JP6378633B2 - Transmission path management control system, transmission path management control method, and control program - Google Patents

Description

  The present invention relates to a transmission path management control system, a transmission path management control method, and a control program.

  In a telecommunication network, various alarms are notified from a transmission device to a management device (EMS: Element Management System) that manages the transmission device. There has been proposed a method for avoiding an important alarm notification being hindered by a network failure or congestion at this time.

FIG. 11 is a diagram for explaining a telecommunication network in which a plurality of transmission apparatuses and one management apparatus are arranged. FIG. 11 shows notification of an alarm via an adjacent transmission device.
As illustrated in FIG. 11, the management control system 1 includes a plurality of transmission devices 11 _{1 to} 11 ₅ and a management device (EMS) 10 that manages the transmission devices 11 _{1 to} 11 ₅ . The transmission device ₁₁ 1 to 11 ₅ are connected by a communication network 12. The management apparatus 10 and the connection between the transmission devices 11 ₁ to 11 _5, particularly in large public telecommunications network, different data communication networks and communication networks 12 (hereinafter, DCN: that Data Communication Network) It is common to use 13. In the following description, the transmission devices 11 _{1 to} 11 ₅ are collectively referred to as the transmission device 11. The number of transmission apparatuses 11 is arbitrary (however, 2 or more).
Management device 10 is connected to the respective transmission devices ₁₁ 1 to 11 ₅ through the DCN13, manages the transmission device ₁₁ 1 to 11 _5.

The transmission device ₁₁ 1 to 11 _5, and sets a communication path 14 to the communication network 12 connected to the adjacent transmission apparatus. The transmission device ₁₁ 1 to 11 ₅ notifies various alarm (alarm) 15 to the management apparatus 10.
For example, when MPLS (Multi Protocol Label Switching) is used, the communication path 14 corresponds to an LSP (Label Switch Path).
Connection configuration of the transmission devices 11 ₁ to 11 ₅ and the management apparatus 10, the connection configuration of the in-band using the connection structure of the out-of-band, a main signal network transmission device 11 ₁ to 11 ₅ are connected to each other Can be mentioned. By using these in combination, even if out-band communication is not possible, the alarm can be transferred to another transmission apparatus by in-band communication and notified to the management apparatus 10.

As shown in FIG. 11, the transmission device 11 ₁ notifies the alarm 15 to the management apparatus 10 via the DCN13. In this case, the or congestion (the reference sign a see FIG. 11) fault in the communication path between the management device 10 the transmission device 11 _1, in the communication path may not be notified alarm 15. In such a case, the alarm 15 is notified using in-band communication. That is, in-band communication, the transmission device 11 ₁ notifies the alarm 15 through a communication path 14 on the communication network 12 to the transmission apparatus 11 ₂ adjacent, the transmission device 11 ₂ from DCN13 of the adjacent The alarm 15 is notified to the management apparatus 10 via Thus, DCN13 between the transmission device 11 ₁ and the management apparatus 10 of the adjacent not be available in failure or congestion, etc., the alarm 15 is notified further to the management apparatus 10 via the transmission device 11 ₃ earlier.

Meanwhile, if the wide range of DCN13 becomes failure or congestion, the communication between the transmission device ₁₁ 1 to 11 ₅ and the management device 10 becomes difficult. In addition, a large number of alarms are generated, and the alarms 15 are concentrated on a specific transmission device 11 that can be connected to the management device 10. For this reason, congestion is induced in the communication path on the way, and the possibility that an important alarm is discarded on the way increases. If an important alarm is discarded on the way, the management apparatus 10 cannot correctly grasp the state of the transmission apparatus 11.

Patent Document 1 describes an alarm state management device that narrows down and notifies only high-priority alarms.
FIG. 12 is a diagram for explaining the priority control of the alarm state management device described in Patent Document 1 by applying it to FIG. 11.
As indicated by reference numeral a in FIG. 12, the transmission device 11 _3, a fault, regardless of the congestion, and transfers to the management device 10 focuses the alarm 15 in advance high priority. Further, as shown by reference numeral b in FIG. 12, the transmission device 11 _3, a fault, regardless of the congestion, and transfers to the transmission apparatus 11 ₄ adjacent squeezing the alarm 15 in advance high priority.
By applying the technique described in Patent Document 1 to the congestion control of the communication path using the in-band communication, it is possible to give priority notification of important alarms and increase the possibility of relieving important alarms. .

JP-A-6-69923

Masaya Fujiki, Junichi Isobe, “Communication Traffic Theory”, Maruzen Co., Ltd., issued on September 15, 1980 Yukio Takahashi, Hidenori Morimura, “Congestion and Waiting”, Maruzen Co., Ltd., issued July 10, 2001

  However, since the alarm state management device described in Patent Document 1 narrows down and notifies alarms with high priority in advance for the purpose of reducing the processing load of the alarm transmission destination, the alarm 15 is narrowed down regardless of the communication state of the DCN 13. There is a problem. If the alarm 15 is narrowed down, the alarm of the own transmission apparatus that should be notified and the alarm of the adjacent transmission apparatus are lost.

  The present invention has been made in view of such a background, and the present invention relates to a transmission path management control system, a transmission path management control method, and a control capable of notifying a management apparatus of as many alarms as possible from alarms with high importance. The challenge is to provide a program.

In order to solve the above-described problem, the invention according to claim 1 includes a plurality of transmission devices connected by a communication network, and a management device that manages each of the transmission devices via a management network, The transmission apparatus notifies the management apparatus via the management network of an alarm, and if the alarm cannot be notified, notifies the adjacent transmission apparatus of the alarm via a communication path on the communication network. A transmission path management control system for notifying the alarm to the management apparatus via the management network from the adjacent transmission apparatus, wherein the management apparatus has an alarm type when the transmission apparatus generates an alarm; the determination information to determine the priority comprise an alarm priority instruction means to instruct the transmission apparatus, the transmission apparatus notifies its own event And alarm occurrence means that occurs the order of the alarm, when the alarm has occurred, with the on the basis of the determination information instructed by the management apparatus, and priority setting means for setting a priority to occur alarms, the The transmission apparatus sets a high priority of an alarm from a transmission apparatus having a high degree of proximity to itself or a small number of connection stages, and performs alarm notification according to the priority of the alarm. The system.

The invention according to claim 5 includes a plurality of transmission devices connected via a communication network, and a management device that manages each of the transmission devices via a management network. An alarm is notified to the management apparatus via the management network, and if the alarm cannot be notified, the alarm is notified to an adjacent transmission apparatus via a communication path on the communication network, and the adjacent transmission apparatus A transmission path management control method for notifying the management device of the alarm via the management network for determining an alarm type and priority when the transmission device generates an alarm in the management device the determination information includes the alarm priority instruction step of instructing the transmission device, in the transmission device, alarm for notifying its own event And alarm occurrence process that occurs and when an alarm has occurred, has the based on the judgment information instructed by the management apparatus, a priority setting step of setting a priority to occur alarms, the said transmission In the apparatus, a transmission path method is characterized in that the priority of an alarm from a transmission apparatus having a high degree of proximity to itself or a small number of connection stages is set high, and alarm notification is performed according to the priority of the alarm .

