JP5433549B2 - Communication system and communication method - Google Patents

Description

  The present invention relates to a communication system and a communication method, and in particular, in a communication system, automatically assigns each business assignment and takeover as a node is added to or deleted from the communication system. The present invention relates to a preferred communication system and method.

  In the conventional communication technology, it is known that each business assignment and takeover is automatically set in consideration of the load of each node in the communication system with the addition / deletion of the node in the communication system. .

  In Patent Document 1, the nodes themselves act autonomously and cooperatively so as to smooth the load of the entire network according to the load of network resources and the failure status of each network element constituting the network. It is described as to do. However, when a new network element is added to the network, the added network element itself determines the system element to be moved and the source network element. If the network element is deleted from the network, it is deleted. The network element itself determines a moving system element and a destination network element, and moves the system element.

Japanese Patent Laid-Open No. 7-250068

  However, in the background art, the initial setting of the means cannot be automatically performed for the newly added network element, and when the addition is performed, the initial setting takes time and an error in the initial setting occurs. Cause problems. In addition, the communication service may be stopped at the initial setting.

  In addition, when deleting a network element due to a failure or lifetime of the network element, the system element to be deleted and the destination network element to be moved are determined, and the system element is moved. The problem is whether processing is performed accurately and efficiently.

  Therefore, the present invention provides a communication system that includes a plurality of nodes that can communicate in both directions connected via a network, and that performs a plurality of tasks at the same time. When the node is faulty or malfunctioning, as the node is added or deleted, the node group judges the load distribution of the business from the business operation status of the entire system, and has the server authority from the node group The node having the server authority determines the node, and automatically installs the initial means, determines the assignment and control of the takeover, and controls the communication system without changing the existing system. Addition or replacement is possible without any harmful effects, and the problem is solved.

  In order to achieve the above object, according to the present invention, a plurality of nodes connected via a network and capable of two-way communication are simultaneously performing a plurality of tasks. As a result, at least one node of the node group determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority becomes the node group. A node that determines the business takeover source node from the business operation status of each included node, determines the business assignment for the business takeover source node and the node to be added, and adds from the business takeover source node It is characterized by being able to take over business.

  In order to achieve the above object, according to the present invention, a plurality of nodes connected via a network and capable of two-way communication simultaneously perform a plurality of tasks, and a node group including the plurality of nodes With the deletion of the node, at least one node of the node group determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority is the node Determine the business takeover destination node from the business operation status of each node included in the group, determine the business assignment for the business takeover destination node and the node to be deleted, and take over the business from the node to be deleted It is characterized in that the work is taken over by the destination node.

  According to the present invention, each node in the node group includes status information transmission means, determination information transmission means, control information transmission means, information reception means, status information management means, determination means, remote installation means, remote uninstallation means, business It represents the communication system in which the allocation unit, the business takeover unit, the installation unit, and the uninstallation unit are mounted.

The above means will be specifically described. The status information transmission means transmits information about its own node and the entire system to the network. The decision information transmission means transmits decision information including the selected node name and the name of the own node when the own node gives the server authority.
The control information transmission means transmits installation information, uninstallation information, and current job assignment instructions as control information. The information receiving means receives state information, determination information, and control information transmitted by other nodes and the own node, respectively. The state information management means manages information of its own node and the entire system. The determining means determines a node having server authority to give an instruction to a newly added node in consideration of the operation status of the entire system. In addition, a suspicious node in the system is found, and a node having server authority for determining whether or not to execute deletion is also determined. Further, the node having the server authority selects and determines the business takeover source accompanying the addition of the node or the business takeover destination accompanying the deletion of the node by this means. The remote installation or remote uninstallation means transmits an instruction to install or uninstall the means or business to the target node. The installation or uninstallation means accepts an installation or uninstallation instruction from a node having server authority, and installs or uninstalls the means or business in its own node according to the instruction. The business assignment or business takeover means assigns or takes over the business of the target node to another node.

  The node newly added to the communication system has the state information transmission unit and the installation unit already mounted, and does not require initial setting when participating in the communication system.

