WO2016107086A1

WO2016107086A1 - Method and device for optimizing loss monitoring

Info

Publication number: WO2016107086A1
Application number: PCT/CN2015/081178
Authority: WO
Inventors: 张卯安; 李爱民; 陈园园
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-29
Filing date: 2015-06-10
Publication date: 2016-07-07

Abstract

A method and device for optimizing loss monitoring. The method is applied to an operation, administration and maintenance (OAM) entity network element of the Ethernet. The method comprises: a first network element acquiring a first time point of a plurality of network elements, and conducting time synchronization according to the first time point; after the time synchronization, the first network element receiving an enable command for enabling double end loss measurement (DLM) functions of the first network element and a network element interacting with the first network element; and according to the enable command, the first network element negotiating a second time point of uniformly issuing DLM data between network elements with the network element interacting with the first network element using a pre-set protocol carrying time points; and after the negotiation is successful, the first network element issuing the DLM data according to the second time point and then detecting and displaying same.

Description

Method and device for optimizing loss monitoring

Technical field

This paper deals with the field of OAM (Operation, administration and maintenance) of Ethernet networks, and in particular relates to a method and apparatus for optimizing loss monitoring.

Background technique

LM (loss measurement) is one of the performance detection methods in ETH (Ethernet, MAC layer network) OAM. The main function is to test the frame loss rate. The basic definition is: the number of undelivered service frames expressed as a percentage divided by the ratio of the total number of service frames in the time interval T. The number of service frames not delivered here refers to the difference between the number of service frames arriving at the ingress ETH stream contact point and the number of service frames delivered to the egress ETH stream contact point in a point-to-point ETH connection. The ETH-LM can be implemented in two ways: DLM (Double End Loss Measurement) and LMM (Single End Loss Measurement). The principle and problem of the DLM double-end are mainly described here. The end does not exist).

In a point-to-point ME (Maintenance Entity) where loss measurements are to be made, the MEP (Management Entity Group Point) will be maintained for each peer MEP and each priority level to be monitored. The following two local counters:

TxFCl: Counter To counter for unsupervised data frames sent to the peer MEP.

RxFCl: Counter Counter for the unsupervised data frame received from the peer MEP.

The dual-ended ETH-LM is used for active OAM for performance monitoring and can be applied to error management. In this case, in a point-to-point ME, each MEP periodically transmits a double-ended frame with ETH-LM information to its peer MEP to facilitate frame loss measurements at the peer MEP. Each MEP terminates a double-ended frame with ETH-LM information and performs near-end and far-end loss measurements. The MEP periodically transmits CCM frames with the following information elements:

TxFCf: The value of the local counter TxFCl when the CCM frame is transmitted.

RxFCb: local counter RxFCl when receiving the last CCM frame from the peer MEP Value.

TxFCb: The value of TxFCf in the last CCM frame received from the peer MEP.

The transmission of the CCM PDU has a period value equal to the CCM transmission period configured by the transmitting MEP according to the performance monitoring application. The receiving MEP will detect a fault condition of an undesired period if the CCM transmission period is different from the configured value. When the MEP receives a CCM frame, it uses the following values for the measurement of the near-end and far-end loss:

The values of TxFCf, RxFCb, TxFCb of the received CCM frame and the value of the local counter RxFCl when the CCM frame is received.

These values are represented as TxFCf[tc], RxFCb[tc], TxFCb[tc], and RxFCl[tc], where tc is the reception time of the current frame.

The values of TxFCf, RxFCb, TxFCb of the previous CCM frame and the value of the local counter RxFCl when this previous CCM frame was received. These values are represented as TxFCf[tp], RxFCb[tp], TxFCb[tp], and RxFCl[tp], where tp is the reception time of the previous frame.

Frame Loss Far End =|TxFCb[tc] TxFCb[tp]| |RxFCb[tc] RxFCb[tp]|

Frame loss near-end =|TxFCf[tc] TxFCf[tp]| |RxFCl[tc] RxFCl[tp]|

1. A sends a first CCM message to B, which contains A's local transmit count TxFc1(A) and receive count RxFc1(A).

2. After receiving the CCM message, B fills in the local count TxFc1 (B) of B and the received count RxFc1 (B) into the message sent from A, and temporarily stores it.

