WO2015143801A1

WO2015143801A1 - Method and apparatus for processing anomaly of clock synchronization network element, and system thereof

Info

Publication number: WO2015143801A1
Application number: PCT/CN2014/082844
Authority: WO
Inventors: 王斌
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-03-26
Filing date: 2014-07-23
Publication date: 2015-10-01
Also published as: CN104954156A

Abstract

Disclosed is a method for processing an anomaly of a clock synchronization network element. The method comprises the following steps: obtaining a current working state of a network element to determine whether the network element is in an abnormal working state; when it is detected that the network element is in the abnormal working state, generating fault information; and sending the generated fault information to a downstream network element. Also disclosed are an apparatus for processing an anomaly of a clock synchronization network element and a system thereof. The method for processing an anomaly of a clock synchronization network element in the present invention avoids the phenomenon that a downstream network element continuously tracks a faulty network element so that an erroneous clock spreads in the network.

Description

The present invention relates to the field of communications technologies, and in particular, to a clock synchronization network element exception processing method, apparatus, and system thereof. BACKGROUND Synchronization Status Message (SSM) is used to pass a clock level in a synchronous timing link. Each network element in the clock synchronization network obtains the clock synchronization status information of the upstream network element by interpreting the SSM, and then performs corresponding operations (tracking, source switching, or holding) on the clock of the local network element according to the information, and the clock of the local network element is The synchronization status information is transmitted to the downstream network element. However, the current clock synchronization network has the following problem: When a certain network element in the network is in an abnormal working state, the network element is likely to output an incorrect clock signal. However, the ITU-TG781 and other standards do not specify how to deal with similar problems. At this time, the network element in the abnormal working state still sends the SSM according to the normal quality level, which causes the downstream network element to mistakenly think that the upstream network element clock is normal. When the downstream NE has multiple optional upper-level clock source devices, the above situation will cause the protocol layer to continue to track the clock source device that is in an abnormal state. The downstream NE cannot make the correct selection, thus making the wrong clock information. Spread in the clock synchronization network. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a clock synchronization network element exception processing method, apparatus, and system thereof having the same inventive concept, which are intended to prevent erroneous clock information from spreading in a clock synchronization network when the network element is in an abnormal state of operation. . To achieve the above object, the present invention provides a clock synchronization network element exception processing method, including the following steps: obtaining a current working state of a network element to determine whether the network element is in an abnormal working state; In the abnormal working state, the fault information is generated; the generated fault information is sent to the downstream network element. Preferably, after the step of sending the generated fault information to the downstream network element, the method further includes: After receiving the fault information, the downstream network element performs processing according to the fault information in a preset processing manner. Preferably, the fault information is modified synchronization state information or synchronization state information that is a non-available state. Preferably, the step of obtaining the current working state of the network element to determine whether the network element is in an abnormal working state is specifically: monitoring the working state of all hardware related to the clock to determine whether the network element is in an abnormal working state, Or by comparing the clock input and output frequency to determine whether the network element is in an abnormal working state. Preferably, after the step of sending the generated fault information to the downstream network element, the method further includes: generating a clock synchronization device fault alarm prompt signal, or sending the generated clock synchronization device fault alarm information to the preset terminal.

The invention further provides a clock synchronization network element abnormality processing device, comprising: a clock monitoring module, configured to acquire a current working state of the network element to determine whether the network element is in an abnormal working state; and the fault information generating module is set to be The fault information is generated when the network element is in an abnormal working state, and the sending module is configured to send the generated fault information to the downstream network element. Preferably, the fault information is modified synchronization state information or synchronization state information that is a non-available state. Preferably, the clock monitoring module is configured to monitor an operating state of all hardware related to the clock to determine whether the network element is in an abnormal working state, or set to compare the clock input and the output frequency to determine whether the network element is abnormally working. status. Preferably, the clock synchronization network element abnormality processing device further includes: a fault alarm notification module, configured to generate a clock synchronization device fault alarm prompt signal, or send the generated clock synchronization device fault alarm information to the preset terminal. The present invention further provides a clock synchronization network element exception processing system, comprising a plurality of network elements, wherein the plurality of network elements form an upstream network element and a downstream network element, wherein each network element comprises: a clock monitoring module, configured to Obtaining the current working status of the network element in which the network element is located to determine whether the network element in which the network element is located is in an abnormal working state. The fault information generating module is configured to generate a fault when the network element where the clock monitoring module is located is in an abnormal working state. The sending module is configured to send the generated fault information to the downstream network element, and the processing module is configured to: after receiving the fault information sent by the upstream network element, process the fault according to the fault information in a preset processing manner. .

