JP4410061B2 - Communication network management system - Google Patents

Description

  The present invention relates to a network configuration management system and a state monitoring system that provide communication services.

  The communication network includes a plurality of communication devices that are multiplexed / separated and a transmission path that connects between the communication devices, a multi-layer network (called a hierarchical network), a plurality of routers, and a transmission path that connects the routers. It is constructed by a router network that is configured. Since communication is interrupted due to a failure of a transmission path or a communication device in a communication network, control such as switching to another route is generally performed when a failure is determined and a failure occurs. Conventionally, Patent Documents 1 and 2 are prior arts for determining a failure in a multi-route configuration network and switching to another route.

  Patent Document 1 defines connection information and switching destinations for each route between terminals in a multi-route configuration network, and hierarchical information and connection information for a higher-order path and route for a path, and when a failure occurs in a path or an exchange Discloses that a route to be stopped due to an influence of a failure is determined and switched to a switching destination route.

Patent Document 2 discloses providing a network monitoring system that can easily monitor the occurrence of a failure in a network environment and can easily grasp the problem of the influence range at the business level due to the occurrence of the failure by visualization on the viewer. is doing.
JP-A-6-104894 JP 2002-244939 A

  However, the prior art has the following problems.

  Japanese Patent Laid-Open No. 2004-228867 manages a line and an exchange network having a multi-route configuration, but a network configuration in which switching is dynamically performed by a routing table because a route switching destination when a failure occurs is fixedly managed. There is a problem that it is not possible to determine a stop in the network. In addition, since it is a method for managing information on the most recent transmission path and exchange path as seen from the terminal side, both the start and end information of the route, the route passes through the route when it passes through multiple exchange paths. If the entire path cannot be managed and a failure occurs in the middle path of the route, or if a failure occurs in the exchange related to the middle path, it is not possible to determine stop for the route There is a point. Furthermore, since Patent Document 1 is for determining a failure in a hierarchical network and not for determining a failure in a router network, it is necessary in advance when a router or the like is stopped in a router network due to periodic inspection or repair. However, there is a problem that the line stop cannot be avoided.

  Patent Document 2 manages routing information, logical connection information, node-specific information, etc. in an XML file format database. However, when equipment is stopped due to periodic inspections or repairs, information related to equipment stoppage is included in the routing information. Although it is necessary to include it, routing information is not used in the failure determination process, so the line stop cannot be avoided in advance. When a line stop occurs, it is quickly determined whether the cause of the stop is work or failure. It is not possible.

  The object of the present invention has been made in view of the above, and in a hierarchical network and a router network, when each route passes through a plurality of exchanges and routers, it is possible to determine a failure, and the cause of the line stop is work / failure. It is an object of the present invention to provide a communication network management system capable of quickly determining and notifying which one of the communication network management systems.

According to one aspect of the present invention, a plurality of communication facilities that multiplex / separate data, a hierarchical network that is configured in a plurality of levels by a transmission path that connects the communication facilities, and a destination address set in a packet In a communication network management system for managing a router network composed of a plurality of routers that route based on each other and a transmission path that connects the routers, a first end equipment of a transmission source and a second of reception destinations accommodated in the hierarchical network For the end equipment, the first end equipment receives the data transmitted to the second end equipment and transmits the data to the upper communication equipment from the starting end and the upper communication equipment, and receives the second A line configuration table including configuration information indicating a line terminating at a communication facility to be transmitted to an end facility, a section having the start end and the end point, and a communication configuration at the same level in the hierarchical configuration About all the sections of the upper of said sections to start and end, between said section start and section information indicating an end of the upper section between said section start and end of the upper section information and any of the normal and abnormal interval shown An umbrella table that includes an operating state indicating whether it is in a state and an abnormality cause when the operating state is abnormal, an information collection unit that collects failure information of each communication facility and each transmission path, and searches the umbrella table A section in which the communication facility of the fault collected by the information collection unit is the start or end, or a section in which the communication facility connected to the transmission path of the fault collected by the information collection unit is the start or end, and the section the identifies the lower section to the upper section, the operating state of these sections is abnormal, abnormality cause writes to be due to a failure in the umbrella table and the line configuration table Both a determination unit for outputting to an output device that the operating state of these intervals abnormality occurs due to a failure, defined section to terminate the starting end and the receiving router to transmit a router for said neighboring router, and the above start end A section table storing section information defining the first end equipment to be connected and the second end equipment to be connected to the terminal; routing information on the next router to the destination end equipment and A routing table that stores protocol information related to the protocol of the application layer from the router to the next router, and the determination unit is configured to transmit a fault in a transmission path in which the faulty communication equipment collected by the information collection unit connects between routers or routers. The section table is searched, the router related to the failure or the failure The section having the router connected to the transmission line as the start or end is determined to be abnormal, and the routing table is searched to determine whether the router related to the failure or the router connected to the transmission line related to the failure Or, it is determined that the protocol related to the route as the next router is abnormal, and the route from the first end equipment to the second end equipment is normal for each protocol based on the section information and the routing information. There is provided a communication network management system characterized by determining abnormality .

  According to the present invention, since the upper section is defined in the line configuration table and the umbrella table for the line between the first and second end facilities accommodated in the hierarchical network, no matter which section has a failure, Since the lower section with the section as the upper section can be specified, it is possible to specify all sections and line failures that are affected by the failure in the upper section, and it is possible to respond quickly to the failure.

