[0001]
　The present invention, the management apparatus, a storage medium network management method and program is stored.
Background technique
[0002]
　To determine the traffic volume of each link that constitutes the network, it is necessary to get the statistics for each link. Therefore, in order to obtain statistical information for each link, SNMP (Simple Network Management Protocol), sFlow, using a protocol such as NetFlow, how to get the statistical information from each switch is utilized.
[0003]
　Patent Document 1, the predetermined condition is satisfied router, receives a notification of a traffic amount, in the router, a technique for estimating the amount of traffic than the amount notified traffic is described.
[0004]
　Non-Patent Document 1, restricted information which serves as a reference for obtaining the traffic volume, a technique for estimating the traffic volume from the limited information is described.
CITATION
Patent Literature
[0005]
Patent Document 1: JP 2006-013926 JP
[0006]
非特許文献1 : Yuichi OSHITA et al, “Estimation of Current Traffic Matrices from Long Term Traffic Variations”, IEICE TRANSACTIONS on Communications Vol.E92-B No.1 pp.171-183
Summary of the Invention
Problems that the Invention is to Solve
[0007]
　Incidentally, the disclosure by the prior art documents described above are incorporated by reference herein. The following analysis has been made in view of the present invention.
[0008]
　As described above, in order to grasp the traffic volume of each link that constitutes the network, it is necessary to get the statistics for each link. However, in order to monitor the volume of traffic, it is necessary to periodically gather link statistics. However, larger scale of the monitored network, increases the traffic volume for obtaining statistical information, resulting in load of the network increases. Also, shorter cycle time to obtain statistics, the load of the switch is increased.
[0009]
　Here, in the technique described in Patent Document 1, and Non-Patent Document 1, when estimating the traffic volume, there is a fear that estimation error may occur. Therefore, in the technique described in Patent Document 1, and Non-Patent Document 1, it may be impossible to know the exact amount of traffic.
[0010]
　Accordingly, the present invention is to reduce the load caused to get the traffic volume, contributes to know the exact traffic management system, aims to provide a storage medium which network management method and program is stored to.
Means for Solving the Problems
[0011]
　According to a first aspect of the present invention, the management device is provided with the following functions. The management apparatus of the first switch group included in the network, a switch included in the first switch group to the end point, to obtain the topology information about the link group includes a topology information acquiring unit.
　Further, the management device configures the link group, a group of switches including one of the end points of the link, selecting one or more of the monitored switch, a switch selector.
　Further, the management device obtains the statistical information from the monitored switch includes a statistical information acquisition unit.
[0012]
　According to a second aspect of the present invention, a network management method including the following steps are provided.
The network management method of the first switch group included in the network, a switch included in the first switch group to the end point, comprising the step of obtaining the topology information about the link group.
　Further, the network management method, constituting the link group, a group of switches including one of the end points of the link, including the step of selecting one or more of the monitored switch.
　Further, the network management method includes the step of obtaining statistical information from the monitoring switches.
　The present method is connected to the switch, that the management apparatus that acquires statistical information from the switch, is tied to a particular machine.
[0013]
　According to a third aspect of the present invention, a storage medium is provided which program including the following processes are stored. The storage medium on which the program is stored, among the first group of switches included in the network, a switch included in the first switch group to the end point, the process of acquiring the topology information about the link group, the programs to be executed by a computer for controlling the management device connected to the first switch group are stored.
　Further, the storage medium on which the program is stored constitute the link group, a group of switches including one of the end points of the link, it executes a process of selecting one or more of the monitored switch in the computer program for are stored.
　Further, the storage medium on which the program is stored, the process of acquiring the statistical information from the monitored switch, program to be executed by the computer is stored.
　Incidentally, the program, the computer can be recorded in a storage medium reading. A storage media may be semiconductor memory, a hard disk, a magnetic recording medium, as a non-transient, such as an optical recording medium (non-transient) is. The present invention can also be embodied as a computer program product.
Effect of the invention
[0014]
　According to each aspect of the present invention to reduce the load caused to get the traffic volume, contributes to know the exact amount of traffic management device, a storage medium network management method and program is stored are provided that.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015]
FIG. 1 is a diagram for explaining the outline of an embodiment.
Is a block diagram showing an example of an internal configuration of FIG. 2 management apparatus 100.
Is a block diagram showing an example of the internal configuration of [3] Network controller 105.
4 is a flow chart showing an example of the operation of the management apparatus 100 according to the first embodiment.
