JPH02246645A - Network monitor system - Google Patents

Abstract

PURPOSE:To suppress a secondary alarm of an opposite communication equipment and to detect power interruption of the opposite communication equipment immediately by allowing a network port section to form a loopback path to an intended power supply interruption. CONSTITUTION:When power supply interruption takes place in a 3rd communication equipment, a signal path of loopback from an input (1) to an output (3) is formed by a relay 311. Thus, the data from a 1st communication equipment 1 to a 3rd communication equipment 3 is looped back at a network port section 31 of the 3rd communication equipment 3 as it is and returns to the 1st communication equipment 1. Thus, the 1st communication equipment 1 sends back fault information of power interruption of the 3rd communication equipment 3 to a network monitor 100 to mask the monitor with respect to the polling from the network monitor equipment 1. That is, alarm input against an equipment alarm or the like from the 3rd communication equipment 3 of the equipment opposite to the 1st communication equipment 1 is suppressed through the loopback path formed in the case of power interruption.

Description

[Detailed Description of the Invention] [Summary] Regarding a monitoring method for communication equipment in a network using a dedicated line such as a high-speed digital line, the present invention simplifies alarm masking processing caused by power outages of communication equipment on a daily basis, and prevents noise caused by power failure. For the purpose of quickly detecting power outages, external The polling information inputted from the device to the own device is transferred to the opposite device, the operation status signal obtained by detecting the operation status of the opposite device is returned to the own device as a response signal to the polling information, and monitoring information of the opposite device is generated. and each control unit that processes the polling information from the control unit of its own device toward the opposite device, and mediates the reception of the response signal returned from the control unit of the opposite device. When the respective power supplies supplied to the first communication device and the second communication device through the network port section of the network port section are cut off due to a failure, the input when the respective power supplies are normal. Output point ■ from point [1]
Each relay is provided to form a loopback path that switches the signal path from the input point [1] to the other output point [3], and each relay is activated when the power is intentionally cut off. By forming a loopback path and returning the polling information received by each communication device whose power has been cut off to each of the control units without any processing, the operator can Configure healthy network monitoring without intervention.

[Industrial Field of Application γ] The present invention relates to a monitoring method for communication devices in a network using a dedicated line such as a high-speed digital line.

Originally, communication devices are supposed to operate 24 hours a day, and for this reason, an alarm goes off when the power is turned off in everyday life. Therefore, it is necessary for an operator to intervene in order to ensure stable operation of the communication device.

This device provides an alarm processing method necessary for stable operation of these daily communication devices.

[Conventional technology]

FIG. 3 is a diagram illustrating an example of a conventional network, and is a diagram illustrating an alarm processing method due to power cutoff of a communication device. Further, FIG. 4 is a diagram showing another example of a conventional network, and is a diagram showing a method of monitoring the power supply, etc. of a communication device. In FIGS. 3 and 4, 1 is a first communication device, 2 is a second communication device, IO is a high-speed digital line, 101 is a first line termination unit (hereinafter referred to as DSU), and 102 is a second communication device. The number 100 shown in FIG. 4 is a network monitoring device.

The first communication device 1 and the second communication device 2 in the networks shown in FIGS. 3 and 4 are connected to the first DSUIOI.
and the high-speed digital line 10, which is a dedicated line, and the second D
They are connected oppositely via the SU 102, and data is transmitted from the first communication device 1 to the second communication device 2, or from the second communication device 2 to the first communication device 1, and The network monitoring device 100 monitors network failures including power-off of the second communication device 2.

In FIG. 3, for example, when turning off the power of the second communication device 2, the second D
There is no signal sent to S U2O5, and the second DSU
102 detects the interruption of the signal from the second communication device 2 and sends a device alarm to the first communication device 1, and the first communication device 1 receives this device alarm and transmits the device alarm to the second communication device. 2, it is necessary to perform alarm masking to eliminate the influence of the alarm from the first communication device 1 from the second communication device 2. Therefore, in order to prevent an alarm from being raised in the first communication device 1 due to the power cut off of the second communication device 2, it is necessary to notify a central monitoring center (not shown) of the power cut in advance and receive the notification. The operator of the central monitoring center needs to set an alarm mask so that the device whose power is to be cut off is excluded from the monitoring target.

Note that setting the alarm mask in this case also increases the burden on the operator when monitoring a network connecting a plurality of devices.