  Before describing the embodiment of the present invention, the principle of the present invention will be described. FIG. 1 is a principle diagram. As shown in FIG. 1, the communication network management system 10 includes a plurality of communication facilities 18 # i (i = 1 to n + 1) for performing data multiplexing / separation and the communication facilities 18 # i (i = 1 to n). A router network 14 comprising a hierarchical network 12 that is hierarchically configured at a plurality of levels by a transmission path 19 that connects them, a plurality of routers 20 that perform routing based on a destination address set in a packet, and a transmission path that connects the routers 20 Manage. The communication network management system 10 includes a line configuration table 30, an umbrella table 32, an information collection unit 34, and a determination unit 36.

  The line configuration table 30 shows that the first end equipment 16 # 1 is the second end equipment 16 # 1 between the first end equipment 16 # 1 of the transmission source and the second end equipment 16 # 2 of the reception destination. A line that terminates a communication facility that receives data transmitted to the end equipment 16 # 2 and transmits the data to the upper communication equipment from the start end and the upper communication equipment and transmits the data to the second end equipment 16 # 2. Including configuration information. The umbrella table 32 is the section information indicating the start and end of the section of the hierarchical network 12 with respect to the section having the start and end, and all sections higher than the section having the communication equipment of the same level in the hierarchical structure as the start and end. And upper section information indicating the start and end of the upper section of the section. For example, the upper section of the section 18 # 1-18 # 2 is 18 # 3-18 # 4.

  The information collecting unit 34 collects failure information of each communication facility 18 # i (i = 1 to (n + 1)) and the transmission path 19. The determination unit 36 searches the umbrella table 32, and the communication connected to the transmission path of the failure collected by the information collection unit 34 or the section where the communication facility of the failure collected by the information collection unit 34 is the start or end. A section in which the facility is the start or end and a lower section having the section as an upper section are specified, and the fact that an abnormality has occurred in the operating state of these sections is output to the output device. As a result, each section and upper section of the hierarchical network 12 configured in a plurality of layers are defined in the line configuration table 30 and the umbrella table 32, so that the communication equipment 18 # i (i = 1 to (n + 1)) or transmission Even if a failure occurs on the road 19, it is possible to identify all of the failure sections due to the failure and the affected lower sections, and to respond quickly to the failure.

  FIG. 2 is a diagram showing a communication network according to the embodiment of the present invention. The communication network includes a hierarchical network 50, a router network 52, and a communication network management system 54.

  FIG. 3 is a diagram illustrating a configuration example of the hierarchical network 50, the router network 52, and the communication network management system 54. The hierarchical network 50 is a network that is hierarchically configured by a multiplexing device (MUX), a wireless device, and the like. In a hierarchical network, a path that connects the output port of the end equipment such as a personal computer and the input port of the other end equipment is set in advance, and the data sent from the output port is set in the path Is a network configuration that is multiplexed and separated to receive at the input port of the counterpart facility. Equipment constituting the hierarchical network 50 includes a multiplexing device (MUX), an exchange, a wireless device, and the like. The hierarchical network 50 includes a case where three or more communication facilities of the same level are cascade-connected, such as a relay device.

  For example, the hierarchical network 50 includes the MUX 70 # B, the wireless device 72 # C, the wireless device 72 # D, and the MUX 70 # E. In this example, lines are defined in the end equipment 60 # A to the end equipment 60 # J. The end equipment 60 # A to the end equipment 60 # J are connected to the end equipment 60 # A → MUX 70 # B → the radio 72 # C → the radio 72 # D → the MUX 70 # E → the first route of the end equipment 60 # J. It is. When MUX 70 # B and 70 # E receive data from the input port, the data is multiplexed and transmitted from the output port corresponding to the input port according to the set path. When the data is received from the input port, the MUX 70 # B and 70 # E are set. According to the path, the data is separated from the output port corresponding to the input port and transmitted. The wireless devices 72 # C and 72 # D wirelessly transmit data received from input ports to which MUXs 70 # B and 70 # E are connected, and transmit the wirelessly received data to corresponding output ports.

  The router network 52 is a network composed of a plurality of routers and a transmission path connecting the routers. For example, the network NW1 is composed of routers 80 # F, 80 # G, 80 # H, and 80 # I. Here, the network is a unit sharing a routing table. In this embodiment, even if one network shares the routing table, if the human management unit is different, such as the main branch network and the branch internal network, the inter-branch network and the branch internal network are different. It is also possible to assign the network ID.

  When receiving the IP packet, the routers 80 # F to 80 # I refer to the routing table and transmit the IP packet to the output port corresponding to the IP address set in the IP header. In this example, the line is defined between the end equipment 60 # A and the end equipment 60 # J, and the second route of the line between the end equipment 60 # A and the end equipment 60 # J is the router network 52. . As described above, the circuit between the end equipment 60 # A and the end equipment 60 # J is multi-routed by the first route passing through the hierarchical network 50 and the second route passing through the router network 52.

  FIG. 4 is a diagram illustrating a configuration example of communication equipment when the MUXs 70 # B and 70 # E have a plurality of input / output ports (channels). As shown in FIG. 4, MUX 70 # B has a plurality of input ports that accommodate end equipment 60 # A1, 60 # A2, and MUX 70 # E has a plurality of outputs that accommodate end equipment 60 # J1, 60 # J2. Has a port. CH01 in FIG. 4 is a channel that accommodates the lines of the end equipment 60 # A1 and 60 # J1, and CH02 in FIG. 4 is a channel that accommodates the lines of the end equipment 60 # A2 and 60 # J2.

  In this example, lines are defined between the end equipment 60 # A1 and the end equipment 60 # J1, and between the end equipment 60 # A2 and the end equipment 60 # J2. The first route of the line between the end equipment 60 # A1 to the end equipment 60 # J1 is the end equipment 60 # A1, MUX 70 # B, radio 72 # C, radio 72 # D, MUX 70 # E, end equipment 60 #. The first route of the line between J1, end equipment 60 # A2 to end equipment 60 # J2 is end equipment 60 # A2-> MUX 70 # B-> radio 72 # C-> radio 72 # D-> MUX 70 # E-> end 60 # J2. The second route of the line between the end equipment 60 # A1 and the end equipment 60 # J1 is the router network 52, and the second route of the line between the end equipment 60 # A2 and the end equipment 60 # J2 is the router network 52. Yes, the circuit is multi-routed.

  FIG. 5 is a diagram illustrating a configuration example of communication equipment when the radio device 72 # C has multiple directions. As shown in FIG. 5, the wireless device 72 # C transmits / receives data to / from the wireless device 72 # D and the wireless device 72 # K. In this example, the line is between end equipment 60 # A1 to end equipment 60 # J1, between end equipment 60 # A2 to end equipment 60 # J2, between end equipment 60 # A1 to end equipment 60 # M1, and to end equipment 60 #. Defined between A2 and end equipment 60 # M2. The first route of the line between the end equipment 60 # A1 to the end equipment 60 # J1 is the end equipment 60 # A1, MUX 70 # B, radio 72 # C, radio 72 # D, MUX 70 # E, end equipment 60 #. The first route of the line between J1, end equipment 60 # A2 to end equipment 60 # J2 is end equipment 60 # A2-> MUX 70 # B-> radio 72 # C-> radio 72 # D-> MUX 70 # E-> end 60 # J2 route, the first route of the circuit between the end equipment 60 # A1 to the end equipment 60 # M1 is the end equipment 60 # A1 → MUX 70 # B → radio 72 # C → radio 72 # K → MUX 70 # L → Route of end equipment 60 # M1, first route of circuit between end equipment 60 # A2 to end equipment 60 # M2 is end equipment 60 # A2 → MUX 70 # B → Radio 72 # C → Radio 72 # K → MUX70 # L → end equipment 60 # M2.

  Communication equipment such that the MUX unit 70 # B, 70 # E has a plurality of input / output ports, and the radio equipment 72 # C communicates with the plurality of radio equipment 72 # D, 72 # K. Have a configuration for communicating with a plurality of communication facilities, and a configuration in which a plurality of communication facilities of the same level such as a relay device are cascade-connected. Further, the second route of the line between the end equipment 60 # A1 and the end equipment 60 # J1 is the router network 52, and the second route of the line between the end equipment 60 # A2 and the end equipment 60 # J2 is the router network 52. The circuit is multi-routed.

  As shown in FIG. 3, the communication network management system 54 includes a processing device 90, a display device 92, and a printing device 94. The processing device 90 includes a configuration management unit 100, an information collection / distribution unit 102, a state determination unit 104, and a relational database 106. The processing device 90 includes a CPU, a main memory, and the like. The configuration management unit 100 stores data in the umbrella table 120, section table 122, routing table 124, line configuration table 126, and work information table 128 for the hierarchical network 50.

  Umbrella table 120 is a communication facility at the transmission side start end and reception end terminal of each communication facility at the same level (the same transmission speed and the same level as the communication partner) in the hierarchical structure. FIG. 11 is a table that stores the transmission equipment at the transmitting end and the receiving end of the upper section of the level one level above the section, the operating state of the section, and the cause of the abnormality when the operating state is abnormal.

  FIG. 6 is a diagram showing a configuration example of the umbrella table 120 of the hierarchical network 50 shown in FIG. In the hierarchical network 50 shown in FIG. 6, there is no upper section, the section operating state is normal, there is no cause of abnormality for the section where the transmitting end is the wireless device 72 # C and the receiving end is the wireless device 72 # D. For the section where the start end is MUX70 # B and the end is MUX70 # E, the start end of the upper section is the radio 72 # C, the end is the radio 72 # D, the operation state of the section is normal, no cause of abnormality, the start is the end equipment For the section having the end facility 60 # J at 60 # A and the end equipment 60 # J, information on the start end of the upper section is MUX70 # B, the end is MUX70 # E, the operation state of the section is normal, and there is no cause of abnormality is stored. The dashed arrows in FIG. 6 represent the vertical relationship between the sections having a hierarchical relationship. When three or more communication facilities of the same level are cascade-connected, the start and end sections are defined by the number of (number of communication facilities-1).

  FIG. 7 is a diagram showing a configuration example of the umbrella table 120 of the hierarchical network 50 shown in FIG. In the hierarchical network 50 shown in FIG. 4, since the MUXs 70 # B and 70 # E have a plurality of input / output ports (channels), the umbrella table 120 has a MUX 70 # starting point between the MUXs 70 # B and 70 # E. The input port (CH01) that accommodates the end equipment 60 # A1 of B, the section that is the output port (CH01) that accommodates the end equipment 60 # J1 whose end is MUX70 # E, and the end equipment 60 # that is the start of the MUX70 # B An upper port that is defined for each channel, such as an input port (CH02) that accommodates A2, and an output port (CH02) that accommodates an end facility 60 # J2 whose termination is MUX70 # E, and is also accommodated for an upper section The channel for the leg is defined. Similarly, when the communication facility has a plurality of input / output ports, a section is defined for each input / output port.

  FIG. 8 is a diagram showing a configuration example of the umbrella table 120 of the hierarchical network 50 shown in FIG. In the hierarchical network 50 shown in FIG. 5, since the radio 72 # C communicates with multidirectional radios like the radios 72 # D and 72 # K, as shown in FIG. The umbrella table 120 defines a section where 72 # C, the end point is the wireless device 72 # D, and a start point is the wireless device 72 # C and the end point is the wireless device 72 # K. Further, when the path is set so that the data of the channel CH01 for the end equipment 60 # A1 accommodated in the MUX 70 # B is received by the end equipment 60 # M1 and the end equipment 60 # J1, the MUX 70 # B A section is defined in which the channel CH01 is the start and the MUXs 70 # L and 70 # E are the ends. The channel CH02 for the end equipment 60 # A2 accommodated by the MUX 70 # B is similarly defined.

  The section table 122 is a table for storing information about sections connecting routers in the router network 52. For each section, a network ID that is a network identifier and a section that is a section between adjacent facilities in the network. Stores the transmission-side start and reception-side terminations, the connection destination equipment when the start-end equipment and termination equipment are connected to equipment outside the network, the operating status of the section, and the cause of the abnormality when the section becomes abnormal. It is a table.

  FIG. 9 is a diagram showing a configuration example of the section table 122 for the router network 52 shown in FIG. For example, for a section whose start is router 80 # F and end is 80 # G, the network ID of the network NW1 in which the section is accommodated, the start of off-network connection is equipment 60 # A, the operating state of the section is normal, and the cause of the abnormality None is stored. Further, for a section whose start end is the router 80 # F and whose end is 80 # I, the network ID of the network NW1 in which the section is accommodated, the start end of the off-network connection is the end equipment 60 # A, the end is the end equipment 60 # J, Stores whether the section is operating normally or not.

  The line configuration table 126 indicates the line connecting between the end equipments in the case of the start and end equipments of the line, the identification information of the route, the order viewed from the start side of the equipment / section / network constituting the route, and the section. It is a table for storing the identifiers in the case of section start equipment and terminal equipment, equipment and router networks, the operating status of the equipment / section / network constituting the route, and the cause of an abnormality when an abnormal condition occurs.

  FIG. 10 is a diagram showing a configuration example of the line configuration table 126 for the network configured by the communication facility shown in FIG. For the line having the end facility 60 # A as the start and the end facility 60 # J as the end, a route 1 via the hierarchical network 50 and a route 2 via the router network 52 are provided. For route 1, the order 1 indicates that the section goes through the hierarchical network 50, the start is MUX 70 # B, the end is MUX 70 # E, the configuration is operating normally, no cause of abnormality, The network indicating that the section is routed through the router network 52, the starting end is NW1, the operating state of the configuration is normal, and the cause of abnormality is stored in the line configuration table 126. In this example, only the configuration with the sequence number 1 is registered in the route, but there is another section or network between the MUX 70 # E and the end equipment 60 # J or between the router network NW1 and the end equipment 60 # J. If there is a sequence number 2, register it as a sequence number 2, 3, 4.

  FIG. 11 is a diagram showing a configuration example of the line configuration table 126 for the network configured by the communication facility shown in FIG. In this hierarchical network 50, if the configuration is a section for the lines of the end equipment 60 # A1 and the end equipment 60 # J1 at the start and end, the start and end are CH01 and 70 # E of MUX70 # B. If the configuration of the channel is CH01 and the end equipment 60 # A2 and the end equipment 60 # J2 are the end equipment and the end equipment 60 # J2, the CH02 of the MUX70 # B and the CH02 of the 70 # E are provided. It is stored in the line configuration table 126.

  FIG. 12 is a diagram showing a configuration example of the line configuration table 126 for the network configured by the communication facility shown in FIG. In this hierarchical network 50, in addition to the line configuration table 126 of FIG. 11, the start and end are end equipment 60 # A1, end equipment 60 # M1, and the start and end are end equipment 60 # A1 and end equipment 60 # M2. The line is additionally stored in the line configuration table 126.

  The routing table 124 is a table for storing routing information for each of the routers 80 # F to 80 # I. The routing information is managed (or the routing information should be set) (the own equipment), the data destination The table that stores the equipment to be used, the equipment to which data destined for the destination equipment should be passed next, the protocol to be used, the routing method, the operating status of the section from the own equipment to the next equipment, and the cause of the abnormality when the section becomes abnormal It is. In the case of an IP network, HTTP, SMTP, FTP, POP3, etc., which are application layer procedures of the TCP / IP4 hierarchical model, are set as the protocol. Whether the routing method is static routing or dynamic routing, “STAT” is set for static routing, and the routing protocol name (RIP, RIP2, OSPF, etc.) is set for dynamic routing. Is set.

  FIG. 13 is a diagram showing an example of the routing table 124 for the router network 52 shown in FIG. As shown in FIG. 13, the destination end equipment, the next equipment, the protocol, the routing method, the operating state, and the cause of abnormality are stored in the routing table 124 with each router 80 #F to 80 #I as its own equipment. In this example, data using the HTTP protocol is transmitted through a route of router 80 # F → router 80 # G → router 80 # I, and data using the FTP protocol is transmitted from router 80 # F → router 80 # H → router 80. The route is managed for each protocol by being transmitted through the route #I.

  The work information table 128 is a table for registering a stop period and a stop purpose in advance when an equipment / section / router network is artificially stopped. A section indicating which section / network is selected, work target equipment / section / network, scheduled work start time, scheduled work end time, and work contents are stored. By registering in advance, it is possible to predict that a network or line will be stopped due to multiple operations on a route that constitutes a multi-routed network or line, and avoiding the stop by adjusting the work period That is, the suspension period can be shortened.

  FIG. 14 is a diagram illustrating an example of the work information table 128. As shown in FIG. 14, for example, when the wireless device 72 # C is stopped by periodic inspection, the classification is equipment, the work target is the wireless device 72 # C, the work start time, and the work end time are stored. Further, when the cable replacement work between the routers 80 # H to 80 # I is performed, the section is the section, the work target is the router 80 # H to 80 # I, the work start time and the work end time are stored. The In addition to the work information table 128, the facility connection information of the hierarchical network 50 can be input to the umbrella table 120 and the line configuration table 126, the facility connection information to the section table 122 of the router network 52, and the routing information to the routing table 124 can be input. Yes.

