides a data communication network sub-domain device, including:

 a receiving unit, configured to receive a domain command, where the domain command includes information of each target node that needs to be allocated from the old domain to the new domain, and the new domain identifier;

 a determining unit, configured to be connected to the receiving unit, configured to determine, according to the network topology information of the old domain and the information of each target node, whether the distance between the device and the gateway of the old domain is the target node The smallest of the distances from the gateway;

 The setting unit is connected to the determining unit, and is configured to set itself as a boundary point when the distance between the device and the gateway is the smallest distance between the target nodes and the gateway.

 With reference to the second aspect, in a first possible implementation, the setting unit specifically includes: configured to: when a distance between the device and the gateway is the smallest distance between each target node and the gateway And setting the network number in the IP address of the port used by the device in the new domain to the network number corresponding to the new domain identifier.

 With the second aspect or the first possible implementation of the second aspect, in a second possible implementation, the setting unit is further configured to: the distance between the device and the gateway is not the target node When the distance between the gateways is the smallest, the network number in the IP address of the port used by the device in the old domain is changed to the new i or the network number corresponding to the identifier.

Combining the second aspect, the first possible implementation of the second aspect, or the second aspect The second possible implementation manner, in the third possible implementation manner, the receiving unit specifically includes:

 a first receiving subunit, configured to: when the device is a master node, receive the domain command from the network manager by using the gateway, and send the domain command to other targets than the master node Node

 And a second receiving subunit, configured to receive the subdomain command from the primary node if the device is not a primary node.

 Combining the second aspect, the first possible implementation of the second aspect, or any of the possible implementations of the third possible implementation of the second aspect, in the fourth possible book

In the implementation, it also includes:

 a sending unit, configured to be connected to the setting unit, configured to send a disconnection notification to a target node other than the boundary point if the boundary point is disconnected from the old domain, so that the The target node other than the boundary point re-determines the boundary point.

 In a third aspect, the present invention provides a data communication network sub-domain system, including: a network manager, a gateway, and at least one node device;

Including information of each target node device that needs to be divided from the old domain to the new domain and the new domain identifier;

 The node device adopts the second aspect or the first possible implementation manner of the second aspect to the data communication network domain-dividing device in any one of the possible implementation manners of the fourth possible implementation manner of the second aspect;

 The gateway is connected to the network manager, and configured to receive the domain command sent by the network manager, and forward the domain command to the node device.

 Beneficial effect

In the data communication network domain method of the embodiment, the target node according to the network topology information and the information of each target node, if the distance between itself and the gateway is each target node and If the distance of the gateway is the smallest, the target node sets itself as the boundary point, and determines the process order, which can reduce the manual planning boundary point or find the disconnection caused by the boundary point error. The target node other than the boundary point changes the network number in the IP address of the port used by the old domain to the network number corresponding to the new domain identifier, and divides the data communication network into domains, thereby reducing the size of the data communication network. The route flapping converges quickly.

 Further features and aspects of the present invention will become apparent from the Detailed Description of the Drawing.

 Description of the drawings

 Book

 The accompanying drawings, which are incorporated in FIG

 Figure la is a flow chart of a method for dividing a data communication network according to Embodiment 1 of the present invention;

 Figure lb is a schematic diagram of a data communication network before the domain division method of the data communication network according to the first embodiment of the present invention;

 Figure lc is a schematic diagram of a data communication network after the domain division method of the data communication network according to the first embodiment of the present invention;

 2 is a flow chart of a method for dividing a data communication network according to Embodiment 2 of the present invention;

 3 is a structural block diagram of a data communication network domain dividing apparatus according to Embodiment 3 of the present invention;

 4 is a structural block diagram of a data communication network domain dividing apparatus according to Embodiment 4 of the present invention;

 5 is a structural block diagram of a data communication network domain dividing apparatus according to Embodiment 5 of the present invention;

6 is a structural diagram of a data communication network sub-domain system according to Embodiment 6 of the present invention; Intention.

detailed description

 Various exemplary embodiments, features, and aspects of the invention are described in detail below with reference to the drawings. The same reference numerals in the drawings denote the same or similar elements. Although the various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

 Say

 The term "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustrative." Any embodiment described herein as "exemplary" is not necessarily construed as being superior or better than its

 Book

It is an embodiment.

 Further, in order to better illustrate the invention, numerous specific details are set forth in the Detailed Description. Those skilled in the art will appreciate that the invention may be practiced without some specific details. In other instances, well-known methods, means, components and circuits are not described in detail to facilitate the disclosure of the invention.

 Example 1

 Figure la is a flow chart of a method for dividing a data communication network according to Embodiment 1 of the present invention. As shown in FIG. la, the data communication network domain method may specifically include:

 Step S110: The target node receives the domain command, and the domain command includes information of each target node that needs to be divided from the old domain to the new domain and the new domain identifier.