Next, a method for monitoring failures in power sources, etc. using a network monitoring device is performed using the network shown in FIG. Generally, when there are multiple communication devices and these multiple communication devices are connected by a network, for example, when a second communication device is connected to the first communication device 1, the first communication device Failure monitoring of the second communication device 2 by
The network monitoring device 100 sends polling several times to the second communication device 2 via the first communication device 1, and the network monitoring device 100, which receives a response to each poll, monitors the operating status of the second communication device 2. I understand. In the case of monitoring based on such polling responses,
For example, in order to know if the second communication device 2 has become completely unable to communicate due to a power outage due to a power failure, resend polling to the second communication device 2 several times, and if no response is returned, then It is determined that the second communication device is unable to communicate. That is, the network monitoring device 100
repeats polling a predetermined number of times after the power is cut off due to a power failure, and if there is no response from the second communication device 2 after the monitoring time t, the second communication device 2 becomes inoperable. The network monitoring device 100 determines that this is the case, sends a second communication device non-response signal, stops sending data from the first communication device 1 to the second communication device 2, and performs the next operation. I'm going to move on.

[Problem to be solved by the invention]

Therefore, when monitoring communication devices placed opposite each other,
■Requires operator intervention for alarm mask processing, increasing operator workload. (2) Furthermore, in the case of a failure monitoring method in which polling is repeated several times, there is a problem that a specified time is required for detecting a failure, resulting in a delay in the time to start retransmission to other communication devices.

SUMMARY OF THE INVENTION The present invention aims to simplify alarm masking processing caused by daily power outages in communication devices, and to quickly detect power outages even in the event of power failures.

[Means to solve the problem]

In the present invention, as shown in FIG. 1, a first communication device 1 and a second communication device 2 are arranged facing each other to monitor a network, and each is provided as its own device or an opposite device. The polling information input from the external device to the own device is transferred to the opposite device, the operational status of the opposite device is detected, and the obtained operation status signal is sent back to the own device as a response signal to the polling information to monitor the opposite device. Each controller 13.23 that processes the polling information from the controller 13.23 of its own device is sent to the opposite device, and the polling information is sent back from the controller 13.23 of the opposite device. Each network port section 11.21 serves as an intermediary for receiving the response signal.
Then, when the respective power supplies 12.22 supplied to the first communication device 1 and the second communication device 2 via the network port section 11゜21 are cut off due to a failure, the respective power supplies 12.22 The signal path from input point [1] to output point ■ when is normal is from input point [1] to other output point [
Relays 111 and 211 are provided to form a loopback path for switching to a signal path to 3], and each relay 111 and 211 is operated to form a loop bank path when an intentional power failure occurs. By returning the polling information received by each communication device whose power has been cut off to each of the control units 13 and 23 without any processing, a normal network can be established without operator intervention. Configure to monitor.

[For production]

In the present invention, as shown in FIG. 1, the first communication device 1 and the second communication device 2 each include the above-mentioned control section 13.23, network port section 11.21, and power supply 12.22. The relays 111 and 211 of the self-communication device whose power has been intentionally cut off are automatically operated to form a loopback path, and the relays 111 and 211 of the self-communication device whose power has been intentionally cut off are arranged opposite to one end and the other end of the high-speed digital line 10, and the self-device The polling information from the server is returned as is.

Therefore, it is possible to monitor the opposite device by using the fact that the returned monitoring signal of the opposite device is the same as the polling information transferred from the own device.

〔Example〕

FIG. 2 is a diagram showing an example of the network of the present invention.

In the figure, ■, 2.3 are communication devices, and the first communication device 1 is the buffer A of the relays 111 and 112, 113
It consists of a network port section 11 consisting of a double-width switch of buffer B, a power supply 12, and a control section 13. Note that the second communication device 2 and the third communication device 3, which have the same configuration as the first communication device 1, are given different numbers from the first communication device 1 in order to distinguish the configuration of each device. be. Also 1
01 is a first DSU, 102 is a second DSU, 103 is a third DSU, 10 is a high-speed digital line, and 100 is a network monitoring device; The communication device 2 is a first DSUlo
The first communication device 1 and the third communication device 3 are also connected opposite to each other via a high-speed digital line 10, which is a dedicated line, and a second DSU 102. The data transmission/reception communication between the first communication device 1 and the second communication device 2 and the data transmission/reception communication between the first communication device 1 and the third communication device 3 are mutually controlled. The network monitoring device connected to the first communication device 1 monitors network failures including power outages.
00 is the same as the conventional example shown in FIGS. 3 and 4.

In the configuration of such a device, the circuit of the present invention includes relays I11 . Relay 211. This is realized by configuring a loopback path using the relay 311.