3/4, repeat the same steps as above, get the same data, and then substitute the formula:

Frame Loss Far End =|TxFC2(A) TxFC1(A)| |RxFC2(B) RxFC1(B)|

Frame Loss Near End =|TxFC2(B) TxFC1(B)| |RxFC2(A) RxFC1(A)|

According to the above process frame loss data, there will be an inevitable reversal in special cases for the following reasons:

First, the dual-ended DLM function requires two simultaneous DLMs to be completed. In the Y.1731 protocol, the default frequency of the DLM is in the millisecond (100ms), but in the actual configuration process, the different configuration time must be at least seconds. Level (>1s), based on 3.5 times the detection time (350ms), One end of the DLM configured in 1s can detect two CCM messages with DLM information, thus achieving the condition for calculating frame loss.

As shown in Figure 1, suppose that DLM is enabled in B first, then A is turned on, and there is a configuration time difference of 1 s in the middle. After B just enables DLM, the first CCM message sent by A is DLM counted, and B has started counting, that is, RxFC1(B) value is not 0, but TxFC1(A) is 0 because A has not yet started the DLM non-existence count. Since the transmission interval is 100ms, the received second CCM message TxFC2(A) field is still 0, and RxFC2(B) is also valued. The condition of frame loss, after substituting into the formula |TxFC2(A) TxFC1(A)| is 0, |RxFC2(B) RxFC1(B)|>0, the former minus the latter value is negative, if using unsigned count, The difference is large and the reversal phenomenon is formed.

Summary of the invention

This paper provides a method and device for optimizing loss monitoring, which effectively eliminates the inversion of the initial counting of DLM due to time difference, makes the calculation of frame loss more accurate, and optimizes the method of loss monitoring.

A method for optimizing loss monitoring is applied to an operation, management, and maintenance of an OAM entity network element, and the method includes:

The first network element acquires a first time point of the multiple network elements, and performs time synchronization according to the first time point;

After the time synchronization, the first network element receives an open command of the double-end loss measurement DLM function of the first network element and the network element that interacts with the first network element;

The first network element performs a second time point for uniformly distributing DLM data between the network elements by using the network element that interacts with the first network element by using a preset protocol carrying a time point according to the start command;

After the negotiation succeeds, the first network element performs detection and display according to the DLM data sent by the second time point.

Optionally, the step of acquiring, by the first network element, the first time point of the multiple network elements, and performing time synchronization according to the first time point, includes:

Obtaining, by the first network element, the first time point of the multiple network elements;

The first network element performs time synchronization with the network element that interacts with the first network element by using a precise time synchronization protocol PTP according to the first time point.

Optionally, the step of performing time synchronization between the first network element and the network element that interacts with the first network element by using a precise time synchronization protocol PTP, according to the first time point, includes:

The first network element performs time synchronization with the network element that interacts with the first network element by using the precise time synchronization protocol PTP according to the first time point to be accurate at least to a millisecond level.

Optionally, the content of the preset protocol includes at least:

The management entity group level identifier of the Ethernet OAM protocol packet, the version identifier of the Ethernet OAM protocol, the subtype packet identifier, the negotiation status FLAG of the Ethernet OAM entity, the packet attribute, the management entity group level ID, and the message exchange mode ID. The identifier, the hour of the time point, the point of the time point, the second of the time point, the millisecond of the time point, and one or more of the end message attribute identifiers.

Optionally, the first network element performs a second time for uniformly transmitting DLM data between the network elements by using the network element that interacts with the first network element by using a preset protocol that carries a time point according to the start command. The steps of negotiation of points include:

Obtaining, by the first network element, an initial DLM state of the first network element and a network element that interacts with the first network element is an invalid state;

The first network element receives a control command that controls a DLM state change;

Transmitting, by the first network element, a request message with the FLAG as a notification to the network element that interacts with the first network element according to the control command;

Receiving, by the first network element, the network element that is in contact with the first network element, the DLM state of the network element that has the FLAG is enabled, and the network element that the first network element interacts with is valid. Stop sending the request message;

After the DLM state of the first network element is in a valid state and the response packet is received, the network element that the first network element interacts with the first network element negotiates successfully.

An apparatus for optimizing loss monitoring is applied to an operation, management, and maintenance of an OAM physical network element of an Ethernet, and the apparatus includes:

The time synchronization module is configured to: obtain the first time point of the plurality of network elements by the first network element, according to the Performing time synchronization at the first time point;

The receiving module is configured to: after the time synchronization, the first network element receives an open command of the double-end loss measurement DLM function of the first network element and the network element that interacts with the first network element;

The protocol negotiation module is configured to: the first network element, according to the open command, use the network element that interacts with the first network element by using a preset protocol that carries a time point to negotiate and deliver DLM data uniformly between the network elements. Second time point;

The detecting module is configured to: after the negotiation succeeds, the first network element sends the DLM data according to the second time point to detect and display.

