JP3180770B2 - Network management system health check method and system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a network management system, and more particularly to the selection of a monitored device to be subjected to a health check in a network management center.

[0002]

2. Description of the Related Art In a network management system, managed devices to be monitored are classified into three types according to a relative distance from a network management center having a center device of the network management system.

[0003] Devices to be monitored connected directly to the network management center or to the same local area network are connected to a gateway NE (Gateway net).
work equipment).

[0004] A monitored device that is connected to a network management system via another monitored device and that provides a communication path to the other monitored device is connected to an intermediate NE (Intermediate NE). And a monitored device that does not provide a communication path to another monitored device is referred to as an end NE (End NE).

In FIG. 2, the monitored device 2 is a gateway NE, the monitored devices 31 and 32 are intermediate NEs, and the monitored device 4 is an end NE.

Conventionally, a network management system has a health check 51 with each monitored device as shown in FIG. 3 to confirm that a communication path with the monitored device is operating normally. Steps 52, 53, and 54 are performed regularly or irregularly.

[0007]

The above-described network management system has a problem that the load on the processing and communication path of the network management center, particularly the communication path between the network management center and the gateway NE increases.

It is an object of the present invention to provide a health check method of a network management system which is simpler and more effective and does not increase the load on a communication path, and a system thereof.

[0009]

A health check method for a network management system according to the present invention includes a network management system in a network including a plurality of monitored devices and a network management center for managing functions of the plurality of monitored devices. In the health check method of the network management system by the center, when the health check of the farthest monitored device on the same communication path is determined to be normal, the health check of all the monitored devices located in the middle of the communication path is performed. Is omitted.

[0010] Further, the farthest monitored device may be a terminal station having no other monitored device via the device.

Further, when the farthest monitored device is a first monitored device, if the health check of the first monitored device is unsuccessful, the first monitored device is located one device before the monitored device. A health check of the second monitored device is performed, and if the health check of the second monitored device is unsuccessful, the monitored devices are sequentially brought closer to the health check of the monitored device closer to the network center. I do.

[0012] A health check system of a network management system according to the present invention provides a network management system with a network management center in a network including a plurality of monitored devices and a network management center for managing the functions of the plurality of monitored devices. In the health check system, means for selecting the farthest monitored device on the same communication path on the network, and, when the health check of the farthest monitored device is determined to be normal, the health check system is located at an intermediate position on the communication path. Means is provided for omitting the health check of the monitored device and starting the health check of the next communication path.

[0013] When the farthest monitored device is the first monitored device, if the health check of the first monitored device fails to obtain a normal result, one more monitored device is used. The health check of the second monitored device located in front of the device is performed, and if the health check of the second monitored device fails to obtain a normal result, the health check of the immediately preceding monitored device is further performed. Means for sequentially bringing the monitored devices closer together.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a configuration of one communication path of a network, and FIG. 2 is a diagram showing a situation in which a health check target monitored device is selected (hereinafter also referred to as polling) in a health check of the network management system of the present invention. It is.

The network management center 1 of the present invention manages monitored devices 2, 31, 32, and 4. The monitored device 2 is connected directly to the network management center 1 or to the same local area network.

The monitored device 31 is connected to the network management system 1 via the monitored device 2. The monitored device 32 is connected to the network management system 1 via the monitored device 31 and the monitored device 2.
The monitored device 4 is connected to the network management center 1 via the monitored device 32, the monitored device 31, and the monitored device 2.

Next, the operation of the network management center will be described. As shown in FIG. 2, when the health check with the monitored device 4 is completed normally, the network management center 1 checks the health of the monitored devices 2, 31, and 32 with each other.
Do not check.

However, if the calling of the monitored device 4 and the health check are unsuccessful, the health check of the monitored device 32 is performed. If this health check is also unsuccessful, the health check is performed by polling the monitored device 31 and the polling is sequentially shifted to a nearby monitored device. The monitored device up to that point is treated as a failure, and the health check of the monitored device closer to the monitored device for which the health check obtained a normal result is omitted.

In the above embodiment, the farthest end NE4
Is called and the connection test result is normal, and if the call cannot be made properly or the test result is not normal, a monitored device with a normal test result is obtained as shown in FIG. Until that time, polling of NEs close to the network management center is continued.

The health check method of the network management system shown in FIG. 4 polls the NE at the farthest end of the communication path subject to the health check (step 21), calls the NE, and checks the health (step 22). If the health check shows a normal result (step 23), the gateway NE2, which is the NE on the communication path up to the farthest end NE, and the intermediates NE31 and NE3,
The health check in step 2 is omitted (step 24).