  When the newly added node is connected to the communication system, the state information transmitting means transmits a HELLO packet, which is ID information of the own node, to the node group that it is connected to the network. Notice.

  The node group in the communication system grasps the operation status of the operation of the communication system from the state information management means, and other active nodes that have the server authority to assign the operation for the newly added node. It is determined by the determining means.

  The node to which the server authority is given receives a HELLO packet that is ID information transmitted from the newly added node, and for the newly added target node, the remote installation means Instruct the initial means and installation of business.

  The newly added node receives the installation instruction from the installation unit and installs the unit and the business.

  After the installation of the newly added node, the node having the server authority is assigned to the newly added node by the business assignment means from the operating state of the communication system. Allocate the business you are doing.

  When the business is assigned to the newly added node, the business of the other node that has been performing the business until then is transferred to the newly added node by the business handover means. Make it.

  The node group in the communication system monitors the state of the communication system while exchanging information of the entire communication system by the state information transmission unit and the state information management unit, and other nodes scheduled to be deleted A node whose behavior is unclear, such as information exchange communication being interrupted by comparing the status with the node, determines that the target node should be deleted by the determining means, and automatically deletes the node by the remote uninstalling means Is possible.

  The node group in the communication system determines a node having the server authority to perform the deletion by the determining means from the business operation status of the communication system.

  The node to which the server authority is given determines the node to be deleted, determines the load distribution from the business operation status by the business assignment means, and assigns the business of the node to be deleted to another node.

  When the task of the node to be deleted is assigned to the other node, the node having the server authority causes the other node to take over the task by the task takeover means of the node to be deleted.

  After taking over the business, the node to be deleted receives the uninstall instruction from the remote uninstall unit from the node having the server authority, and uninstalls the unit and business from the uninstall unit.

  In the invention of claim 6, a plurality of nodes that can be communicated in both directions connected via a network perform a plurality of tasks simultaneously, and in the node group composed of the plurality of nodes, with the addition of the nodes , At least one node in the node group determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority is included in each node included in the node group. The business takeover source node is determined from the business operation status, the business assignment is determined for the business takeover source node and the node to be added, and the business is transferred from the business takeover source node to the node to be added. It is invention of the communication method in a communication system characterized by the above-mentioned.

  According to the ninth aspect of the present invention, a plurality of nodes connected via a network and capable of two-way communication simultaneously perform a plurality of tasks, and in the node group including the plurality of nodes, the node is deleted. , At least one node in the node group determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority is included in each node included in the node group. The business takeover node is determined from the business operation status of the business, the business assignment is determined for the business takeover destination node and the node to be deleted, and the business is transferred from the node to be deleted to the business takeover destination node. It is invention of the communication method in a communication system characterized by the above-mentioned.

  In a local area network to which a plurality of nodes are connected and a communication system that enables communication between the plurality of nodes, all nodes grasp the state of the entire system, and perform initial settings for addition and deletion of nodes. Not necessary, the entire system judges the situation, determines the server authority node, and enables the initial setting of the means and the assignment / takeover of the task to the target node.

  As a result, the efficiency of expansion / reduction / replacement can be improved, and errors due to user intervention can be reduced.

  In addition, it is possible to extend and reconstruct nodes and networks without affecting business as a whole without any interruption.

It is a figure which shows the communication operation of the best embodiment which concerns on this invention. It is a figure showing the means and control flow which a communication node has. It is a figure which shows the information which a communication node transmits. It is a figure showing the state management content which a communication node has. It is a flowchart which determines the node of a server authority. It is a flowchart showing the operation | movement of business taking over. It is a figure which shows the communication operation | movement in the case of deleting a node. FIG. 10 is a flowchart in which a node having server authority selects and determines a business takeover source associated with addition of a node. FIG. 11 is a flowchart in which a node having server authority selects and determines a business takeover destination associated with node deletion.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a communication flow for node addition processing according to the present invention.

  In FIG. 1, a plurality of nodes A, B, and C (nodes 11 to 13, respectively) are connected to the network 1, and the nodes 11 to 13 perform communication such as transmission / reception with each other, and execute business numbers 1, 2, and 3 Communication system. This business number represents the type of business, and the business is executed asynchronously and independently for each node. A node newly added to the network 1 is referred to as a node D (node 14).

