CN109743250A

CN109743250A - Transmission method, first network equipment and second network equipment of multicast message

Info

Publication number: CN109743250A
Application number: CN201811497058.6A
Authority: CN
Inventors: 刘翔
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2019-05-10
Anticipated expiration: 2038-12-07
Also published as: CN109743250B; WO2020114512A1

Abstract

The disclosure is directed to a kind of transmission method of multicast message, first network equipment and second network equipments, belong to technical field of multicast.The described method includes: first network equipment to second network equipment and the third network equipment, sends the first request message respectively, target multicast group is added for requesting in the first request message；When first network equipment receives the data message of the target multicast group from the third network equipment, first network equipment sends the second request message to second network equipment, wherein, the rate for the data message that the second request message is used to that second network equipment to be requested to reduce forwarding target multicast group.Using the disclosure, the bandwidth that the data message of target multicast group is used for transmission on the corresponding forward-path of second network equipment can be reduced, it is thus possible to reduce the waste of network bandwidth in the normal situation of the corresponding forward-path of the third network equipment.

Description

Transmission method, first network equipment and second network equipment of multicast message

Technical field

The disclosure is directed to technical field of multicast, set especially with respect to transmission method, the first network of a kind of multicast message Standby and second network equipment.

Background technique

In the related art, can be carried out data transmission by multicast mode.Multicast source in network is for forwarding group The network equipment of the data message of group is broadcast, it can be by the data message forwarding of the multicast group of data source server publication to user side The network equipment of data message for forwarding multicasting group, the network equipment of the user side is again by the data message forwarding of multicast group To user equipment.During forwarding, if forward-path sends failure, the data message of multicast group cannot be successfully arrived at The network equipment of the user side.At this time, it may be necessary to plan a new forward-path again by network convergence mode, being used for will The data message forwarding of multicast group to the user side the network equipment.But taking a long time due to network convergence process, it can lead Cause the real-time of multicast data message transmission poor.

To solve the above-mentioned problems, the transmission method of another multicast message is provided again in the related art.Multicast The data message of group can be forwarded to the network equipment of the user side by two different forward-paths simultaneously.In this way, can To guarantee when a forward-path breaks down, the network equipment of the user side can also connect from an other forward-path The data message of multicast group is received, the real-time of muticast data transmission is preferable.

In implementing the present disclosure, inventor discovery the prior art has at least the following problems:

Due to when forward-path does not break down, needing to pass through two different forward-path forwarding multicasting groups simultaneously Data message greatly wastes network bandwidth.

Summary of the invention

In order to overcome the problems, such as that present in the relevant technologies, present disclose provides following technical schemes:

According to the first aspect of the embodiments of the present disclosure, a kind of transmission method of multicast message is provided, multicast network is applied to In, the multicast network includes the third network equipment as primary root node, as second network equipment of spare root node, First network equipment as leaf node, which comprises

The first network equipment sends the first request to second network equipment and the third network equipment respectively Target multicast group is added for requesting in message, first request message；When the first network equipment is received from described When the data message of the target multicast group of the third network equipment, the first network equipment is sent out to second network equipment Send the second request message, wherein second request message forwards the target for requesting second network equipment to reduce The rate of the data message of multicast group.

The method provided by the embodiment of the present disclosure, is determined to normally in each first network equipment from third network When equipment obtains the data message of target multicast group, the second request message can be sent to second network equipment.When the second network When equipment receives the second request message that the corresponding all first network equipment of target multicast group are sent, it can be ensured that Suo You One network equipment can normally obtain the data message of target multicast group, and then second network equipment from the third network equipment The rate that the data message of forwarding target multicast group can be reduced, in the normal feelings of the corresponding forward-path of the third network equipment Under condition, reduce the bandwidth that the data message of target multicast group is used for transmission on the corresponding forward-path of second network equipment, thus, It can reduce the waste of network bandwidth.

In one possible implementation, the method also includes:

If after any data message for receiving the target multicast group from the third network equipment In preset duration, do not receive the data message of the target multicast group from the third network equipment, then described first The network equipment sends third request message to second network equipment, wherein the third request message is described for requesting Second network equipment improves the rate for forwarding the data message of the target multicast group.

If first network equipment receive the third network equipment transmission target multicast group any data message it In default waiting time afterwards, the data message of the target multicast group of third network equipment transmission is not received, then can be determined Main path breaks down, and needs to switch to the data message that standby path receives target multicast group.

In one possible implementation, the method also includes:

When the corresponding user equipment of the target multicast group all stops receiving the data message of the target multicast group, institute First network equipment is stated to second network equipment and the third network equipment, sends the 4th request message respectively, it is described 4th request message leaves the target multicast group for requesting.

According to the second aspect of an embodiment of the present disclosure, a kind of transmission method of multicast message is provided, multicast network is applied to In, the multicast network includes the third network equipment as primary root node, as second network equipment of spare root node, At least one first network equipment as leaf node, which comprises

Second network equipment receives the data message of the target multicast group from multicast source；Second network equipment With first rate to the data message of target multicast group described at least one described first network device forwards；When second net When network equipment receives the second request message of the armamentarium at least one described first network equipment, described second The network equipment forwards the data message of the target multicast group with the second rate, wherein second rate is less than described first Rate, second request message are used to that second network equipment to be requested to reduce the data message for forwarding the target multicast group Rate.

In one possible implementation, the method also includes:

When second network equipment receives of any appliance at least one described first network equipment When three request messages, second network equipment forwards the data message of the target multicast group with the first rate, wherein The third request message is used to that second network equipment to be requested to improve the speed for forwarding the data message of the target multicast group Rate.

In one possible implementation, second rate is greater than and is passed from first data transmission mode to the second data The data message transmission rate threshold value of defeated mode switchback.

