CN114885190B - Method, system, equipment and storage medium for multicast traffic detection - Google Patents
Method, system, equipment and storage medium for multicast traffic detection Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
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Abstract
The embodiment of the application provides a method, a system, equipment and a storage medium for detecting multicast traffic, wherein the method comprises the following steps: when the master control detects unknown multicast flow, counting the message information of the unknown multicast flow, and sending the message information of the unknown multicast flow to a studio; the studio judges whether the unknown multicast traffic corresponding to the message information is legal multicast traffic or not by using a preset multicast traffic task list and the message information of the unknown multicast traffic; and when the unknown multicast flow is judged to be legal multicast flow, the studio sends a trusted legal multicast flow indication to the master controller, so that the master controller forwards the unknown multicast flow according to the trusted legal multicast flow indication.
Description
Technical Field
The present application relates to the field of broadcast television technologies, and in particular, to a method, a system, a device, and a storage medium for detecting multicast traffic.
Background
With the development of the traditional television station to make and broadcast new media, high-definition and ultra-high-definition 4K/8K services, the traditional SDI transmission network has the defects of difficult maintenance, high cost, low bandwidth, difficult expansion, short transmission distance and the like, and in the field of broadcast and television production and broadcast, an IP network technology is started to replace SDI, and a series of IP audio and video transmission standards, such as SMPTE 2022-6 and SMPTE 2110 series standards, are gradually developed.
In a traditional production and broadcasting network, a special SDI cable is used for audio and video transmission, and each cable transmits one path of (video + audio + auxiliary data) signals, so that a transmitting end can be traced from the physical source, and audio and video entering the system are ensured to come from a reasonable input source. For the IP over IP (SDI over IP), video + audio + auxiliary data are encapsulated in an IP packet, each signal corresponds to a multicast group, multiple signals may be carried in the same optical fiber, and unnecessary signals may also be transmitted in an IP channel, which affects system forwarding.
Disclosure of Invention
The embodiment of the application provides a method, a system, equipment and a storage medium for detecting multicast traffic, which aim to solve the technical problem that the forwarding of a system is influenced because unnecessary signals can be transmitted in an IP channel because the same optical fiber is used for bearing multiple paths of signals for the multicast traffic in an IP scene of a production and broadcast network.
According to a first aspect of embodiments of the present application, there is provided a method for multicast traffic detection, including:
when the master control detects unknown multicast flow, counting the message information of the unknown multicast flow, and sending the message information of the unknown multicast flow to a studio;
the studio judges whether the unknown multicast flow corresponding to the message information is legal multicast flow or not by using a preset multicast flow task list and the message information of the unknown multicast flow;
and when the unknown multicast flow is judged to be legal multicast flow, the studio sends a trusted legal multicast flow indication to the master controller, so that the master controller forwards the unknown multicast flow according to the trusted legal multicast flow indication.
According to a second aspect of the embodiments of the present application, there is provided a system for multicast traffic detection, including:
the main control is used for counting the message information of the unknown multicast flow when the unknown multicast flow is detected, and sending the message information of the unknown multicast flow to a studio; forwarding the unknown multicast traffic according to the trusted legal multicast traffic indication; and discarding the unknown multicast traffic according to the illegal multicast traffic discarding indication;
the studio is used for judging whether the unknown multicast flow corresponding to the message information is legal multicast flow or not by using a preset multicast flow task list and the message information of the unknown multicast flow; when the unknown multicast flow is judged to be legal multicast flow, the studio sends an instruction of trusting the legal multicast flow to the master controller; and when the unknown multicast flow is judged to be illegal multicast flow, the studio sends an indication of discarding the illegal multicast flow to the master controller.