Specifically, each data communication network (DCN) may include multiple nodes (also referred to as network elements), and each data communication network has a domain identifier that distinguishes it from other data communication networks (English: Identification, abbreviation) : ID ). The domain ID can be a number. If the network numbers of the IP addresses of the ports used by the plurality of nodes in the data communication network are the same, the plurality of nodes belong to the same data communication network. The network number of each data communication network has a corresponding relationship with the domain identifier of the data communication network, and the correspondence relationship may be selected according to rules or policies, for example: according to rules Or the policy, set the network number of the data communication network with the domain identifier 0 to 192.168.0.1, and set the network number of the data communication network with the domain identifier 1 to 129.8.0.0.

 The Network Manager (English: Network Manager, abbreviated: NM) can access the managed data communication network by sending a login command to each node of the managed data communication network to enable it to log in to each node. The network manager can first send a login command to the gateway in the data communication network (English: Gateway), and the gateway can add its own IP address to the login command to form a new number.

According to the package, the gateway sends the new packet to each node. After receiving the new data packet, each node performs login authentication, records the IP address of the gateway, and according to the gateway book.

The IP address returns the authentication result to the gateway. Finally, the gateway summarizes the authentication results of each node and sends them to the network manager. In some cases (such as when there are many nodes in a data communication network) that need to be partitioned, the network manager can send a domain command to the gateway. The current data communication network is an old domain, and the data communication network formed by the target nodes divided from the old domain is a new domain, and the old domain is removed from the target node, and the nodes other than the old domain still belong to the old domain. The identity of the new domain.

 For example, FIG. 1b is a schematic diagram of a data communication network before the domain division method of the data communication network according to the first embodiment of the present invention, and FIG. 1c is a data communication network after the domain division method of the data communication network according to the first embodiment of the present invention. schematic diagram. Referring to FIG. 1b and FIG. 1c, the data communication network may include multiple nodes, the node connected to the network manager is a gateway, and the node that receives the domain command sent by the gateway is the master node, and the node that needs to be separated from the data communication network is Target node. The old domain ID is 1 and the new domain ID is 2. The old domain includes nodes 1 to 6 with a total of six nodes. Assume that node 1 is the gateway and node 2 to node 5 are the target nodes. From node 2 to node 5, it can be learned from the received domain command that it has to be divided into new domains, and the new domain identifier is 2.

 In a possible implementation manner, the target node receiving the domain command may include:

In the case where the target node is a master node (English: master ), the master The node receives the domain command from the network manager through the gateway, and sends the domain command to other target nodes than the master node;

 In case the target node is not the primary node, the target node receives the domain command from the primary node.

 Specifically, in the node of the data communication network, a node may be selected as the master node of the data communication network, and the master node may be arbitrarily selected in the node of the data communication network, or may be selected according to other rules or policies. I don’t say this.

limit. When a domain is required, for example, when there are too many nodes in the old domain, after receiving the above-mentioned domain command from the network manager, the gateway may send the domain command to the master node, and then the book

The master node forwards the domain command to the target node. If the user is not the master node, the domain command sent by the master node may be received; if the master node is the master node, the domain command sent by the gateway may be received, and the domain command is sent to other targets than itself. node. For example, referring to FIG. 1b, the node 1 is a gateway, the node 6 is a master node of the old domain, and the nodes 4 to 5 are the target nodes. When node 6 receives the sub-domain command sent by node 1, the four target nodes from node 2 to node 5 can receive the sub-domain command sent by node 6.

 Step S130: The target node determines, according to the network topology information of the old domain and the information of each target node, whether the distance between itself and the gateway of the old domain is the target node and the gateway. The smallest of the distance.

 Specifically, the network topology information of the node may be a tree rooted at itself, and the node may calculate the distance from itself to any node in the network topology information. Therefore, the target node can determine whether the distance between itself and the gateway is smaller than the distance from the target node to the gateway other than itself.

 Method 1: The target node calculates the distance from all the target nodes to the gateway separately; then compares the distance from the gateway to the gateway and the distance from other target nodes to the gateway.

For example, referring to FIG. 1b, it is assumed that node 1 is a gateway, node 2 to node 5 are target nodes, and node 2 can calculate distance L ₂ from node 2 to gateway, distance L ₃ from node 3 to gateway, The distance L ₄ from the node 4 to the gateway and the distance L ₅ from the node 5 to the gateway are compared with L ₂ , L ₃ , U and L ₅ to determine whether L ₂ is smaller than L ₃ , L ₄ and L ₅ . Node 3 can calculate L ₂ , L ₃ , L _{4 ,} and L ₅ to determine if L ₃ is less than L ₂ , L _{4 ,} and L ₅ . Node 4 can calculate L ₂ , L ₃ , L _{4 ,} and L ₅ to determine if L ₄ is less than L ₂ , L _{3 ,} and L ₅ . Node 5 can calculate L ₂ , L ₃ , L _{4 ,} and L ₅ to determine if L ₅ is less than L ₂ , L _{3 ,} and L ₄ .

 Method 2: The target node calculates its own distance to the gateway; and then receives the target node other than itself sent by the target node other than itself to the network.

The distance is closed, and then the distance from the gateway to the gateway is compared with the distance from other target nodes to the gateway.