  The nodes 11 to 13 that are already connected to the network 1 and are in communication (execution of business numbers 1, 2, and 3) are hereinafter collectively referred to as existing nodes in the document. The node 14 is hereinafter referred to as an additional node in the document. Although not shown, it is assumed that any number of existing nodes can be connected to the network 1. Also, it is assumed that there may be a plurality of networks connected to existing nodes.

  Existing nodes (nodes 11-13) have means 101-112. The additional node (node 14) includes means 101, 104, 105, and 111. The means 101 to 112 will be described with reference to FIG. 2 showing a configuration diagram of the existing node.

  FIG. 2 is a block diagram showing the means and control flow of the existing nodes (nodes 11 to 13).

  In FIG. 2, the existing nodes (nodes 11 to 13) have state information management means 105 for storing and managing the states of the own node and other nodes, and the state information management means 105 is periodically updated by the own node and other nodes. The status information transmission means 101 for transmitting the status information 31 on the network 1 as status information 31 is provided. Details of the state information 31 will be described with reference to FIG.

  Further, the existing nodes (nodes 11 to 13) have a determination unit 106 that selects and determines one of the existing nodes in order to give server authority to the existing nodes.

  In addition, when the server authority is given, the determination unit 106 determines allocation of communication work to an existing node.

  The determination unit 106 includes a determination information transmission unit 102 that transmits the determination items of the own node as the determination information 32 on the network 1. Details of the determination information 32 will be described with reference to FIG.

  In addition, the existing nodes (nodes 11 to 13) have remote installation means 107 for instructing other nodes to install tasks and means, and remote uninstallers for instructing other nodes to uninstall tasks and means. Installation means 108 is provided.

  Further, the existing nodes (nodes 11 to 13) have a task assignment unit 109 that assigns tasks to other nodes.

  The remote installation unit 107, the remote uninstallation unit 108, and the task assignment unit 109 respectively send control information 33 to the network 1 as installation information, uninstallation information, and current job assignment instructions as control information 33. Have

  The control information 33 has a flag for determining whether the information is from the remote installation unit 107, the remote uninstallation unit 108, and the business assignment unit 109. Details of the control information 33 will be described with reference to FIG.

  In addition, the existing nodes (nodes 11 to 13) have a business takeover means 110 that takes over the business from other nodes or takes over the business undertaken by the own node to other nodes.

  The business takeover means 110 transmits, as control information 33, information on the business undertaken by its own node to the network 1 when the business undertaken by its own node is taken over by another node.

  Further, the existing nodes (nodes 11 to 13) have information receiving means 104 for receiving the state information 31, the determination information 32, and the control information 33 transmitted from other nodes and the own node, respectively.

  Further, the existing nodes (nodes 11 to 13) have an installation unit 111 that installs business and means to the own node. In addition, an uninstall unit 112 that uninstalls the task and the unit from the own node is included.

  FIG. 3 is a diagram illustrating the contents of the state information 31, the determination information 32, and the control information 33.

  In FIG. 3, the source node name 301 at the head of each of the state information 31, the determination information 32, and the control information 33 is the name of the node (transmission source node) that transmitted the state information 31, the determination information 32, and the control information 33. Indicates.

  In the state information 31, the node state information 302 indicates the states of the own node and other nodes in which the transmission source node stores and manages the state in the own node.

  The node status information 302 is present for the number of managed nodes and the number of tasks handled by each managed node.

  The node status information 302 includes a node name 303, an operation time 304, a CPU usage rate 305, a business number 306, and a business contract rate 307.

  The node name 303 indicates the name of a node managed by the transmission source node. The node name managed by the transmission source node includes the name of the transmission source node.

  The operation time 304 indicates the operation time of the node managed by the transmission source node.

  The CPU usage rate 305 indicates the CPU usage rate of the node managed by the transmission source node.

  The business number 306 indicates a business number undertaken by a node managed by the transmission source node.

  The work contract rate 307 indicates a contract rate indicating how much work is undertaken in the communication system for the work undertaken by the node managed by the transmission source node.