  For example, a section table and a routing table are input as new construction information of the network NW1, and are managed as temporary tables until the construction is completed. When the new construction is completed, the two tables are the section table 122 and the routing table of the relational database 106. 124. The routing table 124 can be distributed from the information collection / distribution unit 102 to the router 80 # i (i = F to I) in response to an instruction from the operator or a predetermined opportunity.

  The information collection / distribution unit 102 acquires (I) communication facility, failure information of a transmission line connected to the communication facility from each communication facility constituting the hierarchical network 50 and the router network 52, Setting an abnormality and the cause of the abnormality in the operation state corresponding to the section. (II) When the router network 52 performs dynamic routing, it is determined by a dynamic routing protocol such as RIP from the router equipment constituting the router network 52. (III) distribution of setting information to facilities constituting the hierarchical network 50 based on the umbrella table 120, and (IV) each router 80 # i (i = The distribution of the routing information stored in the routing table 124 is executed for F to I).

  When the work target stored in the work information table 128 is a communication facility or a transmission path, the state determination unit 104 starts or terminates the communication facility or starts a communication facility connected to the transmission path. The section or section (section or section related to the work) is searched from the umbrella table 120 or the section table 122, and (II) it is determined from the work start time and the work end time whether the work is in progress / work in progress / work end. (III) When the work target is a facility constituting the hierarchical network 50, all sections and lines that are affected by the work by sequentially searching the lower sections of the sections related to the work in the umbrella table 120 and the line configuration table 126 (IV) If it is before work, all sections / sections affected by the work are displayed on the display device 92 and the printing device 94. (V) If the work is in progress, the operation state of the umbrella table 120 / section table 122 / routing table 124 is set to “abnormal” and the cause of the abnormality is set to “work” for the section / section. The received information is output to the display device 92 and the printing device 94, (VI) a communication facility or transmission path fails, the operating state of the section registered in the umbrella table 120 is “abnormal”, and the cause of the abnormality is “failure” In this case, regarding the section related to the failure from the umbrella table 120 and the line configuration table 126, the operating state of the section at the same level as the section and the lower section (secondary failure section) of the section is “abnormal”, and the cause of the abnormality “ “Failure”, and outputs the faulty section / section / line to the display device 92 or the printing device 94 by distinguishing between the primary failure and the secondary failure, II) When a failure occurs in a router or a transmission path and the operation state of a section registered in the section table 122 is “abnormal” and the cause of the abnormality is “failure”, the routing table 124 and the line configuration table 126 relate to the failure. For the routing information with the router at the beginning or end of the section as its own equipment or destination equipment, the operation status is “abnormal”, the cause of the error is “failure”, and the operation status of all the route sections of the circuit via the router network 52 is “abnormal” When the operation status of the line in the line configuration table 126 is “abnormal” and the cause of the abnormality is “failure”, the faulty section / line is output to the display device 92 or the printing device 94. (VIII) Control to switch to a normal operating route other than the generated route. Although not shown, a switch for distributing data sent from the end equipment 60 # A to the MUX 70 # B and the router 80 # F according to the type of data is provided.

  The operation of FIG. 2 when the equipment / section / section fails or when the equipment / section / network is operated will be described below.

(A) When the router stops due to a failure FIG. 15 is a diagram illustrating an example of management of the section table 122 when the router 80 # G stops due to a failure. When the router 80 # G stops due to a failure, the information collection / distribution unit 102 detects that the router 80 # G has stopped due to a failure according to a predetermined protocol, and the start or end of the section of the section table 122 is the router 80 # G. Search for records that are. For the record, as shown in FIG. 15, the section operating state is set to “abnormal” and the cause of the abnormality is set to “router 80 # G failure”. In the section table 122, since the sections of the router 80 # F to the router 80 # I are normal, the network NW1 is normal.

  FIG. 16 is a diagram showing a management example of the routing table 124 when the router 80 # G is stopped due to a failure. When it is detected by the information collection / distribution unit 102 that the router 80 # G has stopped due to a failure, the state determination unit 104 determines that the router 80 # G has its own equipment / next order from the routing table 124, as shown in FIG. A record that is a facility is searched, and the movement state of the record is set to “abnormal” and the cause of the abnormality is set to “failure of router 80 # G”.

  As a result, transmission between the router 80 # F and the router 80 # I is normally performed in the FTP protocol, but transmission is not performed in the HTTP protocol (the network is in a stopped state). Thus, even if it is determined that the section table 122 that manages the physical connection relationship is normal, the routing table 124 that manages the logical connection relationship may be determined to be abnormal. To do this, the routing table 124 is necessary.

  When it is detected by the information collection / distribution unit 102 that the router 80 # G has stopped due to a failure, the state determination unit 104 searches the routing table 124 and sends each of the end facility 80 # A to the end facility 80 # J. It is determined whether or not there is routing information whose operating state is abnormal for the route, and if there is abnormal routing information, it is determined that the route is abnormal. Here, it is determined that the route of the HTTP protocol of router 80 # F → router 80 # G → router 80 # I is abnormal. Further, it is determined that the route of the FT protocol of router 80 # F → router 80 # H → router 80 # I is normal. When all the routes in the router NW1 are abnormal, the operation state of the line passing through the NW1 in the line configuration table 126 is set to “abnormal”, and the cause of the abnormality is set to “failure of the router 80 # G”.

  The state determination unit 104 searches the section table 122, the routing table 124, and the line configuration table 126 for a record in which the operation state is “abnormal”, the abnormal section, the abnormal route, and the abnormal cause. Is output to the display device 92 or the printing device 94.