[5] Connection of the switches 301-308, and is a diagram showing an example of a path connecting the switch 301-308.
6 is a diagram showing an example of the updated topology.
[7] and each link is a diagram showing the correspondence between the switch for capturing the statistics for each link.
8 is a flowchart showing an example of an operation of the management apparatus 100 according to the second embodiment.
9 is a diagram showing an example of the updated topology.
Diagrams [10] shows an example of the updated topology.
11 is a diagram showing an example of the updated topology.
Diagrams [12] shows an example of the updated topology.
[13] and each link is a diagram showing the correspondence between the switch for capturing the statistics for each link.
DESCRIPTION OF THE INVENTION
[0016]
　First, an outline of an embodiment with reference to FIG. The drawings reference numerals denoted in the this summary is intended for convenience appended to each element as an example to aid understanding, description of this summary is not intended to in any way limited.
[0017]
　As described above, to reduce the load caused to get the traffic volume is desired management apparatus that contribute to know the exact amount of traffic.
[0018]
　Therefore, as an example, to provide a management apparatus 10 shown in FIG. Management apparatus 10 includes a topology information acquiring unit 11, a switch selector 12, and the statistical information acquisition unit 13, a.
[0019]
　Topology information acquisition unit 11, among the first group of switches included in the network, a switch included in the first switch group to the end point, to obtain the topology information about the link group.
[0020]
　Switch selection unit 12 constitutes a link group included in the topology information, a set of switches, including any of the end points of the link, selecting one or more of the monitored switch.
Monitored switch selected is in a range of a network of a given link group is a switch that connects to one of the links.
[0021]
　For example, the switch selector 12, in all of the links that configure the network, a set of switches including at least one of the end points of each link may be selected one or more of the monitored switch. In that case, the monitored switches are selected, the entire network is a switch that connects to one of the links.
[0022]
　Here, the switch selector 12, the total number of the monitored switches to be selected, to be less than the total number of switches in the first switch group, it is preferable to select the monitored switch. That is, the switch selector 12, it is preferable that the first switch group, selecting a portion of the switch as a monitoring target switch
[0023]
　Statistical information acquiring unit 13, a monitoring target switches switch selection unit 12 selects, acquires statistical information. In other words, the statistical information acquisition unit 13, among the first switch group, a part of the switch (i.e., monitored switch) to obtain statistical information from. Note that in this document, the statistical information, shall mean the statistical information of the traffic flowing through the link.
[0024]
　Consequently, the administration device 10, contributes to reducing the load generated to obtain the traffic volume. Further, as described above, the range of the network to be acquisition target statistics monitored switch that is selected is a switch that connects to one of the links. Therefore, with respect to links that acquisition target statistics management device 10, the switches connected to the link, can easily grasp the accurate traffic volume. From the above, the management device 10 reduces the load caused to get the traffic volume, it contributes to know the exact amount of traffic.
[0025]
[First Embodiment]
　A first embodiment will be described in more detail with reference to the drawings.
[0026]
　Figure 2 is a block diagram showing an example of the internal configuration of the management apparatus 100 according to this embodiment.
Management apparatus 100 includes a communication unit 101, a path information management unit 102, a topology information managing unit 103, a statistical information management unit 104, a network controller 105, include.
[0027]
　The communication unit 101 controls the respective network node, communication with the different systems. Path information management unit 102 manages the routing information of the route in the network. Topology information management unit 103 relates to a network configuration, manages the topology information. Statistical information management unit 104 holds statistical information on traffic. Network controller 105 controls the network to be managed in the management apparatus 100.
[0028]
　Hereinafter, the network control unit 105 will be described in detail.
[0029]
　Figure 3 is a block diagram showing an example of the internal configuration of the network controller 105. Network controller 105 includes a topology information acquiring unit 1051, a route information obtaining unit 1052, a topology information updating unit 1053, a switch selector 1054, a table generation unit 1055, is configured to include a statistical information acquisition unit 1056 that.
[0030]
　Topology information acquiring unit 1051, for the network configuration, to identify the topology information. Specifically, the topology information acquiring unit 1051, among the first group of switches included in the network, a switch included in the first switch group to the end point, to obtain the topology information about the link group.
[0031]
　The topology information acquiring unit 1051, one or more switches included in the network (the first switch group of the above), and an end point of the switch, one or more links (link above group) Identify.