The invention according to claim 6 includes a plurality of transmission apparatuses connected by a communication network, and a management apparatus that manages each of the transmission apparatuses via a management network, and the transmission apparatus includes the transmission apparatus An alarm is notified to the management apparatus via the management network, and if the alarm cannot be notified, the alarm is notified to an adjacent transmission apparatus via a communication path on the communication network, and the adjacent transmission apparatus From the computer as the management device constituting the transmission path management control system for notifying the alarm to the management device via the management network, the alarm type and priority when the transmission device generates an alarm. alarm priority instruction means for instructing the determination information to determine the transmission apparatus, it causes to function as a, the transmission device The computer and the alarm occurrence means to raise an alarm to notify their events, when an alarm has occurred, based on the determination information instructed by the management device, priority occurring alarm A priority setting means for setting the alarm, an alarm transmission means for setting a high priority of the alarm from the transmission apparatus having a high degree of proximity to the self or a small number of connection stages, and performing an alarm notification according to the priority of the alarm,
It was set as the control program for making it function as.

In this way, even when the management network fails over a wide range or congestion occurs, necessary alarms can be notified to the management apparatus for as many alarms as possible from alarms with high importance.
In addition, if the local transmission device cannot notify the alarm to the management device, it can transfer the alarm notification request to another transmission device, and the alarm notification of the adjacent transmission device can be remedied without affecting the alarm notification of the local transmission device. can do.
In addition, since the priority of the alarm of the transmission device close to the transmission device that causes the failure is increased, the possibility that a failure alarm having a high importance can be notified can be increased.

The invention according to claim 2 includes a plurality of transmission devices connected by a communication network, and a management device that manages each of the transmission devices via a management network, and the transmission device includes the transmission device An alarm is notified to the management apparatus via the management network, and if the alarm cannot be notified, the alarm is notified to an adjacent transmission apparatus via a communication path on the communication network, and the adjacent transmission apparatus A transmission path management control system for notifying the management device of the alarm via the management network, wherein the management device determines an alarm type and priority when the transmission device generates an alarm. Alarm priority instructing means for instructing the transmission apparatus to determine the determination information, and the transmission apparatus generates an alarm for notifying its own event. Alarm generating means for performing, and priority setting means for setting a priority for the generated alarm based on the determination information instructed by the management apparatus when the alarm occurs, and the transmission apparatus includes: As the communication path for sending an alarm to another transmission apparatus, a normal communication path that does not change the priority assigned to the alarm, a non-prioritized communication path that reduces the priority, or the priority Transmitting means for transferring an alarm using one of the priority communication paths to be increased, and using any one of the three types of communication paths or a combination thereof according to the determination information instructed by the management device And transferring an alarm.

  By doing in this way, if the priority of the alarm generated by itself is higher than the priority of the alarm notified from another transmission apparatus, the notification of the own alarm can be given priority. On the contrary, if the priority of the alarm generated by the self is lower than the priority of the alarm notified from another transmission apparatus, the alarm notification of the adjacent transmission apparatus can be given priority. As a result, it is possible to relieve the alarm notification of the adjacent transmission apparatus without affecting the alarm notification of the own transmission apparatus.

The invention according to claim 3 includes a plurality of transmission apparatuses connected by a communication network, and a management apparatus that manages each of the transmission apparatuses via a management network, and the transmission apparatus includes the transmission apparatus An alarm is notified to the management apparatus via the management network, and if the alarm cannot be notified, the alarm is notified to an adjacent transmission apparatus via a communication path on the communication network, and the adjacent transmission apparatus A transmission path management control system for notifying the management device of the alarm via the management network, wherein the management device determines an alarm type and priority when the transmission device generates an alarm. Alarm priority instructing means for instructing the transmission apparatus to determine the determination information, and the transmission apparatus generates an alarm for notifying its own event. Alarm generating means for performing, and priority setting means for setting a priority for the generated alarm based on the determination information instructed by the management apparatus when the alarm occurs, and the transmission apparatus includes: As the communication path for sending an alarm to another transmission apparatus, a normal communication path that does not change the priority assigned to the alarm, a non-prioritized communication path that reduces the priority, or the priority Transmitting means for transferring an alarm using one of the priority communication paths to be increased, and using any one of the three types of communication paths or a combination thereof according to the determination information instructed by the management device And transferring an alarm.

  In this way, the priority can be set and changed more flexibly according to the operation policy.

According to a fourth aspect of the present invention, when the transmission device transmits an alarm to another transmission device, the alarm is discarded according to the priority of the alarm.

By doing in this way, an alarm can be discarded as needed with priority processing .

  According to the present invention, it is possible to provide a transmission path management control system, a transmission path management control method, and a control program that can ensure communication of as many alarms as possible from alarms of high importance and can notify the management apparatus.

It is a block diagram which shows the transmission path management control system which concerns on embodiment of this invention. FIG. 2 is a diagram illustrating a frame to which priority is given by the MPLS shim header. It is a block diagram which shows the detailed structure of the management apparatus and transmission apparatus of the transmission path management control system which concerns on this embodiment. It is a figure explaining the setting and change of the priority to the alarm of the transmission path management control system of this embodiment. It is a figure explaining the procedure of the transmission path management control method of the transmission path management control system which concerns on this embodiment. It is a figure which shows the procedure (the 1) in the management apparatus and transmission apparatus of the transmission path management control system which concerns on this embodiment. It is a figure which shows the procedure (the 2) in the management apparatus and transmission apparatus of the transmission path management control system which concerns on this embodiment. It is a figure which shows the procedure (the 3) in the management apparatus and transmission apparatus of the transmission path management control system which concerns on this embodiment. It is a figure which shows the procedure (the 4) in the management apparatus and transmission apparatus of the transmission path management control system which concerns on this embodiment. It is a figure which shows the procedure (the 5) in the management apparatus and transmission apparatus of the transmission path management control system which concerns on this embodiment. It is a figure explaining the telecommunication network which arrange | positions the conventional several transmission apparatus and one management apparatus. It is a figure explaining priority control of an alarm state management device given in patent documents 1 by applying to FIG.

A transmission path management control system and the like in a mode for carrying out the present invention (hereinafter referred to as “the present embodiment”) will be described below with reference to the drawings.
FIG. 1 is a configuration diagram showing a transmission path management control system according to an embodiment of the present invention. The same components as those in FIG. 11 are denoted by the same reference numerals. The present embodiment is an example applied to a transmission path management control system in which a plurality of transmission devices and a management device for managing them are arranged on a telecommunication network.
As illustrated in FIG. 1, the transmission path management control system 100 includes a plurality of transmission apparatuses 120 _{1 to} 120 ₅ and a management apparatus (EMS) 110 that manages the transmission apparatuses 120 _{1 to} 120 ₅ . The transmission devices 120 _{1 to} 120 ₅ are connected by the communication network 12. The management device 110 and the transmission devices 120 _{1 to} 120 ₅ are connected via a DCN 13 (an example of a management network). In the following description, the transmission devices 120 _{1 to} 120 ₅ are collectively referred to as the transmission device 120. The number of transmission apparatuses 120 is arbitrary (however, 2 or more).

The management apparatus 110 is connected to each of the transmission apparatuses 120 _{1 to} 120 ₅ via the DCN 13. In addition, an in-band communication path is set on the communication network 12 between the transmission apparatuses 120 _{1 to} 120 ₅ . Here, in-band between the transmission device 120 ₁ and the transmission device 120 _2, between the transmission device 120 ₂ and the transmission device 120 _3, between the transmission device 120 ₃ and the transmission device 120 _{4, and} between the transmission device 120 ₄ and the transmission device 120 _5. Consider a case where a communication path is set.

<Management device 110>
The management device 110 sets and changes determination information (logic) for determining the priority of the alarm when the transmission device 120 generates an alarm for each of the transmission devices 120 _{1 to} 120 ₅ . The management device 110, for example, has major failure information as the alarm type, high priority CoS (Class of Service) value “7” in the case of recovery information, minor failure information, and CoS value in the case of recovery information. “6”, CoS value “5” is set for the device system resource information, and CoS value “4” is set for provisioning traffic information such as expansion. Then, the management device 110 notifies the transmission devices 120 _{1 to} 120 ₅ of logic (judgment information) related to the correspondence between the alarm type and the priority for which these CoS values are set.

In addition, the management apparatus 110 receives alarms from the transmission apparatuses 120 _{1 to} 120 ₅ . Here, a plurality of the same alarms may be received through a plurality of paths. For this reason, the management apparatus 110 deletes duplicate alarms and stores one alarm.
Further, the management apparatus 110 transmits a normal communication path, a non-prioritized in-band communication path, or a prioritized communication path between the transmission apparatuses 120 _{1 to} 120 ₅ to the transmission apparatuses 120 _{1 to} 120 _5. Set or change the band communication path. That is, the management apparatus 110, transmission apparatus 120, the communication path when sending an alarm to the other transmission equipment, the normal communication path which does not change the priority granted to the alarm, reducing the priority non It is set to either the priority communication in-band path or the priority in-band communication path for increasing the priority. Details of a procedure using a normal communication path, a non-prioritized in-band communication path, or a prioritized in-band communication path will be described later. For alarms with high priority, a method that does not reduce the priority of alarms is possible even when using a non-prioritized in-band communication path in consideration of the importance.

<Transmission device 120>
Each of the transmission apparatuses 120 _{1 to} 120 ₅ receives determination information (for example, alarm type and priority in which a CoS value is set) from the management apparatus 110 and determines the priority of the alarm according to the determination information. Set. That is, when an alarm is generated, the transmission apparatus 120 sets a CoS value corresponding to the alarm type in the alarm according to an instruction from the management apparatus 110. After setting the CoS value, this alarm is transmitted to the management apparatus 110. When the DCN 13 cannot be used due to a failure or the like, this alarm is sent to the adjacent transmission apparatus using the communication path. In the example of FIG. 1, when the transmission device 120 ₁ issues an alarm, the alarm is sent to the adjacent transmission device 120 ₂ . If the transmission device 120 _2, as in the transmission apparatus 120 ₃ and the transmission device 120 _1, and sends it to one of the adjacent transmission apparatus are determined in advance. Alternatively, it may be sent to a plurality of transmission apparatuses (here, transmission apparatus 120 ₁ and transmission apparatus 120 ₃ ). In this case, the management apparatus 110 may receive a plurality of the same alarms, leaving one and deleting the other.
In addition, each of the transmission devices 120 _{1 to} 120 ₅ receives an alarm from an adjacent transmission device. When the alarm is received, the alarm is transmitted to the management apparatus 110 via the DCN 13. When the DCN 13 cannot be used due to a failure or the like, it is further transmitted to an adjacent transmission device using a communication path.

  When an alarm is sent to an adjacent transmission device using a communication path, if the communication path is a non-prioritized in-band communication path, the alarm priority is reduced and sent. For example, in the case of a CoS value, “1” is subtracted and transmitted. If the communication path is congested, an alarm is sent out or discarded according to the priority of the alarm. As a method for sending an alarm to a communication path according to priority, various methods such as queue scheduling have been proposed (see Non-Patent Documents 1 and 2). In the present embodiment, the priority setting methods described in Non-Patent Documents 1 and 2 are adopted, and detailed description thereof is omitted.

<CoS value setting>
A specific setting of the CoS value will be described. An example is given assuming application of MPLS (Multi-Protocol Label Switching) -Diffserv (Differentiated Services).
MPLS forwards only the label without looking at the contents of the IP header. In order to realize DiffServ, it is necessary to identify a class by a label. For example, an edge router classifies a packet and writes a mark for identifying the class in an IP header.

FIG. 2 is a diagram illustrating a frame to which priority is given by the MPLS shim header.
In FIG. 2, the MPLS-Diffser has an L2 header, an MPLS shim header, an IP packet (L3), and an L2 trailer, which are composed of layer 2 frames. The MPLS shim header and the IP packet (L3) constitute an MPLS frame. MPLS shim header includes Label (Label Value: Label value), Exp (Experimental bits: Indicates QoS class), S (Bottom of Stack: Indicates bottom label when label stacking), TTL (Time to Live: MPLS TTL) For a total of 32 bits.
In this embodiment, priority control to which MPLS-Diffserv shown in FIG. 2 is applied is performed. The priority setting on the management device and transmission device side uses the MPLS Exp region. The CoS value is set using 3 bits of “Exp” in the MPLS shim header of FIG. Alarm information is included in the IP packet.

Detailed configurations of the management apparatus 110 and the transmission apparatus 120 will be described.
FIG. 3 is a block diagram illustrating the detailed configuration of the management apparatus 110 and the transmission apparatus 120. Transmission apparatus ₁₂₀ 1 to 120 _5, it has the same configuration, taken as an example transmission device 120 ₂ here. Preceding transmission device 120 adjacent to the transmission device 120 ₂ is a transmission apparatus 120 _1, the rear stage of the transmission device 120 is a transmission device 120 _3.

