JPH05244154A - Network control system - Google Patents

Abstract

PURPOSE:To shorten the time when a fault of a network occurred and a bypass is set. CONSTITUTION:A network control system includes plural monitored controllers NE 6, an NE communication channel which connects these NE 6 to each other, a monitoring controller CONT 1 which monitors the controllers NE 6, a CONT communication channel, 5 which transfers the fault information to the controllers NE 6 from the controller CONT 1 and applies the control to the controllers NE 6 from the controller CONT 1, an anti-NE communication means 10 which performs the communication with the controllers NE 6, a path information table means 11 which checks the transfer destination of a packet, an anti-CONT communication means 7 which performs the communication with the controller CONT 1, a communication control part 8, an intra-CONT communication means 3 which performs the communication with each controller NE 6, an information processing part 2 which holds the means 3 and applies the monitoring control to each controller NE 6, and a network information table means 4 which stores the pass information which are always sent to the controller CONT 1 from each controller NE 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network management system, and more particularly to a network management system for shortening the time from the occurrence of a network failure to the setting of a detour route.

[0002]

2. Description of the Related Art In the conventional network management system, as shown in FIG. 3, each NE 6 stores the contents of the route information table means 11 held by each NE 6 to all NEs adjacent to the NE 6.
N who transmitted using communication means 10 and received the information
E compares the sent route information with the contents of the route information table means 11 held by itself, and the more effective information than the contents of the route information table means 11 held by itself is the received route. If it exists in the information, the content of the own route information table means 11 is updated with the received route information. In this way, conventionally, the route control is performed by the fully autonomous decentralized type of each NE.

[0003]

In such a conventional network management system, since the NEs are completely autonomously distributed,
In the case of a communication failure such as when the communication path between NEs is cut off, because the detour was found based on the route information notified via some NEs, it takes a lot of time until communication can be resumed. There was a problem that it required.

An object of the present invention is to hold a database for network management not only in the monitored and controlled device but also in the monitored and controlled device and forcibly set route information from the monitored and controlled device to the monitored and controlled device. By doing so, the time from the occurrence of a network failure to the setting of the detour is to be shortened.

[0005]

In order to achieve the above object, the present invention provides a plurality of NEs, an NE-to-NE communication path connecting the NEs, and an NE-to-NE communication path as the NE-internal means. An NE communication means for communicating with other NEs via a route, a route information table means for checking a transfer destination of a data packet from the NE communication path, the NE communication means and the route information table means. In a network management system having a communication control unit for holding and periodically exchanging the contents of the route information table means with all the adjacent NEs, thereby updating the contents of the route information table means. CON for monitoring and controlling the NE
T and an inter-CONT communication path for performing transfer of fault information from the NE to the CONT and controlling the CONT to the NE, and as an internal means of the NE, for communicating with the CONT. CONT communication means, CONT internal communication means for communicating with each NE as the CONT internal means, and information processing for holding the CONT internal communication means and performing processing for monitoring and controlling each NE And a network information table means for forcibly setting in each NE a logical connection path between specific NEs, which has a higher priority than the path information table means held by each NE. is there.

[0006]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. In the present embodiment, the CONTs 1 and N that monitor and control the plurality of NEs 6 and the NE-to-NE communication paths 9 and NE6 that connect the NEs 6 to each other.
Inter-CONT communication path 5 for transferring fault information from E6 to CONT1 and for controlling CONT1 to NE6
As an internal means of the NE6, an NE communication means 10 for communicating with another NE 6, a route information table means 11 for checking a transfer destination of a packet, and a CONT communication for performing communication with the CONT 1. It has a means 7 and a communication control section 8 for performing communication processing, and as means inside the CONT 1,
In-CONT communication means 3 for performing communication with each NE 6,
An information processing unit 2 that holds the communication means 3 in the CONT and performs processing for monitoring and controlling each NE 6, and each NE 6 to CON.
It has a network information table means 4 for accumulating route information constantly sent to the CONT 1 through the T-to-T communication path 5.

