JPH09247201A - Linkage type network managing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a managing method which manages an end-to-end communication path, extending over subnetworks, at one place. SOLUTION: This method consists of a subnetwork manager which manages subnetworks composed of sets of end systems and nodes and a linkage control manager placed above it. The management objects of communication paths in the subnetworks (ATM-LAN1, ATM-LAN2, and ATM-WAN) are defined and managed in only one management system by plural subnetwork managers(SNM1, SNM2, and SNM3) and the linkage management manager(CM1), and unique management of the end-to-end communication path extending over subnetworks is performed without depending upon the kinds of protocols of the end systems and nodes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooperative network management method and system capable of easily and centrally managing end-to-end communication paths across sub-networks.

[0002]

2. Description of the Related Art FIG. 1 shows an outline of the configuration of a network to be managed. For explanation of conventional technology, here,
It is assumed that the communication path P1 is set from the end system E10 in the sub-network SN1 to the end system E32 in the sub-network SN3 via the sub-network SN2.

End systems E10 to E32 are devices for terminating communication paths, and nodes N10 to N31 are devices for relaying and exchanging communication paths. The communication links are links L10 to L33 that connect end systems to nodes or nodes to nodes in a sub-network, or links IL12, IL13, and IL23 (IL: that connect nodes to nodes that span sub-networks).
Inter Link). Here, the sub-networks SN1 to SN3 are a set of one or more nodes and zero or more end systems, and have the same management system (management protocol or management object (MO: Mana).
A set of end systems and nodes having a defined object).

The end system has information on the end of the communication path as an end point management object (end point MO), and the node has information on relay / exchange of the communication path as a relay management object (relay MO). The information of the communication link is derived from the end point MO or the relay MO. End point MO
The relay MOs have the same management system for those belonging to the same sub-network, but have different management systems for different sub-networks.

A conventional network management system is shown in FIG.
It was as shown in That is, a plurality of sub-network managers SNM1 to SNM3 that manage communication links with end systems and nodes in the sub-network constitute a network management system NMS1.

The objects that can be managed by each sub-network manager are the information of the end points MO and the relay MO in the corresponding sub-network, and the communication path P derived from them.
The information of the partial communication paths belonging to the sub-network of the sub-network No. 1 is managed in the management system between the sub-network manager, the end system, and the node.

Sub-network manager SNM1, S
The NM2 and the SNM3 manage the information of the end point MO and the relay MO and the information of the partial communication path of the communication path P1 in their respective management systems.

Therefore, when the conventional network management system is used, the end
Management of the two-end communication path P1, a plurality of sub-network managers SNM1 to S having different management systems are used.
It is necessary to manually associate the information of the partial communication path of the communication path P1 managed by the NM3 with the person who operates the sub network manager.

[0009]

In order to manage the end-to-end communication path across sub-networks by the conventional network management system described above,
There were the following issues.

As the types of sub-network management systems increase, the types of sub-network managers to operate for managing communication paths also increase, making it difficult for the administrator to learn the operation. In addition, the association of the information of the partial communication paths has become complicated.

When the management systems are different, the management objects having the same content may be defined by different names, or the management objects having different content may be defined by the same name. Therefore, centralized management by the sub-network manager has not been easy.

The problem to be solved by the present invention is to easily manage end-to-end communication paths across sub-networks in a network management system, even if the number of sub-network management systems increases. Moreover, even if the management systems between the sub-networks are different, it is necessary to carry out unified management.

[0013]

A cooperative network management system according to the present invention solves the above problems and is as follows.

The cooperative network management system according to the present invention is a cooperation management manager for managing an end-to-end communication path in cooperation with a sub-network manager managing each sub-network and a plurality of sub-network managers. And are hierarchically configured.

The sub-network manager manages and holds, as a sub-path MO, information on a partial communication path within each sub-network among end-to-end communication paths that cross sub-networks.

Here, the sub-path MO is information on a set of end points of a partial communication path, information on a connection state between the end points, and information on a communication link between adjacent sub-networks.

The information of the sub-path MO is derived from the information of the end point MO and the relay MO in the sub-network in the management system between the sub-network manager, the end system and the node. Logical MO that does not depend on the management system of the subnetwork of
Shall be defined as

The management system for defining the sub-path MO, that is, the management system between the cooperation management manager and the sub-network manager, is CMIP (Com) as shown in the embodiment.
monManagement Information
Protocol) or SNM
P (Simple Network Management)
nt Protocol) or RPC (Remote
e Procedure Call). Anyway, it is sufficient if it is uniquely determined between the cooperation management manager and each sub-network manager.

The link management manager links the information of the sub-paths MO managed by each sub-network manager, newly defines the end-to-end communication path information as the end-to-end MO, and holds the information. It is a thing.

End-to-end MO is a sub-path MO
Of the end point of the end-to-end MO from the information of the end-point set of the sub-path MO and the information of the communication link between the adjacent sub-networks. The information on the connection state of the end MO is derived.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, first, each sub-network manager generates information about a partial communication path in its own sub-network as a sub-path MO in each management system.

That is, the sub-network manager obtains information on the end point MO of the end system of one end point,
It obtains information on the relay MO of the communication link and node connected to that end system. Next, the information of the relay MO of the communication link connected to the node and the adjacent node is obtained from the information of the relay MO. In the same manner, continue until the end point information of the other end of the partial communication path is obtained, and the end point set information of the partial communication path, the communication link information between the sub-networks, and the connection state information between the end points. Derive. Similarly, the other sub-network managers also generate their respective sub-paths MO in their respective management systems.