  If the routing method is a dynamic routing method, the route is changed when the router breaks down. However, the fact that the route has been changed is sent from the router related to the route change to the information collection / distribution unit 102. The routing table 124 is updated by the information collection / distribution unit 102, and the state determination unit 104 determines the failure based on the updated information of the routing table 124 related to the router failure. The failure and the failure route are output to the display device 92 or the printing device 94.

(B) When a transmission path between routers is stopped due to a failure FIG. 17 illustrates an example of management of the section table 122 when a failure occurs in the router 80 # G and a transmission path between the routers 80 # H and 80 # I is stopped due to a failure. FIG. The update of the section table 122 related to the failure of the router 80 # G is the same as (a). Further, when the transmission path between the router 80 # H and the router 80 # I stops due to a failure, the information collection / distribution unit 102 stops the transmission path between the router 80 # H and the router 80 # I due to a failure according to a predetermined protocol. When the start of the section of the section table 122 is the router 80 # H or the router 80 # 1 and the end is the router 80 # H or the router 80 # I. As shown in FIG. 17, for the record, the operation state of the section is set to “abnormal”, and the cause of the abnormality is set to “transmission path failure between router 80 # H and router 80 # I”. Also in this section table 122, since the sections of router 80 # F to router 80 # I are normal, it is determined from section table 122 that NW1 is in a normal state.

  FIG. 18 is a diagram illustrating a management example of the routing table 124 when the router 80 # G is stopped due to a failure and the transmission path between the router 80 # H and the router 80 # I is stopped due to a failure. The updating of the routing table 124 related to the failure of the router 80 # G is the same as (a). When it is detected by the information collection / distribution unit 102 that the transmission path between the router 80 # H and the router 80 # I has been stopped due to a failure, the state determination unit 104 determines whether the router 80 # H or the router 80 from the routing table 124. A record in which #I is the own equipment and the router 80 # I or the router 80 # H is the next equipment is searched, and as shown in FIG. 18, the operation state of the record is “abnormal”, and the cause of the abnormality is “router 80”. The failure of the transmission path between #H and router 80 # I ”is set.

  Since the router 80 # H to the router 80 # I are abnormal, the route having the router 80 # H and the router 80 # I in its own equipment and the next equipment is in an abnormal state. As a result, it is determined that not only the HTTP protocol but also the FTP protocol does not transmit between the routers 80 # F to 80 # I (the network is in a stopped state).

  FIG. 19 is a diagram illustrating a management example of the line configuration table 126 when the router 80 # G is stopped due to a failure and the transmission path between the router 80 # H and the router 80 # I is stopped due to a failure. The update of the line configuration table 126 relating to the failure of the router 80 # G is the same as (a). As shown in FIG. 19, the state determination unit 104 sets the operation state of the configuration on the route 2 side registered in the line configuration table 126 as “abnormal” because the network NW1 is stopped, and causes the cause “router 80 #” G failure, failure between router 80 # H and router 80 # I ”. Since the first route side is in a normal state, it is determined that the lines 60 # A to 60 # J are normal. From the section table 122, the routing table 124, and the line configuration table 126, the state determination unit 104 outputs the failure information to the display device 92 or the printing device 94 in the same manner as (a).

(C) When the equipment and transmission lines of the hierarchical network 50 are stopped due to a failure When the equipment and transmission lines of the hierarchical network 50 are stopped due to a failure, the section table 122 and the line configuration table 126 in (a) and (b) The umbrella table 120 and the line configuration table 126 are updated and displayed on the display device 92 and the printing device 94 in the same manner as the above update. In addition, when the equipment or transmission path of the hierarchical network 50 is stopped due to a failure, the operation state of the umbrella table 120 for the section related to the failure of the equipment or transmission path and all lower sections having the section as the upper section. For the record that constitutes “abnormal”, the cause of the abnormality “failure”, and the lowest section, the line operating state of the line configuration table 126 is updated to “abnormal” and the cause of failure “failure”. For example, when a radio 72 # C fails, a record having the radio 72 # C as a start or end, and a record in a section of MUX70 # B-MUX70 # E having a section including the radio 72 # C as an upper section The operation state “abnormal” of the section and the cause of the abnormality “failure of the radio 72 # C” are set.

(D) When the equipment and transmission lines of the hierarchical network 50 are stopped due to work FIG. 20 is a diagram showing a management example of the work information table 128 when the periodic inspection work of the wireless device 72 # C is registered. When the periodic inspection work of the wireless device 72 # C is performed, the operator, through the configuration management unit 100, as shown in FIG. 20, the work information table 128 is classified as “equipment” and the work object “wireless device 72 # C ”, The work start time and end time, and the record of work content“ periodic inspection ”.

  FIG. 21 is a diagram illustrating an example of management of the umbrella table 120 when the wireless device 72 # C is stopped due to work. The state determination unit 104 searches the work information table 128 from the work start time and the work end time for the record before work / working, and determines the umbrella table 120 or the section table 122 from the work target for the record. From the routing table 124 and the configuration management table 126, the section to be stopped by the work is specified in the same manner as (a) to (c).

  When the radio 72 # C is stopped by work, as shown in FIG. 21, the section having the radio 72 # C at the start or end becomes an abnormal state. Next, the sections B to E having the sections C to D in an abnormal state in the upper section are in an abnormal state, and then the end equipment 60 # A to 60 # J having the sections B to E in the upper section are in an abnormal state. Become. Although the end equipment 60 # A to 60 # J is in an abnormal state, since the second route of the line includes the network configuration, it is impossible to determine whether the line is stopped only by the umbrella table 120. The state determination unit 104 outputs to the display device 92 and the printing device 94 the sections that are in an abnormal state and the periods in which these sections are abnormal (before construction and during construction).