 Book

For example, referring to FIG LB, assumed that the node 1 as a gateway node to the target node 2 ~ node 5, node 2 may calculate the distance to the gateway node 2 L _2, and the receiving node ₃ L 3 transmitted, the node ₄ L 4 and transmitted L ₅ sent by the node 5, Comparative L _2, L _3, L ₄ and L _5, and then determines L ₂ is smaller than L _3, L ₄ and L _5. Node 3 may calculate the node 3 to the distance from the gateway L _3, and the receiving node L _2, L ₅ node ₄ L 4 and the node are sent as 5 transmission 2, Comparative L _2, L _3, L ₄ and L _5, and then It is judged whether L ₃ is smaller than L ₂ , L ₄ and L ₅ . 4 to the gateway from node 4 may compute nodes L _4, and the receiving node L _2, L ₅ L ₃ and node transmission 3 transmits the 5 transmission 2, Comparative L _2, L _3, L ₄ and L _5, and then It is judged whether L ₄ is smaller than L ₂ , L ₃ and L ₅ . Node 5 may calculate the node 5 to the gateway the distance L _5, and the receiving node L _2, L _4, Comparative L _2, L _3, L ₄ and L ₅ transmitted L ₃ and node transmission 34 transmitted 2, then It is judged whether L ₅ is smaller than L ₂ , L ₃ and L ₄ .

 Step S150: In a case where the distance between the target node and the gateway is the smallest among the distances of the target nodes and the gateway, the target node sets itself as a boundary point.

Specifically, the usual method of determining the boundary points is to manually plan or find the boundary points in the data communication network through certain rules. If the rules of manual planning or finding are incorrectly set, the boundary points are determined to be incorrect, causing all target nodes to be taken out of control. Compared with the determining method of the normal boundary point, the target node of this embodiment receives the above-mentioned subdomain command. After that, the target node can determine that it is a boundary point according to the network topology information stored by itself and the information of each target node, and the distance between the target node and the gateway is the smallest among the distance between the target node and the gateway.

 Specifically, the boundary point can interact with nodes in the old domain as well as with nodes in the new domain. That is: the interaction between the old domain and the new domain can be achieved through the boundary point.

 In a possible implementation manner, the target node sets itself as a boundary point, including: the target node refers to an IP address of a port used by the new domain.

The network number in the middle is set to the network number corresponding to the new domain identifier.

 Specifically, if the target node determines that the distance between itself and the gateway is each target node and the book

If the distance between the gateways is the smallest, the target node can retain the IP address of the port used by the old domain. At the same time, set the network number in the IP address of the port used by the new domain to the new domain identifier. Network number.

 In a possible implementation manner, the data communication network sub-domain method further includes: if a distance between the target node and the gateway is not the smallest among the distances between the target nodes and the gateway, The target node changes the network number in the IP address of the port used by the old domain to the network number corresponding to the new domain identifier.

For example, referring to FIG. 1b, ^ is set in the first mode or the second mode in step S130, and after comparing node 2 to node 5, it is known that: L ₂ < L ₃ < L ₅ < L ₄ , then nodes 2 to 5 can be known. Node 2 is the boundary point, and node 2 can retain the IP address of the port used by the old domain whose domain ID is 1 and the IP address of the port used by the new domain whose domain ID is 2 The network number is set to the network number corresponding to domain identifier 2. The node 3, the node 4, and the node 5 can change the network number in the IP address of the port used by the old domain whose domain ID is 1 to the network number corresponding to the domain identifier 2, respectively. Therefore, the old domain after the domain is divided into the figure lc, the node 2 to node 5 which are separated from the old domain with the domain identifier of 1 constitutes a new domain with the domain identifier 2, and the domain identifier is 1. The old domain removes node 3, node 2, and node 6 except nodes 3 to 5 The node still belongs to the old domain with domain ID 1. In addition, the interaction between the old domain with domain ID 1 and the new domain with domain ID 2 can be implemented by node 2.

 According to the data communication network domain method of the embodiment of the present invention, the target node sets the target node according to the network topology information and the information of each target node. If the distance between the target node and the gateway is the smallest, the target node sets itself. For the boundary point, determine the process bill, which can reduce the manual planning of the boundary point or find the decoupling caused by the mistake of the boundary point. Said that the target node other than the boundary point will use itself in the port used by the old domain

The network number in the IP address is changed to the network number corresponding to the new domain identifier. The data communication network is divided into domains, which can reduce the size of the data communication network, and the route flapping convergence is fast.

 Book

 Example 2

 2 is a flow chart of a method for dividing a data communication network according to a second embodiment of the present invention. The same steps in Fig. 2 as those in Fig. 1 have the same functions, and a detailed description of these steps will be omitted for the sake of clarity.

 As shown in FIG. 2, the main difference between the data communication network domain method shown in FIG. 2 and the data communication network domain method shown in FIG. 1 is that, in addition to the step S110, step S130 and step S in the first embodiment, In addition to 150, it can also include:

 Step S210: When the boundary point is disconnected from the old domain, send a disconnection notification to a target node other than the boundary point, so that the target node other than the boundary point is sent. Re-determine the boundary points.