Optionally, the time synchronization module includes:

The first obtaining submodule is configured to: the first network element acquires the first time point of the multiple network elements;

The time synchronization sub-module is configured to: the first network element performs time synchronization with the network element that interacts with the first network element by using a precise time synchronization protocol PTP according to the first time point.

Optionally, the time synchronization submodule includes:

The time synchronization unit is configured to: perform time synchronization of the network element that interacts with the first network element by using the precise time synchronization protocol PTP according to the first time point to be accurate at least to a millisecond level.

Optionally, the content of the preset protocol includes at least:

Optionally, the protocol negotiation module includes:

The second obtaining sub-module is configured to: obtain, by the first network element, the initial DLM state of the first network element and the network element that interacts with the first network element to be in an invalid state;

The receiving submodule is configured to: the first network element receives a control command for controlling a DLM state change;

a sending sub-module, configured to: send, by the first network element, a request message with the FLAG as a notification to the network element that interacts with the first network element according to the control command;

a control sub-module, configured to: the first network element receives, by the network element that interacts with the first network element, a network element that has the FLAG as a completion response message and the first network element exchanges If the DLM state is a valid state, the sending of the request message is stopped;

The negotiation sub-module is configured to: when the DLM state of the first network element is in a valid state and the response message is received, the network element that the first network element interacts with the first network element negotiates successfully.

A computer readable storage medium storing computer executable instructions for performing the method of any of the above.

In the solution of the embodiment of the present invention, the time difference between the first network element and the other network element is reduced, and the time error of the DLM function is reduced, and then the time point of the DLM data is negotiated by using the protocol with the preset time point. According to the time point, the DLM data is sent out, and the DLM data and processing are detected, so that the device synchronization can be completed, and the inversion of the initial DLM count due to the time difference can be effectively eliminated, so that the calculation of the frame loss is more accurate and optimized. The method of loss monitoring.

BRIEF abstract

FIG. 1 is a schematic diagram of a workflow of a related art DLM;

2 is a schematic diagram of steps of a method for optimizing loss monitoring according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of content of a message according to an embodiment of the present invention; FIG.

4 is a schematic diagram of a negotiation process according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an apparatus for optimizing loss monitoring according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic diagram of implementing DLM by each module according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will now be described with reference to the drawings.

When the two devices are started differently in the related art, the time difference caused by the manual configuration may cause one device to start detecting first, and the other device to start detecting, and the device detected first starts counting. Then, the device that started later does not count, and within this time difference, a count reversal problem occurs.

The embodiment of the present invention provides a method and a device for optimizing loss monitoring. By first synchronizing the time of the network element, and then negotiating a time point of a unified delivery configuration, the DLM data is sent and detected and displayed, so that The achieved synchronization between the devices also avoids the reversal phenomenon and optimizes the loss monitoring.

As shown in FIG. 2, the method for optimizing loss monitoring according to an embodiment of the present invention is applied to an operation, management, and maintenance of an OAM entity network element, where the method includes:

Step 21: The first network element acquires a first time point of the multiple network elements, and performs time synchronization according to the first time point.

Step 22: After the time synchronization, the first network element receives an open command of the double-end loss measurement DLM function of the first network element and the network element that interacts with the first network element.

The open command may be a start command initiated by a user.

Step 23: The first network element performs a second time point for uniformly distributing DLM data between the network elements by using the network element that interacts with the first network element by using a preset protocol carrying a time point according to the start command. ;

Step 24: After the negotiation is successful, the first network element sends and detects DLM data according to the second time point.

Because the network element counts to the peer network element, the CCM message is used as the carrier, but it cannot be all CCM messages. It is necessary to configure the matching CCM message, so there must be a step before calculating the count. 24 detection process.

In step 21 to step 24, by synchronizing the first network element with the other plurality of network elements (step 21), by receiving an open command of the network element that opens the two DLM function interactions (step 22), The time error of the DLM function of the network elements at both ends is reduced, and then the time point of the DLM data is negotiated by using the protocol with the preset time point (step 23), and the DLM data is sent according to the time point, and the detection is performed. DLM data and processing (step 24), so that device synchronization can be completed, and the inversion of the initial DLM count due to the time difference can be effectively eliminated, so that the calculation of frame loss is more accurate, and the loss monitoring method is optimized.