During transmitting data, it can be avoided as much as switching between different transmission mode, in difference The efficiency for being unfavorable for improve data transfer is switched between transmission mode.Therefore, if second network equipment to be lower than or The number of target multicast group is forwarded to the rate of the data message transmission rate threshold value of I-PMSI mode switchback equal to S-PMSI mode According to message, then it will lead to transmission mode and switch over.In order to avoid the above problem, the second rate can be set greater than S- Data message transmission rate threshold value from PMSI mode to I-PMSI mode switchback rate.

In one possible implementation, the method also includes:

When second network equipment receives any first network at least one described first network equipment When four request message of equipment, second network equipment stops to target group described in any first network device forwards Broadcast the data message of group, wherein the 4th request message leaves the target multicast group for requesting.

If viewing target live video is exited in the computer equipment shutdown or user's selection that connect with user equipment , then user equipment can send the 4th request message of the corresponding target multicast group of target live video to first network equipment. First network equipment, can be by target multicast after receiving the 4th request message of target multicast group of user equipment transmission The list item for corresponding to the user equipment in the corresponding members list of group is deleted.If in the corresponding members list of target multicast group not There are any list item, then first network equipment can to the corresponding third network equipment of target multicast group and second network equipment, The 4th request message of target multicast group is sent respectively.The third network equipment and second network equipment are receiving any first net When four request message of the target multicast group that network equipment is sent, it can stop to any first network device forwards target multicast The data message of group.

According to the third aspect of an embodiment of the present disclosure, a kind of first network equipment is provided, which includes extremely A few module, at least one module for realizing multicast message provided by above-mentioned first aspect transmission method.

According to a fourth aspect of embodiments of the present disclosure, a kind of second network equipment is provided, which includes extremely A few module, at least one module for realizing multicast message provided by above-mentioned second aspect transmission method.

According to a fifth aspect of the embodiments of the present disclosure, a kind of system of transport multicast message is provided, the system comprises works At least one first network equipment for second network equipment of spare root node, as leaf node, in which:

First network equipment first network equipment as provided by the above-mentioned third aspect；

Second network equipment, second network equipment as provided by above-mentioned fourth aspect.

According to a sixth aspect of an embodiment of the present disclosure, a kind of first network equipment is provided, which includes place Device, memory are managed, processor is configured as executing the instruction stored in memory；Processor is realized above-mentioned by executing instruction The transmission method of multicast message provided by first aspect.

According to the 7th of the embodiment of the present disclosure the aspect, a kind of second network equipment is provided, which includes place Device, memory are managed, processor is configured as executing the instruction stored in memory；Processor is realized above-mentioned by executing instruction The transmission method of multicast message provided by second aspect.

According to the eighth aspect that the embodiment of the present disclosure provides, a kind of computer readable storage medium, including instruction are provided, when The computer readable storage medium in first network equipment when running, so that the first network equipment executes above-mentioned first Method described in aspect.

The 9th aspect provided according to the embodiment of the present disclosure, provides a kind of computer program product comprising instruction, works as institute Computer program product is stated when running in first network equipment, so that the first network equipment executes above-mentioned first aspect institute The method stated.

The tenth aspect provided according to the embodiment of the present disclosure, provides a kind of computer readable storage medium, including instruction, when The computer readable storage medium on second network equipment when running, so that second network equipment executes above-mentioned second Method described in aspect.

The tenth one side provided according to the embodiment of the present disclosure, provides a kind of computer program product comprising instruction, when The computer program product on second network equipment when running, so that second network equipment executes above-mentioned second aspect The method.

The technical scheme provided by this disclosed embodiment can include the following benefits:

It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not The disclosure can be limited.

Detailed description of the invention

The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure Example, and together with specification for explaining the principles of this disclosure.In the accompanying drawings:

Fig. 1 is a kind of structural schematic diagram of multicast network shown according to an exemplary embodiment；

Fig. 2 is a kind of flow diagram of the transmission method of multicast message shown according to an exemplary embodiment；

Fig. 3 is a kind of flow diagram of the transmission method of multicast message shown according to an exemplary embodiment；

Fig. 4 is a kind of structural schematic diagram of first network equipment shown according to an exemplary embodiment；

Fig. 5 is a kind of structural schematic diagram of second network equipment shown according to an exemplary embodiment；

Fig. 6 is a kind of structural schematic diagram of the system of transport multicast message shown according to an exemplary embodiment；

Fig. 7 is a kind of structural schematic diagram of first network equipment shown according to an exemplary embodiment；

Fig. 8 is a kind of structural schematic diagram of second network equipment shown according to an exemplary embodiment.

Through the above attached drawings, it has been shown that the specific embodiment of the disclosure will be hereinafter described in more detail.These attached drawings It is not intended to limit the scope of this disclosure concept by any means with verbal description, but is by referring to specific embodiments Those skilled in the art illustrate the concept of the disclosure.

Specific embodiment

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all implementations consistent with this disclosure.On the contrary, they be only with it is such as appended The example of the consistent device and method of some aspects be described in detail in claims, the disclosure.

The method that the embodiment of the present disclosure provides can be applied in multicast network, what multicast network was used to issue multicast source To user terminal, multicast network is alternatively referred to as multicast tree, can be the networkings such as tree topology, ring topology multicast data packet forwarding Form.The multicast network (or multicast tree) may include the third network equipment as primary root node, as spare root node Second network equipment, the first network equipment as leaf node.The first network equipment, second network equipment and The third network equipment, user network equipment are the network equipments for executing route forwarding function, for example, it may be routing Device, interchanger, virtual router, virtual switch etc..If named according to the role that the network equipment is disposed in a network, first The network equipment, second network equipment and the third network equipment can be Provider Edge (Provider Edge, PE) equipment etc., User network equipment can be customer edge (Customer Edge, CE) equipment etc., herein without limitation.The embodiment of the present disclosure In, it is respectively PE equipment, user network equipment for CE equipment with first network equipment, second network equipment, the third network equipment The detailed description of carry out scheme, other situations are similar therewith, and this embodiment is not repeated.

As shown in Figure 1, source (English: Source) server can be the publication source server of multicast packet, in Source Various data resources (such as live video of certain live streaming platform) is stored on server.When user logs in certain by computer equipment When platform is broadcast live, computer equipment can get live video the Resources list from Source server by CE3.As user couple Target live video in list is interested, and corresponding option can be clicked in computer equipment, and computer equipment can pass through CE3 sends the request of data of the corresponding target multicast group of target live video to PE3.PE3 can determine whether for target multicast group The primary root node and spare root node of data forwarding, primary root node is PE1 in Fig. 1, and spare root node is PE2, and to PE1 Send the request of data of target multicast group respectively with PE2.

Source server can send PE1 and PE2 for the data message of target multicast group respectively by CE1 and CE2 On, PE1 is calculated according to address Internet protocol (Internet Protocol, IP) of PE3 by the datagram of target multicast group Text is sent to the first path of PE3, and PE2 is calculated the data message of target multicast group being sent to PE3 according to the IP address of PE3 The second path.In the method that the embodiment of the present disclosure provides, this two paths can be passed through respectively, by the number of target multicast group PE3 is forwarded to according to message.When PE3 receives the data message of the target multicast group from PE1 forwarding, can be sent to PE2 Corresponding second request message of target multicast group, the data that the second request message is used to that PE2 to be requested to reduce forwarding target multicast group The rate of message.It, can when PE2 receives the second request message that the corresponding all first network equipment of target multicast group are sent The rate of the data message of target multicast group will be forwarded to be reduced to the second rate from first rate, the number of target multicast group is forwarded According to message.

Mesh is forwarded to PE3 with identical rate relative on the corresponding forward-path of PE1 and the corresponding forward-path of PE2 The mode of the data message of multicast group is marked, the method that the embodiment of the present disclosure provides is determined to normally in all first network equipment When ground obtains the data message of target multicast group from PE1, the second request message can be sent to PE2.When PE2 receives target group When broadcasting the second request message that the corresponding all first network equipment of group are sent, it can be ensured that all first network equipment can The data message of target multicast group is normally got from PE1, and then PE2 can reduce the data message of forwarding target multicast group Rate reduce and be used for transmission target on the corresponding forward-path of PE2 in the normal situation of the corresponding forward-path of PE1 The bandwidth of the data message of multicast group, to avoid waste network bandwidth.

An exemplary embodiment of the present disclosure provides a kind of transmission method of multicast message, this method be can be applied to such as figure In multicast network shown in 1, multicast network may include the third network equipment as primary root node, as spare root node Second network equipment, the first network equipment as leaf node.As shown in Fig. 2, the process flow of this method may include Following step:

Step S410, first network equipment send the first request respectively and disappear to second network equipment and the third network equipment Breath.

Wherein, target multicast group is added for requesting in the first request message.

In an implementation, first network equipment first can send the first request message again to third network to second network equipment Equipment sends the first request message, alternatively, first network equipment first can send the first request message again to the third network equipment The first request message is sent to second network equipment, alternatively, first network equipment can be simultaneously to second network equipment and third The network equipment sends the first request message, and the embodiment of the present disclosure is not construed as limiting the sequencing for sending message.

First network equipment can be the PE3 in Fig. 1, and first network equipment can be and receive net (Receiver Site) connected PE equipment may exist multiple CE equipment in Receiver Site.First network equipment can with it is multiple The connection of CE equipment, if PE3 is connected with CE3, CE4, first network equipment can be arrived the data message forwarding in multicast network In Receiver Site.

When user is interested in the target live video in list, corresponding option can be clicked in computer equipment, Computer equipment can send the request of data of the corresponding target multicast group of target live video by CE3 to PE3.

The corresponding members list of multiple multicast groups is stored in first network equipment, each members list can correspond to The address of one multicast group.If first network equipment had not received the corresponding request of data of any multicast group or the group The data message that the corresponding CE equipment of group all stops receiving the multicast group is broadcast, then the corresponding list item of the multicast group is not present, and indicates There is no to the interested user of the corresponding live video of the multicast group in Receiver Site.If first network equipment connects The request of data of target multicast group is received, with can determining the address of the target multicast group in request of data and the IP of CE equipment The IP address of CE equipment is added in the members list of the address of target multicast group by location.In this way, the corresponding table of target multicast group Item exists, and indicates exist in Receiver Site to the interested user of the corresponding live video of target multicast group.For Fig. 1 In PE4, CE5 and CE6 connected to it lose interest in the corresponding live video of target multicast group, so be not necessarily to will by PE4 The data message forwarding of target multicast group is into corresponding Receiver Site.

First network equipment is after receiving the request of data of target multicast group of CE equipment transmission, to target multicast group The corresponding third network equipment and second network equipment, send the first request message respectively, target multicast group is added, to make It, can be to the when the proper third network equipment and second network equipment receive the data message of the target multicast group from multicast source One network equipment forwards the data message of the target multicast group.

Step S420, second network equipment receive the data message of the target multicast group from multicast source.And step S430, second network equipment is with first rate to the data message of at least one first network device forwards target multicast group.

In an implementation, the third network equipment and second network equipment can receive the first of first network equipment transmission Request message.For the third network equipment and second network equipment, first network equipment can not only only one, if also There is the data message of other first network device request target multicast groups, then the third network equipment and second network equipment are ok Receive the first request message that multiple first network equipment are sent.Can be carried in the first request message at least one The corresponding IP address of one network equipment.In this way when the third network equipment and second network equipment receive target multicast group When data message, it can be based at least one corresponding IP address of first network equipment, by the datagram of target multicast group Text is forwarded at least one first network equipment.

In an implementation, the third network equipment and second network equipment can receive the data message of different multicast groups, The address for the multicast group that can be carried in packet header by the data message of multicast group, distinguishes the data message of different multicast groups. If the data message of the multicast group received is the data message of target multicast group, second network equipment can be with the first speed Data message of the rate at least one first network device forwards target multicast group.First rate can be in second network equipment The rate of system default is also possible to the data transmission speed that operator distributes to Source server access carrier Web vector graphic Rate.First network equipment can receive the data for the target multicast group that the third network equipment and second network equipment are sent respectively Message.

