JP2009124651A - Network management apparatus and network operation monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To predict the future demand and to reflect network design therewith by monitoring operational statuses of all network devices for each network component that is an extension unit. <P>SOLUTION: A network designing section 103 designs presence/absence of a line between network devices included in respective network components and a bandwidth thereof on the basis of the bandwidth of each network component and a condition for the line that satisfies the bandwidth. A line designing section 104 and a device setting information generating section 105 perform concrete line setting upon each of the network devices. On the basis of the traffic volume obtained from each network device by a traffic acquiring section 107, the traffic volume in future for each network component is predicted by a traffic information processing section 108 to a traffic volume predicting section 111. This predicted traffic volume is fed back to the network designing section 103 by a traffic volume prediction reflecting section 112, thereby re-designing the bandwidth of each of lines. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is configured to communicate with a plurality of network devices capable of setting the presence / absence of a line and its bandwidth, and to design the presence / absence of a line between each network device and its bandwidth, and to each network device based on the design result The present invention relates to a network management device that configures a desired network and manages its operation state to predict network demand and reflect it in future network design, and a network operation monitoring system using the same.

  Conventional networks have been designed in such a way as to satisfy the demand based on user reports and demands between bases (locations of network devices) assumed by the network designer. However, this method has a problem that a thorough investigation is necessary in advance regarding the demand between bases, and sufficient accuracy is required for the investigation.

  In addition, when the capacity of the line is insufficient or excessive due to fluctuations in demand, etc., network equipment can be increased or decreased based on user declarations such as packet loss and response delay, so it can respond appropriately to demand. There was a problem that it was difficult to do.

In order to solve this problem, a method of redesigning the network with a certain percentage of resources reduced from the result of equipment design for multiple traffic patterns, and solving the network equipment configuration with the greatest reduction amount (See Patent Document 1).
JP-A-2005-86675 (Optical network design method and optical network design program)

  However, this technique requires a user to create and input a plurality of traffic patterns assumed for a certain network topology. This can be difficult if the network is large.

  Further, since the traffic volume is managed in units of users, the trend prediction is only in units of users. However, in an in-house network or a telecommunications carrier's network, a plurality of users are often superimposed on a single network, and the design of the network needs to reflect the overall demand of the plurality of users and realize service quality. . It is necessary to add the network in units of network components, and it is necessary to consider the components that need to be added based on the traffic volume in units of users.

  In order to solve the above-described problems, it is necessary to design a network based on prediction of demand for each component of the network, not prediction of trends for each user.

  Therefore, in the present invention, the network service is selected by monitoring the operation status of all network devices and components without performing selection of devices to be managed, and performing predictions for the future, and using the prediction results for network design. The purpose is to design to achieve quality.

  The network management device of the present invention is communicably connected to a plurality of network devices capable of setting the presence / absence of a line and the bandwidth thereof, and designs the presence / absence of the line between each network device and the bandwidth thereof. A network management device that sets each network device based on the network configuration, manages the operation state, predicts network demand, and reflects it in future network design, and includes at least two network devices And at least one network component configured to include at least two network devices, information on each network device selected as the at least two network devices, and at least the input at least Information about the bandwidth of the line connecting two network devices And information on the conditions for the line to satisfy the bandwidth, and the presence / absence of the line between the network devices selected as the targets of each network component and the bandwidth, the bandwidth information in each network component And a network design unit for designing based on condition information for the line for satisfying the bandwidth, and outputting the information of each designed line included in information representing the network component, and the network design unit A line design unit for designing line settings in each network device according to the information representing the network components output from the network, and device setting information for reflecting the line settings designed by the line design unit on the network device. The device setting information generation unit that generates and sends to each network device and the line design unit A connection holding unit for registering and holding the configured line settings together with information representing a network component output from the network design unit, a traffic acquisition unit for periodically acquiring a network traffic amount from each network device, and A traffic information processing unit for registering the traffic amount acquired by the traffic acquisition unit in association with the line setting in the connection holding unit, and the line setting and the traffic amount associated with the line setting by limiting network components from the connection holding unit. A traffic totaling unit for each component that obtains and calculates a representative traffic amount for each network component; a traffic accumulation unit that accumulates a representative traffic amount for each network component calculated by the traffic total for each component; and Based on the data stored in the traffic storage unit A traffic amount prediction unit for predicting future traffic amount for each network component, and the future traffic amount for each network component predicted by the traffic amount prediction unit for the demand / permission of bandwidth for each network component. It is characterized by comprising a traffic amount predicting / reflecting unit that outputs to the network design unit as an over capacity alarm.

  According to the present invention, a network connecting bases is designed, the setting along the network device is reflected, the operation state of the network is managed, the demand used for designing the network components is calculated from the operation state, and the network Can be reflected in the design.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an example of an embodiment of a network operation monitoring system including a network management device of the present invention. The network management device of the present invention includes an input unit 101, a display unit 102, a network design unit 103, Line design unit 104, device setting information generation unit 105, connection holding unit 106, traffic acquisition unit 107, traffic information processing unit 108, traffic totaling unit 109 for each component, traffic accumulation unit 110, and traffic volume It comprises a prediction unit 111 and a traffic amount prediction reflection unit 112, and is connected to a network device capable of setting the presence / absence of a line and its bandwidth so as to constitute a network operation monitoring system.

  Although FIG. 1 shows only one network device, there are actually a plurality of network devices, and it is assumed that the network management device of the present invention is communicably connected to all these network devices. .

  The input unit 101 includes a known keyboard and mouse, and sends information based on a selection operation and an input operation from the user to the network design unit 103. The display unit 102 includes a well-known liquid crystal or CRT display, and displays (presents) information selected or input from the input unit 101 and results of processing by each unit.

  The network design unit 103 receives information representing at least one network component configured including at least two network devices and a line connecting the at least two network devices as the at least two network devices by the input unit 101. Created from information on each selected network device, information on the bandwidth of the line connecting the at least two network devices input from the input unit 101, and information on conditions for the line to satisfy the bandwidth, If necessary, the information is output to the display unit 102 to display the network component, and the presence / absence of the line between the network devices selected as the target of each network component and the bandwidth thereof are information on the bandwidth in each network component. And the line to satisfy that bandwidth The information is designed on the basis of the information of the subject, and the information of each designed line is included in the information representing the network component and output to the line design unit 104 and, if necessary, output to the display unit 102 to output the entire network Is displayed.

  In addition, the network design unit 103 displays a future traffic amount for each network component as an alarm of excess demand / allowable amount for the bandwidth for each network component output from the traffic amount prediction reflection unit 112 described later. The information is output to 102 and displayed, and as the new bandwidth information in each network component, the presence / absence of the line between the network devices selected as the target of each network component and the bandwidth thereof are redesigned, Information on each designed line is included in information representing the network component and output to the line design unit 104, and output to the display unit 102 as necessary to display the entire redesigned network.

  The line design unit 104 designs specific line settings such as port settings in each network device according to the information representing the network components output from the network design unit 103. The device setting information generation unit 105 generates device setting information for reflecting the line setting designed by the line design unit 104 to the network device, and sends it to each network device. The connection holding unit 106 registers and holds (on the database) the line setting designed by the line design unit 104 together with information representing the network component output from the network design unit 103.

  The traffic acquisition unit 107 periodically acquires network traffic from each network device. The traffic information processing unit 108 registers the traffic amount acquired by the traffic acquisition unit 107 in association with the line setting in the connection holding unit 106. The traffic totaling unit 109 for each component restricts the network components from the connection holding unit 106, acquires the line setting and the traffic amount associated therewith, and calculates the representative traffic amount for each network component. The traffic accumulation unit 110 accumulates the representative traffic amount for each network component calculated by the traffic totaling unit 109 for each component.

