JP2013038510A - Network management system, network, path setting method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce burden of a user who uses a network management system (NMS) at the time of selecting a path to achieve a selection of a more suitable path candidate.SOLUTION: A network management system (NMS) comprises: a topology information storage part which stores network topology information; a path information storage part which stores path information set between arbitrary nodes of the network; a path selection support part which presents an existing path set between two nodes when a path between the two nodes selected by a user is set, by referring to the path information storage part; and a path management part which receives a selection of the existing path or a new path with respect to the two nodes selected by the user and performs path setting processing on the node of the path.

Description

  The present invention relates to a network management system, a network, a route setting method, and a program, and more particularly, a network management system, a network, a route setting method, and a program for setting a route between two nodes when a user such as an operator selects a route. About.

  Patent Document 1 discloses a network topology DB that stores and holds network topology information including node information and link information, a topology matrix derivation unit that derives a topology matrix based on the network topology information, and a predetermined value based on the topology matrix. Refer to the shortest path derivation unit that derives the shortest path between the start node and the end node of the node and the flag indicating the use restriction of the time slot. The time slot determination unit that sets the same time slot for a certain link, the derived shortest path, and the time slot set for each link are also referred to as a network management system (hereinafter referred to as “NMS”). And a route setting unit registered in An automatic transmission path design system is disclosed.

  On the other hand, in a simple NMS, a user sets a route by selecting links between end points of route setting objects one by one without mounting the shortest route deriving unit as in Patent Document 1 above. It has been known.

JP 2000-232472 A

  The following analysis is given by the present invention. However, the above-described method in which the user manually selects the route between the end points of the route setting has a problem that there are many possible route candidates and the route setting operation becomes complicated.

  In addition, the above-described method for allowing the user to select a route has a problem that the user selects an inappropriate route because there are a large number of route candidates. For example, consider a case where a route is set between node A and node Z in FIG. It is assumed that a path 1 called A-B-Z and a path 2 called A-C-D-Z are set between the node A and the node Z. Here, when trying to set a new route having the node A and the node Z as endpoints, the user selects a link between the node A and the node Z and determines the route. In the case of FIG. 9, the path A-E-network AA-G-Z via the network AA can also be a path between the node A and the node Z. However, there is a possibility that the network configuration, performance, and transmission time of the network AA will become very large. In this case, the path AE-network AA-G-Z becomes inappropriate as a route.

  On the other hand, the fact that path 1 and path 2 already exist as intermediate routes from node A to node Z also means that the previous operation determined that these routes are appropriate. In operation, it is often appropriate to select the same route.

  The present invention has been made in view of the circumstances described above, and the object of the present invention is to reduce a burden on a user who selects a route using an NMS that selects a route and to select a more appropriate route candidate. A network management system, a network, a route setting method, and a program.

  According to a first aspect of the present invention, a topology information storage unit that stores network topology information, a route information storage unit that stores route information set between arbitrary nodes of the network, and a user-selected A route selection support unit that presents an existing route set between the two nodes with reference to the route information storage unit when setting a route between the two nodes, and the user selected the route A network management system (NMS) is provided that includes a route management unit that accepts selection of the existing route or a new route between two nodes and performs route setting processing on the nodes on the route.

  According to a second aspect of the present invention, a network including the above-described network management system (NMS) is provided.

  According to a third aspect of the present invention, a network comprising: a topology information storage unit that stores network topology information; and a route information storage unit that stores route information set between arbitrary nodes of the network. The management system receives a selection of two nodes to be set from a user from a user, and refers to the route information storage unit when setting a route between the two nodes selected by the user, Presenting an existing route set between two nodes, and accepting selection of the existing route or a new route between the selected two nodes from the user, and setting the route to a node on the route And a path setting method including a process step. The method is tied to a specific machine called a network management system.

  According to a fourth aspect of the present invention, a network comprising: a topology information storage unit that stores network topology information; and a route information storage unit that stores route information set between arbitrary nodes of the network. Refers to the route information storage unit at the time of setting the route between two nodes selected by the user and the process of accepting the selection of two nodes from which the route is set to the computer constituting the management system Then, a process of presenting an existing route set between the two nodes and a selection of the existing route or a new route between the selected two nodes from the user are accepted, and A program for executing a process for setting a route to a node is provided. This program can be recorded on a computer-readable storage medium. That is, the present invention can be embodied as a computer program product.