  For example, the node 11 in FIG. 1 has a work number 1 of 10% (contract rate 10%), the node 12 has a work number 1 work 80% (contract rate 80%), and the node 13 has a work number 1 work. If the contract is 10% (contract rate 10%), this means that the entire communication system is contracted for business 1 (contract rate 100%).

  If the entire communication system is not contracted, the contract rate is 0% for the entire communication system.

  In the decision information 32, a decision node name 311 indicates a node name selected when the transmission source node gives server authority.

  In the control information 33, an information flag 321 indicates a flag indicating what information the control information is.

  In the control information 33, the control content information 322 differs in the information included depending on the flag of the information flag 321.

  For example, when the value of the information flag 321 is 1, installation data 325 is included, when 2, the uninstall data 326 is included, when 3, the takeover node name 327 is included, and when 4, the business data is included. 328 is included.

  In the control content information 322, the target node name 323 indicates the name of a node to be controlled.

  In the control content information 322, a control flag 324 represents a flag used for information exchange. For example, when the information to be transmitted is a request, the value of the control flag 324 is set to 1, and the case of the response is set to 2.

  In the control content information 322, the installation data 325 indicates data necessary for installing a task or means for the target node.

  In the control content information 322, uninstall data 326 indicates data necessary for uninstalling a task or means for the target node.

  In the control content information 322, the takeover node name 327 indicates the name of a node that takes over the business.

  In the control content information 322, a business number 306 indicates a business number to be taken over.

  In the control content information 322, the work contract rate 307 indicates a ratio of how much of the target work is taken over by the entire system when taking over the work.

  In the control content information 322, business data 328 indicates data necessary for taking over the current business content to the target node.

  FIG. 4 shows the state management content 400 for managing the current state of other nodes and the own node in the state information management means 105.

  4, the node name 303, the operation time 304, the CPU usage rate 305, the business number 306, and the business contract rate 307 are respectively the node name 303, the operation time 304, the CPU usage rate 305, the business number 306, and the business contract. It represents the same meaning as the rate 307.

  The existing nodes (nodes 11 to 13) receive the state information 31 and update the content of the state management content 400.

  In the status management content 400, a server authority flag 401 is a flag indicating which node currently has authority as a server. In the example of FIG. 4, it is indicated that the node B whose server authority flag 401 is 1 currently has the server authority.

  The existing nodes (nodes 11 to 13) receive the decision information 32 and update the contents of the state management contents 400.

  Next, an outline of processing for adding a new node (node 14) to the communication system will be described with reference to FIG.

  In FIG. 1, when a new node (node 14) is connected to the network 1, it first transmits status information 31 into the network 1.

  In the state information 31 that the new node (node 14) transmits first, “source node name 301” includes “node D”.

  Since the new node (node 14) has not yet participated in the communication, the status information 31 cannot be received from the existing nodes (nodes 11 to 13).

  Therefore, the node state information 302 in the state information 31 transmitted first by the new node (node 14) contains only information of the own node.

  The state information 31 transmitted first by the new node (node 14) is “node D” as the node name 303, the elapsed time since the start of the new node (node 14) at the operating time 304, and the new CPU usage rate 305. The current CPU usage rate, job number 306, and job contract rate 307 of the node (node 14) are all zero.

  The existing node (nodes 11 to 13) receives the state information 31 transmitted first by the new node (node 14) (process 51).

  The existing nodes (nodes 11 to 13) transmit the status information 31 to the network 1 by using the process 51 as a trigger, and update the contents of the status management contents 400 by receiving them (process 52).

  Each of the existing nodes (nodes 11 to 13) refers to the state management content 400 in the own node, selects a node having server authority to give an instruction for installation to the new node (node 14), and determines information 32 is transmitted into the network 1.

  The existing nodes (nodes 11 to 13) each receive the determination information 32, and the node having the determined node name is determined as a node having server authority. FIG. 1 shows an example in which node C (node 13) has server authority (process 53).

  Details of the processing 53 will be described in the determination processing 500 of FIG.

  Next, the node C having the server authority (node 13) installs means and business for the new node (node 14) (process 54).

  The node C (node 13) transmits control information 33 from the remote installation means 107 to the new node (node 14). This control information 33 includes installation data 325.

  The new node (node 14) receives the control information 33 including the installation data 325, and installs the means 102, 103, 106 to 110, and 112 in its own node by the installation means 111.

  Also, the new node (node 14) receives the control information 33 including the installation data 325, and installs the operations 1 to 3 on its own node by the installation unit 111.

  Next, the node C (node 13) selects and decides the takeover source node to take over the business to the new node (node 14), assigns the business to the new node (node 14), and takes over the business to the takeover source node ( Process 55). Details of the processing 55 will be described in the determination processing 800 of FIG.

  The node C (node 13) transmits control information 33 from the task assignment unit 109 to the new node (node 14), which is the takeover destination node, and the takeover source node, which takes over the task.

  The control information 33 includes the target node name 323 and the takeover node name 327 determined by the determination process 800.

  FIG. 1 shows an example in which node A (node 11) is a node that can take over the business.

  The business takeover source node A (node 11) receives the control information 33 including the takeover node name 327 and takes over the business to the new node (node 14) by the business takeover means 110.

  The business takeover source node A (node 11) transmits the control information 33 from the business takeover means 110. This control information 33 includes business data 328.

  The new node (node 14) receives the control information 33 including the business data 328 and executes the business handed over to the own node by the business hand-over means 110.

  Details of the processing 55 will be described in the takeover processing 600 of FIG.

  FIG. 5 is a flow of an algorithm for selecting and determining one node that gives server authority among existing nodes.

  In FIG. 5, an area for storing the CPU usage rate, node name, and operation time is secured in the internal memory, and the initial values are “100%”, “− (no name)”, and “maximum” (can be set in the internal memory). 501 to set the value.

  Next, the state management content 400 in the own node is referred to for each record, and compared with the value in the internal storage area. If all the records have been referred to, the process is terminated 502.

  When the server authority flag 401 of the target record is ON, the process proceeds to 503 for referring to the next record.

  When the server authority flag 401 of the target record is OFF, the process proceeds to the comparison process 504.

  Next, when the CPU usage rate of the target record and the CPU usage rate of the internal storage area are the same, the process proceeds to the comparison process 507, and otherwise, the process proceeds to the comparison process 505.

  In process 505, when the CPU usage rate of the internal storage area is smaller than the CPU usage rate of the target record, the process shifts to the next record reference processing.

  If the CPU usage rate of the internal storage area is larger than the CPU usage rate of the target record, the process proceeds to processing 506.

  In process 506, the CPU usage rate, node name, and operating time in the target record are set to the CPU usage rate, node name, and operating time in the internal storage, respectively.

  If the operation time of the internal storage area is shorter than the operation time of the target record in the process 507, the process proceeds to the next record reference process.

  If the operation time of the internal storage area is longer than the operation time of the target record, the process proceeds to processing 506.

  After all the records of the state management content 400 are referred to, the node name set in the internal storage area is used as the determined node name 311 of the determined information 32, and the determined information 32 is transmitted to the network 1, and the determined node name Is determined as a node having server authority (process 508).

  FIG. 6 is a flowchart of a processing algorithm for causing another node to take over a task during communication or taking over from another node.

  In FIG. 6, it is assumed that a node that takes over the work that the node has undertaken to another node is a takeover source node, and a node that takes over the work from another node is a takeover destination node.

  In the takeover source node of FIG. 6, the control information 33 is received 601 from a node having server authority.

  The control information 33 includes a target node name 323, a takeover node name 327, a business number 306, and a business contract rate 307.

  A business number 306 is acquired from the received control information 33. This business number becomes the business number 306 to be taken over.

  In addition, the business contract rate 307 is acquired from the received control information 33. This ratio is the business contract rate 307 of the target business to be taken over.

  For example, when the current business contract rate of the business number 1 of the takeover source node is 80%, the business number 306 included in the control information 33 is 1, and the business contract rate 307 is 40%, the takeover source node is This means that 40% of the work with work number 1 currently undertaken can be taken over to the takeover destination node.

  Next, a task to be taken over is temporarily stopped 602.