In order to achieve the effect of enabling both parties to simultaneously turn on the DLM, in the method for optimizing loss monitoring in the embodiment of the present invention, step 21 includes:

Step 211: The first network element acquires the first time point of multiple network elements.

Step 222: The first network element performs time synchronization with the network element that interacts with the first network element by using a precise time synchronization protocol PTP according to the first time point.

In the method for optimizing loss monitoring in the embodiment of the present invention, step 222 includes:

Step 2221: The first network element performs time synchronization with the network element that interacts with the first network element by using the precise time synchronization protocol PTP according to the first time point to be accurate at least to a millisecond level.

In the method for optimizing loss monitoring in the embodiment of the present invention, the content of the preset protocol includes at least:

The packet attribute includes the type, length, and value of the packet.

The negotiation is performed by adding a DLMN packet to the original Y1731 protocol. The content of the negotiation is mainly the configuration time. The time can be configured by using the device. The content of the packet is shown in Figure 3, where MEL (Management entity groups level, management) Entity group level): 3BIT (bit). It contains an integer value that identifies the MEG (Management Entity Group) level of the OAM protocol message. Values range from 0 to 7.

Version: 5BIT. It contains an integer value that identifies the version of the OAM protocol, which is always 0.

OpCode (operate code, opcode): 8BIT. The value of this type of message is 2, which is used to indicate a subtype message.

The flag bit is FLAG: 8BIT. Indicates the current negotiation status, 2 indicates that the completion is completed, 1 indicates that the notification is on, and 0 indicates that the notification is closed.

TLV (Type-length-value, type, length and value): 8BIT. It contains the number of offsets of the first TLV in the OAM PDU (Protocol Data Unit) relative to the TLV Offset Value field. The value of this field is associated with the type of OAM PDU. When the TLV offset value is 0, it points to the first byte after the TLV offset value field.

MEG ID: 48 bytes, which contains the MEG ID of the MEG to which the MEP that sends the CCM frame belongs.

MEP ID (IDentity): 2 bytes, used to identify the MEP that sends the CCM frame.

Hours: 6 BIT; sub-category: 6 BIT; seconds: 8 BIT; milliseconds: 22 BIT.

The end message attribute identifies TLV: 16BIT.

In order to implement the negotiation process of the Y1731 new protocol DLMN packet, in the method for optimizing the loss monitoring in the embodiment of the present invention, the step of negotiating in step 23 includes:

Step 231: The first network element acquires an initial DLM state of the first network element and a network element that interacts with the first network element, and is in an invalid state.

Step 232: The first network element receives a control command that controls a DLM state change.

The control command may be an enable control command for controlling a change in the DLM state.

Step 233: The first network element sends, according to the control command, a request message that has the FLAG as a notification open to a network element that interacts with the first network element.

Step 234, the first network element receives the response message with the FLAG being enabled, and the DLM status of the network element that the first network element interacts with is valid. In the state, the sending of the request message is stopped;

Step 235, the DLM state of the first network element is in an active state, and the response report is received. The network element that the first network element interacts with the first network element negotiates successfully.

This scheme can effectively eliminate the inversion problem of the initial DLM count caused by the time difference, which makes the calculation of frame loss more accurate.

As shown in FIG. 4, an example of an embodiment of the present invention is as follows.

Step 401: In the initial state, the DLM states of the A network element and the B network element are both DOWN (invalid state), and after the A network element is enabled from DISABLE (not enabled) to ENABLE (enabled), the A network element is directed to the B network. The element sends a REQUEST message with a FLAG field of 1.

Step 402: The B network element processes the message in the DLM enable state, and responds to the ACK message with the FLAG field being 2, and the state changes to UP (active state); if the DLM is not enabled, the message does not respond;

Step 403: After receiving the ACK packet, the network element A does not send the REQUEST packet.

Step 404, the processing flow of the B network element in sending the REQUEST message is the same as the above;

Step 405: After the A network element and the B network element satisfy the status of UP, and the ACK (answer) message is received, the original Y1731 protocol configuration is enabled to be delivered.

Correspondingly, as shown in FIG. 5, the apparatus for optimizing loss monitoring according to the embodiment of the present invention is applied to operation, management, and maintenance of an OAM entity network element, and the apparatus includes:

The time synchronization module 51 is configured to: acquire, by the first network element, a first time point of the multiple network elements, and perform time synchronization according to the first time point;

The time synchronization may be the time synchronization module 51 that has been implemented by the PTP, or may be added by itself. The time synchronization module 51 is configured to make the subsequent negotiation time an absolute time, so the time synchronization module 51 first synchronizes the time of the two devices, so that the time difference of the last function startup is very small, and the time depends on how small. Time precision of synchronization.