  Thereby, it is possible to switch the line to another route of the router network 52 during the construction period. When the construction is completed, a record related to the construction is deleted from the work information table 128 and the fact that the construction is finished is output to the display device 92 and the printing device 94.

  FIG. 22 is a diagram illustrating an example of management of the line configuration table 126 when the transmission path between the wireless device 72 # C, the router 80 # G, and the router 80 # H to the router 80 # I is stopped. In this case, since the first route side is stopped due to work and the second route side is stopped due to a failure, it is determined that the lines 60 # A to 60 # J have stopped, and as shown in FIG. The configuration table 126 is updated. In order to prevent such a line outage, when the work shown in FIG. 20 is performed in the state shown in FIG. 19, the operator is notified that a multiple route stop of the line will occur, and the work is performed. Ask whether or not to do so. When the operator responds that the implementation is possible, the wireless device 72 # C is stopped. When the operator responds that the operation is impossible, the wireless device 72 # C is kept in the operating state.

  As described above, the configuration management of a network in which a hierarchical network and a router network are mixed can be performed using a relational database. It is possible to detect in advance and in real time a network outage in which a hierarchical network and a router network are mixed. Further, it is possible to determine stoppage for each protocol in a network having a network configuration.

The present invention includes the following supplementary notes.
(Appendix 1)
A plurality of communication facilities that multiplex / separate data; a hierarchical network that is hierarchically configured at a plurality of levels by transmission paths connecting the communication facilities; a plurality of routers that route based on a destination address set in a packet; In a communication network management system for managing a router network composed of transmission lines connecting the routers,
Between the first end equipment of the transmission source accommodated in the hierarchical network and the second end equipment of the reception destination, the first end equipment receives the data transmitted to the second end equipment and receives the higher order. A line configuration table including configuration information indicating a line that terminates the communication facility that receives the communication facility to be transmitted to the communication facility from the start end and the upper end communication facility and transmits to the second end facility;
Section information indicating the start and end of the section and the upper section of the section with respect to the section to be the start and end and all sections higher than the section having the same level of communication equipment in the hierarchical structure as the start and end An umbrella table including upper section information indicating the start and end of
An information collection unit for collecting failure information of each communication facility and each transmission path;
The umbrella table is searched, and the communication facility connected to the transmission path of the failure collected by the information collection unit or the section where the failure communication facility collected by the information collection unit is the start or termination Identifying a section that is and a lower section having the section as an upper section, and outputting to the output device that an abnormality has occurred due to a failure in the operating state of these sections;
A communication network management system comprising:
(Appendix 2)
The determination unit searches the line configuration table and is connected to a section in which the communication facility of failure collected by the information collection unit is a start or end or a transmission path of failure collected by the information collection unit. A communication network management system characterized by identifying a line that is a lower section of a section where the communication facility is the start or end, and outputting to the output device that an abnormality has occurred due to a failure in the operation state of the line.
(Appendix 3)
The communication equipment or the transmission path, further comprising a work information table for storing work information indicating the work target for identifying the communication equipment or the transmission path, work start and end time and work content, the determination unit, A section in which the umbrella table is searched and the communication equipment that is the work target stored in the work information table is the start or end, or the communication equipment that is connected to the work transmission line is the start or end, and the upper section is the section And, based on the work start time and work end time, output to the output device that the operation status of these sections is abnormal due to work or has occurred due to work. The communication network management system according to supplementary note 1, characterized by:
(Appendix 4)
A section table that stores section information that defines a section having a transmitting router as a starting point and a receiving router as a terminal for the adjacent routers, and a routing table that stores routing information for each router, and the work table includes: For routers or transmission lines connecting the routers, work information indicating work targets, work start and end times and work contents for identifying the routers or the transmission lines is stored, and the determination unit searches the section table. Then, a section having the work target router as a start or end or a section having a router connected to the work target transmission line as a start or end is specified, and the section is based on the work start time and work end time. The operation status of the section is abnormal or abnormal Communication network management system according to Supplementary Note 3 wherein Outputs that the output device.
(Appendix 5)
The determination unit searches the routing table, identifies a router to be worked stored in the work information table or a router connected to the work target transmission path, and sets the work start time and work end time. The communication network management system according to appendix 4, characterized in that, based on the route passing through the router, the operating state is output to the output device that an abnormality has occurred due to work or that an abnormality has occurred.
(Appendix 6)
For each router stored in the routing table, including routing method information indicating whether a routing method is a static routing method or a dynamic routing method, the information collection unit acquires dynamic routing information , Update the routing table, acquire failure information of the router or the transmission path, search the routing table, specify the failed router or a router connected to the failed transmission path, 6. The communication network management system according to appendix 5, wherein the output device is notified that an abnormality has occurred due to a failure in the operating state of the route relating to the router.
(Appendix 7)
The communication network management system according to appendix 3, wherein the determination unit sets operation information indicating an operation state and an abnormality cause when the operation state is abnormal in each section of the umbrella table and the configuration table. .
(Appendix 8)
The determination unit sets operation information indicating an operation state and an abnormality cause when the operation state is abnormal in each section of the section table and each routing information of the routing table. Communication network management system.
(Appendix 9)
The communication network management system according to appendix 1, wherein the umbrella table stores section information for each input port of the communication equipment at the start of the section and output ports of the communication equipment at the end.
(Appendix 10)
In the routing table, protocol information of the application layer is stored for each routing information, and the determination unit starts from the first end equipment passing through the router network for each protocol based on the protocol information of the routing table. The communication network management system according to appendix 4, wherein normality / abnormality of a route to the second terminal equipment is determined.
(Appendix 11)
The determination unit performs the work stored in the work information table for a route from the first end equipment to the second end equipment through the hierarchical network and a route through the router network. In this case, it is determined whether one or a plurality of routes or all of the routes are in an abnormal state, and if one or a plurality of routes or all of the routes are in an abnormal state, the fact is output to the output device. The communication network management system according to appendix 4, characterized by:

It is a principle diagram of the present invention. It is a figure which shows the communication management system by embodiment of this invention. It is a figure which shows an example of a structure of FIG. It is a figure which shows the other example of a structure of FIG. It is a figure which shows the other example of a structure of FIG. It is a figure which shows an example of the umbrella table about the hierarchical network of FIG. It is a figure which shows an example of the umbrella table about the hierarchical network of FIG. It is a figure which shows an example of the umbrella table about the hierarchical network of FIG. It is a figure which shows the section table about the router network of FIG. FIG. 4 is a diagram showing a line configuration table for the hierarchical network and router network of FIG. 3. FIG. 5 is a diagram showing a line configuration table for the hierarchical network and router network of FIG. 4. FIG. 6 is a diagram showing a line configuration table for the hierarchical network and router network of FIG. 5. It is a figure which shows the routing table about the router network of FIG. It is a figure which shows an example of a work information table. It is a figure which shows the section table when the router G stops by failure. It is a figure which shows a routing table when the router G stops by failure. It is a figure which shows a section table when the transmission line between the router G and the router H-router I stops by failure. It is a figure which shows a routing table when the transmission line between the router G and the router H-router I stops by failure. It is a figure which shows a line | wire structure table when the transmission line between the router G and the router H-router I stops by failure. It is a figure which shows the work information table when the radio | wireless machine C registers regular inspection work. It is a figure which shows the umbrella table when the radio | wireless machine C stops by work. It is a figure which shows the line | wire structure table when the transmission line between the radio | wireless machine C, the router G, and the router H, and the router I stops.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Communication network management system 12 Hierarchical network 14 Router network 18 # i (i = 1-n + 1) Communication equipment 19 Transmission path 20 Router 30 Line structure table 32 Umbrella table 34 Information collection part 36 Determination part

Claims (4)

A plurality of communication facilities that multiplex / separate data; a hierarchical network that is hierarchically configured at a plurality of levels by transmission paths connecting the communication facilities; a plurality of routers that route based on a destination address set in a packet; In a communication network management system for managing a router network composed of transmission lines connecting the routers,
Between the first end equipment of the transmission source accommodated in the hierarchical network and the second end equipment of the reception destination, the first end equipment receives the data transmitted to the second end equipment and receives the higher order. A line configuration table including configuration information indicating a line that terminates the communication facility that receives the communication facility to be transmitted to the communication facility from the start end and the upper end communication facility and transmits to the second end facility;
Section information indicating the start and end of the section and the upper section of the section for the section that is the start and end, and all sections that are higher in the section that have the same level of communication equipment in the hierarchical structure as the start and end Umbrella table including the upper section information indicating the start end and the end of the section, the operation state indicating whether the section is normal or abnormal, and the cause of the abnormality when the operation state is abnormal ,
An information collection unit for collecting failure information of each communication facility and each transmission path;
The umbrella table is searched, and the communication facility connected to the transmission path of the failure collected by the information collection unit or the section where the failure communication facility collected by the information collection unit is the start or termination And the lower section with the section as the upper section, the operational status of these sections is abnormal, and the cause of the abnormality is due to failure is written in the umbrella table and the line configuration table, and these A determination unit that outputs to the output device that an abnormality has occurred due to a failure in the operation state of the section;
Section information defining a section having a transmitting router as a start end and a receiving router as a termination for the adjacent router, and a first end facility connected to the start end and a second end facility connected to the end A section table to store
For each own router, the routing table for storing the routing information about the next router to the destination end equipment and the protocol information about the protocol of the application layer from the own router to the next router,
The determination unit searches the section table when a communication facility with a failure collected by the information collection unit is a failure in a transmission path connecting between routers or routers, and transmits a transmission related to the failure or the router related to the failure. A section having a router connected to the path as a start or end is determined to be abnormal, and the routing table is searched to determine whether the router connected to the failure or the router connected to the transmission path It is determined that the protocol related to the route to be used as a router is abnormal, and the normal / abnormality is determined for the route from the first end equipment to the second end equipment for each protocol based on the section information and the routing information. A communication network management system characterized by determining For each router stored in the routing table, including routing method information indicating whether a routing method is a static routing method or a dynamic routing method, the information collection unit acquires dynamic routing information , Update the routing table, acquire failure information of the router or the transmission path, search the routing table, specify the failed router or a router connected to the failed transmission path, The communication network management system according to claim 1, wherein an abnormality occurs due to a failure in an operating state of a route related to the router, to the output device . The determination unit includes, in the routing information for each section of the section table and the local router in the routing table, operational information indicating whether the route from the local router to the next router is normal / abnormal, and the operational state is abnormal. The communication network management system according to claim 1, wherein an abnormality cause in a certain case is set . For the communication facility or the transmission path, further comprising a work information table for storing work information indicating the work target for identifying the communication facility or the transmission path, work start time and end time, and work content,
The determination unit performs the work stored in the work information table for a route from the first end equipment to the second end equipment through the hierarchical network and a route through the router network. In this case, it is determined whether one or a plurality of routes or all of the routes are in an abnormal state, and the routes in the line configuration table, the umbrella table, the section table, and the routing table are determined for the route in the abnormal state. for writes the cause of the abnormality is a work, one or more or when all the route becomes abnormal state, the communication network of claim 1, wherein the outputting the fact to the output device Management system.

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