<Detailed Configuration of Management Device 110>
First, the configuration of the management apparatus 110 will be described.
As shown in FIG. 3, the management device 110 includes a management device transmission device communication unit 111, an alarm selection unit 112, an transmission device communication setting unit 113, an alarm reception unit 114, an alarm priority instruction unit 115, and an alarm transmission destination. A setting unit 116 is provided.
Management device transmission device communication unit 111 is responsible for communication function between the transmission device 120 _2.
When the alarm selection unit 112 acquires an alarm from the alarm reception unit 114 and detects a plurality of the same alarms, the alarm selection unit 112 leaves only one alarm and deletes the other according to a predetermined procedure.

Between the transmission device communication setting unit 113 to the transmission device 120 _2, normal transmission device between the transmission unit 261 If you do not want to change the priority when sending an alarm transmission device adjacent case to reduce the priority The non-prioritized transmission apparatus transmission unit 262 is set to use the priority transmission apparatus transmission unit 263 when increasing the priority.
Alarm receiver 114 receives an alarm from the transmission device 120 ₂ by using the function of the management device transmission device communication unit 111.

Alarm priority instruction unit 115, the transmission device 120 ₂ is a corresponding alarm type and priority when occurring an alarm and instructs the transmitting unit 120 ₂ via the management device transmission device communication unit 111. In addition, for example, when the priority given to the alarm is reduced, the alarm priority instruction unit 115 does not change the priority for the alarm given the highest priority, and gives other priorities. Reduce the priority for alarms.

The alarm destination setting unit 116 sets and instructs which transmission device the alarm is transmitted to when the transmission device 120 generates an alarm. Alarm destination setting unit 116, when sending the alarm transmission device 120 ₂ on the transmission device of the adjacent transmission apparatus whether to send an alarm to which the adjacent transmission apparatus via the management apparatus transmission device communication unit 111 120 ₂ is instructed.

<Detailed Configuration of Transmission Device 120>
Next, the configuration of the transmission device 120 ₂ (120) will be described.
As shown in FIG. 3, the transmission device 120 ₂ (120) includes a management device transmission device communication unit 121, an alarm notification unit 122, an alarm notification determination unit 123, an alarm priority change unit 124, an alarm transmission unit 125, and a transmission device. Communication unit 126, normal transmission unit transmission unit 261, non-priority transmission unit transmission unit 262, priority transmission unit transmission unit 263, alarm generation unit 127, priority setting unit 128, alarm priority expression unit 129, An alarm receiving unit 130 and an alarm discarding unit 131 are provided.

The inter-management apparatus transmission apparatus communication unit 121 has a communication function with the management apparatus 110.
When the alarm notification determination unit 123 determines that an alarm that has occurred to the management device 110 can be transmitted, the alarm notification unit 122 notifies the management device 110 of the alarm via the management device transmission-device communication unit 121.
Alarm notification determination unit 123, a failure of DCN13, determines whether the alarm notification to to the management apparatus 110 determines the congestion state, when possible, to determine and notify an alarm to the transmission device 120 ₃ adjacent .

  The alarm priority changing unit 124 holds the instruction content set by the inter-transmission device communication setting unit 113 of the management device 110. When the alarm priority changing unit 124 transmits an alarm to an adjacent transmission device, the alarm priority changing unit 124 reduces the priority given to the alarm according to the contents accumulated in the instruction of the alarm priority instruction unit 115 of the management device 110. To increase, increase, or not change. For example, the alarm priority changing unit 124 reduces the priority of an alarm when transmitting an alarm to another transmission apparatus. For alarms with high priority, a method that does not reduce the priority of alarms even when the priority is reduced is possible.

  The alarm transmission unit 125 holds the contents instructed by the alarm transmission destination setting unit 116 of the management device 110. The alarm transmission unit 125 determines a transmission device to transmit an alarm according to the contents accumulated by the instruction of the alarm transmission destination setting unit 116 of the management device 110 and transfers the alarm to the inter-transmission device communication unit 126. The alarm transmission unit 125 sets another transmission apparatus to which an alarm should be sent when an alarm cannot be notified to the management apparatus 110, and transmits the alarm to the transmission apparatus.

The inter-transmission device communication unit 126 has a communication function with other transmission devices. When sending an alarm to an adjacent transmission device, refer to the judgment of the alarm priority changing unit 124, and when not changing the priority assigned to the alarm, set the priority to the transmission unit 261 between normal transmission devices. The alarm is transferred to the non-prioritized transmission apparatus transmitter 262 when the priority is decreased, and the alarm is transferred to the transmission apparatus 263 between priority transmission apparatuses when the priority is increased. Further, when the communication unit 126 between transmission apparatuses receives an alarm from an adjacent transmission apparatus, the communication unit 126 takes over the alarm to the alarm reception unit 130.
Alarm occurrence section 127, the transmission device 120 ₂ is occurring an alarm to notify their event (e.g., failure state).
The priority setting unit 128 accumulates the correspondence between the alarm type and the priority that is the instruction content instructed by the alarm priority instruction unit 115 of the management apparatus 110. When an alarm occurs, the priority setting unit 128 refers to the correspondence between the alarm type and the priority stored in accordance with an instruction from the alarm priority instruction unit 115 of the management device 110, and assigns a priority to the generated alarm. Set.
The alarm priority expression unit 129 represents the priority of the alarm by 3 bits of “Exp” in the MPLS shim header, and allows the priority setting unit 128 to refer to this.

  The alarm receiving unit 130 receives an alarm from an adjacent transmission device via the inter-transmission device communication unit 126. It is determined whether this alarm is sent to the management apparatus 110 via the alarm notification determination unit 123 or transferred to an adjacent transmission apparatus. About this, the same process as the alarm which arose in the alarm generation part 127 is performed after alarm reception.

  The alarm discard unit 131 discards the alarm according to the priority of the alarm as necessary when transmitting the alarm to another transmission apparatus. The alarm discarding unit 131 sends out an alarm according to the priority before sending out the alarm to the communication path to the adjacent transmission apparatus, and discards the alarm as necessary in accordance with the priority processing. As described above, various methods such as queue scheduling have been proposed for the method of sending an alarm to a communication path according to the priority. In the present invention, these methods are adopted, and are not particularly referred to.

The normal transmission apparatus inter-transmission unit 261 transfers an alarm to the adjacent transmission apparatus 120 using a normal communication path. Further, when the normal transmission apparatus transmission unit 261 takes over the alarm from the transmission apparatus communication unit 126, the normal transmission apparatus transmission unit 261 transfers the alarm to the adjacent transmission apparatus via the alarm discard unit 131 using a normal communication path.
The non-prioritized transmission apparatus transmission unit 262 transfers the alarm to the adjacent transmission apparatus 120 using the non-prioritized communication path. Further, the non-prioritized transmission device-to-device transmission unit 262 uses a non-prioritized communication path.
The transmission unit 263 between prioritized transmission apparatuses transfers an alarm to the adjacent transmission apparatus 120 using the prioritized communication path. Moreover, the priority transmission apparatus inter-transmission unit 263 uses a priority communication path.

Hereinafter, a transmission path management control method of the transmission path management control system configured as described above will be described.
First, an outline of the transmission path management control method will be described.
The transmission path management control system 100 (see FIG. 1) assigns priority to alarms in order to relieve many alarms in descending order of importance from alarms transferred on the communication path when the communication path of in-band communication is congested. It is given. Specifically, the transmission path management control system 100 sets and changes determination information for the management apparatus 110 to determine the priority for each of the transmission apparatuses 120 _{1 to} 120 ₅ . Further, the transmission apparatuses 120 _{1 to} 120 ₅ set the priority to the alarm according to the determination information instructed from the management apparatus 110. The transmission apparatuses 120 _{1 to} 120 ₅ give priority according to the importance of the alarm and send out the alarm.

One alarm with a particularly high priority is a failure alarm. The transmission apparatuses 120 _{1 to} 120 ₅ can prompt quick countermeasures by notifying the management apparatus 110 of the failure alarm when a failure occurs. In the event of a failure, generally, a plurality of transmission apparatuses 120 _{1 to} 120 ₅ often generate an alarm. In addition to the transmission device that is the cause of the failure, the transmission devices 120 _{1 to} 120 ₅ that communicate directly with the transmission device cannot communicate with each other, so that a failure alarm also occurs from these transmission device groups. In addition, the transmission device group ahead is more likely to generate an alarm. That is, it can be considered that the alarm of the transmission device causing the failure and the transmission device having a smaller number of connection stages is more likely to be a failure alarm, and the importance becomes higher. Therefore, when the transmission devices 120 _{1 to} 120 ₅ fail, a failure alarm is generated from the group of transmission devices 120 _{1 to} 120 ₅ having a high degree of adjacency, and it is important to give priority to these. On the other hand, there are limited transmission apparatuses that can notify an alarm to the management apparatus 110 when the DCN 13 is partially broken or congested. Considering the case where the transmission device that can notify the alarm to the management device 110 is selected from the group of the transmission devices 120 _{1 to} 120 ₅ that generate these failure alarms, an alarm from the nearest transmission device is sent at the time of failure. It is necessary to give priority.

<Setting and changing alarm priority>
FIG. 4 is a diagram for explaining setting and changing of the priority for an alarm in the transmission path management control system of this embodiment. In the figure, a thick solid line arrow represents a block part of the corresponding procedure (hereinafter the same applies to each figure).
As indicated by reference numeral a1, a2 in FIG. 4, taken between the management device 110 transmits device 120 _1, and if the fault management apparatus 110 and the communication path between the transmission device 120 ₂ is generated as an example.
As shown by reference numeral b in FIG. 4, the priority of the alarm 150, the transmission device 120 ₁ is applied to have occurred an alarm 150. Here, the case where the subsequent transmission apparatus 120 ₂ adjacent to the transmission apparatus 120 ₁ cannot notify the management apparatus 110 of an alarm due to the failure of the DCN 13 or the like is illustrated. The transmission device 120 ₂ is made to notify the alarm 150, as indicated by reference numeral c in FIG. 4, the transmission device 120 ₃ further subsequent adjacent to the transmission device 120 ₂ priority when sending an alarm 150 Process to decrease the value.
As described above, the priority of the alarm 150 from the transmission apparatus 120 with weak adjacency relation can be set low, and the priority of the alarm 150 from the transmission apparatus 120 with strong adjacency relation can be set high.

On the other hand, the transmission device 120 ₂ is not able by itself to notify an alarm to the management device 110, the next time sending an alarm to the transmission apparatus 120 ₃ adjacent performs processing for setting a low priority. Accordingly, the transmission device 120 ₂ close to the transmission device 120 ₁ has priority over the transmission device 120 ₃ far from the transmission device 120 ₁ . That is, since priority is given to the alarm transmission device 120 _2, is higher than the priority of the alarm priority of the alarm by itself has occurred is notified from another transmission apparatus via the communication path 140 self You can prioritize alarm notifications. On the contrary, if the priority of the alarm generated by itself is lower than the priority of the alarm notified from the other transmission apparatus via the communication path 140, the alarm notification of the adjacent transmission apparatus can be given priority. Thus, it is possible to remedy the alarm notification adjacent transmission apparatus 120 ₃ without affecting the alarm notification transmission unit 120 _2.
Here, in this embodiment, the CoS value is used as the priority. In FIG. 4, the transmission device 120 ₃ in the subsequent stage to take over the alarm 150 from the transmission apparatus 120 ₂ performs a process of sending by subtracting the CoS value by 1.

  In addition, a type is provided in the in-band communication path in order to enable processing to reduce the priority of the alarm 150 as well as processing not to decrease and processing to increase the priority. That is, a normal communication path, a non-prioritized in-band communication path, and a prioritized in-band communication path are provided in the in-band communication path. Then, the transmission device 120 performs a process of decreasing the priority when sending an alarm to the non-prioritized in-band communication path and increasing the priority when sending the alarm to the prioritized in-band communication path. Also, the transmission device 120 does not change the priority when sending to a normal communication path. The management apparatus 110 instructs the transmission apparatus 120 as to which of the three types of communication paths is used, and the transmission apparatus 120 changes the communication path 140 accordingly.

Here, in view of the importance of an alarm with a high priority, a method that does not reduce the priority of an alarm is possible even when a non-prioritized in-band communication path is used.
As a method for sending an alarm to a communication path according to priority, various methods such as queue scheduling have been proposed as described in documents such as Non-Patent Document 1 and Non-Patent Document 2. In the present embodiment, these priority setting methods are adopted and are not particularly mentioned.

Next, a detailed procedure of the transmission path management control method will be described with reference to FIGS.
<Procedure for transmission path management control method>
FIG. 5 is a diagram for explaining the procedure of the transmission path management control method of the transmission path management control system of this embodiment. The numerical value in the lower square (□ mark) in FIG. 5 indicates the priority (set CoS value) of the alarm 150. Further, (a22), (a31), (a32), etc. are alarm names having a CoS value attached for convenience of explanation.
Here, the management apparatus 110 uses a normal communication path 141 that does not change the priority assigned to the alarm, as a communication path when the transmission apparatus 120 sends an alarm to another transmission apparatus transmission apparatus (see FIG. 3). ), The non-prioritized in-band communication path 142 for decreasing the priority, or the prioritized in-band communication path 143 for increasing the priority. FIG. 5 is an example in which a normal communication path 141 and a non-prioritized in-band communication path 142 are used. Without being limited to this example, a normal communication path 141 and a prioritized in-band communication path 143 may be used. Further, all three communication paths may be used.

The set CoS value is “7” to “0” (“7” is the highest priority). The determination logic for setting the priority is, for example, as follows.
“7”: Alarm type is Major and device failure alarm / recovery alarm “6”: Alarm type is Minor and device failure alarm / recovery alarm “5”: Device system resource information “4”: Traffic information for provider

As shown in FIG. 5, the management apparatus 110 is connected to the transmission apparatuses 120 _{1 to} 120 ₅ via the DCN 13.
Management device 110, normal communication path 141 between the transmitting apparatus 120 ₁ and the transmission apparatus 120 _2, and is set between the transmission apparatus 120 ₄ and the transmission device 120 _5. The management device 110, between the non-prioritized-band communication path 142 to the transmission device 120 ₂ and the transmission apparatus 120 _3, and is set between the transmission apparatus 120 ₃ and transmitter 120 _4.
As the logic for determining the priority of the alarm, the management device 110 sets the CoS value to “7” for each of the transmission devices 120 _{1 to} 120 ₅ so that the alarm that notifies major failure information is generated. Each of the transmission apparatuses 120 _{1 to} 120 ₅ sets a priority for the alarm according to the CoS value set by the management apparatus 110.

When the transmission apparatuses 120 _{1 to} 120 ₅ cannot be used due to a failure of the DCN 13 with the management apparatus 110 or the like, the management apparatus 110 is set to transfer an alarm to an adjacent transmission apparatus. Here, the transmission device 120 ₁ as a transmission device adjacent to the transmission device 120 _2, the transmission device 120 ₂ to the transmission unit 120 ₃ (thick solid line see FIG. 5), the transmission apparatus 120 ₃ to the transmission apparatus 120 ₄ (Fig. thick solid line reference 5), the transmission device 120 ₄ is set to forward the alarm to the between the transmission apparatus 120 _5.

As shown in FIG. 5, a major failure occurs in the transmission device 120 ₁ and the transmission device 120 ₃ , and the transmission devices 120 _{1 to} 120 ₄ and the management device 110 DCN13 becomes unavailable a failure between, consider the case DCN13 only between the transmission apparatus 120 ₅ and the management apparatus 110 is available.
First, the transmission apparatus 120 _1, an alarm (a22) is caused CoS value "7". At this time, the normal in-band DCN13 is because it is not available a malfunction (reference numeral a1 in FIG. 5), is set toward the transmitting device 120 ₂ adjacent between the transmission apparatus 120 ₁ and the management device 110 An alarm (a31) is transmitted using the communication path 141 with the CoS value “7”. The alarms (a22) and (a31) are the same.

In the transmission apparatus 120 ₂ receives an alarm (a31), for DCN13 between the transmission device 120 ₂ and the management apparatus 110 is not available at fault (reference numeral a2 in FIG. 5), to the transmission device 120 ₃ adjacent Send an alarm (a32). At this time establishing a non-prioritized-band communication path 142, the transmission apparatus 120 ₂ sends an alarm (a41) of the CoS value "1" only reduced by CoS value "6". The alarms (a32) and (a41) are the same. Because even in the transmission device 120 ₃ that has received the alarm (a41) is the same situation (see reference numeral a3 in FIG. 5), the transmission apparatus 120 _3, CoS to the transmission apparatus 120 ₄ CoS values "1" only reduced by An alarm (a42) with a value “5” is sent out.
Transmission apparatus 120 ₄ which has received the alarm (a42) sends an alarm (s52) toward the transmission apparatus 120 ₅ adjacent. Since inband communication path between the transmission apparatus 120 ₅ and the transmission device 120 ₄ is in a congestion (reference numeral c in FIG. 5), the transmission apparatus 120 ₄ performs the above-described priority processing.

  In FIG. 5, it is assumed that an alarm (a52) with a CoS value “5” and another alarm (a54) with a CoS value “6” use this communication path at the same timing. For this reason, priority processing is performed between both alarms. FIG. 5 shows a case where the alarm (a52) is discarded because the priority is low.

Next, as shown in a thick solid line in FIG. 5, in the transmission device 120 ₃ to notify the major faults, alarms (a44) is caused CoS value "7". As in the case described above, since the use of non-priority reduction-band communication path 142, the transmission unit 120 _3, the alarm (a53) of the CoS value "6" CoS value to the transmission apparatus 120 ₄ dropped to "6" Send it out.
In the transmission apparatus 120 ₄ receives the alarm (s53), and sends to the transmission device 120 ₅ using conventional in-band communication path 141. As described above, since the in-band communication path between the transmission apparatus 120 ₅ and the transmission device 120 ₄ is congested (reference numeral c in FIG. 5), the transmission apparatus 120 ₄ performs the above-described priority processing. Alarm to be sent toward the transmission device 120 ₅ (a54) are, CoS value is "6", a higher priority than CoS value "5" of another alarm described above (a52). Therefore, the transmission apparatus 120 ₄ sends the in-band communication path between the transmission apparatus 120 ₅ and transmitter 120 ₄ congested to the transmission device 120 ₅ utilizes preferentially. The transmission apparatus 120 ₅ receives the alarm (a63), to the management device 110 notifies the alarm (a63) the same priority of the alarm and (a64) (reference numeral b in FIG. 5).

Next, the procedure will be described in reference to the management device 110 transmits device 120 ₂ between the FIGS. 6-10.
<Procedure in the management device 110 transmits device 120 ₂ (Part 1)>
Figure 6 is a diagram illustrating a procedure (No. 1) in the transmission path management management apparatus 110 and the transmission device of the control system 120 ₂ of the present embodiment. Illustrating a procedure for setting the transmission device 120 ₂ corresponding priority alarm type from the management device 110.
First, the management apparatus 110, the alarm priority instruction unit 115 transmits the correspondence information and priority alarm type to the transmission apparatus 120 ₂ via the management device transmission device communication unit 111.
The transmission device 120 _2, the management device transmission device communication unit 121 receives the corresponding priority information to the transmitted alarm type from the management device 110 is transferred to the priority setting unit 128. The priority setting unit 128 stores information on correspondence between the alarm type and the priority.

<Procedure in the management device 110 transmits device 120 ₂ (Part 2)>
Figure 7 is a diagram illustrating a procedure (No. 2) in the transmission path management management apparatus 110 and the transmission device of the control system 120 ₂ of the present embodiment. When the transmission device 120 ₂ sends an alarm to the transmission device adjacent illustrates procedures of setting from the management apparatus 110 to send the alarm transmission device 120 ₂ in which the adjacent transmission apparatus.
First, the management device 110, alarm destination setting unit 116, and transmits to the transmission apparatus 120 ₂ information of the transmission device adjacent to transmit an alarm management apparatus transmitting inter-device via the communication unit 111.
The transmission device 120 _2, the communication unit 121 between the management device transmission apparatus receives information of the adjacent transmission apparatus to transmit an alarm sent from the management device 110, and transfers to the alarm transmission unit 125. The alarm transmission unit 125 accumulates information on adjacent transmission apparatuses to which this alarm is to be transmitted.

<Procedure in the transmission device 120 ₂ and the management apparatus 110 (Part 3)>
Figure 8 is a diagram illustrating a procedure (part 3) in the transmission path management management apparatus 110 and the transmission device of the control system 120 ₂ of the present embodiment. Set when transmission device 120 ₂ is transmitted to the transmission device adjacent the alarm, normal transmission device between the transmission unit 261, the non-priority reduction transmission device between the transmission unit 262, the use of either prioritized transmission device between the transmission unit 263 The procedure to do is shown.
First, in the management apparatus 110, information on whether the inter-transmission apparatus communication setting unit 113 should select the normal inter-transmission apparatus transmission section 261, the non-prioritized transmission apparatus transmission section 262, or the prioritized transmission apparatus transmission section 263. the management device transmission device between via communication unit 111 transmits to the transmission apparatus 120 _2.
The transmission device 120 _2, the communication unit 121 between the management device transmission devices, non-prioritizing transmission device between the transmission unit 262 is transmitted from the management device 110, whether the information is to be selected any prioritized transmission device between the transmission unit 263 Received and transferred to the alarm priority changing unit 124. The alarm priority changing unit 124 accumulates information on which of these should be selected.

<Procedure in the management device 110 transmits device 120 ₂ (Part 4)>
Figure 9 is a diagram illustrating a procedure (No. 4) in the transmission path management management apparatus 110 and the transmission device of the control system 120 ₂ of the present embodiment. In the transmission device 120 ₂ shows a procedure when an alarm has occurred.
First, the alarm is occurring at the alarm occurrence section 127 of the transmission device 120 _2. The priority setting unit 128 sets the priority of the alarm generated by referring to the correspondence between the accumulated alarm type and the priority. For example, when the alarm priority is expressed by an MPLS shim header, the alarm priority expression unit 129 represents the alarm priority by 3 bits of “Exp” of the MPLS shim header (see FIG. 2). The priority setting unit 128 can refer to the priority of the alarm expressed by the alarm priority expression unit 129.
Next, the alarm notification determination unit 123 checks whether it is possible to notify the management apparatus 110 of an alarm using the DCN 13. Alarm notification determination unit 123, if the failure or congestion DCN13 is part unavailable, it is determined that the to send an alarm to the transmission apparatus 120 ₃ adjacent. The alarm notification determination unit 123 determines to notify the management device 110 of an alarm if the DCN 13 is available.

· To send the alarm adjacent to the transmission apparatus 120 ₃ alarm notification determination unit 123, if it is determined to transmit an alarm to the transmission apparatus 120 ₃ adjacent, alarm priority change portion 124, the alarm priority of the management device 110 According to the instruction stored in the priority setting unit 128 according to the instruction from the instruction unit 115, the priority given to the alarm is reduced, increased, or not changed. For example, when the priority is reduced, the CoS value is reduced by 1.
Next, the alarm transmission unit 125 determines a transmission device that is an alarm transmission destination, and transfers the alarm to the inter-transmission device communication unit 126.
For example, when the priority is to be reduced, the inter-transmission-device communication unit 126 transfers the alarm to the non-prioritized inter-transmission device transmission unit 262 destined for the transmission device serving as the alarm transfer destination. The inter-transmission-device communication unit 126 sends an alarm to an adjacent transmission device using the non-prioritization communication path by the non-prioritization inter-transmission device transmission unit 262. At this time, the alarm priority expression unit 129 performs priority processing, and the alarm discard unit 131 discards this alarm as necessary.

When an alarm is transmitted to the management device 110 When the alarm notification determination unit 123 determines that the DCN 13 is available and notifies the management device 110 of an alarm, the alarm notification unit 122 causes the management device transmission apparatus communication unit 121 to transmit the alarm. To notify the management device 110 of the alarm.
Management device 110, alarm receiver 114 receives the alarms transmitted from the transmission apparatus 120 ₂ via the management device transmission device communication unit 111. The alarm receiving unit 114 transfers this alarm to the alarm selecting unit 112.
The alarm selection unit 112 detects a plurality of the same alarms as a response to the possibility that a plurality of the same alarms are transferred through a plurality of routes, and deletes the other ones leaving only one alarm.

Figure 10 is a diagram illustrating a procedure (No. 5) in the transmission path management management apparatus 110 and the transmission device of the control system 120 ₂ of the present embodiment. It shows the procedure when the alarm is transmitted to said transmission device 120 ₂ from the transmission device adjacent.
First, the transmission device 120 _2, the alarm receiver 130, the transmission apparatus 120 adjacent to each other via a transmission device communication unit 126 (where the transmission device 120 ₁₎ receives the alarms from.
Next, alarm notification determining unit 123 forwards the alarm received from the transmission apparatus 120 ₁ to the management device 110, it is determined whether to determine whether to forward to another transmission apparatus. The subsequent procedure is the same as the procedure (No. 4) in FIG.

  As described above, the transmission path management control system 100 according to the present embodiment has the determination information for the management apparatus 110 to determine the alarm type and priority (CoS value) when the transmission apparatus 120 generates an alarm. An alarm priority instruction unit 115 for instructing the transmission apparatus 120 is provided. The transmission apparatus 120 generates an alarm for notifying its own event, and an instruction is given by the management apparatus 110 when an alarm occurs. And a priority setting unit 128 that sets a priority for the alarm that has occurred, based on the determined determination information.

  In the transmission path management control method, the management device 110 instructs the determination information to the transmission device, and the transmission device 120 prioritizes the generated alarm based on the determination information when the alarm is generated. Set.

As a result, the transmission apparatus 120 can ensure communication for as many alarms as possible from alarms with high importance even when the DCN 13 has failed in a wide range or congestion has occurred. Necessary alarms can be notified.
In addition, the transmission layer is not simply a single device, but is connected to the peripheral device based on the concept of a path, and should be preferentially notified to the upper level including alarms of neighboring devices. In this embodiment, the priority (CoS value) is set according to the alarm type, and the priority of the subsequent transmission device that takes over the alarm 150 is dropped (one CoS value is dropped), so that a nearby transmission device is far away. Priority is given to transmission equipment. The alarm notification of the adjacent transmission device can be remedied without affecting the alarm notification of the own transmission device.
Thus, since the priority of the alarm of the transmission apparatus close to the transmission apparatus that causes the failure is increased, the possibility that a failure alarm having a high importance can be notified can be increased.

  In addition, when the own transmission apparatus cannot notify the management apparatus 110 of an alarm, and when sending an alarm to a transmission apparatus further adjacent to an adjacent transmission apparatus, the alarm notification of the own transmission apparatus is set by setting a low priority. The alarm notification of the adjacent transmission apparatus can be relieved without affecting the transmission.