The clock synchronization network element exception processing method of the present invention first obtains the current working state of the network element to determine whether the network element is in an abnormal working state, and generates fault information when the network element is in an abnormal working state; The generated fault information is sent to the downstream network element. Therefore, when the network element is in an abnormal working state, the downstream network element can obtain the upstream network element in an abnormal working state by using the fault information, thereby preventing the downstream network element from continuously tracking. A failed network element causes the wrong clock to spread across the network. 1 is a schematic flowchart of a first embodiment of a method for processing an abnormality of a clock synchronization network element according to the present invention; FIG. 2 is a schematic flowchart of a second embodiment of a method for processing an abnormality of a clock synchronization network element according to the present invention; FIG. 4 is a schematic structural diagram of a first embodiment of a clock synchronization network element abnormality processing apparatus according to the present invention; FIG. 4 is a schematic structural diagram of a clock synchronization network element abnormality processing apparatus according to the present invention; FIG. 6 is a schematic structural diagram of a network element in a clock synchronization network element exception processing system according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The invention provides a clock synchronization network element exception processing method. The clock synchronization network element exception processing method of the present invention obtains the current working state of the network element in real time or in real time, generates fault information when the network element is in an abnormal working state, and sends the generated fault information to the downstream network through the network element. After receiving the fault information, the downstream NE can know that the upstream NE is faulty. Then, you can switch to other clock sources or suspend the tracking. This prevents the faulty NE from being abnormal when the NE fails. The clock signal is received by the downstream network element, and the downstream network element continues to transmit, causing the wrong clock to spread in the network.

Referring to FIG. 1, FIG. 1 is a schematic flowchart diagram of a first embodiment of a method for processing an abnormality of a clock synchronization network element according to the present invention. The present invention proposes a first embodiment of a clock synchronization network element exception processing method. In this embodiment, the clock synchronization network element exception processing method includes the following steps: Step S10: Obtain a current working state of the network element to determine whether the network element is in an abnormal working state. Specifically, a clock monitoring may be added to the network element. The module, the clock monitoring module obtains the current working state of the network element periodically or in real time. In this embodiment, the frequency of monitoring the current working state of the network element may be set in advance, and the clock monitoring module acquires the current working state of the network element every interval of a predetermined time interval. In step S20, when the network element is detected to be in an abnormal working state, the fault information is generated. In this embodiment, the fault information is the modified synchronization state information or the synchronization state information of the non-available state. That is, when the network element is in an abnormal working state, the SSM information level sent by the network element is different from the SSM information level sent by the network element when the network element is in normal working. Therefore, the downstream network element can obtain the upstream network element to work abnormally through the fault information. status. Step S30, the generated fault information is sent to the downstream network element. When the network element is in an abnormal working state, the quality of the actual physical connection signal transmitted by the network element to the downstream network element is not guaranteed. However, the standard protocol does not consider this situation, and the downstream network element continues to track the upstream network element. . In this embodiment, when the downstream network element receives the fault information, it can switch to the standby synchronous clock source, stop tracking the upstream network element or other preset processing manners, and the like, thereby preventing the erroneous clock from spreading in the network. When the downstream NE is switched to the alternate synchronous clock source, the corresponding synchronous clock source can be selected according to the priority level of the alternate peer clock source. Specifically, the step of obtaining the current working state of the network element to determine whether the network element is in an abnormal working state is specifically: monitoring the working state of all hardware related to the clock to determine whether the network element is in an abnormal working state, or Compare the clock input and output frequency to determine whether the NE is in an abnormal working state. That is, the first method is: By monitoring the working state of all hardware related to the clock. The control network element generates fault information as long as it detects that the clock-related hardware has abnormal operation (such as hardware device abnormality or unlocking). The second method is as follows: By comparing the clock input and output frequency, if the clock input and output frequency are inconsistent, the NE is in an abnormal working state. At this time, the NE generates fault information. The clock synchronization network element exception processing method in this embodiment firstly determines whether the network element is in an abnormal working state by acquiring the current working state of the network element, and generates the fault information when the network element is in an abnormal working state. Finally, the generated fault information is sent to the downstream network element. Therefore, when the network element is in an abnormal working state, the downstream network element can obtain the upstream network element in an abnormal working state by using the fault information, and the downstream network element is receiving. When the fault information is reached, the switch can be switched to the standby synchronous clock source or the tracking is suspended. This prevents the downstream network element from continuously tracking the faulty network element and causing the wrong clock to spread in the network.

Referring to FIG. 2, FIG. 2 is a schematic flowchart diagram of a second embodiment of a method for processing an abnormality of a clock synchronization network element according to the present invention. The present invention proposes a second embodiment of a clock synchronization network element exception processing method. The difference between the embodiment and the first embodiment is that after the step S30, the method further includes: Step S40: After receiving the fault information, the downstream network element performs processing according to the fault information in a preset processing manner. The processing of the downstream network element in the preset processing manner according to the fault information may be: switching to the standby synchronous clock source or stopping tracking the upstream network element. The present invention provides two preset processing modes, but is not limited to the two preset processing. the way. The downstream network element can obtain the upstream network element in an abnormal working state through the fault information. When the downstream network element receives the fault information, it can switch to the standby synchronous clock source or suspend the tracking, so as to prevent the downstream network element from continuously tracking the faulty fault. Network element, which causes the wrong clock to spread in the network.

Referring to FIG. 3, FIG. 3 is a schematic flowchart diagram of a third embodiment of a method for processing an abnormality of a clock synchronization network element according to the present invention. The present invention proposes a third embodiment of a clock synchronization network element exception processing method. The difference between the embodiment and the first embodiment is that, after the step S30, the method further includes: Step S50: Generate a clock synchronization device failure alarm prompt signal, or send the generated clock synchronization device fault alarm information to the preset terminal. That is, when the network element is found to be in an abnormal working state, the first method is to generate a clock synchronization device fault alarm prompt signal, such as passing the maintenance personnel in the form of sound, text or indicator light. Another method is to send the generated clock synchronization device fault alarm information (including the ID information of the currently faulty network element, etc.) to the preset terminal, and the preset terminal may be the monitoring clock to synchronize the working status of each network element in the network. The monitoring device, when the monitoring device receives the alarm information of the clock synchronization device, can determine the currently faulty network element, thereby facilitating maintenance personnel to perform maintenance on the network element. In this embodiment, when the network element is faulty, the fault alarming alarm signal of the clock synchronization device is generated, or the generated clock synchronization device fault alarm information is sent to the preset terminal, so that the maintenance personnel can conveniently perform maintenance on the network element.

The invention further provides a clock synchronization network element exception processing device. Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a first embodiment of a clock synchronization network element abnormality processing apparatus according to the present invention. This embodiment proposes a first embodiment of a clock synchronization network element exception processing apparatus. In this embodiment, the clock synchronization network element abnormality processing device includes: a clock monitoring module 10, configured to acquire a current working state of the network element to determine whether the network element is in an abnormal working state; The clock monitoring module 10 obtains the current working state of the network element periodically or in real time. In this embodiment, the frequency of monitoring the current working state of the network element may be set in advance, and the clock monitoring module 10 obtains the current working state of the network element every interval of a predetermined time interval. The fault information generating module 20 is configured to generate fault information when the network element is detected to be in an abnormal working state. In this embodiment, the fault information is the modified synchronization state information or the synchronization state information of the non-available state. That is, when the network element is in an abnormal working state, the SSM information level sent by the network element is different from the SSM information level sent by the network element when the network element is in normal working. Therefore, the downstream network element can obtain the upstream network element to work abnormally through the fault information. status. The sending module 30 is configured to send the generated fault information to the downstream network. When the network element is in an abnormal working state, the quality of the actual physical connection signal transmitted by the network element to the downstream network element is not guaranteed. However, the standard protocol does not consider this situation, and the downstream network element continues to track the upstream network element. . In this embodiment, when the downstream network element receives the fault information, it can switch to the standby synchronous clock source, stop tracking the upstream network element or other preset processing manners, and the like, thereby preventing the erroneous clock from spreading in the network. When the downstream NE is switched to the alternate synchronous clock source, the corresponding synchronous clock source can be selected according to the priority level of the alternate peer clock source. In this embodiment, the clock monitoring module 10 is configured to monitor the working status of all hardware related to the clock to determine whether the network element is in an abnormal working state, or the clock monitoring module 10 is configured to compare the clock input and the output frequency to determine the network element. Is it in an abnormal working state? That is, the first method is: By monitoring the working state of all hardware related to the clock. The control network element generates fault information as long as it detects that the clock-related hardware has abnormal operation (such as hardware device abnormality or unlocking). The second method is as follows: By comparing the clock input and output frequency, if the clock input and output frequency are inconsistent, the NE is in an abnormal working state. At this time, the NE generates fault information. In the clock synchronization network element abnormality processing device, the clock monitoring module 10 obtains the current working state of the network element to determine whether the network element is in an abnormal working state, and when the network element is in an abnormal working state, the fault occurs. The information generating module 20 generates the fault information. The last sending module 30 sends the generated fault information to the downstream network element, and the downstream network element processes the fault information in a preset processing manner. Therefore, when the network element is in the non- In the normal working state, the downstream NE can obtain the upstream NEs in abnormal working status through the fault information. When the downstream network element receives the fault information, it can switch to the standby synchronous clock source or suspend the tracking, so as to prevent the downstream network element from continuously tracking the faulty network element and causing the wrong clock to spread in the network.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a second embodiment of a clock synchronization network element abnormality processing apparatus according to the present invention. This embodiment proposes a second embodiment of a clock synchronization network element exception processing apparatus. The present embodiment is different from the foregoing embodiment in that the clock synchronization network element abnormality processing device further includes: a fault alarm notification module 40, configured to generate a clock synchronization device failure alarm prompt signal, or send the generated clock synchronization device failure alarm information To the default terminal. That is, when the network element is found to be in an abnormal working state, the first method may generate a clock synchronization device fault alarm prompt signal, such as passing the maintenance personnel in the form of sound, text or indicator light. The other method is to send the generated clock synchronization device fault alarm information (including the ID information of the currently faulty network element, etc.) to the preset terminal, and the preset terminal may be the monitoring clock to synchronize the working status of each network element in the network. The monitoring device, when the monitoring device receives the alarm information of the clock synchronization device, can determine the currently faulty network element, thereby facilitating maintenance personnel to perform maintenance on the network element. The clock synchronization network element abnormality processing device is provided in the embodiment, and when the network element is faulty, the fault alarm notification module 40 generates a clock synchronization device fault alarm prompt signal, or sends the generated clock synchronization device fault alarm information to the preset. The terminal is convenient for maintenance personnel to perform maintenance on the network element.