The receiving module 52 is configured to: after the time synchronization, the first network element receives an open command of the double-end loss measurement DLM function of the first network element and the network element that interacts with the first network element;

The opening command may be configured to configure a network element as a manual operation to initiate a command to the network element.

The protocol negotiation module 53 is configured to: the first network element uniformly sends the DLM data between the negotiating network elements by using the network element that interacts with the first network element by using a preset protocol carrying a time point according to the start command. Second time point;

The protocol negotiation module 53 is a new module added to the original Y1731 protocol, and may also be referred to as a new protocol module of the Y1731. The original Y1731 protocol is set on the original protocol module 55.

The detecting module 54 is configured to: after the negotiation succeeds, the first network element sends the DLM data according to the second time point to detect and display.

The detection module 54 is for calculating the last acquired data according to the working hours. The detecting module 54 is only responsible for calculating the numerical value, but in order to display the counting and categorizing, the original protocol module 55 is needed to be solved, and the display can be realized through the display interface of the device. .

The first network element is time-synchronized with the other network elements by the time synchronization module 51, and then the receiving module 52 receives the opening command of the network element that opens the two DLM functions, thereby reducing the time for enabling the DLM function of the network elements at both ends. The error, and then the protocol negotiation module 53 uses the protocol with the preset time point to negotiate the time point for the DLM data to be sent. Finally, the time point detection module 54 detects and processes the sent DLM data, so that the device synchronization can be completed. It can also effectively eliminate the inversion of the initial counting of DLM due to the time difference, making the calculation of frame loss more accurate, and optimizing the method of loss monitoring.

In an apparatus for optimizing loss monitoring according to still another embodiment of the present invention, the time synchronization module 51 includes:

In an apparatus for optimizing loss monitoring according to still another embodiment of the present invention, the time synchronization submodule includes:

The time synchronization unit is configured to: perform, according to the first time point, the time synchronization of the network element that interacts with the first network element by using the precise time synchronization protocol PTP, at least to milliseconds. level.

In an apparatus for optimizing loss monitoring according to still another embodiment of the present invention, the content of the preset protocol includes at least:

In an apparatus for optimizing loss monitoring according to still another embodiment of the present invention, the protocol negotiation module 53 includes:

As shown in Fig. 6, an example of an embodiment of each module of the present invention is as follows.

The time synchronization module 51 completes the synchronization of the multiple devices in time; then manually opens the DLM functions at both ends, and uses the protocol negotiation module 53 newly added by the Y1731 to negotiate the protocol level. After the negotiation succeeds, the configuration of the original negotiation module is delivered; The original protocol module 55 sends the DLM configuration data to the detection module 54 to formally turn on the detection, and then the detection module 54 reports the count back to the original protocol module 55.

It should be noted that the apparatus provided by the embodiment of the present invention is the method for applying the above optimized loss monitoring. The apparatus of the method, then all of the above embodiments of the method of optimizing loss monitoring are applicable to the apparatus, and both achieve the same or similar benefits.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

In the embodiment of the present invention, the time difference between the first network element and the other network elements is reduced, and the time error of the DLM function is reduced, and then the time point of the DLM data is negotiated by using the protocol with the time point, and the DLM data is performed according to the time point. The delivery and detection of DLM data and processing, so that device synchronization can be completed, can also effectively eliminate the inversion of the initial DLM count caused by the time difference, making the calculation of frame loss more accurate, and optimizing the loss monitoring method.

Claims

A method for optimizing loss monitoring is applied to an operation, management, and maintenance of an OAM entity network element, and the method includes:

The first network element acquires a first time point of the multiple network elements, and performs time synchronization according to the first time point;

After the time synchronization, the first network element receives an open command of the double-end loss measurement DLM function of the first network element and the network element that interacts with the first network element;

The first network element performs a second time point for uniformly distributing DLM data between the network elements by using the network element that interacts with the first network element by using a preset protocol carrying a time point according to the start command;

After the negotiation succeeds, the first network element performs detection and display according to the DLM data sent by the second time point.
The method for optimizing loss monitoring according to claim 1, wherein the step of acquiring the first time point of the plurality of network elements by the first network element and performing time synchronization according to the first time point comprises:

Obtaining, by the first network element, the first time point of the multiple network elements;