 Specifically, after the old domain is divided, if the boundary point set in step S150 is disconnected from the old domain, in order to ensure that the node in the new domain is not disconnected, the target node may be other than the boundary point. The other target node sends a disconnection notification, and after receiving the disconnection notification, the target node other than the boundary point knows that the connection between the target node set as the boundary point and the old domain is disconnected, and the target node other than the boundary point The network topology information can be updated, and the boundary points are re-determined and the boundary points are set according to the methods in steps S130 and S150.

For example, see Figure lc, branch node 2 is the boundary point, the old domain has been divided into domains, If the connection between the node 2 and the old domain with the domain identifier of 1 is broken, the node 2 can send a disconnection notification to the node 3, the node 4, and the node 5, respectively. After receiving the disconnection notification sent by the node 2, the node 3, the node 4, and the node 5 respectively update the network topology information stored by themselves. The node 3 can calculate the distance L ₃ from the node 3 to the gateway, the distance L ₄ from the node 4 to the gateway, and the distance L ₅ from the node 5 to the gateway, and then compare L ₃ , L ₄ and L ₅ to determine whether L ₃ is smaller than L ₄ and L ₅ . Node 4 can calculate L ₃ , L _{4 ,} and L ₅ , and then compare L ₃ , L _{4 ,} and L ₅ to determine if L ₄ is less than L ₃ and L ₅ . Node 5 can calculate L ₃ , L ₄ and L ₅ , and then compare L ₃ , L ₄ and L ₅ to determine whether L ₅ is smaller than L ₃

And L ₄ . After the comparison of the support node 3, the node 4 and the node 5, it is known that: L ₃ < L ₅ < L ₄ , then the node 3, the node 4 and the node 5 can know that the node 3 is a boundary point. Node 3 can be kept from the book

The IP address of the port used in the new domain with the domain ID 2, and the network number in the IP address of the port used by the old domain whose domain ID is 1 is set, and the network corresponding to the domain ID 1 is set. number.

 According to the data communication network domain method of the embodiment of the present invention, the target node sets the target node according to the network topology information and the information of each target node. If the distance between the target node and the gateway is the smallest, the target node sets itself. For the boundary point, the process cartridge is determined, which can reduce the manual planning or find the disconnection caused by the mistake of the boundary point. The target node other than the boundary point changes the network number in the IP address of the port used by the old domain to the network number corresponding to the new domain identifier, and divides the data communication network into domains, thereby reducing the data communication network. Scale, route oscillating convergence is fast. In addition, when the connection between the boundary point and the old domain is disconnected, a disconnection notification is sent to other target nodes than the boundary point, so that the target node other than the boundary point re-determines the boundary point, and the boundary point can be avoided. The other target nodes are out of control.

 Example 3

FIG. 3 is a structural block diagram of a data communication network domain dividing apparatus according to Embodiment 3 of the present invention. The data communication network domain device 300 provided in this embodiment is used to implement the data communication network domain method provided by the embodiment shown in FIG. As shown in FIG. 3, the data communication network domain device 300 may include: The receiving unit 310 is configured to receive a domain command, where the domain command includes information of each target node that needs to be allocated from the old domain to the new domain, and the new domain identifier.

 Specifically, each data communication network may include a plurality of nodes, and each of the data communication networks has a domain identifier that distinguishes it from other data communication networks. The domain ID can be a number. If the network numbers of the IP addresses of the ports used by the plurality of nodes in the data communication network are the same, the plurality of nodes belong to the same data communication network. The network number of each data communication network and the domain identifier of the data communication network have

Correspondence relationship, the correspondence relationship may be selected according to a rule or a policy, for example: a network number of a data communication network with a domain identifier of 0 may be set according to a rule or a policy.

192.168.0.1, Set the network number of the data communication network with domain ID 1 to 129.8.0.0.

 The network manager can access the managed data communication network by sending login commands to various nodes of the managed data communication network to enable it to log in to each node. The network manager may first send a login command to the gateway in the data communication network, and the gateway may add its own IP address to the login command to form a new data packet, and the gateway sends the new data packet to each node. After receiving the new data packet, each node records the IP address of the gateway, performs login authentication, and returns the authentication result to the gateway according to the IP address of the gateway. Finally, the gateway summarizes the authentication results of each node and sends them to the network manager. In some cases (such as when there are many nodes in a data communication network) that need to be partitioned, the network manager can send a domain command to the gateway. The current data communication network is an old domain, and the data communication network formed by the target node divided from the old domain is a new domain, and the node other than the old domain removal target node still belongs to the old domain, and the new domain identifier is the new domain. The identity of the domain. The target node can be a domain communication device of the data communication network of the present embodiment.

For example, see Figure lb and Figure lc, with the old domain ID being 1 and the new domain ID being 2. The old domain includes a total of six nodes from node 1 to node 6, assuming that node 1 is a gateway, nodes 4 to 5 are the target nodes, and nodes 2 to 5 can be data communication network domain devices 300. The subdomains that Node 2 ~ Node 5 can receive from respective receiving units 310, respectively In the command, you know that you want to divide the domain into the new domain, and the new domain ID is 2.

 In a possible implementation, the receiving unit 310 may specifically include: a first receiving subunit 311, configured to receive the domain command from the network manager by using the gateway, if the device is the master node, Sending the domain command to other target nodes than the master node;

 The second receiving subunit 313 is configured to receive the domain command from the master node if the device is not the master node.

 Say

 Specifically, in the node of the data communication network, a node may be selected as the master node of the data communication network, and the master node may be in the node of the data communication network.

The selection may also be based on other rules or policies, which is not limited in this embodiment. When a domain is required, for example, when there are too many nodes in the old domain, after receiving the above-mentioned domain command from the network manager, the gateway may send the domain command to the master node, and then the master node forwards the domain command to the master node. Target node. If the device is not the master node, the second receiving subunit 313 can receive the domain command sent by the master node; if the device is the master node, the first receiving subunit 311 can receive the domain command sent by the gateway. , the domain command is sent to a target node other than the device. For example, see Figure lb, assuming node 1 is the gateway, node 6 is the primary node of the old domain, and node 4 to node 5 are the target nodes. When the node 6 receives the domain command sent by the node 1, the second receiving subunit 313 of the node 2 may receive the domain command sent by the node 6; the second receiving subunit 313 of the node 3 may receive the domain sent by the node 6. The second receiving sub-unit 313 of the node 4 may receive the sub-domain command sent by the node 6; the second receiving sub-unit 313 of the node 5 may receive the sub-domain command sent by the node 6.

 The determining unit 330 is connected to the receiving unit 310, and configured to determine, according to the network topology information of the old domain and the information of each target node, whether the distance between the device and the gateway of the old domain is the The smallest of the distance between the target node and the gateway.

Specifically, the determining unit 330 can determine the device and the following two manners. Whether the distance of the gateway is smaller than the distance from the target node to the gateway other than the device.

 Method 1, the determining unit 330 calculates the distances of all the target nodes to the gateway respectively; and compares the distance from the device to the gateway to the distance from the target node other than the device to the gateway.

For example, referring to FIG. 1b, it is assumed that node 1 is a gateway, and nodes 2 to 5 are target nodes, and the determining unit 330 of node 2 can calculate the distance L ₂ from node 2 to the gateway, respectively.

Point 3 to the distance L _{3 of the} gateway, the distance L ₄ from the node 4 to the gateway, and the distance L ₅ from the node 5 to the gateway, and compare L ₂ , L ₃ , L ₄ and L ₅ , and then determine whether L ₂ is smaller than L ₃ , L ₄ and L ₅ . Node 3 book

The judging unit 330 may calculate L ₂ , L ₃ , L _{4 ,} and L ₅ , respectively, and determine whether L ₃ is smaller than L ₂ , L _{4 ,} and L ₅ . The judging unit 330 of the node 4 can calculate L ₂ , L ₃ , L _{4 ,} and L ₅ , respectively, and determine whether L ₄ is smaller than L ₂ , L _{3 ,} and L ₅ . The judging unit 330 of the node 5 can calculate L ₂ , L ₃ , L _{4 ,} and L ₅ , respectively, and determine whether L ₅ is smaller than L ₂ , L _{3 ,} and L ₄ .

 In a second manner, the determining unit 330 calculates the distance from the device to the gateway; and then receives the distance from the target node to the gateway sent by the target node other than the device, and compares the distance between the device and the gateway. The distance from the target node to the gateway other than the device.

For example, referring to FIG. 1b, assuming that node 1 is a gateway and node 2 to node 5 are target nodes, the determining unit 330 of node 2 can calculate the distance L ₂ from the node 2 to the gateway, and send the L ₃ and node 4 sent by the receiving node 3 to send L ₄ and L ₅ of the transmitting node 5, Comparative L _2, L _3, L ₄ and L _5, and then determines L ₂ is smaller than L _3, L ₄ and L _5. Node determining unit 3 330 may calculate the node 3 to the gateway the distance L _3, and the receiving node L _{5 2} L 2, node L ₄ and node 5 are sent as transmission 4, Comparative L _2, L _3, L ₄ and L ₅ , and then judge whether L ₃ is smaller than L ₂ , L ₄ and L ₅ . Node determining unit 4 330 may calculate 4 to the gateway from node L _4, and the receiving node 2 L ₂ transmitted, L ₅ 3 L ₅ transmitted from the transmitter ₃ and the node, comparing L _2, L _3, L ₄ and L ₅ , and then judge whether L ₄ is smaller than L ₂ , L ₃ and L ₅ . The determining unit 330 of the node 5 can calculate the distance L ₅ from the node 5 to the gateway, and receive the L ₂ and node 3 sent by the node 2 L ₃ and sent to the transmission node 4 L _4, Comparative L _2, L _3, L ₄ and L _5, L ₅ then determines whether less than L _2, L ₃ and L _4.

 The setting unit 350 is connected to the determining unit 330, and is configured to set the device as a boundary point when the distance between the device and the gateway is the smallest distance between the target nodes and the gateway.

 In a possible implementation, the setting unit 350 specifically includes: a distance between the device and the gateway is a distance between each target node and the gateway.