Step S440, first network equipment receive the data message for the target multicast group that the third network equipment is sent.And Step S450, first network equipment send the second request message to second network equipment.

Wherein, the speed for the data message that the second request message is used to that second network equipment to be requested to reduce forwarding target multicast group Rate.

In an implementation, first network equipment can receive the data message of different multicast groups, and first network equipment can also be with The data message of different multicast groups is distinguished in the address of the multicast group carried in packet header by the data message of multicast group.If There are list item, then the data message received is the corresponding members list in address of the corresponding multicast group of the data message received The data message of target multicast group can also then may be used to the corresponding user network equipment forwarding data packets of target multicast group The IP address of the data-source device carried in packet header to obtain the data message of target multicast group, the IP based on data-source device Address determines whether the data message of target multicast group is that the third network equipment is sent.As shown in figure 3, target multicast group Data message is forwarded to PE3 by P from CE1, if it is determined that and the data message of target multicast group is that the third network equipment is sent, It can then determine that from the third network equipment be normally to pass to the main path of the data-message transmission between first network equipment Transmission of data, and then first network equipment can send corresponding second request message of target multicast group to second network equipment. The rate for the data message that second request message is used to that second network equipment to be requested to reduce forwarding target multicast group.Due to leading at this time Path can normal transmission data, first network equipment no longer need to from second network equipment obtain target multicast group data Message.

In one possible implementation, first network equipment can be based on Border Gateway Protocol (Border Gateway Protocol, BGP), corresponding second request message of target multicast group is sent to second network equipment.Correspondingly, If second network equipment receives whole first network equipment at least one first network equipment and is based on Border Gateway Protocol The second request message that BGP is sent, then with the data message of the second rate forwarding target multicast group.

In an implementation, first network equipment can trigger the borde gateway that control request is transmitted based on BGP in control layer Agreement standard process (BGP Flow Specification) module sends target multicast group corresponding the to second network equipment Two request messages.Certainly, other than based on BGP, other agreements can also be based on, send target multicast to second network equipment Corresponding second request message of group.

It is provided in BGP, when only mutually having transmission control request between the equipment of the BGP relationship of certification, receives control The equipment of system request can just handle the control request received, otherwise directly abandon control request.Doing so can ensure and set Safety between standby prevents from sending malice control request there are rogue device to attack the equipment for receiving control request.At this In the method that open embodiment provides, first network equipment can be based on Border Gateway Protocol (BGP), send to second network equipment Corresponding second request message of target multicast group.Correspondingly, if first network equipment and second network equipment have certification BGP relationship, second network equipment can just handle corresponding second request message of the target multicast group received.

In addition, first network equipment can also pass through transmission control protocol (Transmission Control Protocol, TCP) mode, corresponding second request message of target multicast group is sent to second network equipment.In this way, can protect Corresponding second request message of target multicast group successfully can be sent to second network equipment by barrier first network equipment, even if In unsuccessful situation, first network equipment can also receive the instruction message for sending failure, and set again to the second network Preparation send target multicast group corresponding second request message, until sending successfully.

Step S460, when second network equipment receives of the armamentarium at least one first network equipment When two request messages, second network equipment is with the data message of the second rate forwarding target multicast group.

Wherein, the second rate is less than first rate.

In an implementation, at least one first network equipment can be the corresponding equipment of target multicast group, i.e. addition target group Broadcast the armamentarium of group.If only having individual plants to have sent the second request message in armamentarium, second network equipment is still The data message that target multicast group is so forwarded with first rate, only when armamentarium all has sent the second request message When, second network equipment is just with the data message of the second rate forwarding target multicast group.

Second network equipment can receive the second request message of distinct device transmission, and second network equipment first can obtain Take the address of the multicast group in the second request message.Second network equipment can determine this based on the address of the multicast group of acquisition Whether the data message of forwarding multicasting group is responsible in ground.It in one possible implementation, can be in pre-stored multicast group The address in the presence of the multicast group obtained is searched whether in management list, if be not present in pre-stored multicast group management list The address of the multicast group of acquisition can then determine the data message of local and not responsible forwarding multicasting group.

If there is the address of the multicast group obtained in pre-stored multicast group management list, transmission the can be verified The equipment of two request messages is legitimate device.In one possible implementation, asking in available second request message Seek the IP address of source device.Based on the IP address of request source device, determine whether the equipment for sending the second request message is legal Equipment.In one possible implementation, it can search whether there is request in pre-stored multicast group forwarding list The IP address of source device, if request source device once crossed the data message of target multicast group, request to the second network device requests Source device joined target multicast group, can have the IP address of request source device in pre-stored multicast group forwarding list, then It can determine that the equipment for sending the second request message is legitimate device.If be not present in pre-stored multicast group forwarding list The IP address for requesting source device then can directly abandon the second request message that illegal equipment is sent.

For second network equipment, first network equipment can not only only one, the multicast group for needing to forward can also With not only only one can be set in the second network for the ease of being managed to these first network equipment and multicast group It is standby to establish list as shown in Table 1.

Table 1

	PE A	PE B	PE C	PE D	……	PE N
							The address 1 of multicast group	0	1	2	1	……	2
The address 2 of multicast group	2	0	2	0	……	2
							The address 3 of multicast group	2	2	2	2	……	2
……	……	……	……	……	……	……
							The address N of multicast group	1	0	2	2	……	1

In table 1, all PE equipment in preset multicast network, and local responsible forwarding can be listed in gauge outfit All multicast groups address, can recorde corresponding solicited status in the table entry.

When second network equipment receives the second request message that any first network equipment is sent, can will receive The second request message in multicast group address and the corresponding solicited status parameter of the first network equipment be set to 2.When Two network equipments once received the request of data for the multicast group that any first network equipment is sent, but do not receive this first It, can be by the address of the multicast group and the first network equipment pair when the second request message of the multicast group that the network equipment is sent The solicited status parameter answered is set to 1.When second network equipment had not received the multicast group that any first network equipment is sent Request of data when, the address of the multicast group and the corresponding solicited status parameter of the first network equipment can be set to 0.The Two network equipments can solicited status based on the request received, in Maintenance Table 1.

In one possible implementation, when the corresponding user equipment of target multicast group all stops receiving target multicast group Data message when, first network equipment sends the 4th request message to second network equipment and the third network equipment respectively, the Four request messages leave target multicast group for requesting.Correspondingly, when second network equipment receive from least one first When four request message of any first network equipment in the network equipment, second network equipment stops setting to any first network The data message of standby forwarding target multicast group.

In an implementation, if viewing target is exited in the computer equipment shutdown or user's selection that connect with user equipment Live video, then user equipment can send the 4th of the corresponding target multicast group of target live video to first network equipment and ask Message is sought, target multicast group is added to leave target multicast group, exit, so that second network equipment and the third network equipment are no longer The data message of target multicast group is sent to first network equipment.First network equipment is in the target for receiving user equipment transmission After 4th request message of multicast group, the table of the user equipment can will be corresponded in the corresponding members list of target multicast group Entry deletion.If any list item is not present in the corresponding members list of target multicast group, first network equipment can be to target The corresponding third network equipment of multicast group and second network equipment send the 4th request message of target multicast group respectively.Third The network equipment and second network equipment are in the 4th request message for receiving the target multicast group that any first network equipment is sent When, the data message to any first network device forwards target multicast group can be stopped.Meanwhile second the network equipment in table 1 It is middle that the address of target multicast group and the corresponding solicited status parameter of any first network equipment are set to 0.

When the corresponding solicited status in the address of any multicast group all 0 and 2, a few first network can be determined Whole first network equipment in equipment in addition to the first network equipment for sending the 4th request message all have sent the second request Message, second network equipment can forward the data message of target multicast group at this time with the second rate lower than First Speed, reach To the purpose of the data message current limliting to target multicast group.If except the 4th request message of transmission in few first network equipment First network equipment except first network equipment in there are the first network equipment of not sent second request message, then can be with Determine that the first network equipment of not sent second request message needs to receive the data of target multicast group from second network equipment Message, therefore second network equipment cannot forward the data message of target multicast group with the second rate.Wherein, the second rate can To be greater than 0 rate, it is also possible to lesser preset rate etc..

When data message of second network equipment with the second rate forwarding target multicast group, whenever second network equipment connects Receive the data message of multicast group, can determine the data message whether be target multicast group data message, if it is, can To judge the size of the rate of the data message of currently transmitted target multicast group, can be then normally carried out if it is less than the second rate Forwarding, is then directly abandoned if it is greater than or equal to the second rate.Pass through the above method, so that it may ensure that the second network is set The standby data message with the second rate forwarding target multicast group.

In one possible implementation, the second rate, which is greater than from first data transmission mode to the second data, transmits mould The data message transmission rate threshold value of formula switchback.In one possible implementation, first data transmission mode can be choosing Ze Xing operator multicast services interface (Selective-PMSI, S-PMSI) mode, the second data-transmission mode can be compatible Property operator multicast services interface (Inclusive-Provider Multicast Service Interface, I-PMSI) mould Formula.Second rate is greater than the data message transmission rate threshold value from S-PMSI mode to I-PMSI mode switchback.

In an implementation, when Source server issues a new resource, the datagram of the corresponding multicast group of the resource Text is transmitted in multicast network by I-PMSI mode.Under I-PMSI mode, the data of the corresponding multicast group of the resource Message can be sent in each of multicast network PE equipment, even not to be transmitted across the resource corresponding for these PE equipment The request of data of multicast group.Only when there are at least one PE equipment to send the corresponding multicast group of the resource in these PE equipment After request of data, start the cut operator for carrying out transmission path, will not need to receive the data of the corresponding multicast group of the resource The corresponding subpath removal of PE equipment, and then the data message of the corresponding multicast group of the resource only can by primary root node or The corresponding tunnel S-PMSI of the spare root node of person is sent to the PE equipment of the requested resource.Later, if the requested resource PE equipment have sent the 4th request message, then the data message of the corresponding multicast group of the resource is in primary root node or spare Transmission speed in the corresponding tunnel S-PMSI of root node, which can decrease up to, is reduced to 0, when transmission speed be down to S-PMSI mode to When the data message transmission rate threshold value of I-PMSI mode switchback, and it can be passed from S-PMSI mode switchback to by I-PMSI mode The data message of the corresponding multicast group of the defeated resource.

During transmitting data, it can be avoided as much as switching between different data transmission mode, The efficiency for being unfavorable for improve data transfer is switched between different data transmission mode.Therefore, if second network equipment with Target group is forwarded to the rate of the data message transmission rate threshold value of I-PMSI mode switchback below or equal to S-PMSI mode The data message for broadcasting group, then will lead to data-transmission mode and switch over.In order to avoid the above problem, the second rate can be set It is set to the rate for the data message transmission rate threshold value for being greater than S-PMSI mode to I-PMSI mode switchback.

In one possible implementation, if the method that the embodiment of the present disclosure provides can also include: to receive In preset duration after any data message of target multicast group from the third network equipment, do not receive from third net The data message of the target multicast group of network equipment, then first network equipment sends third request message to second network equipment.Phase Ying Di, when second network equipment receives the third request message of any appliance at least one first network equipment When, second network equipment is with the data message of first rate forwarding target multicast group.

Wherein, the speed for the data message that third request message is used to that second network equipment to be requested to improve forwarding target multicast group Rate.

In an implementation, if first network equipment is in any number for receiving the target multicast group that the third network equipment is sent According to the data message for the target multicast group in the default waiting time after message, not receiving the transmission of the third network equipment, then It can determine that main path breaks down, need to switch to the data message that standby path receives target multicast group.At this point, first network Equipment can send the corresponding third request message of target multicast group to second network equipment.When second network equipment receive to It, can when the corresponding third request message of the target multicast group that any first network equipment in few first network equipment is sent Target multicast group in table 1 and the corresponding solicited status parameter of any first network equipment are set to 1, in this way, the second network Transmission rate can be promoted to first rate automatically by equipment, with the data message of first rate forwarding target multicast group, most It can achieve the purpose for switching standby path eventually.

If third request message detects while receiving the data message of target multicast group from standby path from main road It is again able to receive the data message of target multicast group on diameter, then can send the second request message to second network equipment.

Disclosure another exemplary embodiment provides a kind of first network equipment, which can be applied to In multicast network, multicast network includes the third network equipment as primary root node, the second network as spare root node Equipment, the first network equipment as leaf node.As shown in figure 4, the first network equipment 500 includes:

Sending module 510, for sending the first request message respectively to second network equipment and the third network equipment, the Target multicast group is added for requesting in one request message, and the sending function in above-mentioned steps S410, Yi Jiqi specifically may be implemented He implies step.

Reduced speed request module 520, for when receiving the data message of the target multicast group from the third network equipment, The second request message is sent to second network equipment, wherein the second request message is for requesting second network equipment to reduce forwarding The reduced speed request function in above-mentioned steps S440 and step S450 specifically may be implemented in the rate of the data message of target multicast group Energy and other implicit steps.

In one possible implementation, the first network equipment 500 further include:

Raise speed request module, for when in any data message for receiving the target multicast group from the third network equipment In preset duration later, when not receiving the data message of the target multicast group from the third network equipment, to the second network Equipment sends third request message, wherein third request message is for requesting second network equipment to improve forwarding target multicast group Data message rate.

In one possible implementation, sending module 510 are also used to:

When the corresponding user equipment of target multicast group all stops receiving the data message of target multicast group, to the second network Equipment and the third network equipment, send the 4th request message respectively, and the 4th request message leaves target multicast group for requesting.

It should be noted that above-mentioned sending module 510 and reduced speed request module 520 can be realized by processor, Huo Zheyou Processor cooperates memory, transceiver to realize.

Disclosure another exemplary embodiment provides a kind of second network equipment, which can be applied to In multicast network, multicast network includes the third network equipment as primary root node, the second network as spare root node Equipment, the first network equipment as leaf node.As shown in figure 5, second network equipment 600 includes:

Receiving module 610 specifically may be implemented above-mentioned for receiving the data message of the target multicast group from multicast source Receive capabilities and other implicit steps in step S420.

Forwarding module 620, for the data with first rate at least one first network device forwards target multicast group Forwarding capability and other implicit steps in above-mentioned steps S430 specifically may be implemented in message.

Reduction of speed module 630, for being asked when receive the armamentarium at least one first network equipment second When seeking message, with the data message of the second rate forwarding target multicast group, wherein the second rate is less than first rate, and described the Two request messages are used to that second network equipment to be requested to reduce the rate for forwarding the data message of the target multicast group, specifically The reduction of speed function and other implicit steps in above-mentioned steps S460 may be implemented.

In one possible implementation, second network equipment 600 further include:

Raise speed module, for disappearing when the third request for receiving any appliance at least one first network equipment When breath, with the data message of first rate forwarding target multicast group, wherein the third request message is for requesting described second The network equipment improves the rate for forwarding the data message of the target multicast group.

In one possible implementation, the second rate, which is greater than from first data transmission mode to the second data, transmits mould The data message transmission rate threshold value of formula switchback.

In one possible implementation, second network equipment 600 further include:

Stopping modular, for when receiving the of any first network equipment at least one first network equipment When four request messages, stop the data message to any first network device forwards target multicast group, wherein the 4th request Message leaves the target multicast group for requesting.

It should be noted that above-mentioned receiving module 610, forwarding module 620 and reduction of speed module 630 can be by processor realities It is existing, or realized by processor cooperation memory, transceiver.

About the first network equipment in above-described embodiment, second network equipment, wherein modules execute the tool of operation Body mode is described in detail in the embodiment of the method, and the operation of first network equipment execution and Fig. 1 are extremely The operation that first network equipment executes in corresponding embodiment in Fig. 3 is consistent, and the operation and Fig. 1 that second network equipment executes extremely are schemed The operation that second network equipment executes in corresponding embodiment in 3 is consistent, and no detailed explanation will be given here.

It is true in each first network equipment by the first network equipment of embodiment of the present disclosure offer, second network equipment When can normally obtain the data message of target multicast group from the third network equipment surely, the can be sent to second network equipment Two request messages.When second network equipment receives the second request that the corresponding all first network equipment of target multicast group are sent When message, it can be ensured that all first network equipment can normally obtain the data of target multicast group from the third network equipment Message, and then second network equipment can reduce the rate of the data message of forwarding target multicast group, in the third network equipment In the corresponding normal situation of forward-path, reduces and be used for transmission target multicast group on the corresponding forward-path of second network equipment Data message bandwidth, it is thus possible to reduce the waste of network bandwidth.

It should be understood that first network equipment provided by the above embodiment, second network equipment are in multicast data transmission When, only the example of the division of the above functional modules, in practical application, it can according to need and divide above-mentioned function With being completed by different functional modules, i.e., the internal structure of first network equipment or second network equipment is divided into different Functional module, to complete all or part of the functions described above.In addition, first network equipment provided by the above embodiment, The transmission method embodiment of second network equipment and multicast message belongs to same design, and specific implementation process is detailed in method implementation Example, which is not described herein again.

The another exemplary embodiment of the disclosure provides a kind of system of transport multicast message, as shown in fig. 6, the system 200 include second network equipment 220 as spare root node, at least one first network equipment 210 as leaf node.

System 200 in the present embodiment, wherein first network equipment 210, second network equipment 220 execute the specific of operation Mode is described in detail in the embodiment of the method, and the operation of the execution of first network equipment 210 and Fig. 1 are extremely The operation that first network equipment executes in corresponding embodiment in Fig. 3 is consistent, the operation and Fig. 1 that second network equipment 220 executes The operation that second network equipment executes in corresponding embodiment into Fig. 3 is consistent, and no detailed explanation will be given here.

First network equipment 700 may include processor 710, transceiver 730, and transceiver 730 can connect with processor 710 It connects, as shown in Figure 7.Transceiver 730 may include receiver and transmitter, can be used for receiving or sending message or data, Transceiver 730 can be network interface card.First network equipment 700 can also include acceleration components (can be described as accelerator), when acceleration portion When part is network acceleration component, acceleration components can be network interface card.Processor 710 can be in the control of first network equipment 700 The heart utilizes the various pieces of various interfaces and the entire first network equipment 700 of connection, such as transceiver 730.In the present invention In, processor 710 can be central processing unit (Central Processing Unit, CPU), and optionally, processor 710 can To include one or more processing units.Processor 710 can also be that digital signal processor, specific integrated circuit, scene can Program gate array or other programmable logic device etc..First network equipment 700 can also include memory 740, memory 740 can be used for storing software program and module, and processor 710 is stored in the software code and mould of memory by reading Block, thereby executing the various function application and data processing of first network equipment 700.

The first network equipment 700 of the embodiment of the present invention can correspond in embodiment corresponding to above-mentioned Fig. 1 to Fig. 3 One network equipment, also, Fig. 1 to Fig. 3 institute may be implemented in processor 710, the transceiver 730 etc. in the first network equipment 700 Function possessed by first network equipment in corresponding embodiment and/or the various steps and method implemented.The processing Device 710, transceiver 730 be used to execute the sending module 510 of first network equipment described in Fig. 4, reduced speed request module 520 it is all Operation.For sake of simplicity, details are not described herein.

Second network equipment 800 may include processor 810, transceiver 830, and transceiver 830 can connect with processor 810 It connects, as shown in Figure 8.Transceiver 830 may include receiver and transmitter, can be used for receiving or sending message or data, Transceiver 830 can be network interface card.Second network equipment 800 can also include acceleration components (can be described as accelerator), when acceleration portion When part is network acceleration component, acceleration components can be network interface card.Processor 810 can be in the control of second network equipment 800 The heart utilizes the various pieces of entire second network equipment 800 of various interfaces and connection, such as transceiver 830.In the present invention In, processor 810 can be CPU, and optionally, processor 810 may include one or more processing units.Processor 810 is also It can be digital signal processor, specific integrated circuit, field programmable gate array or other programmable logic device etc..The Two network equipments 800 can also include memory 840, and memory 840 can be used for storing software program and module, processor 810 are stored in the software code and module of memory by reading, and the various functions thereby executing second network equipment 800 are answered With and data processing.

Second network equipment 800 of the embodiment of the present invention can correspond in embodiment corresponding to above-mentioned Fig. 1 to Fig. 3 Two network equipments, also, Fig. 1 to Fig. 3 institute may be implemented in processor 810, the transceiver 830 etc. in second network equipment 800 Function possessed by second network equipment in corresponding embodiment and/or the various steps and method implemented.The processing Device 810, transceiver 830 are used to execute the receiving module 610, forwarding module 620, reduction of speed module of second network equipment described in Fig. 5 630 all operations.For sake of simplicity, details are not described herein.

Those skilled in the art will readily occur to its of the disclosure after considering specification and practicing disclosure disclosed herein Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are wanted by right It asks and points out.

It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the accompanying claims.

Claims

1. a kind of transmission method of multicast message, which is characterized in that be applied in multicast network, the multicast network includes conduct The third network equipment of primary root node, the first network as second network equipment of spare root node, as leaf node Equipment, which comprises

The first network equipment sends the first request respectively and disappears to second network equipment and the third network equipment Target multicast group is added for requesting in breath, first request message；

When the first network equipment receives the data message of the target multicast group from the third network equipment, The first network equipment sends the second request message to second network equipment, wherein second request message is used for Second network equipment is requested to reduce the rate for forwarding the data message of the target multicast group.

2. the method according to claim 1, wherein the method also includes:

If default after any data message for receiving the target multicast group from the third network equipment In duration, the data message of the target multicast group from the third network equipment is not received, then the first network Equipment sends third request message to second network equipment, wherein the third request message is for requesting described second The network equipment improves the rate for forwarding the data message of the target multicast group.

3. the method according to claim 1, wherein the method also includes:

When the corresponding user equipment of the target multicast group all stops receiving the data message of the target multicast group, described One network equipment sends the 4th request message to second network equipment and the third network equipment respectively, and the described 4th Request message leaves the target multicast group for requesting.

4. a kind of transmission method of multicast message, which is characterized in that be applied in multicast network, the multicast network includes conduct The third network equipment of primary root node, as second network equipment of spare root node, as at least one of leaf node First network equipment, which comprises

Second network equipment receives the data message of the target multicast group from multicast source；

Second network equipment is with first rate to target multicast group described at least one described first network device forwards Data message；

It is asked when second network equipment receives second of the armamentarium at least one described first network equipment When seeking message, second network equipment forwards the data message of the target multicast group with the second rate, wherein described second Rate is less than the first rate, and second request message forwards the target for requesting second network equipment to reduce The rate of the data message of multicast group.

5. according to the method described in claim 4, it is characterized in that, the method also includes:

When the third that second network equipment receives any appliance at least one described first network equipment is asked When seeking message, second network equipment forwards the data message of the target multicast group with the first rate, wherein described Third request message is used to that second network equipment to be requested to improve the rate for forwarding the data message of the target multicast group.

6. according to the method described in claim 4, it is characterized in that, second rate be greater than from first data transmission mode to The data message transmission rate threshold value of second data-transmission mode switchback.

7. according to the method described in claim 4, it is characterized in that, the method also includes:

When second network equipment receives any first network equipment at least one described first network equipment Four request messages when, second network equipment stops to target multicast group described in any first network device forwards Data message, wherein the 4th request message for request leave the target multicast group.