In addition, among the processes described in the above embodiments, all or part of the processes described as being automatically performed can be manually performed, or the processes described as being manually performed All or a part of the above can be automatically performed by a known method. In addition, the processing procedures, control procedures, specific names, and information including various data and parameters shown in the above-described document and drawings can be arbitrarily changed unless otherwise specified.
Further, each component of each illustrated apparatus is functionally conceptual, and does not necessarily need to be physically configured as illustrated. That is, the specific form of distribution / integration of each device is not limited to the one shown in the figure, and all or a part of the distribution / integration may be functionally or physically distributed in arbitrary units according to various loads or usage conditions. Can be integrated and configured.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Further, each of the above-described configurations, functions, and the like may be realized by software for interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function is stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), an IC (Integrated Circuit) card, an SD (Secure Digital) card, an optical disk, etc. It can be held on a recording medium. Further, in this specification, the processing steps describing time-series processing are not limited to processing performed in time series according to the described order, but are not necessarily performed in time series, either in parallel or individually. The processing (for example, parallel processing or object processing) is also included.

12 Communication network 13 DCN (an example of a management network)
100 Transmission path management control system 110 Management device (EMS)
DESCRIPTION OF SYMBOLS 111 Management apparatus transmission apparatus communication apparatus 112 Alarm selection section 113 Transmission apparatus communication setting section 114 Alarm reception section 115 Alarm priority instruction section 116 Alarm transmission destination setting section 120, 120 _{1 to} 120 ₅ Transmission apparatus 121 Between management apparatus transmission apparatuses Communication unit 122 Alarm notification unit 123 Alarm notification determination unit 124 Alarm priority change unit 125 Alarm transmission unit 126 Communication device between transmission devices 127 Alarm generation unit 128 Priority setting unit 129 Alarm priority expression unit 130 Alarm reception unit 131 Alarm discard unit 131 140 Communication path 141 Normal in-band communication path 142 Non-prioritized in-band communication path 143 Non-prioritized in-band communication path 150 Alarm 261 Transmitter between normal transmission apparatuses 262 Transmitter between non-prioritized transmission apparatuses 263 Between prioritized transmission apparatuses Sending Part

Claims (6)

A plurality of transmission devices connected via a communication network; and a management device that manages each of the transmission devices via a management network, the transmission device alarming the management device via the management network If the alarm cannot be notified, the alarm is notified to an adjacent transmission device via a communication path on the communication network, and the management device is transmitted from the adjacent transmission device via the management network. A transmission path management control system for notifying the alarm of
The management device
An alarm priority instruction means for instructing the transmission apparatus with determination information for determining the alarm type and priority when the transmission apparatus generates an alarm;
The transmission apparatus is
An alarm generating means for generating an alarm for notifying one's own event;
Priority setting means for setting a priority for the alarm that has occurred, based on the determination information instructed by the management device when an alarm occurs,
The transmission apparatus is
A transmission path management control system which sets a high priority of an alarm from a transmission apparatus having a high degree of proximity to itself or a small number of connection stages, and performs alarm notification according to the priority of the alarm. A plurality of transmission devices connected via a communication network; and a management device that manages each of the transmission devices via a management network, the transmission device alarming the management device via the management network If the alarm cannot be notified, the alarm is notified to an adjacent transmission device via a communication path on the communication network, and the management device is transmitted from the adjacent transmission device via the management network. A transmission path management control system for notifying the alarm of
The management device
An alarm priority instruction means for instructing the transmission apparatus with determination information for determining the alarm type and priority when the transmission apparatus generates an alarm;
The transmission apparatus is
An alarm generating means for generating an alarm for notifying one's own event;
Priority setting means for setting a priority for the alarm that has occurred, based on the determination information instructed by the management device when an alarm occurs,
The transmission apparatus is
When the self cannot notify the management device of an alarm, and when sending an alarm to a transmission device further adjacent to an adjacent transmission device, the priority is set low, and the alarm notification is performed according to the priority of the alarm. A characteristic transmission path management control system. A plurality of transmission devices connected via a communication network; and a management device that manages each of the transmission devices via a management network, the transmission device alarming the management device via the management network If the alarm cannot be notified, the alarm is notified to an adjacent transmission device via a communication path on the communication network, and the management device is transmitted from the adjacent transmission device via the management network. A transmission path management control system for notifying the alarm of
The management device
An alarm priority instruction means for instructing the transmission apparatus with determination information for determining the alarm type and priority when the transmission apparatus generates an alarm;
The transmission apparatus is
An alarm generating means for generating an alarm for notifying one's own event;
Priority setting means for setting a priority for the alarm that has occurred, based on the determination information instructed by the management device when an alarm occurs,
The transmission apparatus is
As the communication path when sending an alarm to another transmission device,
Normal communication path that does not change the priority assigned to the alarm,
A non-prioritized communication path that reduces the priority, or
Transmission means for transferring an alarm using any of the priority communication paths for increasing the priority,
According to the determination information instructed by the management apparatus, an alarm is transferred using any one or a combination of the three types of communication paths. The transmission apparatus is
The transmission path management control system according to any one of claims 1 to 3 , wherein when transmitting an alarm to another transmission apparatus, the alarm is discarded according to the priority of the alarm. A plurality of transmission devices connected via a communication network; and a management device that manages each of the transmission devices via a management network, the transmission device alarming the management device via the management network If the alarm cannot be notified, the alarm is notified to an adjacent transmission device via a communication path on the communication network, and the management device is transmitted from the adjacent transmission device via the management network. A transmission path management control method for notifying the alarm of
In the management device,
An alarm priority instruction step for instructing the transmission apparatus with determination information for determining the alarm type and priority when the transmission apparatus generates an alarm ;
In the transmission device,
An alarm generation process for generating an alarm for notifying one's own events;
A priority setting step of setting a priority for the alarm that has occurred, based on the determination information instructed by the management device when the alarm has occurred ,
In the transmission device,
A transmission path management control method characterized by setting a high priority of an alarm from a transmission apparatus having a high degree of proximity to itself or a small number of connection stages, and performing alarm notification according to the priority of the alarm . A plurality of transmission devices connected via a communication network; and a management device that manages each of the transmission devices via a management network, the transmission device alarming the management device via the management network If the alarm cannot be notified, the alarm is notified to an adjacent transmission device via a communication path on the communication network, and the management device is transmitted from the adjacent transmission device via the management network. A computer as the management device constituting a transmission path management control system for notifying the alarm to
The alarm priority instruction means transmitting device instructs the determination information to determine the priority level alarm type when occurring an alarm to the transmission apparatus, it causes to function as a,
A computer as the transmission device;
Alarm occurrence means to raise an alarm to notify their own events,
Priority setting means for setting a priority for an alarm that has occurred, based on the determination information instructed by the management device when the alarm has occurred;
An alarm transmission means for setting a high priority of alarm from a transmission device having a high degree of adjacency with itself or having a small number of connection stages, and performing alarm notification according to the priority of the alarm;
Control program to function as.

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