In the case of the smallest one, the network number in the IP address of the port used by the device in the new domain is set to the network number corresponding to the new domain identifier.

 Book

 Specifically, if the determining unit 330 determines that the distance between the device and the gateway is the smallest among the distances of the target nodes and the gateway, the setting unit 350 may retain the IP address of the port used by the device in the old domain, and at the same time, The network number in the IP address of the port used by the device in the new domain is set to the network number corresponding to the new domain identifier.

 In a possible implementation, the setting unit 350 is further configured to: when the distance between the device and the gateway is not the smallest of the distance between the target node and the gateway, The network number in the IP address of the port used by the old domain is changed to the network number corresponding to the new domain identifier.

For example, referring to FIG. 1b, it is assumed that the judgment unit 330 of the node 2 to the node 5 compares and learns that: L ₂ < L ₃ < L ₅ < L ₄ , the setting unit 350 of the node 2 to the node 5 can know that the node 2 is a boundary point. The setting unit 350 of the node 2 may retain the IP address of the port used by the device in the old domain with the domain identifier 1 and the IP address of the port used by the device in the new domain with the domain ID 2 The network number is set to the network number corresponding to domain identifier 2. The setting unit 350 of the node 3 may change the network number in the IP address of the port used by the device in the old domain with the domain identifier 1 to the network number corresponding to the domain identifier 2, and the setting unit 350 of the node 4 may The network number in the IP address of the port used by the device in the old domain with the domain identifier 1 is changed to the network number corresponding to the domain identifier 2. The setting unit 350 of the node 5 can identify the old domain whose device is identified as 1 in the domain. Port used in The network number in the IP address is changed to the network number corresponding to the domain identifier 2.

 In the data communication network domain device of the embodiment of the present invention, the determining unit may, according to the network topology information and the information of each target node, if the distance between the device and the gateway is the smallest among the distances between the target nodes and the gateway, the setting unit will The device is set as a boundary point to determine the process cartridge, which can reduce the manual planning of the boundary point or find the decoupling caused by the mistake of the boundary point. The setting unit of the target node other than the boundary point changes the network number in the IP address of the port used by the old domain to the network corresponding to the new domain identifier.

No. The data communication network is divided into domains, which can reduce the scale of the data communication network, and the route oscillation converges quickly.

 Book

 Example 4

 Figure 4 is a block diagram showing the structure of a data communication network domain dividing apparatus according to a fourth embodiment of the present invention. The data communication network domain device 400 provided in this embodiment is used to implement the data communication network domain method provided by the embodiment shown in FIG. 2. The components of the same reference numerals as those of FIG. 3 in FIG. 4 include: a receiving unit 310, a first receiving subunit 311, a second receiving subunit 313, a judging unit 330, and a setting unit 350, which have substantially the same functions as the foregoing, For the sake of clarity, a detailed description of these components is omitted.

 In addition, by comparing FIG. 3 and FIG. 4, the main difference between the embodiment shown in FIG. 4 and the embodiment shown in FIG. 3 is that, based on the embodiment shown in FIG. 3, the data communication network domain-dividing device 400 further Can include:

 a sending unit 410, configured to be connected to the setting unit 350, configured to send a disconnection notification to a target node other than the boundary point when the boundary point is disconnected from the old domain, so that The target nodes other than the boundary points are re-determined boundary points.

Specifically, after the old domain is divided, if the connection between the device and the old domain is disconnected, in order to ensure that the node in the new domain is not disconnected, the sending unit 410 may send the disconnection to other target nodes except the device. Notifying that, after receiving the disconnection notification, the target node other than the device knows that the connection between the device and the old domain is disconnected, except the device Other target nodes than others may update the network topology information, and the determination unit 330 and the setting unit 350 of the target nodes other than the present apparatus may re-determine the boundary points and set the boundary points.

 For example, referring to FIG. 1c, the node 2 is a boundary point, the old domain has been divided into domains, and the connection between the node 2 and the old domain with the domain identifier 1 is disconnected, and the sending unit 410 of the node 2 can respectively reach the node 3. Node 4 and Node 5 send a disconnect notification. After receiving the disconnection notification sent by the transmitting unit 410 of the node 2, the node 3, the node 4, and the node 5 respectively update their storage.

Network topology information. The determining unit 330 of the node 3 can calculate the distance L ₃ from the node 3 to the gateway, the distance L ₄ from the node 4 to the gateway, and the distance L ₅ from the node 5 to the gateway, and then compare L ₃ , the book

L ₄ and L ₅ , judge whether L ₃ is smaller than L ₄ and L ₅ . The judging unit 330 of the node 4 can calculate L ₃ , L _{4 ,} and L ₅ , and then compare L ₃ , L _{4 ,} and L ₅ to determine whether L ₄ is smaller than L ₃ and L ₅ . The judging unit 330 of the node 5 can calculate L ₃ , L _{4 ,} and L ₅ , and then compare L ₃ , L _{4 ,} and L ₅ to determine whether L ₅ is smaller than L ₃ and L ₄ . Assuming that the judging unit 330 of the node 3, the judging unit 330 of the node 4, and the judging unit 330 of the node 5 are compared, it is known that: L ₃ < L ₅ < L ₄ , the setting unit 350 of the node 3, the setting unit 350 of the node 4, and The setting unit 350 of the node 5 can know that the node 3 is a boundary point. The setting unit 350 of the node 3 may retain the IP address of the port itself used in the new domain with the domain identifier 2, and the network number in the IP address of the port used by the old domain whose domain is identified as 1 in the domain , Set the network number corresponding to domain ID 1.