  The traffic amount prediction unit 111 predicts a future traffic amount for each network component based on the data stored in the traffic storage unit 110. The traffic amount prediction reflection unit 112 outputs the future traffic amount predicted for each network component predicted by the traffic amount prediction unit 111 to the network design unit 103 as an alarm of excess demand / allowance for the bandwidth for each network component. To do.

  Network components include: (1) Two or more devices are connected in a ring, operated using a protocol that prevents traffic from looping, and the conditions for each line as a condition for satisfying the bandwidth A ring whose minimum bandwidth value exceeds the bandwidth value obtained by multiplying its own bandwidth value by a safety factor, and (2) Two devices are connected by two or more lines, and traffic passes through one of the lines. As a condition for the line to satisfy the bandwidth, a link is used in which the sum of the band values of each line exceeds the band value obtained by multiplying the own band value by the safety factor. Shall.

  FIG. 2 shows the flow of processing in the network management apparatus described above, and the operation will be described in detail below by giving an example.

  First, the user selects at least two network devices on the network by using the input unit 101, and information on the bandwidth of the line connecting the at least two network devices and the condition for the line for satisfying the bandwidth ) Is input (selected) (s1), the network design unit 103 creates information representing a network component configured to include the at least two network devices and a line connecting the at least two network devices. (S2) If necessary, output to the display unit 102 to display the network component. This is repeated for all network components to be created.

  FIG. 3 shows an example of the created network component. Here, ring A including network devices 1, 2, 3, and 4 and having a bandwidth value of 100 Mbps, including network devices 3, 4, 6, and 7 and 50 Mbps. Ring B having a bandwidth value, ring C including network devices 7, 9, 10, and 11 having a bandwidth value of 20 Mbps, link D including network devices 2 and 5 having a bandwidth value of 10 Mbps, and network devices 4 and 8 A network component of link E having a bandwidth value of 10 Mbps is created.

  When the creation of information representing all network components is completed (s3), the network design unit 103 determines the presence / absence of a line between the network devices selected as targets of each network component and the bandwidth thereof for each network configuration. Designed based on the bandwidth information in the element and the condition information for the line for satisfying the bandwidth, the information of each designed line is included in the information representing the network component, and the line design unit 104 In addition to outputting (s4), it outputs to the display unit 102 as necessary to display the entire network.

  4 is designed between the network devices 1 to 11 included in each network component shown in FIG. 3 based on the bandwidth information in each network component and the conditions for the line to satisfy the bandwidth. In this example, lines necessary for realizing each network component, that is, lines 1 to 15 are set, and the entire network is shown.

  In the network design unit 103, the presence / absence of the line between the network devices selected as the target of each network component and the bandwidth thereof are compared with the bandwidth information and the line for satisfying the bandwidth in each network component. The specific procedure for designing based on the condition information is as follows.

  First, the bandwidth of all lines is set to zero.

  Next, for all the rings, the bandwidth value of the ring multiplied by the safety factor is added as the minimum bandwidth of each line belonging to the ring.

  Next, for all links, the sum of the bandwidths of the individual lines belonging to the link is multiplied by the link bandwidth value multiplied by the safety factor.

  Thereby, the bandwidth of each line can be determined. At this time, a line having a bandwidth of 0 is regarded as no line. The safety factor can be appropriately set in advance, such as 1.2 times, 1.5 times, and 2 times.

  Next, the line design unit 104 designs specific line settings such as port settings in each network device according to the information representing the network components output from the network design unit 103 (s5). Also, the device setting information generation unit 105 generates device setting information for reflecting the line setting designed by the line design unit 104 to the network device, and sends it to each network device (s6). In addition, the connection holding unit 106 registers and holds the line setting designed by the line design unit 104 together with information representing the network component output from the network design unit 103 (s7).