In normal operation, the network monitoring device 100 performs polling, which polls through the control section 13 in the first communication device 1, the buffer A of the network port section 11 112, the relay 111. A polling signal is sent to the first DSUlol, and one polling signal branched at the first DSUIOI is sent to the second DSU 102. Relay 211 in network port section 21 of second communication device 2
It passes through the signal path (■-■) and is transferred to the control unit 23 of the second communication device 2 through the buffer A 212. Control part 2
At this time, 3 sends out the information monitoring the operating status of its own device, passes through buffer B of 213, second DS U2O5, high-speed digital line 10, and sends it to the first DS UIOI,
113 and the control unit 13 to send back information monitoring the operating state of the second communication device 2 to the network monitoring device 100 for monitoring. Similarly the first DSU
Other polling signals branched at IOI are sent to the third DS
U2O5, passing through the signal path of the relay 311 in the network port section 31 of the third communication device 3, 31
The controller 33 of the second communication device 3 passes through the buffer A of the second communication device 3.
The controller 33 sends out a signal monitoring the operating state of the own device, and sends the signal to the buffer B 313.

Pass through the third DSU U2O5, high-speed digital line 10.

Monitoring is performed by sending back information on the operational state of the second communication device 2 to the network monitoring device 100 through the first D S Ulol, the buffer B of the 113, and the control unit 13.

On the other hand, if a power outage occurs in the third communication device 3, for example,
A signal is sent from the power supply 32 of the third communication device 3 and input to the relay 311, and the relay 311 forms a loopback signal path from the input [1] to the output [1]. Therefore, data (including polling signals) from the first communication device 1 to the third communication device 3 is returned as is at the network port unit 31 of the third communication device 3 and sent to the first communication device 1.
come back to.

The first communication device 1 detects that the polling information sent by the first communication device 1 is returned as is.
In response to polling from the network monitoring device 1, failure information regarding power-off of the third communication device 3 is sent back to the network monitoring device 100 to mask monitoring of the third communication device 3. That is, the loopback path formed when the power is cut off prevents the input of an alarm such as a device alarm from the third communication device 3 of the device facing the first communication device 1, and further The first communication device 1, which returns the control signal between the first communication device 1 and the third communication device 3 and detects the power-off of the third communication device 3, informs the network monitoring device 100 of the I'm trying to send information about power outages.

Therefore, even if an intentional power outage occurs, the occurrence of a secondary alarm can be suppressed, and even if the network monitoring device 100 monitors each communication device by polling, it is possible to detect the power outage of a communication device at an early stage. This makes it possible to prevent extension of the monitoring cycle due to retries.

3 is a diagram showing an example of a conventional network, and FIG. 4 is a diagram showing another example of a conventional network. The procedure is .

〔Effect of the invention〕

As is clear from the above description, according to the present invention, in the event of an intentional power cut, a loopback path is formed in the network port section, so that the secondary alarm of the opposing communication device is suppressed, and the opposing communication device This is effective in immediately detecting a power outage in a network, and greatly contributes to improving the operability of network monitoring equipment.

[Brief explanation of drawings]

1 is a diagram showing the principle configuration of the present invention, and FIG. 2 is a diagram showing an example of a network according to the present invention, in which 1 is a first communication device, 11 is a network port section, 111 is a relay 12 is a power supply, 13 2 is a control unit, 2 is a second communication device, 21 is a network port unit, 211 is a relay 22 is a power supply, and 23 is a control unit.

Claims (1)

[Claims] In a first communication device (1) and a second communication device (2), which are arranged opposite to each other and are provided as own device or opposite device for monitoring a network, an external The polling information inputted from the device to the own device is transferred to the opposite device, the operation status signal obtained by detecting the operation status of the opposite device is returned to the own device as a response signal to the polling information, and monitoring information of the opposite device is generated. the respective control units (13, 23) that process the polling information from the respective control units (13, 23) of the own device toward the opposite device, and the control units (13, 23) of the opposite device; ), and the first communication device (1) and the second communication device (1) communicate with each other via the network port sections (11, 21). When the respective power supplies (12, 22) supplied to the device (2) are cut off due to a failure, the output point [2] is changed from the input point [1] when the respective power supplies (12, 22) are normal. ] The signal path leading to the input point [
Each relay (111, 21
1), and each relay (111
, 211) to form a loopback path,
The control unit (13
, 23), a network monitoring method is characterized in that a normal network can be monitored without operator intervention by returning the data as is to each of the above.