[0032]
　Route information acquiring unit 1052 acquires the route information. Specifically, the route information acquisition section 1052 acquires the path information from the path information management unit 102.
[0033]
　Topology information update unit 1053, based on the route information, and topology information, the first switch group selects a predetermined condition is satisfied one or more of the second switch, the second switch selected end point to generate a link group to be. Then, topology information updating unit 1053, based on the generated link group, and updates the topology information.
[0034]
　Here, the topology information updating unit 1053, the number of switches included in the topology information of the updated (i.e., the number of the second switch), the number of switches included in the pre-update topology information (i.e., the first as less than the number of switches) included in the switch group, and updates the topology information. In other words, the topology information update unit 1053, the number of links included in the topology information of the updated, to be less than the number of links included in the topology information of the updated, updates the topology information. In other words, the topology information update unit 1053, so as to degenerate, and updates the topology information. However, the topology information updating unit 1053, the updated topology information, as the bandwidth of the network before updating the topology information is maintained shall update the topology information.
[0035]
　It will be described in detail for the second switch above.
[0036]
　Topology information update unit 1053, a switch that satisfies at least one of the following conditions 1 to 3 are selected as a second switch.
[0037]
(Condition 1)
　and the network configured to include a first switch group, and the external network for the network, it becomes contact of the switch included in the route information.
[0038]
(Condition 2)
　switches in the first switch group, the number of links with different switches the own switch, a predetermined number (e.g., three) with greater than, that contained in the route information.
[0039]
(Condition 3)
　based on the routing information, switch in the first switch group, path generation, or terminate.
[0040]
　Switch selection unit 1054 constitute a link group included in the topology information, a set of switches, including any of the end points of the link, selecting one or more of the monitored switch. Here, the monitored switch, statistical information acquisition unit 1056, a target for collecting statistical information, means switch. Then, the set of monitored switches are in the graph consists of link groups, corresponding to a set of vertices that the vertex cover.
[0041]
　The switch selector 1054, the topology information updating unit 1053 when updating the topology information, based on the link group included in the updated topology information, selects one or more of the monitored switch. That is, the switch selection unit 1054, as the network is degenerated, when updating the topology information, based on the degenerate topology information to select the switch to collect statistics.
[0042]
　Table generating unit 1055 generates a link having a switch included in the first switch group to the end point, the monitored switches for acquiring statistical information of the link, a table which associates.
[0043]
　Statistical information acquisition unit 1056 acquires statistical information from the monitoring switches. Specifically, the statistical information acquisition unit 1056, if the link to get the statistical information is specified, with reference to the table the table generating unit 1055 generates, for identifying the monitored switches corresponding to the link of interest. Then, the statistical information acquisition unit 1056, the port monitored switch identified, the amount of transmission traffic, and acquires the received traffic amount. Then, the statistical information acquisition unit 1056 acquires the transmission traffic amount, and based on the received traffic, the statistics of the traffic amount in each switch, is calculated as statistical information.
[0044]
　Next, the operation of the management apparatus 100 in this embodiment.
[0045]
　Figure 4 is a flow chart showing an example of the operation of the management apparatus 100.
[0046]
　In step S1, the topology information update unit 1053, a switch group constituting the network (first switch group) satisfying a predetermined condition, selects one or more of the second switch.
[0047]
　Specifically, the topology information acquiring unit 1051, the path information management unit 102 obtains route information of the network. Further, the topology information acquiring unit 1051, the topology information managing unit 103 obtains the topology information of the network. The topology information acquiring unit 1051, based on the topology information, identifying a first switch group. Further, the topology information acquiring unit 1051, a switch included in the first switch group identified the endpoint to identify one or more links. Then, topology information updating unit 1053, a switch that satisfies at least one of the conditions 1 to 3 described above, is selected as the second switch.
[0048]
　In step S2, the topology information update unit 1053 generates a link group to the end point of the second switch selected.
[0049]
　In step S3, the switch selector 1054, the generated link group, selects one or more of the monitored switch. The table generation unit 1055 generates a link having a switch included in the first switch group to the end point, the monitored switches for acquiring statistical information of the link, a table which associates.
[0050]
　In step S4, the statistical information acquisition unit 1056, a monitoring target switches to obtain statistics.
[0051]
　In step S5, the statistical information acquisition unit 1056, based on the acquired statistical information, it calculates the traffic amount on the network. Then, the statistical information acquisition unit 1056, the acquired statistical information is stored in the statistical information management unit 104. Then, the management apparatus 100, the step S4, repeats the processing in step S5, the integrated statistics.