  Next, the traffic acquisition unit 107 periodically acquires the traffic amount of the network from each network device (s8). The traffic volume acquisition method includes, but is not limited to, using an interface provided by the network device or installing a dedicated acquisition device. FIG. 5 shows an example of the traffic volume acquired from one port of a certain network device in the network shown in FIG.

  Next, the traffic information processing unit 108 registers the traffic amount acquired by the traffic acquisition unit 107 in association with the line setting in the connection holding unit 106 (s9). FIGS. 6 and 7 show that the acquired traffic volume is registered in association with the line setting, here, the port of the network device. FIG. 6 shows an example of registration in association with the entire network, and FIG. It shows an example of registration in association with a certain network component (here, ring A).

  Next, the traffic totaling unit 109 for each component restricts the network components from the connection holding unit 106, acquires the line setting and the traffic amount associated therewith, and calculates the representative traffic amount for each network component ( s10). The representative traffic amount calculation method includes a method using the maximum value, average value, weighted average value, etc. of the traffic amount associated with the line setting corresponding to the corresponding network component, but is not limited thereto. Not. FIG. 8 shows an example of the representative traffic amount (average value) corresponding to the representative traffic amount for each network component, here, the ring A traffic amount shown in FIG.

  Next, the traffic accumulating unit 110 accumulates the representative traffic amount for each network component calculated by the traffic totaling unit 109 for each component (s11). FIG. 9 shows an example of the representative traffic amount for each network component accumulated over a certain period.

  Next, the traffic amount prediction unit 111 predicts the future traffic amount for each network component based on the data stored in the traffic storage unit 110 (s12). As a method for predicting future traffic volume (demand), for example, there is a method described in Japanese Patent Application Laid-Open No. 2000-69165 (traffic prediction method using time-series data conversion and its device), but is not limited thereto. Not. FIG. 10 shows an example of the prediction result of the future traffic volume.

  Next, the traffic amount prediction / reflection unit 112 uses the network design unit as an alarm of over-demand / allowable amount for the bandwidth for each network component by using the future traffic amount predicted by the traffic amount prediction unit 111 for each network component. It outputs to 103 (s13).

  The network design unit 103 outputs, to the display unit 102, the future traffic amount for each network component as an alarm of excess demand / allowance for the bandwidth for each network component output from the traffic amount prediction / reflection unit 112. As a new bandwidth information in each network component, the presence / absence of a line between the network devices selected as targets of each network component and the bandwidth are redesigned (s4).

  FIG. 11 shows an alarm of excess demand / allowable amount for the bandwidth for each network component output to the network design unit 103 and displayed on the display unit 102 (addition is necessary when the predicted traffic volume exceeds the threshold value). An example of a component) is shown. Here, it is shown that it is necessary to add ring A, ring C, and link E. Based on this information, the network design unit 103 increases the band values of ring A, ring C, and link E, and Lines in each network component can be increased.

  As described above, according to the present embodiment, without selecting a device to be managed, the operation status of all network devices and components is monitored, the future prediction is performed, and the prediction result is used as the network design. By using this, it is possible to design to realize network service quality.

The block diagram which shows an example of embodiment of the network operation monitoring system containing the network management apparatus of this invention The flowchart which shows the flow of a process in the network management apparatus of FIG. Explanatory drawing which shows the example of the network component created with this invention apparatus Explanatory diagram showing the entire network created by the device of the present invention Explanatory drawing which shows an example of the traffic volume acquired from the network device Explanatory diagram showing an example of traffic volume registered in association with line settings Explanatory diagram showing another example of traffic volume registered in association with line settings Explanatory diagram showing an example of representative traffic volume for each network component Explanatory diagram showing an example of representative traffic volume accumulated over a certain period Explanatory diagram showing an example of future traffic volume prediction results Explanatory diagram showing an example of an alarm for excess demand / allowance for bandwidth for each network element

Explanation of symbols

  101: input unit 102: display unit 103: network design unit 104: line design unit 105: device setting information generation unit 106: connection holding unit 107: traffic acquisition unit 108: traffic information processing unit 109 : Traffic counting unit for each component, 110: Traffic accumulation unit, 111: Traffic amount prediction unit, 112: Traffic amount prediction reflection unit.