The present invention further provides a clock synchronization network element exception processing system. Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a network element in a clock synchronization network element exception processing system according to the present invention. In the preferred embodiment, the clock synchronization network element exception processing system includes a plurality of network elements, and the plurality of network elements constitute an upstream network element and a downstream network element, wherein each network element includes: a clock monitoring module 100, configured to acquire The current working state of the network element in which the network element is located is used to determine whether the network element in which the network element is located is in an abnormal working state. The fault information generating module 200 is configured to generate a fault when the network element where the clock monitoring module is located is in an abnormal working state. The sending module 300 is configured to send the generated fault information to the downstream network element; The processing module 400 is configured to perform processing in a preset processing manner according to the fault information after receiving the fault information sent by the upstream network element. In the clock synchronization network element abnormality processing device of the embodiment, the clock monitoring module 100 obtains the current working state of the network element where the network element is located to determine whether the network element where the network element is located is in an abnormal working state, and the network element where the clock monitoring module is located is abnormal. In the working state, the fault information generating module 200 generates fault information; the sending module 300 sends the generated fault information to the downstream network element, and the processing module 400 of the downstream network element processes the fault information in a preset processing manner, so When the NE is in an abnormal working state, the downstream NE can obtain the upstream NE in an abnormal working state through the fault information. When the downstream NE receives the fault information, it can switch to the alternate synchronous clock source or suspend the tracking. Prevent the downstream network element from continuously tracking the faulty network element and causing the wrong clock to spread in the network.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. The equivalent structural changes made by the description of the present invention and the contents of the drawings, or directly or indirectly applied to other related technical fields, are the same. It is included in the scope of patent protection of the present invention. Industrial Applicability As described above, the clock synchronization network element abnormality processing method, apparatus, and system thereof provided by the embodiments of the present invention have the following beneficial effects: The abnormal clock sent by the faulty network element can be avoided when the network element fails. The signal is received by the downstream network element, and the downstream network element continues to transmit, causing the wrong clock to spread in the network.

Claims

The invention provides a clock synchronization network element exception processing method, including the following steps: obtaining a current working state of a network element to determine whether the network element is in an abnormal working state; and detecting that the network element is in an abnormal working state In the state, generate fault information;

The generated fault information is sent to the downstream network element. The clock synchronization network element exception processing method according to claim 1, wherein the step of transmitting the generated fault information to the downstream network element further comprises:

After receiving the fault information, the downstream network element performs processing according to the fault information according to a preset processing manner. The clock synchronization network element exception processing method according to claim 1, wherein the fault information is modified synchronization state information or synchronization state information of a non-available state. The clock synchronization network element exception processing method according to claim 1, wherein the step of obtaining the current working state of the network element to determine whether the network element is in an abnormal working state is specifically:

Monitor the working status of all hardware related to the clock to determine whether the network element is in an abnormal working state, or compare the clock input and output frequency to determine whether the network element is in an abnormal working state. The clock peer network element exception processing method according to any one of claims 1 to 4, wherein the step of transmitting the generated fault information to the downstream network element further comprises: generating a clock synchronization device fault The alarm prompt signal, or the generated clock synchronization device failure alarm information is sent to the preset terminal. The clock synchronization network element abnormality processing device includes: a clock monitoring module, configured to acquire a current working state of the network element to determine whether the network element is in an abnormal working state;

The fault information generating module is configured to generate fault information when the network element is detected to be in an abnormal working state;

The sending module is configured to send the generated fault information to the downstream network element. The clock synchronization network element abnormality processing apparatus according to claim 6, wherein the fault information is modified synchronization state information or synchronization state information of a non-available state. The clock synchronization network element abnormality processing apparatus according to claim 6, wherein the clock monitoring module is configured to monitor an operating state of all hardware related to the clock to determine whether the network element is in an abnormal working state, or is set to pass Compare the clock input and output frequency to determine whether the NE is in an abnormal working state. The clock peer network element exception processing apparatus according to any one of claims 6 to 8, further comprising:

The fault alarm notification module is configured to generate a clock peer device fault alarm prompt signal, or send the generated clock synchronization device fault alarm information to the preset terminal. 0. A clock synchronization network element exception processing system, comprising a plurality of network elements, wherein the plurality of network elements form an upstream network element and a downstream network element, wherein each network element comprises: a clock monitoring module, configured to obtain its location The current working status of the NE to determine whether the NE is in an abnormal working state.

The fault information generating module is configured to generate fault information when the network element where the clock monitoring module is located is in an abnormal working state;

a sending module, configured to send the generated fault information to a downstream network element;

The processing module is configured to perform processing according to the fault information according to the fault information after receiving the fault information sent by the upstream network element.