[0052]
　Hereinafter, an example of a process for selecting a monitored switch will be described in detail with reference to the drawings.
[0053]
　5, the connection switches 301-308, and is a diagram showing an example of a path connecting the switch 301-308. 5, each circle denote the respective communication device (switch). Then, in FIG. 5, numbers in each circle, for purposes of explanation, it is assumed that reference numerals identify the switch. Further, in the case of FIG. 5, switches 301-308 are intended to correspond to the first switch group of the. Incidentally, FIG. 6, it is assumed that the same in Figures 9-12.
[0054]
　5, the path L1 (Fig solid line shown in 5), (dotted line shown in FIG. 5) path L2, (dashed lines shown in FIG. 5) path L3, (dashed line shown in FIG. 5) path L4, path L5 (FIG. 5 It shows a two-dot chain line) shown in. More specifically, as follows, paths L1 ~ L5 shown in FIG. 5 is configured to include a link to the following switches and end points.
Path L1: Switch 301-switch 302, the switch 302-switch 303, the switch 303 - switch 305, the switch 305- switch 306, the switch 306 - switch 308, the switch 308- switch 304, the switch 304- switch 301, the switch 301-switch 307 switch 307- switch 308
routes L2: switch 302-switch 303, the switch 303 - switch 305, the switch 305- switch 306
routes L3: switch 301-switch 304, the switch 304- switch 308, the switch 308- switch 306
routes L4: switch 301-switch 307, the switch 307- switch 308, the switch 308- switch 306
routes L5: switch 301-switch 307
[0055]
　Here, in the case of the network shown in FIG. 5, the topology information managing unit 103 stores the connection relationship of the switch 301-308. The route information management unit 102 stores an information on the path L1 ~ L5.
[0056]
　In that case, the topology information acquiring unit 1051 refers to the topology information managing unit 103 obtains the connection relation of the switches 301-308. The route information acquisition section 1052, refers to the path information management unit 102 acquires information relating to the route L1 ~ L5. Then, topology information updating unit 1053, a switch 301 ~ 308 shown in FIG. 5, selects the second switch satisfies the conditions 1 to 3 described above.
[0057]
　Here, as the condition 2, the topology information update unit 1053, the first switch group, switches the number of links with different switches from the own switch exceeds 3 shall be selected as the second switch . In that case, the topology information update unit 1053, a second switch that satisfies at least one of the conditions 1 to 3 described above, switch 301, switch 302, switch 303, switch 306, switch 307 selects the switch 308. Then, topology information updating unit 1053, a second switch to generate a link group to the end point, based on the generated link group, and updates the topology information. Specifically, the topology information update unit 1053 generates a link group including a switch shown in FIG.
[0058]
　Figure 6 is a topology information updating unit 1053 updates a diagram showing an example of a link group.
In the link group shown in FIG. 6, the switch 304 shown in FIG. 5, a switch 305, respectively, switches 301, is intended to include the switch 303, referred to as switches 301 and 303 switch 301 ', the switch 303' and. As a result, as shown in FIG. 6, the topology information update unit 1053 generates the following link group.
[0059]
　Generated link group: switch 301'- switch 302, the switch 302-switch 303 ', switch 303'- switch 306, the switch 306 - switch 308, the switch 308- switch 301', switch 308- switch 307, the switch 307- switch 301 '
[0060]
　Here, the switch selector 1054, the topology information updating unit 1053 from the updated link group includes at least one of the end points of all links is assumed to select one or more of the monitored switch. For example, in the following description, the switch selector 1054, the switch 301 ', the switch 303', the switch 308 shall be selected for monitoring switch.
[0061]
　In that case, the statistical information acquisition unit 1056, the monitored switch (switch 301 ', the switch 303', switch 308) corresponding to, and acquires statistics following links.
Switch 301 ': Switch 301'- switch 302, the switch 301'- switch 307, the switch 301'- switch 308
, switch 303': Switch 303'- switch 302, the switch 303'- switch 306
switch 308: switch 308- switch 301 ', switch 308- switch 306, switch 308- switch 307
[0062]
　Incidentally, as a link of the switch 301'- switch 308, the switch 301 ', and both switches 308, if available statistical information, the statistical information acquisition unit 1056, any one of the switches (e.g., switch 301' , or it may acquire statistics from the switch 308). Thus, statistical information acquisition unit 1056, the degenerate topology information, to obtain statistical information of all the links.
[0063]
　The statistical information acquisition unit 1056, the non link included in the second switch, a case of obtaining statistics about the traffic. That is, when the switch 301 to switch 308 shown in FIG. 5,
switch 301-switch 304
switches 304- Switch 308
Switch 303 - switch 305
switches 305- switch 306
statistics on traffic in links, statistical information acquisition consider the case of part 1056 to acquire. In that case, the statistical information acquisition unit 1056, a switch 301-switch 304, as the statistical information of the link switch 304- switch 308, may be used statistics of the link switch 301'- switch 308. Similarly, statistical information acquisition unit 1056, a switch 303 - switch 305, as the statistical information of the link switch 305- switch 306, may be used statistics of the link switch 303'- switch 306.
[0064]
　Figure 7 is a diagram showing each link shown in FIG. 5, the correspondence between the switch for capturing the statistics for each link. For the network shown in FIG. 5, as shown in FIG. 7, the switch for obtaining the link statistics, switch 301, switch 303, which is either of the switches 308. That is, from the monitoring target switch selected, by statistical information acquisition unit 1056 collects statistics management device 100, it is possible to grasp the statistics about traffic previous link of the network.
[0065]
　As described above, the management apparatus 100 according to this embodiment, the switch included in the network, select the switch to acquire the statistical information (only). Further, the management apparatus 100 according to this embodiment, the switches connected to one of the links constituting the network is selected as a switch for obtaining statistical information. As a result, the management apparatus 100 according to this embodiment can reduce the load caused to get the traffic volume, it contributes to know the exact amount of traffic.
[0066]
[Second Embodiment]
　A second embodiment will be described in more detail with reference to the drawings.
[0067]
　This embodiment is in the form of a plurality create a supervised switch set. In the description of this embodiment, description of parts common to those of the embodiment is omitted. Furthermore, in the description of the present embodiment, the same components as the above embodiments are denoted by the same reference numerals and description thereof is omitted. In the description of this embodiment, even for the same operation and effect as the above embodiment, the description thereof is omitted.
[0068]
　Internal configuration of the management apparatus 100 is shown in FIG. The internal configuration of the network control unit 105 is as shown in FIG. In the following description, differences from the first embodiment will be described in detail.
[0069]
　Switch selecting section 1054 according to this embodiment, the set of monitored switch, to create two or more. Then, the statistical information acquisition unit 1056 according to this embodiment selects, for each timing of the acquisition of statistical information, to select the set of monitored switches, the switches included in the set of monitored selected switches, for monitoring the switch to. Then, the statistical information acquisition unit 1056, from the monitoring target the selected switch, to obtain statistics.
[0070]
　The statistical information acquisition unit 1056 according to this embodiment, in the link topology information updating unit 1053 is included in the updated link group, each switch of the endpoint may be calculated to obtain the frequency statistics. In that case, the statistical information acquisition unit 1056, based on the acquired frequency of each switch, selecting a set of monitored switch. Then, the statistical information acquisition unit 1056, a switch in the set of monitored switch selected is selected as a monitoring target switch. Then, the statistical information acquisition unit 1056, from the monitoring target the selected switch, to obtain statistics.
[0071]
　Next, the operation of the management apparatus 100 according to this embodiment.
[0072]
　Figure 8 is a flow chart showing an example of the operation of the management apparatus 100 according to this embodiment.
Incidentally, step S101, step S102 shown in FIG. 8, step S1 shown in FIG. 4, the same as steps S2, a detailed description thereof will be omitted.
[0073]
　In step S103, the switch selector 1054, a set of monitored switch, to create two or more.
[0074]
　In step S104, the switch selector 1054, based on the load of the switch to determine the set of monitored switch to obtain statistics.
[0075]
　In step S105, the statistical information acquisition unit 1056, a switch in the set of the determined monitoring target switch, and acquires statistical information.
[0076]
　In step S106, based on the obtained statistical information, to create a traffic information on a network.
[0077]
　Hereinafter, an example of a process for selecting a monitored switch according to the present embodiment will be described in detail with reference to the drawings.
[0078]
　First, as described above, the switches 301-308, and path L1 to L5 shown in FIG. 5, the topology information update unit 1053, a second switch, the switch 301, switch 302, switch 303, switch 306, switch 307, and selects the switch 308.