In the data communication network domain device of the embodiment of the present invention, the determining unit may, according to the network topology information and the information of each target node, if the distance between the device and the gateway is the smallest among the distances between the target nodes and the gateway, the setting unit will The device is set as a boundary point to determine the process cartridge, which can reduce manual planning or find the pipe off caused by the mistake of the boundary point. The setting unit of the target node other than the boundary point changes the network number in the IP address of the port used by the old domain to the network number corresponding to the new domain identifier, and divides the data communication network into domains, thereby reducing data communication. The scale of the network, the route oscillates and converges quickly. Further, when the connection between the device and the data communication network is disconnected, the transmitting unit transmits a disconnection notification to the target node other than the device, so that the device other than the device Its target node re-determines the boundary point, which can avoid the deactivation of other target nodes except the device.

 Example 5

 5 is a structural block diagram of a data communication network domain dividing device according to Embodiment 5 of the present invention; the data communication network domain dividing device 500 may be a computing server host computer, a personal computer PC, or a portable computer or terminal Wait. The specific embodiment of the present invention does not limit the specific implementation of the computing node.

 Say

 The data communication network domain device 500 includes a receiver (English: receiver) 510, a processor (English: processor) 520, and a memory (English: book

Memory) 540 and bus 550. In the case where the data communication network domain device 500 is a boundary point, the data communication network domain device 500 may further include a transmitter (English: transmitter) 530. The receiver 510, the processor 520, the transmitter 530, and the memory 540 perform communication with each other via the bus 550.

 The receiver 510 is configured to receive the domain command.

 The memory 540 is configured to store information including a program routine. The memory 540 may include a high speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory. Memory 540 can also be a memory array. Memory 540 may also be partitioned, and the blocks may be combined into virtual volumes according to certain rules.

 The processor 520 is coupled to the receiver 510, the transmitter 530, and the memory 540 for controlling execution of the program routine. The processor 520 may be a central processing unit CPU, or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. The processor 520 controls the execution of the program routine, and specifically includes:

Receiving a domain command, where the domain command includes information of each target node that needs to be divided from the old domain to the new domain, and the new domain identifier; Determining, according to the network topology information of the old domain and the information of each target node, whether the distance between the device and the gateway of the old domain is the smallest of the distances between the target nodes and the gateway;

 In the case where the distance between the device and the gateway is the smallest of the distances between the respective target nodes and the gateway, the device is set as a boundary point.

 In a possible implementation manner, the program routine further includes:

 The distance between the device and the gateway is not the said target node and the network said

When the distance is the smallest, the network number in the IP address of the port used by the device in the old domain is changed to the network number corresponding to the new domain identifier.

 Book

 a transmitter 530, configured to send, when the boundary point is disconnected from the old domain, a disconnection notification to a target node other than the boundary point, so that the other than the boundary point Other target nodes re-determine the boundary points.

 According to the network topology information of the embodiment of the present invention, according to the network topology information and the information of each target node, if the distance between the device and the gateway is the smallest among the distances between the target nodes and the gateway, the device is set as a boundary. Point, determine the process bill, can reduce the manual planning or find the pipe off caused by the mistake of the boundary point. The target node other than the boundary point changes the network number in the IP address of the port used by the old domain to the network number corresponding to the new domain identifier, and divides the data communication network into domains, which can reduce the data communication network. Scale, route oscillating convergence is fast. In addition, when the connection between the device and the old domain is disconnected, a disconnection notification is sent to a target node other than the device, so that the target node other than the device re-determines the boundary point, and the device other than the device can be avoided. The other target nodes are out of control.

Those of ordinary skill in the art will appreciate that the various exemplary units and algorithm steps in the embodiments described herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the application of the technical solution and the design constraints. Professionals can choose different methods for specific applications to implement the described functions, but this implementation does not It is considered to be outside the scope of the invention.

 If the function is implemented in the form of computer software and sold or used as a stand-alone product, it may be considered to some extent that all or part of the technical solution of the present invention (for example, a part contributing to the prior art) is It is embodied in the form of computer software products. The computer software product is typically stored in a computer readable storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the method of various embodiments of the present invention.

Step. The foregoing storage medium includes a USB flash drive, a mobile hard disk, a read only memory (English: Read-Only Memory, abbreviation: ROM), and a random access memory (English: Random book)

Access Memory, abbreviated: RAM), disk or disc, etc. A variety of media that can store program code.

 Example 6

 Figure 6 is a block diagram showing the structure of a data communication network sub-domain system according to a sixth embodiment of the present invention. As shown in FIG. 6, the data communication network sub-domain system 600 can include:

 Network manager 610, gateway 630 and at least one node device 650.