Next, the cooperation management manager acquires the information of the sub path MO from each sub network manager,
It is generated and managed as an end-to-end MO, which is information of an end-to-end communication path that spans sub-networks.

That is, the cooperation management manager transmits information about the end point of a certain subpath MO and information about the communication link between the subnetworks, and information about the end point of another subpath MO and the information about the communication link between the subnetworks. Information is used as a key to associate and obtain the connection relationship between subnetworks. Similarly, by obtaining the connection relationship between the sub-networks one after another, the information of the end-to-end communication path across the sub-networks is generated as the end-to-end MO.

Sub-path MO to end-to-end MO
Since it does not depend on the management system of each sub-network manager when it is generated and managed, it is generated and managed centrally with a unique management system from end to end.

An embodiment of the present invention will be described with reference to FIG.

The sub-networks to be managed are two ATM-LANs and one ATM-WAN.
-WAN-LAN configuration, the communication path is assumed to extend over the sub-network. The communication path P1 is a virtual path (VP: Virtual Path).

The cooperative network management system C-NSM of this embodiment is composed of a cooperative management manager CM1 and LAN management managers SNM1, SNM3 and WAN management manager SNM2 corresponding to three sub-network managers. To do.

LAN management managers SNM1 and SNM
3 is an endpoint M of an ATM terminal in each ATM-LAN 1, 2.
The relay MO of O and ATM-SW is managed by the SNMP management system.

The WAN management manager SNM2 is an ATM
-Manage the relay MO of the node in the WAN with the CMIP management system.

On the other hand, the cooperation management manager CM1 is the LA
The sub-path MOs of the N management manager and the WAN management manager are linked as a management system that does not depend on the management system of the managers described above, and are managed as end-to-end MOs. Here, it is assumed that the management is performed by CMIP.

FIG. 4 shows the information of the sub-path MO and the information of the end-to-end MO.

The information of the sub-path MO held by the LAN management manager SNM1 is the information of the pair of end points of the partial communication path in the sub-network SN1, E10 and N11, the information of the communication link between the sub-networks, IL12 and the connection state between the end points. , UP. LAN management manager SNM1
Sends these pieces of information to the subnetwork SN
It is acquired from the end point MO within 1 and the relay MO. The same applies to the LAN management manager SNM3.

The information of the sub-path MO held by the WAN management manager SNM2 is information of a set of end points of partial communication paths in the sub-network SN2, N20 and N21, information of communication links between sub-networks, IL12 and IL23, between end points. The connection status is UP. The WAN management manager SNM2 acquires these pieces of information by CMIP from the relay MO in the sub-network SN2.

The cooperation management manager CM1 first derives the connection relationship between the sub-networks by associating the information of the inter-sub-network communication link of each sub-path MO.

That is, using the IL12 as a key, the ATM-LA
Deriving that N1 and ATM-WAN are connected,
ATM-WAN and ATM-LAN using IL23 as a key
2 is connected and ATM-LAN1 ~
End-to-end MO of end-to-end communication path P1 across ATM-WAN to ATM-LAN2
Is uniquely defined and managed.

The information on the end points of the end-to-end MO is as follows:
The corresponding information is acquired from the sub-path MO of ATM-LAN1 and ATM-LAN2.

The information on the connection state of the end-to-end MO is derived from the information on the connection state of each sub-path MO.

Although the management systems of ATM-LAN1, 2 and ATM-WAN are different, such as SNMP and CMIP, by unifying the management system of the sub-path MO to CMIP, the cooperation management manager CM1 can manage the inter-network. It is possible to centrally manage the end-to-end communication path that crosses over.

Even if the number of types of sub-network management systems increases, the number of sub-path MO management systems is one. Therefore, the cooperation management manager CM1 can easily establish an end-to-end communication path across sub-networks. Can manage.

[0041]

As described above, according to the present invention, the cooperation management manager is related to the end-to-end communication path M.
O has the effect that when an end system or node failure occurs, the scale and scope of the failure can be centrally obtained end-to-end without analyzing the information of each sub-network manager. Have.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a network configuration.

FIG. 2 is a conventional network management system.

FIG. 3 is a configuration diagram of a cooperative network management system according to an embodiment.

FIG. 4 is a sub-path MO and end-to-end M of the embodiment.
It is the information of O.

[Explanation of symbols]

ATM-LAN1 sub-network ATM-LAN2 sub-network ATM-WAN sub-network C-NSM cooperative network management system SNM1, SNM2, SNM3 sub-network manager

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahiro Araki 3-19-3 Nishishinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation

Claims (2)

[Claims] 1. A sub-network manager that manages a sub-network composed of an end system and a set of nodes, and a management manager for a communication path in the sub-network, which is composed of a subordinate manager
Multiple sub-network managers and cooperative management managers define and manage with a unique management system, and end-systems that span sub-networks do not depend on the type of management protocol of end systems and nodes.
A linked network management method characterized by uniquely managing two-end communication paths. 2. A plurality of sub-network managers holding a management object of a partial communication path of a communication path in a sub-network and a cooperation management manager cooperate with each other, and the cooperation management manager relates the management objects of the plurality of partial communication paths. Centralized management that defines and manages end-to-end management objects, and that does not depend on how to define management information for end systems and nodes, and that manages end-to-end communication paths across subnetworks. The cooperative network management method according to claim 1, further comprising: