WO2017166922A1

WO2017166922A1 - Multicast service monitoring method and device

Info

Publication number: WO2017166922A1
Application number: PCT/CN2017/072823
Authority: WO
Inventors: 余辰东; 于金辉
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-03-30
Filing date: 2017-02-03
Publication date: 2017-10-05
Also published as: CN107294858A; CN107294858B

Abstract

Disclosed are a multicast service monitoring method and a device. The multicast service monitoring method comprises: synchronizing multicast services of different types of mirror entities and target optical network units, wherein each type of mirror entity corresponds to a copy node of the multicast service of a target optical network unit on each forwarding level of an optical line terminal; respectively collecting traffic statistics from the synchronized multicast services of all types of mirror entities, and obtaining a preset condition parameter corresponding to a multicast service forwarding abnormality; when a result of traffic statistics satisfies the condition parameter, determining that the multicast service forwarding of the target optical network units is abnormal, and determining a forwarding level at which the abnormality is located. The embodiment of the present invention achieves the monitoring of multicast services of an optical line terminal.

Description

Multicast service monitoring method and device

Technical field

This document relates to, but is not limited to, the field of communication technologies, and in particular, to a multicast service monitoring method and apparatus.

Background technique

With the continuous development of network access technologies, EPON (Ethernet Passive Optical Network) technology and GPON (Gigabit-Capable Passive Optical Network) are currently available for large-scale commercial use. Technology-based xPON technology. Compared with the traditional access network technology and Ethernet switch technology, the physical layer of the PON is a point-to-multipoint topology, which is composed of an optical line terminal, an optical distribution network, and an optical network unit.

At present, operators are more and more standardized on the operation and maintenance of the optical line terminals of the central office equipment, and the requirements for the stability of the service are getting higher and higher. However, due to various reasons, the optical line terminal will inevitably have business problems in actual operation. As a very important service, multicast also has problems. For example, the multicast protocol stream problem, the user fails to switch channels. Or multicast black screen but can be restored through channel switching; such as multicast data stream problems, such as multicast screens, card screens, etc. However, the implementation of the multicast service is related to the implementation of the related video service (such as the networking mode, the working mode of the set-top box, etc.), and the protocol interaction and service flow forwarding of the multicast service. The problem is handled, and the multicast service needs to be monitored. Currently, the monitoring of the optical line terminal multicast service has not been implemented.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a multicast service monitoring method and device, which can implement monitoring of the optical line terminal multicast service.

The embodiment of the invention provides a multicast service monitoring method, and the multicast service monitoring method includes:

Synchronizing multicast services of different types of mirrored entities and target optical network units; wherein each class The type mirroring entity respectively corresponds to the copy node of the forwarding service level of the target optical network unit at each forwarding level of the optical line terminal;

Performs traffic statistics on the multicast services of all types of mirrored entities that are synchronized, and obtains the condition parameters corresponding to the preset multicast service forwarding exceptions.

When the result of the traffic statistics meets the condition parameter, the multicast service forwarding abnormality of the target optical network unit is determined, and the forwarding level at which the abnormality is located is determined.

Optionally, after the determining that the abnormality is located at the forwarding level, the multicast service monitoring method further includes:

The alarm information carrying the abnormal forwarding level is output.

Optionally, before the synchronizing the multicast service of the different types of the mirroring entity and the target optical network unit, the multicast service monitoring method further includes:

The multicast service of the target optical network unit is used as a mirror source port at all forwarding levels of the optical line terminal, and all types of mirroring entities of the target optical network unit are correspondingly set, and a synchronization mode is configured for each type of mirrored entity. The synchronization mode includes a first mode and a second mode;

The multicast services for synchronizing different types of mirroring entities and target optical network units include:

Select each type of mirrored entity separately and determine the synchronization mode of the selected mirrored entity;

If the selected mirroring entity is in the first mode, when the multicast group joins or leaves the packet sent by the target optical network unit, and the target optical network unit successfully joins or leaves the corresponding multicast group, The multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror entity;

If the selected mirroring entity is in the second mode, when the multicast group joins or leaves the packet sent by the target optical network unit, the multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror. entity.

Optionally, after the synchronizing the multicast service of the different types of the mirroring entity and the target optical network unit, the multicast service monitoring method further includes:

The multicast service flows received by all types of mirrored entities after synchronization are converted into video and displayed by the display device.

Optionally, when the synchronizing the multicast service of the different types of the mirroring entity and the target optical network unit, the multicast service monitoring method further includes:

Blocks all types of mirrored entities except for multicast traffic.

In addition, the embodiment of the present invention further provides a multicast service monitoring apparatus, where the multicast service monitoring apparatus includes:

a synchronization module, configured to synchronize multicast services of different types of mirroring entities and target optical network units; wherein each type of mirroring entity respectively corresponds to a copying node of each forwarding layer of the optical network unit of the target optical network unit;

The statistics module is configured to perform traffic statistics on the multicast services of all types of mirrored entities that are synchronized, and obtain the condition parameters corresponding to the preset multicast service forwarding exceptions.

The monitoring module is configured to determine, when the result of the traffic statistics meets the condition parameter, the multicast service forwarding abnormality of the target optical network unit, and determine the forwarding level at which the abnormality is located.

Optionally, the multicast service monitoring apparatus further includes:

The output module is configured to output an alarm message carrying an abnormal forwarding level.

Optionally, the multicast service monitoring apparatus further includes:

The setting module is configured to set a multicast node of the target optical network unit to a copy node of all forwarding levels of the optical line terminal as a mirror source port, correspondingly set all types of mirror entities of the target optical network unit, and mirror each type of the set. An entity configuration synchronization mode, wherein the synchronization mode includes a first mode and a second mode;

The synchronization module is further configured to respectively select each type of mirror entity and determine a synchronization mode of the selected mirror entity, wherein

If the selected mirroring entity is in the second mode, when the multicast group joins or leaves the packet sent by the target optical network unit, the multicast service flow of the multicast group is correspondingly introduced or expired. Mirrored entity.

Optionally, the multicast service monitoring apparatus further includes:

The display module is configured to convert the multicast service flows received by all types of mirroring entities after synchronization into video, and display them through the display device.

Optionally, the multicast service monitoring apparatus further includes:

The masking module is set to block all types of mirroring entities except for the multicast service stream.

Compared with the related art, the technical solution provided by the embodiment of the present invention includes: synchronizing multicast services of different types of mirroring entities and target optical network units; wherein each type of mirroring entity respectively corresponds to the multicast service of the target optical network unit. A replication node at each forwarding level of the optical line terminal; performs traffic statistics on the multicast services of all types of mirrored entities after synchronization, and obtains a conditional parameter corresponding to the preset multicast service forwarding abnormality; the result of the traffic statistics is satisfied. When the condition parameter is used, the multicast service forwarding abnormality of the target optical network unit is determined, and the forwarding level at which the abnormality is located is determined. The embodiment of the invention implements monitoring of the multicast service of the optical line terminal.

The method and device for monitoring a multicast service according to the embodiment of the present invention, by setting different types of mirror entities corresponding to the target optical network unit at different forwarding levels of the optical line terminal, and using the target light without affecting the perception of the target optical network unit The multicast service flow of the network unit is not deduced from different forwarding levels; the multicast service flow from different forwarding levels monitors the forwarding quality of different forwarding levels of the optical line terminal, without relying on other external devices or program sources. The abnormal positioning of different forwarding levels of the optical line terminal is completed, and the purpose of monitoring the multicast service of the optical line terminal is achieved, and the accuracy is high.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic flowchart of a first embodiment of a multicast service monitoring method according to the present invention;

2 is a diagram showing an example of a multicast forwarding path of a multicast service at an optical line terminal in the first embodiment of the multicast service monitoring method of the present invention;

FIG. 3 is a schematic diagram of functional modules of a first embodiment of a multicast service monitoring apparatus according to the present invention.

Embodiments of the invention

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The embodiment of the present invention provides a multicast service monitoring method. Referring to FIG. 1, in a first embodiment of the multicast service monitoring method of the present invention, the multicast service monitoring method includes:

Step 10: Synchronize multicast services of different types of mirroring entities and target optical network units, where each type of mirroring entity corresponds to a copying node of each forwarding layer of the optical network unit of the target optical network unit;

It should be noted that, compared with the traditional access network technology and the Ethernet switch technology, the physical layer of the xPON is a point-to-multipoint topology, and the downlink data is broadcasted by the physical layer, that is, the downlink data is All the terminal devices on the link, that is, the optical network unit. On the basis of the physical layer, the xPON link layer establishes a logical unicast channel, and the ordinary unicast service can be sent to the optical network unit through the logical unicast channel. However, for the multicast service, if the unicast channel is also required, a large amount of multicast packet replication needs to be performed on the optical line terminal side, which increases the complexity of the device implementation and, more importantly, the large-flow replication multicast. Packets can be a waste of link bandwidth. Therefore, in the current xPON network, the forwarding of the multicast service stream is directly transmitted to the optical network unit by using the characteristics of the physical layer downlink broadcast.

For the optical line terminal of the central office equipment, the mainstream carrier equipment adopts the architecture of the PON board, the switch board and the board in the forwarding plane. Therefore, the replication of the multicast service is usually performed on multiple nodes in the PON device. For example, the multicast service flow needs to be replicated between multiple PON boards on the switch board, and multiple PON ports are required on the PON board. Copy between. When the multicast service flow is copied to the PON interface level, it will not continue to be replicated between the optical network units, but will be forwarded to the optical network unit in a single copy by using the downlink multicast or broadcast channel. During the forwarding of the foregoing multicast service flow, the optical line terminal receives the multicast service flow from the source port, and the source port serves as a multicast primary tier node, which is generally located on the control board/switch board; under the control of the multicast protocol Traffic is distributed to the forwarding port, and the forwarding port is a multicast secondary replication node. It should be noted that the foregoing primary copy node and secondary copy node may be one or multiple. The following describes the optical line terminal with a two-level forwarding hierarchy. It can be understood by those skilled in the art that in other embodiments, the optical line terminal may also have only one level of forwarding level or more than two levels of forwarding level.

In this embodiment, before step 10, the method may further include:

Optionally, the first type of mirroring entity and the second type of mirroring entity corresponding to the target optical network unit are set according to the forwarding path of the multicast service of the target optical network unit in the optical line terminal, and the multicast service of the target optical network unit may be configured. The first copy node and the second copy node of the optical line terminal are used as the mirror source port, and the mirrored destination port of the first copy node is set as the first type of mirror entity of the target optical network unit, and the second copy node is set and The mirroring destination port is the second type of mirroring entity of the target optical network unit. The first replication node and the second replication node are located at different forwarding levels. For example, when the first replication node is a primary replication node, the second replication node is a secondary replication node.

In addition, the target optical network unit can be configured by the human-machine command mode, and the user can use any optical network unit that is connected to the optical line terminal as the object of the multicast service monitoring, that is, the target optical network unit.

The following describes the setting of the target optical network unit mirroring entity in conjunction with FIG. 2:

As shown in Figure 2, the multicast service flow from the multicast source is replicated at the source port (primary replication node) of the optical line termination switch board, and the replicated multicast service flow is distributed to all existing multicast. The forwarding port (secondary replication node) on the PON board of the service requirement performs the second-level replication by the forwarding port, and the copied multicast service flow flows to the target optical network unit and other optical network units.

When the first type of mirroring entity of the target optical network unit is set, the entity or interface that is the same or the same as the target optical network unit multicast service flow forwarding path is selected, including but not limited to the same as the target optical network unit specific multicast service. The uplink port of the primary copy node; when setting the second type of mirroring entity of the target optical network unit, select the entity or interface that is the same or all of the same as the target optical network unit multicast service flow forwarding path, including but not limited to the target The specific multicast service of the optical network unit passes through the lower joint port of the same level 1 and level 2 copy node.

In this embodiment, the first type of mirroring entity and the second type of mirroring entity respectively correspond to the first copy node and the second copy node of the multicast service of the target optical network unit at different forwarding levels of the optical line terminal, and the first The multicast service of the class of the mirroring entity and the second type of mirroring entity and the target optical network unit can cause the specific multicast service flow of the target optical network unit to be non-destructively extracted from different forwarding layers without affecting the sensing of the target optical network unit. For subsequent analysis and monitoring of the multicast service of the target optical network unit.

Step 20: Perform traffic statistics on the multicast services of all types of mirrored entities that are synchronized, and obtain condition parameters corresponding to preset multicast service forwarding exceptions.

Step 30: When the result of the traffic statistics meets the condition parameter, determine a multicast service forwarding abnormality of the target optical network unit, and determine a forwarding level at which the abnormality is located.

In this embodiment, the manner of traffic statistics includes, but is not limited to, continuous counting, multiple counting of switching according to the multicast channel protocol, and the like. The multicast traffic of different forwarding entities can be calculated by comparing the multicast traffic statistics of different mirroring entities. By comparing the multicast traffic of different mirroring entities, the multicast service of the target optical network unit can be confirmed at the optical line terminal. Whether the forwarding is abnormal. After the first type of mirroring entity and the second type of mirroring entity of the target optical network unit are correspondingly set, the historical traffic statistics command and the traffic statistics command may be executed by using the man-machine command to set the first type of mirroring entity and the second type of mirroring entity. The historical traffic statistics of the first type of mirrored entity and the second type of mirrored entity are simultaneously cleared and the traffic statistics are restarted. The solution of the multicast problem is located and judged by the solution of the embodiment of the present invention, so that the judgment that the abnormality is located at the forwarding level is implemented. Therefore, determining the forwarding level at which an anomaly is located is an expected result, which is itself achieved by related techniques.

Optionally, the first type of mirroring entity is configured to correspond to the primary network replication node of the target network unit, and the second type of mirroring entity is configured to correspond to the multicast service of the target optical network unit at the optical line terminal. Secondary replication node. The traffic statistics of the multicast service of the first type of the mirroring entity and the second type of mirroring entity include the normal packet count and the abnormal packet count, wherein the abnormal packet includes but is not limited to drop packets and Error message. The condition parameters corresponding to the multicast service forwarding exception include a first condition parameter corresponding to the primary replication node forwarding exception, a second condition parameter corresponding to the secondary replication node forwarding exception, and a forwarding between the corresponding primary replication node and the secondary replication node. Abnormal third condition parameters, etc.

The traffic statistics of the multicast service of the first type of mirrored entity is used to monitor the traffic of a specific multicast source (the multicast source where the multicast group corresponding to the target optical network unit is located) and the primary copy node. The specific multicast service traffic of the primary replication node is calculated. The abnormal packet count growth can be used to monitor the multicast forwarding quality of the primary replication node. If the abnormal packet count continues for the first preset time period. Growth (meeting the first condition parameter), indicating that the primary replication node forwards an exception.

It should be noted that the first condition parameter can be implemented according to related technologies, and can be Adjust the actual situation.

The traffic statistics of the multicast service of the second type of mirroring entity is used to monitor the traffic of the secondary replication node that passes through the specific multicast source. The normal packet count can calculate the specific multicast service traffic passing through the secondary replication node. If the packet count is increased, the multicast forwarding quality of the secondary replication node can be monitored. If the abnormal packet count continues to grow in the second preset time period (the second condition parameter is met), the secondary replication node forwards. abnormal. It should be noted that the first preset time period and the second preset time period may be set to be the same or may be set to be different. For example, the first preset time period and the second preset time period may be simultaneously set to 5 second.

Calculating the first difference between the normal packet counts of the first type of mirroring entity and the second type of mirroring entity, and comparing the calculated first difference with the first preset threshold to implement traffic monitoring between the two levels of nodes And, when the calculated first difference is greater than the first preset threshold (the third condition parameter is satisfied), the forwarding exception between the primary copy node and the secondary copy node is abnormal.

Optionally, in this embodiment, the forwarding channel between the optical line terminal and the target optical network unit may be monitored. Optionally, in the foregoing step of collecting traffic statistics, the target optical network unit may also be actually received. The multicast service flow performs traffic statistics, and the condition parameter corresponding to the multicast service forwarding abnormality further includes a fourth condition parameter corresponding to the target optical network unit forwarding channel abnormality. After completing the traffic statistics of the multicast service flow actually received by the target optical network unit, calculating a second difference between the abnormal packet counts of the second type of mirroring entity and the target optical network unit, and calculating the second difference value The second preset threshold is compared, wherein when the calculated second difference is greater than the second preset threshold (the fourth condition parameter is satisfied), the forwarding channel of the target optical network unit is abnormal. In general, the forwarding channel anomaly of the target optical network unit may be caused by optical link quality or other factors.

In addition, the forwarding function of the target optical network unit itself can be monitored, and the normal packets of the second type of mirroring entity and the target optical network unit are calculated after the traffic statistics of the multicast service stream actually received by the target optical network unit are completed. Counting the third difference, and comparing the calculated third difference with the third preset threshold, wherein when the calculated third difference is greater than the third preset threshold, the forwarding function of the target optical network unit itself is abnormal Or, in addition to the normal multicast service flow, other service flows are forwarded to the target optical network unit, which may lead to exceeding the bandwidth configuration.

Optionally, in this embodiment, the quality of the specific multicast source may be monitored. Optionally, when the target optical network unit detects that the multicast channel is switched, that is, when the joined multicast group is switched, One set The abnormal message count of the set mirror entity is not increased within a third preset time period (can be set according to actual needs, for example, the third preset time period can be set to 5 seconds), and the specific program source is abnormal.

Optionally, in this embodiment, in order to prevent the traffic flow of the multicast service from affecting the foregoing traffic statistics operation, when performing step 10, the method may further include:

Blocks all types of mirrored entities except for multicast traffic.

The multicast service monitoring method in this embodiment is configured to set different types of mirroring entities corresponding to the target optical network unit at different forwarding levels of the optical line terminal, and to target the optical network unit without affecting the sensing of the target optical network unit. The multicast service flows are unconditionally extracted from different forwarding levels. The multicast service flows from different forwarding levels are used to monitor the forwarding quality of different forwarding levels of optical line terminals, and are completed without relying on other external devices or program sources. The abnormal positioning of different forwarding levels of the optical line terminal realizes the monitoring of the optical line terminal multicast service and has high accuracy.

Optionally, based on the first embodiment, a second embodiment of the multicast service monitoring method of the present invention is provided. In this embodiment, after the step 30, the method of the embodiment of the present invention further includes:

The alarm information carrying the abnormal forwarding level is output.

It should be noted that the difference between this embodiment and the first embodiment is that the abnormality of the forwarding of the multicast service of the target optical network unit is completed, and the multicast service forwarding abnormality of the target optical network unit is determined. The alarm information carrying the abnormal forwarding level is also output to directly inform the user of the abnormal location of the multicast service.

In addition, the output alarm information may further include interface information of the replication node that forwards the abnormality. For example, when the abnormal packet count of the first type of mirroring entity continues to grow in the first preset time period, that is, when the first condition parameter is met, it is determined that the primary copy node forwards abnormally, and the output alarm information is “primary copy node”. Forward exception" + "interface information of the primary copy node".

Optionally, in this embodiment, the alarm function of forwarding an abnormality can be started by the user as needed. You can enable the alarm function for forwarding abnormalities through man-machine commands, network management, or other O&M systems, and you can specify the forwarding level of the alarm. For example, the user can specify the alarm function to enable the "first-level copy node", and only if When the forwarding of the primary replication node is abnormal, the corresponding alarm information is output.

Optionally, based on the first embodiment, a third embodiment of the multicast service monitoring method of the present invention is provided. In the embodiment, before the step 10, the method further includes:

Step 10 includes:

Select each type of mirroring entity separately, and determine the synchronization mode of the selected mirroring entity;

It should be noted that the difference between this embodiment and the first embodiment is that, in this embodiment, when the first type of mirroring entity and the second type of mirroring entity are set, the first type of mirroring entity and the second type of mirroring are also set. The entity is configured with a synchronous mode.

The synchronization mode includes a following relationship between the multicast entity-based mirroring entity action and the action of the target optical network unit, including but not limited to following (first mode) and non-following (second mode), wherein "following" includes mirroring The action of the entity depends on the result of the protocol action of the target optical network unit; the action of "not following" including the mirrored entity depends only on the protocol action request of the target optical network unit, and does not depend on the action result of the target optical network unit.

Optionally, based on the third embodiment, the fourth embodiment of the multicast service monitoring method of the present invention is proposed. In this embodiment, the synchronization mode of the mirrored entity configuration in all types of mirroring entities is different, and after step 10, :

Converting the multicast service flows received by all types of mirrored entities after synchronization into video, and Displayed by the display device.

In this embodiment, the foregoing second type of mirroring entity includes a first mirroring entity and a second mirroring entity, and the first mirroring entity and the second mirroring entity are configured with different synchronization modes. Based on the foregoing description, those skilled in the art can understand that, because the synchronization modes configured by the mirroring entity in each type of mirroring entity are different, the mirroring entities of different synchronization modes receive different multicast service flows after synchronization. The synchronization mode configured by the first type of mirroring entity is the second mode, the synchronization mode configured by the first mirroring entity is the first mode, and the synchronization mode configured by the second mirroring entity is the second mode, and each mirror entity is set for each mirror entity. The synchronization operation is explained.

The synchronization mode of the first mirroring entity is the first mode, that is, the multicast service of the first mirroring entity and the target optical network unit is implemented according to whether the optical line terminal responds to the multicast group of the target optical network unit to join or leave the packet successfully. Stream synchronization, including:

(1) The target optical network unit leaves the multicast channel 1 successfully: when the target optical network unit sends a multicast group leaving message leaving the multicast channel 1, the optical line terminal selects the target optical network according to the content of the multicast group leaving the message. The unit is deleted from the specific multicast group 1 corresponding to the multicast channel 1; after the optical line terminal successfully deletes the target optical network unit from the specific multicast group 1, the first mirror entity is removed from the specific multicast group 1 Delete, and simultaneously cut off the multicast service flow to the target optical network unit and the multicast channel 1 of the first mirror entity; if the optical line terminal fails to respond to the multicast group leaving message of the target optical network unit, the When the target optical network unit is successfully deleted from the foregoing specific multicast group 1, the first mirrored entity is not processed.

(2) The target optical network unit joins the multicast channel 2 successfully: when the target optical network unit sends the multicast group join message to join the multicast channel 2, the optical line terminal associates the target optical network according to the content of the multicast group join message. The unit joins the specific multicast group 2 corresponding to the multicast channel 2; after the optical line terminal successfully joins the target optical network unit to the specific multicast group 2, the first mirror entity is added to the specific multicast group 2, and The multicast service flow of the multicast channel 2 is introduced into the target optical network unit and the first image entity; if the optical line terminal fails to respond to the multicast group join message of the target optical network unit, the target optical network unit is not added to the target In the foregoing specific multicast group 2, the first mirror entity is not processed.

(3) The target optical network unit switches the multicast channel: the target optical network unit first sends the multicast group leaving message leaving the multicast channel 1, and then sends the multicast group joining message that joins the multicast channel 2; First, the optical line terminal deletes the content of the packet according to the multicast group, deletes the target optical network unit from the specific multicast group 1 corresponding to the multicast channel 1, and then deletes the first mirror entity from the specific multicast group 1. Simultaneously cutting off the multicast service flow of the multicast channel 1 sent to the target optical network unit and the first mirror entity; and then joining the multicast group according to the multicast channel 2 sent by the target optical network unit, the target optical network After the unit joins the specific multicast group 2 corresponding to the multicast channel 2, the first mirroring entity is added to the specific multicast group 2, and the multicast service stream of the multicast channel 2 is introduced to the target optical network unit and the first mirror entity. If the optical line terminal fails to respond to the multicast group join/leave message of the target optical network unit, the first mirror entity is not processed.

2. The synchronization mode of the second mirroring entity is the second mode, that is, whether the second optical entity is synchronized according to whether the target optical network unit sends a multicast group join or leave message, including:

(1) The target optical network unit applies to leave the multicast channel 1: When the optical line terminal receives the multicast group leaving message of the target optical network unit leaving the multicast channel 1, the second mirror entity is from the multicast channel 1 The corresponding specific multicast group 1 is deleted, and the multicast service flow of the multicast channel 1 addressed to the second mirroring entity is truncated.

(2) The target optical network unit applies for joining the multicast channel 2: when the optical line terminal receives the multicast group joining message of the target optical network unit and joins the multicast channel 2, the second mirroring entity is added to the multicast channel 2 Corresponding to the specific multicast group 2, the multicast service flow of the multicast channel 2 is simultaneously introduced into the second mirror entity.

(3) The target optical network unit applies for switching the multicast channel: the target optical network unit first sends the multicast group leaving message leaving the multicast channel 1, and then sends the multicast group joining message to join the multicast channel 2; The multicast group leaving message received by the optical line terminal deletes the second mirroring entity from the specific multicast group 1 corresponding to the multicast channel 1, and intercepts the multicast service flow of the multicast channel 1 sent to the second mirroring entity. Then, the second mirroring entity is added to the specific multicast group 2 corresponding to the multicast channel 2 according to the multicast group join message received by the optical line terminal, and the multicast service flow of the multicast channel 2 is introduced into the second mirror entity.

3. The synchronization mode of the first type of mirroring entity is the first mode, that is, according to whether the target optical network unit sends a multicast group join or leave message, and the synchronization operation of the first type of mirror entity is implemented, and the second mirror entity may be referred to. Instructions for performing the synchronization operation will not be described here.

After the synchronization operation of the set mirror entity is completed, the synchronized first type of mirror entity, The multicast service flows received by the first mirroring entity and the second mirroring entity are respectively converted into video and displayed by the display device, and the video of each mirror entity may be displayed correspondingly in the same display device sub-region, or may be separately displayed on different display devices. Corresponding to the video of each mirrored entity.

In this embodiment, the actual multicast service flow of the target optical network unit is obtained and converted into a video at the mirroring entity, and real-time mirroring monitoring of the target optical network unit multicast service flow can be implemented, wherein the first type of mirror entity implements a specific group. Broadcasting traffic is monitored at the optical line terminal level 1 replication node; the second type of mirroring entity (including the first mirroring entity and the second mirroring entity) implements monitoring of the specific multicast service flow at the optical line terminal secondary copy node; The real-time video stream obtained by the mirroring entity of different synchronization modes can intuitively determine the quality of the multicast service of the target optical network unit, and intuitively process whether the optical line terminal successfully processes the multicast group join/leave message sent by the target optical network unit. It is determined that, for example, the converted video corresponding to the first mirroring entity and the second mirroring entity are different, indicating that the optical line terminal fails to successfully process the multicast group joining or leaving message sent by the target optical network unit.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the multicast service monitoring method.

The embodiment of the present invention further provides a multicast service monitoring apparatus. Referring to FIG. 3, in the first embodiment of the multicast service monitoring apparatus of the present invention, the multicast service monitoring apparatus includes:

The synchronization module 10 is configured to synchronize multicast services of different types of mirroring entities and target optical network units, where each type of mirroring entity corresponds to a copy node of each forwarding layer of the multicast service of the target optical network unit ;

It should be noted that, compared with the traditional access network technology and the Ethernet switch technology, the physical layer of the xPON is a point-to-multipoint topology, and the downlink data is broadcasted by the physical layer, that is, the downlink data is All the terminal devices on the link, that is, the optical network unit. On the basis of the physical layer, the xPON link layer establishes a logical unicast channel, and the ordinary unicast service can be sent to the optical network unit through the logical unicast channel. However, for the multicast service, if the unicast channel is also required, a large amount of multicast packet replication needs to be performed on the optical line terminal side, which increases the complexity of the device implementation and, more importantly, the large-flow replication multicast. Packets can be a waste of link bandwidth. Cause Therefore, in the current xPON network, the forwarding of the multicast service stream is directly transmitted to the optical network unit by using the characteristics of the physical layer downlink broadcast.

In this embodiment, the multicast service monitoring apparatus provided by the embodiment of the present invention is built in an optical line terminal, and the multicast service monitoring apparatus further includes:

The setting module is configured to set a first type of mirroring entity and a second type of mirroring entity corresponding to the target optical network unit based on the forwarding path of the multicast service of the target optical network unit in the optical line terminal, and the multicast of the target optical network unit The first copy node and the second copy node of the optical line terminal are configured as the mirror source port, and the mirrored destination port of the first copy node is set as the first type of mirror entity of the target optical network unit, and the second copy node is set and configured. The mirrored destination port acts as the second type of mirrored entity of the target optical network unit. The first replication node and the second replication node are located at different forwarding levels. For example, when the first replication node is a primary replication node, the second replication node is a secondary replication node.

As shown in Figure 2, the multicast service flow from the multicast source is at the source port of the optical line termination switch board. (Primary replication node) performs the first-level replication, and the replicated multicast service flow is distributed to the forwarding port (secondary replication node) of all relevant PON boards that have multicast service requirements, and the second-level replication is performed by the forwarding port. The copied multicast service flow flows to the target optical network unit and other optical network units.

When setting the first type of mirroring entity of the target optical network unit, the setting module selects an entity or interface that is identical or partially identical to the target optical network unit multicast service flow forwarding path, including but not limited to the specific multicast service with the target optical network unit. After the second-level mirroring entity of the target optical network unit is set, the setting module selects an entity or interface that is identical or partially identical to the target optical network unit multicast service flow forwarding path, including but It is not limited to the lower joint port of the same primary and secondary copy node through the specific multicast service of the target optical network unit.

In this embodiment, the first type of mirroring entity and the second type of mirroring entity respectively correspond to the first copy node and the second copy node of the multicast service of the target optical network unit at different forwarding levels of the optical line terminal, and pass the synchronization module 10 Synchronizing the multicast services of the first type of mirroring entity and the second type of mirroring entity and the target optical network unit, and forwarding the specific multicast service flow of the target optical network unit from different directions without affecting the sensing of the target optical network unit Layer-level non-destructive extraction for subsequent analysis and monitoring of the multicast service of the target optical network unit.

The statistic module 20 is configured to perform traffic statistics on the multicast services of all types of mirrored entities after synchronization, and obtain condition parameters corresponding to preset multicast service forwarding abnormalities;

The monitoring module 30 is configured to determine, when the result of the traffic statistics meets the condition parameter, the multicast service forwarding abnormality of the target optical network unit, and determine the forwarding level at which the abnormality is located.

In this embodiment, the manner of traffic statistics includes, but is not limited to, continuous counting, multiple counting of switching according to the multicast channel protocol, and the like. The multicast traffic of different forwarding entities can be calculated by comparing the multicast traffic statistics of different mirroring entities. By comparing the multicast traffic of different mirroring entities, the multicast service of the target optical network unit can be confirmed at the optical line terminal. Whether the forwarding is abnormal. After the first type of mirroring entity and the second type of mirroring entity of the target optical network unit are correspondingly set, the historical traffic statistics command and the traffic statistics command may be executed by using the man-machine command to set the first type of mirroring entity and the second type of mirroring entity. The historical traffic statistics of the first type of mirrored entity and the second type of mirrored entity are simultaneously cleared, and the traffic statistics are restarted by the statistics module.

Optionally, the first type of mirroring entity set by the module is configured to correspond to the multicast service of the target network element. In the primary replication node of the optical line terminal, the second type of mirroring entity is set to correspond to the secondary replication node of the optical network terminal of the target optical network unit. The statistics module 20, when performing traffic statistics on the multicast services of the first type of mirroring entity and the second type of mirroring entity, includes the normal packet count and the abnormal packet count, wherein the abnormal packet includes but is not limited to the drop packet and Error message. The condition parameters corresponding to the multicast service forwarding exception include a first condition parameter corresponding to the primary replication node forwarding exception, a second condition parameter corresponding to the secondary replication node forwarding exception, and a forwarding between the corresponding primary replication node and the secondary replication node. Abnormal third condition parameters, etc.

The statistics module 20 monitors the traffic statistics of the multicast service of the first type of mirroring entity, and the monitoring module 30 monitors the traffic of the specific multicast source (the multicast source where the multicast group corresponding to the target optical network unit is located) and the primary copy node. The normal packet count can be used to calculate the specific multicast service traffic passing through the primary replication node. The abnormal packet count growth can be used to monitor the multicast forwarding quality of the primary replication node. A continuous increase in a preset period of time (satisfying the first condition parameter) indicates that the primary replication node forwards an exception.

The statistics module 20 monitors the traffic statistics of the multicast service of the second type of mirroring entity, and the monitoring module 30 monitors the traffic of the secondary replication node that passes through the specific multicast source. The normal packet count can be calculated by the secondary replication node. Specific multicast service traffic; the abnormal packet count growth can be used to monitor the multicast forwarding quality of the secondary replication node. If the abnormal packet count continues to grow in the second preset time period (the second condition parameter is satisfied) , indicating that the secondary replication node forwards an exception. It should be noted that the first preset time period and the second preset time period may be set to be the same or may be set to be different. For example, the first preset time period and the second preset time period may be simultaneously set to 5 second.

The monitoring module 30 calculates a first difference between the normal packet counts of the first type of mirroring entity and the second type of mirroring entity, and compares the calculated first difference with the first preset threshold to implement a relationship between the two nodes. Traffic monitoring, wherein when the calculated first difference is greater than the first preset threshold (the third condition parameter is satisfied), the forwarding exception between the primary copy node and the secondary copy node is abnormal.

Optionally, in this embodiment, the monitoring module 30 can also monitor the forwarding channel between the optical line terminal and the target optical network unit. Optionally, in the foregoing step of collecting traffic statistics, the statistics module 20 can also The multicast service flow actually received by the target optical network unit performs traffic statistics, and the condition parameter corresponding to the multicast service forwarding abnormality further includes a fourth condition parameter corresponding to the target optical network unit forwarding channel abnormality. In the statistics module 20, the multicast industry actually received by the target optical network unit is completed. After the traffic statistics of the traffic flow, the monitoring module 30 calculates a second difference between the abnormal packet counts of the second type of mirroring entity and the target optical network unit, and compares the calculated second difference with the second preset threshold, where When the calculated second difference is greater than the second preset threshold (the fourth condition parameter is satisfied), the forwarding channel of the target optical network unit is abnormal. In general, the forwarding channel anomaly of the target optical network unit may be caused by optical link quality or other factors.

In addition, the monitoring module 30 may be configured to monitor the forwarding function of the target optical network unit itself, and may calculate the second type of mirroring entity after the statistics module 20 completes the traffic statistics of the multicast service flow actually received by the target optical network unit. a third difference between the normal packet counts of the target optical network unit and the calculated third difference is compared with a third preset threshold, wherein when the calculated third difference is greater than the third preset threshold, The forwarding function of the target optical network unit itself is abnormal, or in addition to the normal multicast service flow, other service flows are forwarded to the target optical network unit, which may lead to exceeding the bandwidth configuration.

Optionally, in this embodiment, the monitoring module 30 may be configured to monitor the quality of the specific multicast source. Optionally, when detecting that the target optical network unit switches the multicast channel, the group that joins the switch is selected. During the broadcast group, if the abnormal packet count of any set mirroring entity is not increased within the third preset time period (can be set according to actual needs, for example, the third preset time period can be set to 5 seconds). The specific program source is abnormal.

Optionally, in this embodiment, to prevent the traffic flow of the multicast service flow from affecting the traffic statistics operation of the foregoing statistic module 20, the multicast service monitoring apparatus further includes:

The masking module is configured to block other types of mirroring entities except for the multicast service flow.

The multicast service monitoring apparatus in this embodiment sets different mirroring entities corresponding to the target optical network unit at different forwarding levels of the optical line terminal, and the target optical network unit is not affected by the target optical network unit sensing. The multicast service flows are unconditionally extracted from different forwarding levels. The multicast service flows from different forwarding levels are used to monitor the forwarding quality of different forwarding levels of optical line terminals, and are completed without relying on other external devices or program sources. The abnormal positioning of different forwarding levels of the optical line terminal realizes the monitoring of the optical line terminal multicast service and has high accuracy.

Optionally, based on the first embodiment, a second embodiment of the multicast service monitoring apparatus of the present invention is proposed. In this embodiment, the multicast service monitoring apparatus further includes:

It should be noted that the difference between this embodiment and the first embodiment is that the monitoring module 30 completes the abnormal forwarding judgment of the multicast service of the target optical network unit, and determines the multicast service forwarding of the target optical network unit. When an abnormality occurs, the output module outputs an alarm information of the forwarding level that is abnormal, so as to intuitively inform the user of the abnormal location of the multicast service.

In addition, the alarm information output by the output module may further include interface information of the replication node that forwards the abnormality. For example, when the abnormal packet count of the first type of mirroring entity continues to grow in the first preset time period, that is, when the first condition parameter is met, the monitoring module 30 is configured to determine that the primary copy node forwards the abnormality and outputs the module output. The alarm information is “first-level replication node forwarding exception” + “interface information of primary replication node”.

Optionally, in this embodiment, the alarm function of forwarding an abnormality can be started by the user as needed. The user can specifically enable the alarm function of forwarding abnormalities through the man-machine command, the network management system, or other operation and maintenance systems, and further specify the forwarding level of the alarm. For example, the user can specify that the alarm function of the "first-level copy node" is enabled, and only When the forwarding of the "first-level replication node" is abnormal, the output module will output the corresponding alarm information.

Optionally, based on the first embodiment, the third embodiment of the multicast service monitoring apparatus of the present invention is proposed. In this embodiment, the setting module is further configured to: the multicast service of the target optical network unit is at the optical line terminal. All the forwarding nodes of the forwarding level are configured as the mirroring source port, corresponding to all types of mirroring entities of the target optical network unit, and the synchronization mode is configured for each type of mirroring entity that is set, wherein the synchronization mode includes the first mode and the second mode;

The synchronization module 10 is further configured to respectively select each type of mirror entity and determine a synchronization mode of the selected mirror entity, wherein

If the selected mirroring entity is in the second mode, when the multicast group joins or leaves the packet sent by the target optical network unit, the multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror. body.

It should be noted that the difference between this embodiment and the first embodiment is that the setting module in the embodiment is configured to set the first type of mirroring entity and the second type of mirroring entity, and also set the first type of mirroring entity. And the second type of mirroring entity is configured with a synchronization mode.

Optionally, based on the third embodiment, the fourth embodiment of the multicast service monitoring apparatus of the present invention is proposed. In this embodiment, the synchronization mode of the mirrored entity configuration is different in all types of mirroring entities, and the multicast service monitoring apparatus further include:

In this embodiment, the second type of mirroring entity set by the setting module includes a first mirroring entity and a second mirroring entity, and the first mirroring entity and the second mirroring entity are configured with different synchronization modes. Based on the foregoing description, those skilled in the art can understand that, because the synchronization modes configured by the mirroring entity in each type of mirroring entity are different, the mirroring entities of different synchronization modes receive different multicast service flows after synchronization. The synchronization mode configured by the first type of mirroring entity is the second mode, the synchronization mode configured by the first mirroring entity is the first mode, and the synchronization mode configured by the second mirroring entity is the second mode, and each mirror entity is set for each mirror entity. The synchronization operation is explained.

1. The synchronization mode of the first mirroring entity is the first mode, that is, the synchronization module 10 implements the first mirror entity and the target optical network unit according to whether the optical line terminal responds to the multicast group of the target optical network unit to join or leave the packet successfully. Synchronization of the multicast service flow includes: (1) The target optical network unit leaves the multicast channel 1 successfully: when the target optical network unit sends a multicast group leaving message leaving the multicast channel 1, the optical line terminal according to the multicast group Departing the content of the message, deleting the target optical network unit from the specific multicast group 1 corresponding to the multicast channel 1; at the optical line terminal, the target optical network unit is from the foregoing special After the successful deletion in the multicast group 1, the synchronization module 10 deletes the first mirroring entity from the specific multicast group 1, and intercepts the multicast service sent to the target optical network unit and the multicast channel 1 of the first mirroring entity. If the optical line terminal fails to successfully respond to the multicast group leaving message of the target optical network unit, that is, the target optical network unit is not successfully deleted from the specific multicast group 1, the synchronization module 10 does not perform the first mirror entity. deal with. (2) The target optical network unit joins the multicast channel 2 successfully: when the target optical network unit sends the multicast group join message to join the multicast channel 2, the optical line terminal associates the target optical network according to the content of the multicast group join message. The unit joins the specific multicast group 2 corresponding to the multicast channel 2; after the optical line terminal successfully joins the target optical network unit to the specific multicast group 2, the synchronization module 10 adds the first mirror entity to the specific multicast group. 2. At the same time, the multicast service flow of the multicast channel 2 is introduced into the target optical network unit and the first image entity; if the optical line terminal fails to respond to the multicast group join message of the target optical network unit, the target optical network is not The unit is added to the specific multicast group 2, and the synchronization module 10 does not process the first mirror entity. (3) The target optical network unit switches the multicast channel: the target optical network unit first sends the multicast group leaving message leaving the multicast channel 1, and then sends the multicast group joining message to join the multicast channel 2; The line terminal deletes the target optical network unit from the specific multicast group 1 corresponding to the multicast channel 1 according to the content of the packet leaving the multicast group, and the synchronization module 10 deletes the first mirror entity from the specific multicast group 1 again. Simultaneously cutting off the multicast service flow of the multicast channel 1 sent to the target optical network unit and the first mirror entity; and then joining the multicast group according to the multicast channel 2 sent by the target optical network unit, the target optical network After the unit joins the specific multicast group 2 corresponding to the multicast channel 2, the first mirroring entity is added to the specific multicast group 2, and the multicast service stream of the multicast channel 2 is introduced to the target optical network unit and the first mirror entity. If the optical line terminal does not successfully respond to the multicast group join/leave message of the target optical network unit, the synchronization module 10 does not process the first mirror entity.

2. The synchronization mode of the second mirroring entity is the second mode, that is, the synchronization module 10 implements synchronization operations on the second mirror entity according to whether the target optical network unit sends a multicast group join or leave message, including: (1), target The optical network unit applies to leave the multicast channel 1: when the optical line terminal receives the multicast group leaving message of the target optical network unit leaving the multicast channel 1, the synchronization module 10 associates the second mirror entity with the multicast channel 1 The specific multicast group 1 is deleted, and the multicast service flow to the multicast channel 1 of the second mirror entity is truncated. (2) The target optical network unit applies for joining the multicast channel 2: when the optical line terminal receives the multicast group joining message that the target optical network unit sends the multicast channel 2, the synchronization module 10 adds the second mirroring entity to the group. Specific multicast corresponding to channel 2 In group 2, the multicast service flow of multicast channel 2 is simultaneously introduced into the second mirror entity. (3) The target optical network unit applies for switching the multicast channel: the target optical network unit first sends the multicast group leaving message leaving the multicast channel 1, and then sends the multicast group joining message that joins the multicast channel 2; the synchronization module 10 first deleting the second mirroring entity from the specific multicast group 1 corresponding to the multicast channel 1 according to the multicast group leaving message received by the optical line terminal, and simultaneously cutting off the group of the multicast channel 1 sent to the second mirroring entity. Broadcasting the service flow; the synchronization module 10 adds the second mirroring entity to the specific multicast group 2 corresponding to the multicast channel 2 according to the multicast group join message received by the optical line terminal, and simultaneously multicasts the multicast service flow of the multicast channel 2. Introducing a second mirrored entity.

The synchronization mode of the first type of mirroring entity is the first mode, that is, the synchronization module 10 synchronizes the operation of the first type of mirroring entity according to whether the target optical network unit sends a multicast group join or leave message, and can refer to the foregoing synchronization module. 10 Description of the synchronization operation of the second mirroring entity, which is not described here.

After the synchronization module 10 completes the synchronization operation of the set mirroring entity, the display module converts the synchronized multicast service flows received by the first type of mirroring entity, the first mirroring entity, and the second mirroring entity into video, and displays the video. The device displays that the video of each mirrored entity can be displayed in the same display device sub-area, or the video corresponding to each mirrored entity can be displayed on different display devices.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Optionally, all or part of the above embodiment Sub-steps can also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, being executed by a processor and stored in a memory. Programs/instructions to implement their respective functions. The invention is not limited to any specific form of combination of hardware and software.

The embodiments disclosed in the present application are as described above, but the descriptions are only for the purpose of understanding the present application, and are not intended to limit the present application, such as the specific implementation method in the embodiments of the present invention. Any modifications and changes in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Industrial applicability

The above technical solution realizes monitoring of the multicast service of the optical line terminal.

Claims

A multicast service monitoring method, where the multicast service monitoring method includes:

Synchronizing the multicast service of the different types of the mirroring entity and the target optical network unit; wherein each type of mirroring entity respectively corresponds to the copying node of the forwarding network of the target optical network unit at each forwarding level of the optical line terminal;

Performs traffic statistics on the multicast services of all types of mirrored entities that are synchronized, and obtains the condition parameters corresponding to the preset multicast service forwarding exceptions.

When the result of the traffic statistics meets the condition parameter, the multicast service forwarding abnormality of the target optical network unit is determined, and the forwarding level at which the abnormality is located is determined.
The multicast service monitoring method according to claim 1, after the determining the forwarding level of the abnormality, the multicast service monitoring method further includes:

The alarm information carrying the abnormal forwarding level is output.
The method for monitoring a multicast service according to claim 1, wherein before the multicasting of the different types of the mirroring entity and the target optical network unit, the multicast service monitoring method further includes:

The multicast service of the target optical network unit is used as a mirror source port at all forwarding levels of the optical line terminal, and all types of mirroring entities of the target optical network unit are correspondingly set, and a synchronization mode is configured for each type of mirrored entity. The synchronization mode includes a first mode and a second mode;

The multicast services for synchronizing different types of mirroring entities and target optical network units include:

Select each type of mirrored entity separately and determine the synchronization mode of the selected mirrored entity;

If the selected mirroring entity is in the first mode, when the multicast group joins or leaves the packet sent by the target optical network unit, and the target optical network unit successfully joins or leaves the corresponding multicast group, The multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror entity;

If the selected mirroring entity is in the second mode, when the multicast group joins or leaves the packet sent by the target optical network unit, the multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror. entity.
The multicast service monitoring method according to claim 3, wherein said synchronizing different types of mirrors After the multicast service of the entity and the target optical network unit, the multicast service monitoring method further includes:

The multicast service flows received by all types of mirrored entities after synchronization are converted into video and displayed by the display device.
The multicast service monitoring method according to any one of claims 1 to 4, wherein when the different types of mirroring entities and the target optical network unit are synchronized, the multicast service monitoring method further includes:

Blocks all types of mirrored entities except for multicast traffic.
A multicast service monitoring apparatus, where the multicast service monitoring apparatus includes:

a synchronization module, configured to synchronize multicast services of different types of mirroring entities and target optical network units; wherein each type of mirroring entity respectively corresponds to a copying node of each forwarding layer of the optical network unit of the target optical network unit;

The statistics module is configured to perform traffic statistics on the multicast services of all types of mirrored entities that are synchronized, and obtain the condition parameters corresponding to the preset multicast service forwarding exceptions.

The monitoring module is configured to determine, when the result of the traffic statistics meets the condition parameter, the multicast service forwarding abnormality of the target optical network unit, and determine the forwarding level at which the abnormality is located.
The multicast service monitoring apparatus according to claim 6, wherein the multicast service monitoring apparatus further comprises:

The output module is configured to output an alarm message carrying an abnormal forwarding level.
The multicast service monitoring apparatus according to claim 6, wherein the multicast service monitoring apparatus further comprises:

The setting module is configured to set a multicast node of the target optical network unit to a copy node of all forwarding levels of the optical line terminal as a mirror source port, correspondingly set all types of mirror entities of the target optical network unit, and mirror each type of the set. An entity configuration synchronization mode, wherein the synchronization mode includes a first mode and a second mode;

The synchronization module is further configured to respectively select each type of mirror entity and determine a synchronization mode of the selected mirror entity, wherein

If the selected mirroring entity is in the first mode, receiving the group sent by the target optical network unit When the broadcast group joins or leaves the packet, and the target optical network unit successfully joins or leaves the corresponding multicast group, the multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror entity;

If the selected mirroring entity is in the second mode, when the multicast group joins or leaves the packet sent by the target optical network unit, the multicast service flow of the multicast group is correspondingly introduced or terminated to the selected mirror. entity.
The multicast service monitoring apparatus according to claim 8, wherein the multicast service monitoring apparatus further comprises:

The display module is configured to convert the multicast service flows received by all types of mirroring entities after synchronization into video, and display them through the display device.
The multicast service monitoring apparatus according to any one of claims 6-9, wherein the multicast service monitoring apparatus further comprises:

The masking module is set to block all types of mirroring entities except for the multicast service stream.