8. a kind of first network equipment, which is characterized in that be applied in multicast network, the multicast network includes being used as primary The third network equipment of node, as second network equipment of spare root node, the first network as leaf node is set Standby, the first network equipment includes:

Sending module, for sending the first request message, institute respectively to second network equipment and the third network equipment State the first request message for request addition target multicast group；

Reduced speed request module, for when the data message for receiving the target multicast group from the third network equipment When, second network equipment of Xiang Suoshu sends the second request message, wherein second request message is for requesting second net Network equipment reduces the rate for forwarding the data message of the target multicast group.

9. first network equipment according to claim 8, which is characterized in that the first network equipment further include:

Raise speed request module, for when in any data for receiving the target multicast group from the third network equipment In preset duration after message, the data message of the target multicast group from the third network equipment is not received When, second network equipment of Xiang Suoshu sends third request message, wherein the third request message is for requesting second net Network equipment improves the rate for forwarding the data message of the target multicast group.

10. first network equipment according to claim 8, which is characterized in that the sending module is also used to:

When the corresponding user equipment of the target multicast group all stops receiving the data message of the target multicast group, Xiang Suoshu Second network equipment and the third network equipment send the 4th request message respectively, and the 4th request message is for requesting Leave the target multicast group.

11. a kind of second network equipment, which is characterized in that be applied in multicast network, the multicast network includes as primary The third network equipment of root node, as second network equipment of spare root node, as at least one of leaf node First network equipment, second network equipment include:

Receiving module, for receiving the data message of the target multicast group from multicast source；

Forwarding module, for the data with first rate to target multicast group described at least one described first network device forwards Message；

Reduction of speed module, for disappearing when the second request for receiving the armamentarium at least one described first network equipment When breath, the data message of the target multicast group is forwarded with the second rate, wherein second rate is less than first speed Rate, second request message are used to that second network equipment to be requested to reduce the data message for forwarding the target multicast group Rate.

12. second network equipment according to claim 11, which is characterized in that second network equipment further include:

Raise speed module, for disappearing when the third request for receiving any appliance at least one described first network equipment When breath, the data message of the target multicast group is forwarded with the first rate, wherein the third request message is for requesting Second network equipment improves the rate for forwarding the data message of the target multicast group.

13. second network equipment according to claim 11, which is characterized in that second rate is greater than by the first data Data message transmission rate threshold value of the transmission mode to the second data-transmission mode switchback.

14. second network equipment according to claim 11, which is characterized in that second network equipment further include:

Stopping modular, for when receiving the of any first network equipment at least one described first network equipment When four request messages, stop the data message to target multicast group described in any first network device forwards, wherein described 4th request message leaves the target multicast group for requesting.

15. a kind of system of transport multicast message, which is characterized in that the system comprises the second networks as spare root node Equipment, at least one first network equipment as leaf node, in which:

The first network equipment, the first network equipment as described in any claim in the claim 8-10；

Second network equipment, second network equipment as described in any claim in the claim 11-14.

16. a kind of first network equipment, which is characterized in that be applied in multicast network, the multicast network includes as primary The third network equipment of root node, the first network as second network equipment of spare root node, as leaf node Equipment, the first network equipment includes processor and transceiver, in which:

The processor is sent out respectively for controlling the transceiver to second network equipment and the third network equipment The first request message is sent, target multicast group is added for requesting in first request message；It is come from when the transceiver receives When the data message of the target multicast group of the third network equipment, the transceiver is controlled to second network equipment Send the second request message, wherein second request message forwards the mesh for requesting second network equipment to reduce Mark the rate of the data message of multicast group.

17. first network equipment according to claim 16, which is characterized in that the processor is also used to:

When received in the transceiver target multicast group from the third network equipment any data message it In preset duration afterwards, when not receiving the data message of the target multicast group from the third network equipment, control The transceiver sends third request message to second network equipment, wherein the third request message is for requesting institute It states second network equipment and improves the rate for forwarding the data message of the target multicast group.

18. first network equipment according to claim 16, which is characterized in that the processor is also used to:

When the corresponding user equipment of the target multicast group all stops receiving the data message of the target multicast group, institute is controlled Transceiver is stated to second network equipment and the third network equipment, sends the 4th request message respectively, the described 4th asks Ask message for request leave the target multicast group.

19. a kind of second network equipment, which is characterized in that be applied in multicast network, the multicast network includes as primary The third network equipment of root node, the first network as second network equipment of spare root node, as leaf node Equipment, second network equipment includes processor and transceiver, in which:

The transceiver, for receiving the data message of the target multicast group from multicast source；

The processor, for controlling the transceiver with first rate to described at least one described first network device forwards The data message of target multicast group；It is set when the transceiver receives the whole at least one described first network equipment When standby second request message, the data message that the transceiver forwards the target multicast group with the second rate is controlled, wherein Second rate is less than the first rate, and second request message is for requesting second network equipment to reduce forwarding The rate of the data message of the target multicast group.

20. second network equipment according to claim 19, which is characterized in that the processor is also used to:

When the transceiver receives the third request message of any appliance at least one described first network equipment When, control the data message that the transceiver forwards the target multicast group with the first rate, wherein the third request Message is used to that second network equipment to be requested to improve the rate for forwarding the data message of the target multicast group.

21. second network equipment according to claim 19, which is characterized in that second rate is greater than by the first data Data message transmission rate threshold value of the transmission mode to the second data-transmission mode switchback.

22. second network equipment according to claim 19, which is characterized in that the processor is also used to:

When the transceiver receives the 4th of any first network equipment at least one described first network equipment When request message, controls the transceiver and stop datagram to target multicast group described in any first network device forwards Text, wherein the 4th request message leaves the target multicast group for requesting.

23. a kind of computer readable storage medium, which is characterized in that including instruction, when the computer readable storage medium exists When being run in first network equipment, so that the first network equipment executes any claim institute in the claim 1-3 The method stated.

24. a kind of computer readable storage medium, which is characterized in that including instruction, when the computer readable storage medium exists When being run on second network equipment, so that second network equipment executes any claim institute in the claim 4-7 The method stated.