The first network element performs time synchronization with the network element that interacts with the first network element by using a precise time synchronization protocol PTP according to the first time point.
The method for optimizing loss monitoring according to claim 2, wherein the first network element performs time synchronization with the network element that interacts with the first network element by using a precise time synchronization protocol PTP according to the first time point. Steps, including:

The first network element performs time synchronization with the network element that interacts with the first network element by using the precise time synchronization protocol PTP according to the first time point to be accurate at least to a millisecond level.
The method for optimizing loss monitoring according to claim 1, wherein the content of the preset protocol at least comprises:

The management entity group level identifier of the Ethernet OAM protocol packet, the version identifier of the Ethernet OAM protocol, the subtype packet identifier, the negotiation status FLAG of the Ethernet OAM entity, the packet attribute, the management entity group level ID, and the message exchange mode ID. Identification, hour of the time point, the time The point of the point, the second of the time point, the millisecond of the time point, and one or more of the end message attribute identifiers.
The method for optimizing loss monitoring according to claim 4, wherein the first network element performs a negotiation network with a network element that interacts with the first network element by using a preset protocol carrying a time point according to the open command. The steps of negotiating the second time point of uniformly transmitting DLM data between the elements include:

Obtaining, by the first network element, an initial DLM state of the first network element and a network element that interacts with the first network element is an invalid state;

The first network element receives a control command that controls a DLM state change;

Transmitting, by the first network element, a request message with the FLAG as a notification to the network element that interacts with the first network element according to the control command;

Receiving, by the first network element, the network element that is in contact with the first network element, the DLM state of the network element that has the FLAG is enabled, and the network element that the first network element interacts with is valid. Stop sending the request message;

After the DLM state of the first network element is in a valid state and the response packet is received, the network element that the first network element interacts with the first network element negotiates successfully.
An apparatus for optimizing loss monitoring is applied to an operation, management, and maintenance of an OAM physical network element of an Ethernet, and the apparatus includes:

The time synchronization module is configured to: acquire, by the first network element, a first time point of the multiple network elements, and perform time synchronization according to the first time point;

The receiving module is configured to: after the time synchronization, the first network element receives an open command of the double-end loss measurement DLM function of the first network element and the network element that interacts with the first network element;

The protocol negotiation module is configured to: the first network element, according to the open command, use the network element that interacts with the first network element by using a preset protocol that carries a time point to negotiate and deliver DLM data uniformly between the network elements. Second time point;

The detecting module is configured to: after the negotiation succeeds, the first network element sends the DLM data according to the second time point to detect and display.
The apparatus for optimizing loss monitoring according to claim 6, wherein said time synchronization Modules include:

The first obtaining submodule is configured to: the first network element acquires the first time point of the multiple network elements;

The time synchronization sub-module is configured to: the first network element performs time synchronization with the network element that interacts with the first network element by using a precise time synchronization protocol PTP according to the first time point.
The apparatus for optimizing loss monitoring according to claim 7, wherein the time synchronization sub-module comprises:

The time synchronization unit is configured to: perform time synchronization of the network element that interacts with the first network element by using the precise time synchronization protocol PTP according to the first time point to be accurate at least to a millisecond level.
The apparatus for optimizing loss monitoring according to claim 6, wherein the content of the preset protocol comprises at least:

The management entity group level identifier of the Ethernet OAM protocol packet, the version identifier of the Ethernet OAM protocol, the subtype packet identifier, the negotiation status FLAG of the Ethernet OAM entity, the packet attribute, the management entity group level ID, and the message exchange mode ID. The identifier, the hour of the time point, the point of the time point, the second of the time point, the millisecond of the time point, and one or more of the end message attribute identifiers.
The apparatus for optimizing loss monitoring according to claim 9, wherein the protocol negotiation module comprises:

The second obtaining sub-module is configured to: obtain, by the first network element, the initial DLM state of the first network element and the network element that interacts with the first network element to be in an invalid state;

The receiving submodule is configured to: the first network element receives a control command for controlling a DLM state change;

a sending sub-module, configured to: send, by the first network element, a request message with the FLAG as a notification to the network element that interacts with the first network element according to the control command;

a control sub-module, configured to: the first network element receives, by the network element that interacts with the first network element, a network element that has the FLAG as a completion response message and the first network element exchanges If the DLM state is a valid state, the sending of the request message is stopped;

The negotiation sub-module is configured to: when the DLM state of the first network element is in a valid state and the response message is received, the network element that the first network element interacts with the first network element negotiates successfully.
A computer readable storage medium storing computer executable instructions for performing the method of any of claims 1-5.