FIG. 2 is a diagram showing an example of the configuration of the NE in one embodiment of the present invention. In FIG. 2, NE12 and NE
Consider the situation where 22, NE14 and NE18, NE12 and NE14 are communicating. The NE 12 and the NE 22 are logically connected via the NE communication paths 23, 28 and the NE 13. The NE 14 and the NE 18 communicate with each other via the NE communication path 27. The NE 12 and the NE 14 communicate with each other via the NE 13.

The NE 14 and NE 18 transfer a large-capacity file, and the efficiency of the network is low.
Other NEs 15, 16, 17, 19, 20, 20 are other Ns
No communication with E.

C from each NE through the communication path 5 between CONTs
By accumulating the route information constantly sent to the ONT 1 in the network information table means 4 held by the CONT 1,
CONT1 is aware of the current status of the network.

For example, from the NE 12 to the NE communication path 23
Is used to send information to CONT1 that it is logically connected to NE13. From NE13, NE
When the data packet is transferred to 22, the information that the data packet will be sent to the NE NE communication path 28 is notified.

In such a situation, the NE-to-NE communication path 2
Assume that 8 has a problem. Therefore, NE12 and N
Communication between E22 becomes impossible.

The NE 12 can know that a communication failure has occurred by not receiving a reply from the other party within a fixed time. With this as a trigger, CONT
1 is notified of the occurrence of a communication failure. CONT1 is
When the NE 12 is notified of the failure occurrence, the network information table means 4 held by the CONT 1 investigates the route to the partner NE 22 with which the NE 12 was communicating, and the NE 12 makes the NE 12 NE.
It can be seen that communication was performed with the NE 22 via the inter-communication path 23, the NE 13, and the inter-NE communication path 28. Also, NE12
Since there is no abnormality in the communication between the
It can be specified that it is the inter-communication path 28. Therefore, an investigation for finding a detour for logically connecting the NE 12 and the NE 22 again while avoiding the NE NE communication path 28 is started.

In the conventional method, since the situation in which the NE 14 and the NE 18 are communicating is not known, the bypass route is set to the NE 1
It became 2, 13, 14, 18, 22, and as a result, the efficiency deteriorated.

Since the CONT1 grasps the communication status of the NE14 and the NE18, it uses the NE12, 1 as a detour.
CON to select 9,16,17,21,22
The content of the route information table means 11 of each NE is forcibly updated from T1.

[0015]

Since the present invention is configured as described above, the time from the occurrence of a communication failure to the decision of the detour is compared with the time taken to determine the detour of the related art. The effect that it can be shortened is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of an NE according to an embodiment of the present invention.

FIG. 3 is a diagram showing a conventional network management system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 supervisory control apparatus 2 information processing section 3 communication means in CONT 4 network information table means 5 communication path between CONTs 6 monitored control apparatus 7 to CONT communication means 8 communication control section 9 communication path between NEs 10 to NE communication means 11 path information Table means

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location H04Q 11/04

Claims (1)

[Claims] 1. A plurality of monitored and controlled devices (hereinafter referred to as "NEs"), and an NE-to-NE communication path connecting between the NEs,
As the means within the NE, a pair NE communication means for communicating with another NE through the inter NE communication path, a route information table means for checking a transfer destination of a data packet from the inter NE communication path, and the pair In order to perform processing for updating the contents of the route information table means by holding the NE communication means and the route information table means and periodically exchanging the contents of the route information table means with all the adjacent NEs. In a network management system having a communication control unit of
It is called "CONT". ) And the CONT from the NE
An inter-CONT communication path for transferring fault information to the CONT and controlling the CONT to the NE, and as the NE internal means, a CONT communication means for communicating with the CONT, and As CONT internal means, CONT internal communication means for performing communication with each NE, an information processing unit that holds the CONT internal communication means and performs processing for monitoring and controlling each NE, and each NE
Logically connecting routes between specific NEs, which have a higher priority than the route information table means held by
And a network information table means for setting the network management method.