  Next, the process of transmitting the business data to the takeover destination node is performed, and the process of transmitting the business data for the designated business contract rate 307 is repeated 603.

  Here, the business data forms a table for each business in the existing node, exchanges information with each other in the communication system, and updates the table in real time.

  The current business data held in the own node is set in the business data 328 of the control information 33 and transmitted to the takeover destination node 604.

  After the transmission process is repeated for the last designated business contract rate 307 minutes, the business that has been temporarily stopped in process 602 is resumed 605.

  Here, when all the tasks that the takeover source node has undertaken are taken over to the takeover destination node, the processing 605 is not performed.

  For example, when the current business contract rate of the business number 2 of the takeover source node is 20%, the business number 306 included in the control information 33 is 2, and the business contract rate 307 is 20%, the takeover source node is If 20% of the work of the work number 2 currently undertaken is handed over to the takeover destination node, it means that it is not necessary to resume the work number 2 thereafter at the takeover source node.

  Next, the takeover destination node in FIG. 6 will be described.

  In the takeover destination node of FIG. 6, control information 33 is received 611 from a node having server authority.

  The control information 33 includes a target node name 323, a takeover node name 327, a business number 306, and a business contract rate 307.

  A business number 306 is acquired from the received control information 33. This business number becomes the business number 306 to be taken over.

  In addition, the business contract rate 307 is acquired from the received control information 33. This ratio becomes the business contract rate 307 of the target business to be taken over.

  Next, business data is received from the takeover source node, and the processing is repeated 612 until business data is received for the designated business contract rate 307.

  The control information 33 including the business data 328 is received 613 from the takeover source node.

  In the control information 33 received in the process 613, the business data 328 is registered 614 in the new node.

  After the reception process is repeated for the last designated business contract rate of 307 minutes, the handed over business is started 615.

  FIG. 7 is a diagram showing a communication flow for the node deletion processing.

  FIG. 7 shows an example in which the nodes 11 to 14 are in a communication state as an initial state, and then the node 14 is deleted from communication by user designation.

  Hereinafter, a node to be deleted from communication in a document is referred to as a deletion node.

  In FIG. 7, the existing nodes (nodes 11 to 14) for communication receive an instruction to delete the node D (node 14) from the user.

  The existing nodes (nodes 11 to 14) transmit the status information 31 to the network 1 using the instruction as a trigger, and update the content of the status management content 400 by receiving them (process 71).

  Next, the existing nodes (nodes 11 to 13) excluding the deletion node (node 14) each refer to the state management content 400 in the own node and instruct the deletion node (node 14) such as uninstallation. A node having server authority is selected, and decision information 32 is transmitted into the network 1.

  The existing nodes (nodes 11 to 13) each receive the determination information 32 and determine a node having server authority. FIG. 7 shows an example in which node C (node 13) has server authority (process 53).

  The process 53 is the same as the determination process 500 in FIG.

  Next, a description will be given of a process in which the node C having the server authority (node 13) performs the task assignment and takeover instructions, means, and the task uninstall for the deletion node (node 14) (step 72).

  The node C (node 13) selects and decides the takeover destination node to take over the work of the deletion node (node 14), assigns the work to the takeover destination node, and takes over the work to the deletion node (node 14) (processing) 72). Details of the processing 72 will be described in the determination processing 900 of FIG.

  The node C (node 13) transmits control information 33 from the task assignment unit 109 to the deletion node (node 14), which is the takeover source node, and the takeover destination node, which can take over the task.

  The control information 33 includes the takeover node name 327 and the target node name 323 determined by the determination process 900.

  FIG. 7 shows an example in which node B (node 12) is a business takeover destination node.

  The deletion node (node 14) receives the control information 33 including the takeover node name 327, and takes over the business to node B (node 12) by the business takeover means 110.

  The deletion node (node 14) transmits the control information 33 from the business takeover means 110 to the node B (node 12). This control information 33 includes business data 328.

  The business takeover node B (node 12) receives the control information 33 including the business data 328, and executes the business handed over from the business takeover means 110 to its own node.