[0079]
　The switch selector 1054 according to the present embodiment, the set of monitored switch (hereinafter, referred to as "set of switches") as shall create a set of switches 1-4 below. 9 to 12 are diagrams showing the monitored switches of the switch set 1-4. 9 to 12 are switches shown in bold indicate that the monitored switches in the set of each.
Switch Set 1 (see Figure 9): the switch 301 ', the switch 303', the switch 308
(see FIG. 10) switches the set of 2: switch 302, switch 306, switch 307, switch 308
switches the set of 3 (see FIG. 11) : switch 301 ', the switch 303', the switch 306, the switch 307
switches a set of 4 (see Figure 12): the switch 302, the switch 303 ', switch 307, switch 308
[0080]
　Further, FIG. 13, for each set of switches is a diagram showing each link shown in FIG. 5, the correspondence between the switch for capturing the statistics for each link. Switch selection unit 1054, when you create a set of switches, the table generating unit 1055 may generate a table shown in FIG. 13. That is, the table generating unit 1055, for each set of switches, and links with a switch included in the set end point, the monitored switches for acquiring statistical information of the link, and generate a table that associates good. Management device 100 generates a table as shown in FIG. 13, by storing, efficient, able to determine the acquisition target switch statistics.
[0081]
　The switch selector 1054, for each timing of the acquisition of statistical information, selecting a set of switches. The switch selector 1054, from a set of selected switches is selected as the monitored switch. Then, the statistical information acquisition unit 1056, in response to the acquisition target of the link statistics, by referring to the table the table generating unit 1055 has generated, determines the acquisition target switch statistics.
[0082]
　For example, statistical information acquisition unit 1056, a case of obtaining statistics for the first time, by using the set 1 of the switch, to obtain statistics. Then, the statistical information acquisition unit 1056, when then obtaining statistics, using the set 1 of the switch may obtain statistics.
[0083]
　Here, for example, referring to the table shown in FIG. 13, if the link switch 301-switch 307, in accordance with the set of switches, different acquisition target switch statistics. Specifically, in the case of the switch it sets 1 and 3, corresponding to the link of the switch 301-switch 307, the acquisition target switch statistics, a switch 301. On the other hand, in the case of the switch set 2 and 4, corresponding to the link of the switch 301-switch 307, the acquisition target switch statistics, a switch 307.
[0084]
　Therefore, the switch selection unit 1054, for each switch, may count the number of acquisitions of the statistics. Then, the statistical information acquisition unit 1056, depending on the number of acquisitions of the statistical information for each switch, may be adjusted statistics traffic.
[0085]
　The switch selector 1054, for each switch, calculates the frequency of acquiring the statistical information based on the acquired frequency of each switch, it may select a set of switches. Then, switch selection unit 1054, from the set of switch you have selected, may be selected to be monitored switch.
[0086]
　Further, the management apparatus 100 may acquire the load of each switch. The switch selector 1054, based on the load of the switch, may select a set of switches. For example, a load switch 303 is increased. In that case, the switch selection unit 1054 does not include the switch 303 may select the set 2 switches. As a result, the management apparatus 100 can reduce the load on the switch 303.
[0087]
　As described above, the management apparatus 100 according to this embodiment, the set of monitored switch, to create two or more. Then, the management apparatus 100 according to this embodiment, depending on the situation, by switching the acquisition target switch statistics, can be suppressed access (acquisition processing statistics) increases for a given switch. As a result, the management apparatus 100 according to this embodiment, further, to reduce the load caused to get the traffic volume, it contributes to know the exact amount of traffic.
[0088]
　Some or all of the embodiments described above can be described as the following notes, not limited to the following.
[0089]
　(Supplementary Note 1) are as management device according to a first aspect of the.
[0090]
　And (Supplementary Note 2) path information acquiring unit for acquiring path information, the route information, and based on the topology information, from the first switch group, the predetermined condition is satisfied one or more of the second switch selected, to generate a link group to the selected end point the second switches, based on the generated link group updating the topology information, further comprising a topology information updating unit, and the switch selector , based on the topology information the topology information updating unit has updated, to select one or more of the monitored switch management apparatus according to Appendix 1.
[0091]
　(Supplementary Note 3) The topology information updating unit, and a network configured to include the first switch group, and the external network for the network, it becomes contact of a switch included in the route information, the first It is selected as the second switch, the management apparatus according to Appendix 2.
[0092]
　(Supplementary Note 4) The topology information updating unit, in the first switch group, the number of links with different switches the own switch, together with more than a predetermined number, the switch included in the route information, the first It is selected as the second switch, the management apparatus according to note 2, or 3.
[0093]
　(Supplementary Note 5) The topology information updating unit, based on the path information in the first switch group, path generation, or a termination switch, selecting as said second switch, according to Note 2 to 4 management device according to any one.
[0094]
　Further comprising a link having a switch included in the (Supplementary Note 6) The first switch group to the end point, and the monitoring target switches to obtain statistics of the link, generating a table that associates the table generating unit the management device according to any one of appendices 1 through 5.
[0095]
　(Supplementary Note 7) The switch selection unit, the set of monitored switch to create two or more, in every timing of acquisition of the statistical information, to select the set, select the monitored switch from the selected set to management apparatus according to any one of appendices 1 to 6.
[0096]
　(Supplementary Note 8) The switch selection unit, the set of monitored switch to create two or more, in the link included in the link group, each switch of the end point of the link, and calculates the frequency of acquiring the statistical information, based on the obtained frequency of each switch, select the set, selecting the monitoring target switch from the selected set, the management apparatus according to Appendix 7.
[0097]
　(Supplementary Note 9) The table generating unit, for each said set to generate a link with a switch included in the set end point, and the monitoring target switches to obtain statistics of the link, a table that associates the management device according to note 7 or 8.
[0098]
　It is as a network management method according to (Supplementary Note 10) The second aspect.
[0099]
　(Supplementary Note 11) is as a program according to the third aspect.
[0100]
　Incidentally, the embodiment shown in Appendix 10 or 11 described above, similarly to the embodiment shown in Appendix 1, it can be developed into the form shown in Appendix 2 to 9.
[0101]
　Incidentally, the above disclosure of the patent and non-patent literature, are incorporated by reference herein. Within the bounds of the full disclosure of the present invention (including the claims), and based on the basic technical concept, it is possible to modify and adjust embodiments. Further, the entire disclosure various disclosed elements within the framework of the present invention various combinations of (each element of each claim, each element of each embodiment, including the elements of each drawing), to not can be optionally is there. That is, the present invention naturally including the entire disclosure, various modifications will be made by those skilled in the art according to the technical concept, modification and in the appended claims. In particular, for the numerical ranges described herein, any numerical or small range comprised within the range should be construed as specifically described, even if otherwise stated.
　Although the present invention has been described with reference to exemplary embodiments, the present invention is not limited to the above embodiment. Configuration and details of the present invention, it is possible to make various modifications that those skilled in the art can understand within the scope of the present invention.
　This application claims priority based on Japanese Patent Application No. 2015-051223 filed on March 13, 2015, the entire disclosure of which is incorporated herein.
DESCRIPTION OF SYMBOLS
[0102]
10,100 management device
11,1051 topology information acquiring unit
12,1054 switch selector
13,1056 statistical information acquisition unit
101 communication unit
102 path information management unit
103 topology information managing unit
104 statistical information management unit
105 network controller
301-308 switch
1052 route information obtaining unit
1053 topology information updating unit
1055 table generating unit
L1 ~ L5 path
The scope of the claims
[Claim 1]
　Of the first switch group included in the network, a switch included in the first switch group to the end point, to obtain the topology information about the link group, and topology information acquiring unit,
　on the basis of the topology information, the constituting a link group, a group of switches including any of the end points of the link, selecting one or more of the monitored switch, and the switch selection means,
　and acquires statistical information from the monitored switch statistics an acquiring unit,
　the management apparatus comprising a.
[Claim 2]
　A route information acquiring means for acquiring path information,
　the route information, and based on the topology information, from said first switch group selects a predetermined condition is satisfied one or more of the second switch, selection wherein the second switch to generate a link group to the end point, based on the generated link group updating the topology information, the topology information updating unit, which is
　further provided with,
　the switch selection means, the topology information update unit based on the link group generated selects one or more of the monitored switch management apparatus according to claim 1.
[Claim 3]
　The topology information update means, a network configured to include the first switch group, and the external network for the network, it becomes contact of a switch included in the route information, as the second switch selecting, management apparatus according to claim 2.
[Claim 4]
　The topology information updating means, in the first switch group, the number of links with different switches the own switch, together with more than a predetermined number, the switch included in the route information, as the second switch selecting, management apparatus according to claim 2 or 3.
[Claim 5]
　The topology information updating unit, based on the path information in the first switch group, path generation, or a termination switch, selecting as said second switch, one of the claims 2 to 4 one management apparatus according to.
[Claim 6]
　Further comprising a link having a switch included in the first switch group to the end point, and the monitoring target switches to obtain statistics of the link, generating a table that associates the table generating means, according to claim 1 or management device according to any one of the 5.
[Claim 7]
　The switch selection means, the set of monitored switch to create two or more, in every timing of acquisition of the statistical information, to select the set, selecting the monitoring target switching from said selected set, claim management device according to any one of 1 to 6.
[8.]
　Said switch selecting means, wherein the set of monitored switch, creating two or more, in the link included in the link group, each switch of the end point of the link, and calculates the frequency of acquiring the statistical information, the per switch based on the acquisition frequency, selecting the set, selecting the monitoring target switch from the selected set, the management apparatus according to claim 7.
[Claim 9]
　　Of the first switch group included in the network, a switch included in the first switch group to the end point, obtains topology information about the link group,
　on the basis of the topology information, constituting the link group, a set of switches, including any of the end points of the link, one or more selected monitored switch,
　acquires statistical information from the monitored switch
　network management method.
[Claim 10]
　Of the first switch group included in the network, a switch included in the first switch group to the end point, the process of acquiring the topology information about the link group,
　constituting the link group, either end of the link or the set of switches including a process of selecting one or more of the monitored switch,
　the process of acquiring statistical information from the monitoring target switch,
　and a management device connected to said first switch group storage medium in which the program to be executed by a control computer is stored.

[Claim 1]
　Of the first switch group included in the network, a switch included in the first switch group to the end point, to obtain the topology information about the link group, and topology information acquiring unit,
　on the basis of the topology information, the constituting a link group, a group of switches including any of the end points of the link, selecting one or more of the monitored switch, and the switch selection means,
　and acquires statistical information from the monitored switch statistics an acquiring unit,
　the management apparatus comprising a.
[Claim 2]
　A route information acquiring means for acquiring path information,
　the route information, and based on the topology information, from said first switch group selects a predetermined condition is satisfied one or more of the second switch, selection wherein the second switch to generate a link group to the end point, based on the generated link group updating the topology information, the topology information updating unit, which is
　further provided with,
　the switch selection means, the topology information update unit based on the link group generated selects one or more of the monitored switch management apparatus according to claim 1.
[Claim 3]
　The topology information update means, a network configured to include the first switch group, and the external network for the network, it becomes contact of a switch included in the route information, as the second switch selecting, management apparatus according to claim 2.
[Claim 4]
　The topology information updating means, in the first switch group, the number of links with different switches the own switch, together with more than a predetermined number, the switch included in the route information, as the second switch selecting, management apparatus according to claim 2 or 3.
[Claim 5]
　The topology information updating unit, based on the path information in the first switch group, path generation, or a termination switch, selecting as said second switch, one of the claims 2 to 4 one management apparatus according to.
[Claim 6]
　Further comprising a link having a switch included in the first switch group to the end point, and the monitoring target switches to obtain statistics of the link, generating a table that associates the table generating means, according to claim 1 or management device according to any one of the 5.
[Claim 7]
　The switch selection means, the set of monitored switch to create two or more, in every timing of acquisition of the statistical information, to select the set, selecting the monitoring target switching from said selected set, claim management device according to any one of 1 to 6.
[8.]
　Said switch selecting means, wherein the set of monitored switch, creating two or more, in the link included in the link group, each switch of the end point of the link, and calculates the frequency of acquiring the statistical information, the per switch based on the acquisition frequency, selecting the set, selecting the monitoring target switch from the selected set, the management apparatus according to claim 7.
[Claim 9]
　　Of the first switch group included in the network, a switch included in the first switch group to the end point, obtains topology information about the link group,
　on the basis of the topology information, constituting the link group, a set of switches, including any of the end points of the link, one or more selected monitored switch,
　acquires statistical information from the monitored switch
　network management method.
[Claim 10]
　Of the first switch group included in the network, a switch included in the first switch group to the end point, the process of acquiring the topology information about the link group,
　constituting the link group, either end of the link or the set of switches including a process of selecting one or more of the monitored switch,
　the process of acquiring statistical information from the monitoring target switch,
　and a management device connected to said first switch group storage medium in which the program to be executed by a control computer is stored