If the result of the call of the NE 4 or the health check is not normal (step 2
3), the second NE, Intermediate NE32
Is polled and called to perform a health check (step 25). If the result is normal (step 26),
Gateway NE2 and Intermediate NE
The health check of step 31 is omitted (step 27).

When the call or the health check does not show a normal result (step 26), the intermediate NE 32 polls the immediately preceding NE, the intermediate NE 31, and performs a health check (step 28). ). If the call and the health check are normal (step 29), the health check of the gateway NE is omitted (step 30).
If the result is not normal (step 29), the gateway NE2 also performs a health check (step 28).

Next, a network management system health check system to which the network management system health check method of the present invention is applied will be described with reference to FIG.

A health check system for a network management system according to the present invention is a network management system including a plurality of routes, a plurality of monitored devices for each route, and a network management center 1 for managing the functions of the plurality of monitored devices. This is a health check system of a network management system by a network management center.

The network management center 1 selects a farthest monitored device on the same communication path on the network, and a health check unit 6 for executing a health check.
And a route selection unit that, if it determines that the health check of the farthest monitored device is normal, skips the health check of the monitored device located in the middle on the communication channel and starts the health check of the next communication channel. 7, a restart unit 7 for starting the channel selection unit to call the immediately preceding monitored device on the same route when the farthest monitored device cannot be called, and a storage unit 9. .

When the restarting unit 7 restarts the tuning unit 5, the farthest end monitored device becomes the first monitored device.
If the health check of the first monitored device fails to obtain a normal result, the health of the second monitored device located one device before the monitored device is checked, and the health check of the second monitored device is further performed. If the health check fails or a normal result cannot be obtained, the restart unit 7 is restarted to sequentially bring the monitored devices closer to the health check of the monitored devices closer to the network management center. .

The storage unit 9 stores the monitored devices for each route by station type and in order from the farthest end toward the network management center. Array ranking is also possible.

Each monitored device has a function of holding an incoming call in response to a call from the network management center and returning a response in response to the health check signal.

[0030]

As described above, the health check method of the network management system of the present invention does not check the health of the monitored device on the communication path by checking the health of the farthest monitored device. It has a great effect on shortening time and reducing traffic, and preventing congestion on communication channels.

[Brief description of the drawings]

FIG. 1 is a diagram showing one communication path of a network.

FIG. 2 is a diagram showing a health check target monitored device selection status to which the health check method of the network management system according to the present invention is applied.

FIG. 3 is a diagram showing a health check target monitored device selection method in a conventional network management system health check method.

FIG. 4 is a flowchart of a health check method of the network management system according to the present invention.

FIG. 5 is a functional block diagram of an embodiment of a network management center according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 Network management center 2 Gateway NE 4 End NE 5 Tuning unit 6 Health check unit 7 Restart unit 8 Route selection unit 9 Storage unit 31, 32 Intermediate NE 51, 52, 53, 54 Health check

Continuation of the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) H04L 12/28 H04L 12/26 H04Q 9/00 311

Claims (6)

(57) [Claims] A network management center in a network including a plurality of monitored devices and a network management center for managing functions of the plurality of monitored devices.
In the health check method of the network management system, when the health check of the farthest monitored device on the same communication path is determined to be normal, the health check of all the monitored devices located in the middle of the communication path is omitted. A method for checking the health of a network management system, comprising: 2. The method according to claim 1, wherein the farthest monitored device is a terminal station having no communication path through the device. 3. When the farthest monitored device is a first monitored device, if the health check of the first monitored device is unsuccessful, the first monitored device is located one device before the monitored device. A health check is performed on the second monitored device, and when the health check of the second monitored device is unsuccessful, the target monitored device is sequentially brought closer to the health check of the monitored device closer to the network center. 2. The method for checking health of a network management system according to item 1. 4. In a health check system of a network management system by a network management center in a network including a plurality of monitored devices and a network management center for managing functions of the plurality of monitored devices, the same communication on the network Means for selecting the farthest monitored device on the road; and determining that the health check of the farthest monitored device is normal, omitting the health check of the monitored device located in the middle of the communication path. A health check system for a network management system, comprising: means for starting a health check of a next communication path. 5. The health check system of a network management system according to claim 4, wherein the farthest monitored device is a terminal station having no other monitored device passing through the farthest monitored device. 6. If the farthest monitored device is a first monitored device, and if the health check of the first monitored device fails to obtain a normal result, the monitored device is set to 1 Health check of the second monitored device located in front of the device, and if the health check of the second monitored device fails to obtain a normal result, sequentially proceed to the health check of the monitored device near the network management center. The health check system for a network management system according to claim 4, further comprising means for sequentially bringing the target monitored device closer to the target monitored device.