JPH05244183A - Data network system node control system - Google Patents

Abstract

PURPOSE:To make an efficient node control by transmitting the node control information from the network management system to a virtual subscriber for the required node network management through the inter-office line via a subscriber line. CONSTITUTION:When there is no fault in each inter-office line, connection calls CA-CD are determined after the initial setting of the network management system NMS. As the network management system NMS and the station rode D are connected via station nodes A and B to the connection call CD, that is, through a subscriber line ab, station node A, inter-office line a'b, station node B, to inter-office line b'd, node control information from the network management system NMS is sent through the connection call CD to a virtual subscriber DP of the station node D. The virtual subscriber DP receiving the node control information I analyzes the content of the reception information and converts it into the node internal control information, activating the task T. At the fault of the inter-office line, the alternative route is secured by changing the path of the inter-office line.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a node control method in a data network system comprising a data network having a plurality of nodes and a network management system for maintaining and operating each node of the data network. is there.

[0002]

2. Description of the Related Art Conventionally, in this type of data network system, the connection between the network management system and each node is
It is done individually by dedicated lines.

[0003]

Therefore, in the conventional data network system, the number of leased lines increases with the increase in the number of nodes, and it is an object of the present invention to secure a detour route after a failure of the leased line. As a result, it was not possible to perform efficient node control because a special line was required.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a virtual subscriber for network management is provided at each node, and a loop is formed between nodes at an interoffice line. A network management system is connected to a predetermined node via a subscriber line, and node control information from the network management system is added to a virtual node for network management of a desired node via an inter-office line via a subscriber line. The virtual subscriber for network management, which is transmitted to the user and receives the node control information, converts the received information into the node internal control information.

[0005]

According to the present invention, therefore, when the node control information is transmitted from the network management system, it is received by the network management virtual subscriber of the desired node through the subscriber line and the interoffice line.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The data network system node control method according to the present invention will be described in detail below.

FIG. 1 is a system configuration diagram showing an embodiment of a data network system to which the present invention is applied.

In the figure, N is a station node A, B, C,
A packet network, NMS, provided with D is a network management system for maintaining and operating the station nodes A, B, C, D of this packet network N.

In this embodiment, the network management system NMS
Is connected to a station node A via a subscriber line ab. Also, station nodes A and B, B and D, D and C, C and A
Are inter-station lines a'b, b'd, c'd ', a ", respectively.
It is connected in a loop at c.

The subscriber line ab and the interoffice line a'b,
A "c, b'd, c'd 'can be connected to a plurality of calls by packet multiplexing.

Subscriber circuits b "x,
General subscribers x, y are connected via d "y.

At the station nodes A, B, C, D, network management virtual subscribers (hereinafter simply referred to as virtual subscribers) AP, BP, C.
P and DP are provided. When the virtual subscriber is connected to the network management system NMS, the virtual subscriber analyzes the received information and activates the corresponding processing.

The interoffice line does not distinguish between calls between general subscribers and calls between the network management system NMS and virtual subscribers.

At the time of initial setting, the network management system NMS performs call setting for transmitting node control information with virtual subscribers of each station node, and connection calls CA, C for each station node A, B, C, D.
Manages B, CC, and CD.

Now, assume that the network management system NMS sends node control information to the station node D.

In a normal state in which no fault has occurred in each inter-office line, after initial setting of the network management system NMS, FIG.
Connected calls CA, CB, CC and CD are defined as shown in FIG.

The network management system NMS and the station node D are
Because the connection call CD is connected via the station nodes A and B, that is, the subscriber line ab → the station node A → the station line a'b → the station node B → the station line b'd. The node control information I from the network management system NMS is transmitted to the virtual subscriber DP of the station node D via the connection call CD. Virtual subscriber D receiving node control information I
P analyzes the content of the received information, that is, converts it into node internal control information, and activates the task T.

On the other hand, for example, if a failure occurs in the inter-office line b'd, after the initial setting of the network management system NMS, FIG.
Connected calls CA, CB, CC, and CD are defined as shown in FIG.

In this case, the network management system NMS and the station node D use the detour function of the packet network N.
Connected call C via station nodes A and C by changing the route of the inter-office line
Connect with D. That is, the network management system NMS and the station node D are connected by a route of subscriber line ab → station node A → interoffice line a ″ c → station node C → interoffice line c′d ′. The node control information I from the NMS is transmitted via the bypass connection call CD to the virtual subscriber DP of the station node D. The virtual subscriber DP receiving the node control information I analyzes the content of the received information. , Task T is started.

As described above, according to the present embodiment, no separate leased line is required between the network management system NMS and the station nodes A, B, C and D, and when there is an inter-station line failure, the inter-station line Since the detour route is secured by changing the route of, the efficient node control can be performed.

[0021]

As is apparent from the above description, according to the present invention, the node control information from the network management system is transmitted via the subscriber line to the virtual subscriber for network management of the desired node via the interoffice line. Since it is supposed to be transmitted, there is no need for a separate dedicated line between the network management system and each node,
Further, when a failure occurs, it is possible to change the route of the inter-office line and secure a detour route, so that efficient node control can be performed.

[Brief description of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of a data network system to which the present invention is applied.

FIG. 2 is a connection call CA, CB, CC after the initial setting of the network management system NMS when a failure occurs in the inter-office line b′d.
The figure which shows the state of CD.

[Explanation of symbols]

 N packet network I node control information T task NMS network management system A, B, C, D station node AP, BP, CP, DP network management virtual subscriber ab, b "x, d" y subscriber line a'b , B'd, c'd ', a "c Inter-station line CA, CB, CC, CD connection call

Claims (1)

[Claims] 1. A data network comprising a plurality of nodes, and maintenance / maintenance of each node of the data network.
In a data network system including a network management system that operates, a virtual network management network subscriber is provided in each node, and each node is connected in a loop with an interoffice line to connect a subscriber line to a predetermined node. The network management system is connected via the network management system, and the node control information from the network management system is transmitted to the virtual network management virtual subscriber of the desired node via the subscriber line and the interoffice line. A data network system node control method, wherein the virtual subscriber for network management receiving the control information converts the received information into the node internal control information.