Claims (7)

It is connected so as to be able to communicate with a plurality of network devices capable of setting the presence / absence of a line and its bandwidth, designing the presence / absence of a line between each network device and its bandwidth, and setting each network device based on the design result A network management device that configures a desired network, manages its operational status to predict network demand, and reflects it in future network design,
Information representing at least one network component configured to include at least two network devices and a line connecting the at least two network devices, information on each network device selected as the at least two network devices, and Between the network devices selected from the information on the bandwidth of the line connecting the at least two network devices and the information on the conditions for the line to satisfy the bandwidth, which are selected as targets of each network component The presence / absence of a line and its bandwidth are designed based on the bandwidth information in each network component and the condition information for the line to satisfy the bandwidth, and the information on each designed line is configured in the network configuration. Network design department that outputs by including in element information ,
A line design unit for designing a line setting in each network device according to the information representing the network components output from the network design unit;
A device setting information generating unit for generating device setting information for reflecting the line setting designed in the line design unit to a network device, and sending the network setting information to each network device;
A connection holding unit for registering and holding a line setting designed by the line design unit together with information representing a network component output from the network design unit;
A traffic acquisition unit for periodically acquiring the amount of network traffic from each network device;
A traffic information processing unit that registers the traffic volume acquired by the traffic acquisition unit in association with the line setting in the connection holding unit;
A traffic aggregation unit for each component that obtains a line setting and a traffic amount associated therewith by limiting network components from the connection holding unit, and calculates a representative traffic amount for each network component;
A traffic accumulating unit for accumulating a representative traffic amount for each network component calculated by the traffic aggregating unit for each component;
Based on data accumulated in the traffic accumulation unit, a traffic amount prediction unit that predicts future traffic amount for each network component;
A traffic amount prediction / reflection unit that outputs a future traffic amount predicted by the traffic amount prediction unit to the network design unit as an alarm of over-demand / allowable amount with respect to bandwidth for each network component A network management device. The network design department
The future traffic volume for each network element output from the traffic volume prediction and reflection unit is used as new bandwidth information for each network element, and whether there is a line between the network devices selected as targets for each network element The network management device according to claim 1, wherein the bandwidth is redesigned. As a network component, connect at least two devices in a ring, operate using a protocol that prevents traffic from looping, and set the minimum bandwidth value for each line as a condition for the line to satisfy the bandwidth. The network management device according to claim 1 or 2, wherein a ring is used that exceeds a bandwidth value obtained by multiplying a self-bandwidth value by a safety factor. As a network component, two devices are connected with two or more lines, and one of the lines is operated using a protocol that allows traffic to pass, and the bandwidth of each line is a condition for the line to satisfy the bandwidth. The network management apparatus according to claim 3, wherein a link is used in which a total value exceeds a bandwidth value obtained by multiplying a self-bandwidth value by a safety factor. The presence / absence of a line between network devices selected as targets of each network element and its bandwidth are:
Set the bandwidth of all lines to 0,
For all rings, add the bandwidth value of the ring multiplied by the safety factor as the minimum bandwidth of the individual lines belonging to the ring,
5. The network management apparatus according to claim 4, wherein, for all links, the total value of bandwidths of individual lines belonging to the link is determined by adding the bandwidth value of the link multiplied by a safety factor. 6. The network management apparatus according to claim 1, wherein a maximum value of the traffic amount associated with the line setting corresponding to the corresponding network component is used as the representative traffic amount. A network operation monitoring system comprising: the network management device according to claim 1; a plurality of network devices; and a line connecting the plurality of network devices.

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