  ADVANTAGE OF THE INVENTION According to this invention, the burden at the time of the user's route selection using NMS can be eased, and a more suitable route candidate can be selected.

It is a block diagram showing the structure of one Embodiment of this invention. It is a figure which shows an example of the list | wrist hold | maintained at the path | route information storage part of FIG. It is a flowchart showing operation | movement of NMS of one Embodiment of this invention. It is a figure which shows an example of the list | wrist hold | maintained at the path | route information storage part of the 1st Embodiment of this invention. It is a sequence diagram which shows the flow until a path | route is set using NMS of the 1st Embodiment of this invention. It is a figure which shows the path | route shown from a path | route selection assistance part, when the route setting request | requirement of an upper layer is made. It is a figure which shows the path | route shown from a path | route selection assistance part, when the lower layer path | route setting request | requirement is made. It is a figure which shows typically the hierarchical structure of the path | route set by the path | route management part. It is a figure for demonstrating the problem of background art.

  First, an outline of an embodiment of the present invention will be described with reference to the drawings. Note that the reference numerals of the drawings attached to this summary are attached to the respective elements for convenience as an example for facilitating understanding, and are not intended to limit the present invention to the illustrated embodiment.

  As shown in FIG. 1, the present invention accepts a topology information storage unit 11 for storing network topology information and a route selection between two selected nodes from a user, and sets a route to a node on the route. This can be realized by an NMS 10 including a route management unit 12 that performs processing, a route selection support unit 13, and a route information storage unit 14.

  As shown in FIG. 2, the route information storage unit 14 of the NMS 10 stores information on routes set between arbitrary nodes in the network. For example, in the example of FIG. 2, as shown in FIG. 9, a path 1 called A-B-Z and a path 2 called A-C-D-Z are set as paths between the node A and the node Z. It shows that.

  The operation of the NMS 10 will be described as follows. First, upon receiving a route setting request from a user (operator), the NMS 10 refers to the topology information storage unit 11 and displays the network topology on a predetermined management terminal (S001 in FIG. 3). When the user designates the end point (end point node) of the displayed network route setting (S002 in FIG. 3), the route selection support unit 13 refers to the route information storage unit 14 and connects the two end points. The route (existing route) routed at is presented (S003 in FIG. 3).

  For example, in the topology network as shown in FIG. 9, when path 1 and path 2 are set, path 1 and path 2 are presented to the user. As a result, the user can discriminate between the currently set route and the unset route between any specified nodes.

  Here, when the user selects the set route (existing route), the route management unit 12 executes route setting processing as a new path on a node on the same route as the set route (existing route) (see FIG. 3 S004 YES, S005). On the other hand, when the user selects a route that has not been selected (non-existing route), the route management unit 12 receives selection of a route by selecting an individual link from the user (NO in S004 of FIG. 3, S006). Then, the route setting process is executed for the node on the route (YES in S004 of FIG. 3, S005).

  Finally, the route management unit 12 registers the route selected by the user in the route information storage unit 14 (S007 in FIG. 3).

  As described above, in the course of route selection, by presenting the set route (existing route) to the user, the path AE-network AA-G-Z that is inappropriate as the above-described route is selected. It can be reduced. Further, as described above, when selecting the same route as the set route (existing route), the route is specified by selecting the set route (existing route) presented by the route selection support unit 13. To complete. User load is also reduced.

[First Embodiment]
Next, a detailed description will be given of a first embodiment of the present invention in which a route setting state can be presented for each layer with reference to the drawings. Referring to FIG. 1, an NMS 10 including a topology information storage unit 11, a route management unit 12, a route selection support unit 13, and a route information storage unit 14 is illustrated. In the following embodiment, the NMS 10 manages a synchronous synchronous digital hierarchy network (SDH network) as a management target network. Further, in the NMS 10, any TDM (Time Division Multiplexing) path of VC4 (Virtual Container 4; 150 Mbps) as a higher path (High Order Path) and VC12 (2 Mbps) as a lower path (Low Order Path) can be registered. Suppose that

  The topology information storage unit 11 stores topology information of the network 20 as shown in the lower part of FIG. Note that such topology information can also be constructed by collecting information on adjacent nodes using the Link Layer Discovery Protocol (LLDP) of each node.

  The route management unit 12 accepts selection of a route between two nodes from the user, and performs route setting processing on the nodes on the selected route. Specifically, the route management unit 12 issues a command corresponding to an instruction received from the user to a node on the route, and updates data in the route information storage unit 14 based on information returned from each node.

  The route information storage unit 14 is configured by a database or the like that stores information on a set route managed by the route management unit 12. FIG. 4 is an example of route information held in the route information storage unit 14. In the example of FIG. 4, between node A and node Z, information on path A-B-Z belonging to the higher layer (VC4) and information on path A-C-D-Z belonging to the higher layer (VC4). Indicates a registered state.

  The route selection support unit 13 extracts, from the route information storage unit 14, data that matches the nodes and layers for which the user is to set the route this time, and presents the set route (existing route) to the user. Examples of the presentation form of the set route (existing route) include a route list listing the set route (existing route) and a form in which the set route (existing route) is overlaid on the network topology.

  Note that the route management unit 12 and the route selection support unit 13 use the external storage device or the like as the topology information storage unit 11 and the route information storage unit 14 in the computer constituting the NMS 10 and execute the above-described processes. It can also be realized by a program.

  Next, the operation of this embodiment will be described in detail with reference to the drawings. FIG. 5 is a sequence diagram showing a flow until a path is set using the NMS 10 of the present embodiment.

  Referring to FIG. 5, when a route setting request including a route setting target section and route setting layer information is received from the user (S101 in FIG. 5), the route management unit 12 / route selection support unit 13 stores the route information storage. The unit 14 is inquired about the route of the same section and the same layer registered (S102 in FIG. 5).

  The route information storage unit 14 extracts an existing route corresponding to the route setting target section or the route setting layer specified by the route management unit 12 / route selection support unit 13, and sends it to the route management unit 12 / route selection support unit 13. In response, a path list (route list) listing the existing routes is returned (S103 in FIG. 5).

  The route management unit 12 / route selection support unit 13 that has received the path list (route list) presents the path list (route list) to the user (S104 in FIG. 5).

  Hereinafter, the content presented in S104 will be described separately for the case where the user tries to set the route of the upper layer (VC4) and the case where the user tries to set the route of the lower layer (VC12).

[When registering High Order Path (VC4 pass)]
For example, as shown in FIG. 6, there are a VC4 path 3 (reference numeral 51 in FIG. 6) via A-B-Z and a VC4 path 4 (reference numeral 52 in FIG. 6) via A-C-D-Z. When registered in the route information storage unit 14, the route management unit 12 presents the path 3 and the path 4 to the user. The form of presenting the path may be a form of the route list (path list) as it is, or a form of overlaying the set path on the network as shown in FIG.

  Here, for example, if the user selects the VC4 path 3 (S105 in FIG. 5), the path management unit 12 sets a new VC4 path via A-B-Z in the same way as the VC4 path 3, so that the node A , Node B and node Z are routed (S106 in FIG. 5). When the route management unit 12 receives a route setting result from each node (S107 in FIG. 5), the route management unit 12 outputs the fact (S108 in FIG. 5) and registers the selected route information in the route information storage unit 14 (S108 in FIG. 5). S109 of FIG. 5).

[In case of Low Order Path (VC12 pass) registration]
For example, as shown in FIG. 7, VC4 path 5 (reference numeral 71 in FIG. 7) via A-B and VC4 path 6 (reference numeral 72 in FIG. 7) via B-Z are separately provided in the upper layer. It is assumed that the VC4 path 7 (reference numeral 73 in FIG. 7) passing through A-C-D-Z is registered in the route information storage unit 14 and registered in the route information storage unit 14. Further, in the lower layer, the VC12 path 8 (reference numeral 81 in FIG. 7) via A-B-Z and the VC12 path 9 (reference numeral 82 in FIG. 7) via A-C-D-Z are route information. It is assumed that it is registered in the storage unit 14.

  In this case, when the user tries to set the route of the lower layer (VC12) between the node A and the node Z, the route management unit 12 extracts the VC12 path 8 and the VC12 path 9 in FIG. Present.

  Here, for example, if the user selects the VC12 path 8 (S105 in FIG. 5), the path management unit 12 uses the node A to set a new VC12 path via A-B-Z as in the VC12 path 8. , Node B and node Z are routed (S106 in FIG. 5). When the route management unit 12 receives the route setting result from each node (S107 in FIG. 5), the route management unit 12 outputs the fact (S108 in FIG. 5) and registers the set route information in the route information storage unit 14 (FIG. 5). 5 S109).

  The route management unit 12 performs route setting processing by using the VC4 path 5 and the VC4 path 6 that share the same path and section when setting a new VC12 path passing through the A-B-Z. FIG. 8 is a diagram schematically showing the hierarchical configuration of the new VC12 path of FIG. Referring to FIG. 8, end points of lower layers of nodes A, B, and Z located at both ends of upper layer path 5 (VC4) and path 6 (VC4) are connected to both ends.

  In this way, the node B does not connect the end points of the upper layer path 5 and path 6 but instead drops it to the end point of the lower layer and then connects to the upper layer again. It is possible to handle the route as a lower layer route while using the route.

  As described above, according to the present embodiment, it is possible to set and register a new route by selecting an existing route without specifying each route on the way, thereby reducing the burden on the user. Can do.

  When a set route (existing route) is selected, a route determined to be appropriate in the previous operation is selected. As a result, the possibility that an inappropriate route is selected can be reduced.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and further modifications, substitutions, and adjustments are possible without departing from the basic technical idea of the present invention. Can be added. For example, VC4 and VC12 illustrated in the above-described embodiment are examples for explaining the route of the upper layer and the route of the lower layer. For example, VC3 or VC11 can be used instead of VC12.

  In the above-described embodiment, an example of managing the SDH network has been described. However, the present invention can be similarly applied to the case of performing route management of other networks.

  Further, in the above-described embodiment, when the user selects a set route (existing route) of a lower layer, it has been described that the set route (existing route) of an upper layer corresponding to the route is used. At that time, the situation of the upper layer may be taken into consideration.

  In the above embodiment, each node of the network has been described as having an upper layer endpoint and a lower layer endpoint, but there is a node having only an upper layer or lower layer endpoint. Also good. In this case, the topology information storage unit 11 holds the topology information for each layer.

10 Network management system (NMS)
DESCRIPTION OF SYMBOLS 11 Topology information storage part 12 Path | route management part 13 Path | route selection assistance part 14 Path | route information storage part 20 Network 51, 52, 71-73, 81, 82 Set path (existing path)

Claims (10)

A topology information storage unit for storing network topology information;
A route information storage unit for storing route information set between arbitrary nodes of the network;
A route selection support unit that presents an existing route set between the two nodes with reference to the route information storage unit when setting a route between the two nodes selected by the user;
A path management unit that accepts selection of the existing path or a new path between the two selected nodes from the user and performs a path setting process on a node on the path;
A network management system characterized by The route information storage unit distinguishes and stores upper layer routes and lower layer routes between the arbitrary nodes of the network,
The network management system according to claim 1, wherein the route selection support unit presents an existing route according to a layer selected by a user.   When the lower layer existing route is selected and the upper layer existing route corresponding to the lower layer existing route exists, the route management unit uses the upper layer existing route to route The network management system according to claim 2, wherein the setting process is performed. The route management unit
By connecting endpoints of lower layers of nodes located at both ends of the existing route of the upper layer to both ends of the existing route of the upper layer, route setting processing of the lower layer is performed using the existing route of the upper layer. The network management system according to claim 3 to be performed.   The network management system according to claim 1, wherein the network is configured by a synchronous digital hierarchy device.   A network including the network management system according to claim 1. A topology information storage unit for storing network topology information;
A network management system comprising: a path information storage unit that stores path information set between arbitrary nodes of the network;
A step of accepting selection of two nodes from which a route is to be set;
Presenting an existing route set between the two nodes with reference to the route information storage unit when setting a route between the two nodes selected by the user;
Receiving a selection of the existing route or a new route between the selected two nodes from the user, and performing a route setting process on a node on the route. The path information storage unit stores an upper layer path and a lower layer path separately for the arbitrary nodes of the network,
The route setting method according to claim 7, wherein selection of a layer for setting a route is received from the user, and an existing route corresponding to the selected layer is presented. When an existing route in the lower layer is selected by the user and an existing route in the upper layer corresponding to the existing route in the lower layer exists, route setting processing is performed using the existing route in the upper layer. The route setting method according to claim 8 to be performed.
A topology information storage unit for storing network topology information;
A computer constituting a network management system comprising: a path information storage unit that stores path information set between arbitrary nodes of the network;
A process of accepting selection of two nodes from which a route is to be set;
A process of presenting an existing route set between the two nodes with reference to the route information storage unit when setting a route between the two nodes selected by the user;
A program for accepting selection of the existing route or a new route between the two selected nodes from the user and setting a route to a node on the route.

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