  Next, the node C (node 13) transmits the control information 33 from the remote uninstaller 108 to the deletion node (node 14) that is the business takeover source. This control information 33 includes uninstall data 326.

  The deletion node (node 14) receives the control information 33 including the uninstall data 326, and uninstalls the means 102, 103, 106 to 110 and 112 from its own node by the uninstall means 112.

  The deletion node (node 14) receives the control information 33 including the uninstall data 326, and uninstalls the operations 1 to 3 from its own node by the uninstall unit 112 (process 73).

  FIG. 8 is a flowchart of an algorithm in which a node having server authority selects and determines a business takeover source accompanying the addition of a node.

  In FIG. 8, an area for storing the CPU usage rate, node name, and operation time is secured in the internal memory, and the initial values are “0%”, “− (no name)”, “(can be set in the internal memory) respectively. Value "is set 801.

  Next, the state management content 400 in the own node is referred to for each record, and compared with the value in the internal storage area. If all the records have been referred to, the process ends 802.

  When the server authority flag 401 of the target record is ON, the process proceeds to the next record reference process 803.

  When the server authority flag 401 of the target record is OFF, the process proceeds to the comparison process 804.

  Next, when the CPU usage rate of the target record is the same as the CPU usage rate of the internal storage area, the process proceeds to the comparison process 807, and otherwise, the process proceeds to the comparison process 805.

  In process 805, when the CPU usage rate of the internal storage area is larger than the CPU usage rate of the target record, the process shifts to the next record reference processing.

  If the CPU usage rate of the internal storage area is smaller than the CPU usage rate of the target record, the processing shifts to step 806.

  In process 806, the CPU usage rate, node name, and operating time in the target record are set to the CPU usage rate, node name, and operating time of the internal storage, respectively.

  If the operation time of the internal storage area is greater than the operation time of the target record in the process 807, the process proceeds to the next record reference process.

  If the operation time of the internal storage area is shorter than the operation time of the target record, the process proceeds to processing 806.

  After all the records of the state management content 400 have been referenced, the control information 33 including the takeover node name and other control information is set as the target node name 323 of the control information 33 using the node name set in the internal storage area. Is transmitted to the takeover source node and the takeover destination node (process 55).

  FIG. 9 is a flowchart of an algorithm in which a node having server authority selects and determines a business takeover destination associated with node deletion.

  In FIG. 9, an area for storing the CPU usage rate, node name, and operation time is secured in the internal memory, and the initial values are “100%”, “− (no name)”, and “maximum (which can be set in the internal memory), respectively. Value 901 is set 901.

  Next, the state management content 400 in the own node is referred to for each record, and compared with the value in the internal storage area. When all the records have been referred to, the processing is terminated 902.

  If the server authority flag 401 of the target record is ON, the process proceeds to the next record reference process 903.

  When the server authority flag 401 of the target record is OFF, the process proceeds to the comparison process 904.

  Next, if the CPU usage rate of the target record is the same as the CPU usage rate of the internal storage area, the process proceeds to the comparison process 907, and if not, the process proceeds to the comparison process 905.

  In process 905, when the CPU usage rate of the internal storage area is smaller than the CPU usage rate of the target record, the process shifts to the next record reference processing.

  If the CPU usage rate of the internal storage area is larger than the CPU usage rate of the target record, the processing shifts to step 906.

  In process 906, the CPU usage rate, node name, and operating time in the target record are set to the CPU usage rate, node name, and operating time in the internal storage, respectively.

  If the operation time of the internal storage area is shorter than the operation time of the target record in the process 907, the process proceeds to the next record reference process.

  If the operation time of the internal storage area is longer than the operation time of the target record, the process proceeds to process 906.

  After the reference of all the records of the state management content 400 is finished, the control information 33 including the target node name and other control information is set with the node name set in the internal storage area as the takeover node name 327 of the control information 33. Is transmitted to the takeover source node and the takeover destination node (process 72).

  The node refers to other systems and devices such as servers, clients, hubs, routers, and access points.

  Further, the present invention is not limited to the embodiments described with reference to FIGS. 1 to 9, and various modifications can be made without departing from the scope of the invention.