Due to the adoption of the technical scheme, the embodiment of the application has the following technical effects: in the production and broadcast network system, the control channel is established between the control systems, and the flow entering the IP matrix of the production and broadcast network is ensured to be credible flow, so that the required signal is transmitted in the IP channel, and the system forwarding is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a flowchart of a method for detecting multicast traffic according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a system for multicast traffic detection according to an embodiment of the present application;
fig. 3 is a schematic diagram of a system for detecting, authenticating, and trusting an unknown stream in a broadcast network over IP (SDI over IP) scenario provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
Example one
As shown in fig. 1, a flowchart of a method for detecting multicast traffic provided in an embodiment of the present application includes:
step S101: when the master control detects unknown multicast flow, counting the message information of the unknown multicast flow, and sending the message information of the unknown multicast flow to a studio;
step S102: the studio judges whether the unknown multicast flow corresponding to the message information is legal multicast flow or not by using a preset multicast flow task list and the message information of the unknown multicast flow;
step S103: and when the unknown multicast flow is judged to be legal multicast flow, the studio sends a trusted legal multicast flow indication to the master controller, so that the master controller forwards the unknown multicast flow according to the trusted legal multicast flow indication.
The embodiment of the invention also comprises the following steps: when the unknown multicast flow is judged to be illegal, the studio sends an illegal multicast flow discarding indication to the master controller, so that the master controller discards the unknown multicast flow according to the illegal multicast flow discarding indication.
Specifically, the message information of the unknown multicast traffic includes bandwidth and an IP seven-tuple; the multicast flow task list comprises unknown multicast flow sent by the studio to the master control and message information of the unknown multicast flow.
The method for judging whether the unknown multicast traffic corresponding to the message information is legal multicast traffic comprises the following steps that the studio judges whether the unknown multicast traffic corresponding to the message information is legal multicast traffic by using a preset multicast traffic task list and the message information of the unknown multicast traffic: when a multicast flow task list preset in the studio contains the message information of the unknown multicast flow, judging that the unknown multicast flow corresponding to the message information is legal multicast flow; and when the multicast flow task list preset in the studio does not contain the message information of the unknown multicast flow, judging that the unknown multicast flow corresponding to the message information is illegal multicast flow.
The embodiment of the invention also comprises the following steps: a control channel is established between the master controller and the studio; after the total control counts the message information of the unknown multicast flow, the method further includes: and the master control inserts a data stream ID field and an authentication request field into the message information to generate message information containing the data stream ID and the authentication request, and sends the message information containing the data stream ID and the authentication request to the studio through the control channel, so that the studio carries out validity verification on unknown multicast flow corresponding to the message information according to the authentication request in the message information.
Specifically, when the unknown multicast traffic is determined to be a valid multicast traffic, the studio sends an indication of trusted valid multicast traffic to the grandmaster, so that the grandmaster forwards the unknown multicast traffic according to the indication of trusted valid multicast traffic includes: when the unknown multicast flow is judged to be legal multicast flow, the studio authenticates the stream characteristics of the unknown multicast flow to obtain the stream characteristics of the unknown multicast flow; the studio generates a trusted legal multicast flow indication containing the stream characteristics and the data stream ID according to the stream characteristics and the data stream ID; and the studio sends the trust legal multicast flow indication containing the stream characteristics and the data stream ID to the master controller, so that the master controller obtains the unknown multicast flow corresponding to the data stream ID according to the data stream ID and forwards the unknown multicast flow according to the stream characteristics.
Specifically, when it is determined that the unknown multicast traffic is an illegal multicast traffic, the sending, by the studio, an illegal multicast traffic discarding instruction to the grandmaster, so that the grandmaster discards the unknown multicast traffic according to the illegal multicast traffic discarding instruction includes: when the unknown multicast flow is judged to be an illegal multicast flow, the studio generates an illegal multicast flow discarding indication containing a data flow ID; and the studio sends the indication of the discarded legal multicast flow containing the data stream ID to the master controller, so that the master controller obtains an unknown multicast flow corresponding to the data stream ID according to the data stream ID and discards the unknown multicast flow.
As shown in fig. 2, a system schematic diagram of multicast traffic detection provided in an embodiment of the present application includes: the general control 201 is configured to, when an unknown multicast flow is detected, count the message information of the unknown multicast flow and send the message information of the unknown multicast flow to a studio; forwarding the unknown multicast traffic according to the trusted legal multicast traffic indication; and discarding the unknown multicast traffic according to the illegal multicast traffic discarding indication; the studio 202 is configured to determine whether an unknown multicast traffic corresponding to a preset multicast traffic task list is a legal multicast traffic according to a preset multicast traffic task list and the message information of the unknown multicast traffic; when the unknown multicast flow is judged to be legal multicast flow, the studio sends a trust legal multicast flow instruction to the master controller; and when the unknown multicast flow is judged to be an illegal multicast flow, the studio sends an illegal multicast flow discarding indication to the master controller.