The domain command includes information of each target node device that needs to be divided from the old domain to the new domain and the new domain identifier;

 The node device 650 may adopt any of the data communication network sub-domain devices in the foregoing Embodiments 3 to 5;

 The gateway 630 is connected to the network manager 610, and configured to receive the domain command sent by the network manager 610, and forward the domain command to the node device 650.

In the data communication network sub-domain system of the embodiment of the present invention, when the node device receives the domain command sent by the network manager through the gateway, the target node device according to the network topology information and the information of each target node device, if it and the gateway The distance is the smallest of the distance between each target node and the gateway, and the target node device sets itself as the boundary point setting. Prepare, determine the process of the single, can reduce the manual planning or find the boundary point equipment failure caused by the pipe. The target node device other than the border point device changes the network number in the IP address of the port used by the old domain to the network number corresponding to the new domain identifier, and divides the data communication network into domains, thereby reducing data communication. The scale of the network and the convergence of the routes converge quickly. Further, when the connection between the boundary point device and the old domain is disconnected, a disconnection notification is sent to other target node devices than the boundary point device, so that the target node device other than the boundary point boundary re-determines the boundary point device, Can avoid other target sections

The point device is out of control.

 The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention

It is not limited thereto, and any person skilled in the art can easily conceive changes or substitutions within the scope of the present invention within the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

claims 1. A data communication network domain division method, characterized by including: The target node receives a domain division command, the domain division command includes information about each target node that needs to be divided from the old domain to the new domain and the new domain identification; The target node determines whether the distance between itself and the gateway of the old domain is the smallest among the distances between the target nodes and the gateway based on the network topology information of the old domain and the information of each target node. ; When the distance between the target node and the gateway is the smallest of the distances between the target nodes and the gateway, the target node sets itself as a boundary point. 2. The data communication network domain division method according to claim 1, characterized in that the target node sets itself as a boundary point, including: The target node sets the network number in the IP address of the port used by itself in the new domain as the network number corresponding to the new domain identifier. 3. The data communication network domain division method according to claim 1 or 2, further comprising: In the case where the distance between the target node and the gateway is not the smallest among the distances between the target nodes and the gateway, the target node will connect itself to the network in the IP address of the port used by the old domain. The number is changed to the network number corresponding to the new domain identifier. 4. The data communication network domain division method according to any one of claims 1 to 3, characterized in that the target node receives a domain division command, including: When the target node is a master node, the master node receives the domain division command from the network manager through the gateway, and sends the domain division command to other target nodes except the master node; If the target node is not the master node, the target node receives the domain division command from the master node. 5. The data communication network domain division method according to any one of claims 1 to 4, claims It is characterized in that, in the case where the distance between the target node and the gateway is the smallest among the distances between the target nodes and the gateway, after the target node sets itself as a boundary point, it also includes: When the boundary point is disconnected from the old domain, a disconnection notification is sent to other target nodes except the boundary point, so that the other target nodes other than the boundary point re-determine the boundary. point. 6. A data communication network domain dividing device, characterized in that it includes: A receiving unit, configured to receive a domain division command, where the domain division command includes information about each target node that needs to be divided from the old domain to the new domain and the new domain identification; A judging unit, connected to the receiving unit, used to judge whether the distance between the device and the gateway of the old domain is the target node according to the network topology information of the old domain and the information of each target node. The smallest distance from the gateway; A setting unit, connected to the judgment unit, is used to set the device as a boundary point when the distance between the device and the gateway is the smallest of the distances between each target node and the gateway. 7. The data communication network domain dividing device according to claim 6, wherein the setting unit specifically includes: a distance between the device and the gateway being the distance between each target node and the gateway. In the smallest case, the network number in the IP address of the port used by the device in the new domain is set to the network number corresponding to the new domain identifier. 8. The data communication network domain dividing device according to claim 6 or 7, characterized in that the setting unit is also used to set the distance between the device and the gateway when the distance between the device and the gateway is not the distance between each target node and the gateway. In the smallest case, change the network number in the IP address of the port used by the device in the old domain to the network number corresponding to the new domain identifier. 9. The data communication network domain dividing device according to any one of claims 6 to 8, characterized in that the receiving unit specifically includes: claims The first receiving subunit is configured to receive the domain division command from the network manager through the gateway when the device is a master node, and send the domain division command to other targets except the master node. node; The second receiving subunit is configured to receive the domain division command from the master node when the device is not the master node. 10. The data communication network domain dividing device according to any one of claims 6 to 9, further comprising: A sending unit, connected to the setting unit, configured to send a disconnection notification to other target nodes except the boundary point when the boundary point is disconnected from the old domain, so that the Other target nodes other than the boundary point re-determine boundary points. 11. A data communication network domain division system, characterized in that it includes: a network manager, a gateway and at least one node device; including information on each target node device that needs to be divided from the old domain to the new domain and the new domain identifier. ; The node equipment adopts the data communication network domain dividing device described in any one of claims 6 to 10; The gateway is connected to the network manager, and is used to receive the domain division command sent by the network manager, and forward the domain division command to the node device.