  The present invention relates to a communication parallel operation system that acquires data of an existing local area network and transfers it to a new local area network in real time in a transfer device connected to the existing local area network and the new local area network.

  Also, communication that can evaluate the health of any node in the new local area network by acquiring and comparing response data of any node in the existing local area network and any node in the new local area network. It relates to a parallel operation system.

31 State information 32 Determination information 33 Control information 101 State information transmission means 102 Determination information transmission means 103 Control information transmission means 104 Information reception means 105 State information management means 106 Determination means 107 Remote installation means 108 Remote uninstallation means 109 Business allocation means 110 Business takeover means 111 Installation means 112 Uninstallation means 301 Source node name 302 Node state information 303 Node name 304 Operating time 305 CPU usage rate 306 Business number 307 Business contract rate 311 Determined node name 321 Information flag 322 Control content information 323 Target node Name 324 Control flag 325 Installation data 326 Uninstall data 327 Takeover node name 328 Business data 401 Server authority flag

Claims (9)

  A plurality of nodes connected via a network and capable of two-way communication simultaneously perform a plurality of tasks. In the node group composed of the plurality of nodes, at least one of the node groups is added along with the addition of the node. One node determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority determines a business operation status from the business operation status of each node included in the node group. A handover source node of the business, a business assignment to the business takeover source node and the node to be added is determined, and the business is transferred from the business takeover source node to the node to be added. system.   At least one node of the node group determines a node having server authority to install the initial means of the added node from the business operation status of each node included in the node group. The communication system according to claim 1.   The communication system according to claim 2, wherein the node having the server authority installs the initial means of the added node.   A plurality of nodes that can communicate in both directions connected via a network perform a plurality of tasks at the same time, and in the node group composed of the plurality of nodes, at least one of the node groups in accordance with the deletion of the node One node determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority determines a business operation status from the business operation status of each node included in the node group. A handover destination node of the business, a business assignment is determined for the business takeover destination node and the node to be deleted, and the business is transferred from the node to be deleted to the business takeover destination node system.   The node of the node group transmits status information transmitting means for transmitting status information of the own node and each node included in the node group, and determination information including the node name selected and determined when the own node gives server authority. Decision information transmitting means for transmitting, control information transmitting means for transmitting installation information or uninstallation information, business assignment instruction information or business takeover instruction information as control information, and the own node and each node included in the node group transmit Information receiving means for receiving state information or decision information or control information to be performed, state information managing means for managing state information of each node included in the own node and the node group, and information of each node included in the node group Select / determine a node that has server authority from the operational status or assign / takeover business A determination means for selecting and determining, a remote installation means for transmitting means and a job installation instruction to the target node, a remote uninstall means for transmitting a means and a job uninstall instruction to the target node, and the target node Assigns a task assignment instruction from the target node to another target node, a task takeover means sends a task takeover instruction from the target node to another target node, and installs the means or task on the local node according to the instructions The communication system according to claim 1, further comprising: an uninstalling unit that uninstalls the unit and the task in the own node according to the instruction.   A plurality of nodes connected via a network and capable of two-way communication simultaneously perform a plurality of tasks. In the node group composed of the plurality of nodes, at least one of the node groups is added along with the addition of the node. One node determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority determines a business operation status from the business operation status of each node included in the node group. A handover source node of the business, a business assignment to the business takeover source node and the node to be added is determined, and the business is transferred from the business takeover source node to the node to be added. Communication method in the system.   At least one node of the node group determines a node having server authority to install the initial means of the added node from the business operation status of each node included in the node group. A communication method in the communication system according to claim 6.   8. The communication method in a communication system according to claim 7, wherein the node having the server authority installs the initial means of the added node.   A plurality of nodes that can communicate in both directions connected via a network perform a plurality of tasks at the same time, and in the node group composed of the plurality of nodes, at least one of the node groups in accordance with the deletion of the node One node determines a node having server authority from the business operation status of each node included in the node group, and the node having server authority determines a business operation status from the business operation status of each node included in the node group. A handover destination node of the business, a business assignment is determined for the business takeover destination node and the node to be deleted, and the business is transferred from the node to be deleted to the business takeover destination node Communication method in the system.

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