An electronic device provided in an embodiment of the present application includes: a memory; a processor; and a computer program; wherein the computer program is stored in the memory and configured to be executed by the processor to implement a method of multicast traffic detection.
A computer-readable storage medium provided by an embodiment of the present application, on which a computer program is stored; the computer program is executed by a processor to implement a method of multicast traffic detection.
The invention provides a system schematic diagram for detecting, authenticating and trusting unknown streams in a broadcasting network IP (SDI over IP) scene, as shown in FIG. 3, the main steps are as follows:
step 301: when the IP matrix in the master control detects new unknown flow, the message information is counted and reported to the controller of the master control system, wherein the reported information comprises bandwidth and IP seven-tuple (source MAC, destination MAC, source IP, destination IP, protocol number, source port number and destination port number).
Step 302: and the master control system controller receives the unknown flow information reported by the IP matrix, and authenticates the information carrying the unknown flow to the studio controller through a certain format. The studio controller confirms whether the traffic is legitimate and confirms the stream characteristics of the traffic, including video, audio, ancillary data, 2022-6, TS streams, etc.).
Step 303: after the studio controller returns the authentication information, if the flow is illegal, the flow is shielded from entering the matrix through the rules issued by the studio controller, if the flow is legal, the studio controller needs to issue rules to trust the flow, the flow is allowed to be forwarded in the IP matrix, and the flow characteristics are marked.
Step 304: after the IP matrix receives the rule issued by the studio controller, generating a strategy for the illegal flow and discarding the strategy; and for legal flow, scheduling by using a congestion-free algorithm according to the characteristics marked by the studio controller.
The technical content of the present invention will be described below with reference to specific examples
As shown in fig. 3, when an IP matrix of the total control system receives an unknown traffic at a certain time, the system starts the steps of detecting, authenticating, and trusting the unknown traffic, for example, as follows:
step 1: through the first packet uploading process, the IP matrix device detects that three multicast flows are input by the upstream studio, and the message information is:
the IP matrix sends an unknown stream identification request to the master control system controller through the control channel, and the control channel can use a protocol such as netconf, netstream or syslog. The unknown flow authentication request contains the above message information and is labeled with a flow ID.
Taking syslog as an example, the format of transmission is:
Time Host_IP – Interface |Source_MAC |Destination_MAC |Source_IP |Destination_IP |Protocol |Source_Port |Destination_Port |Stream_ID |Stream_Speed
the fields are described as follows:
the unknown flow authentication information sent by the IP matrix is as follows:
2021/01/01 10:00:00 10.0.5.1 – GigabitEthernet0/3/0 |00e0-fc12-3456 |0100-5e01-0101 |1.1.1.1 |224.1.1.1 |17 |10000 |2000 |1 |10415295692
2021/01/01 10:00:00 10.0.5.1 – GigabitEthernet0/3/0 |00e0-fc12-3456 |0100-5e01-0102 |1.1.1.1 |224.1.1.2 |17 |10000 |3000 |2 |10485760
2021/01/01 10:00:00 10.0.5.1 – GigabitEthernet0/3/0 |00e0-fc12-3456 |0100-5e01-0103 |1.1.1.1 |224.1.1.3 |17 |10000 |4000 |3 |10240
and 2, step: and after receiving the unknown flow information reported by the IP matrix, the master control system controller inserts an authentication request field into the unknown flow information and authenticates the studio controller through a certain format.
Taking syslog as an example, the format of transmission is:
Time Host_IP – Interface |Source_MAC |Destination_MAC |Source_IP |Destination_IP |Protocol |Source_Port |Destination_Port |Stream_ID |Stream_Speed |Request_Type |Request_Result
the fields are described as follows:
the unknown stream identification information sent to the studio by the master controller is as follows:
2021/01/01 10:00:10 100.0.5.1 – GigabitEthernet0/3/0 |00e0-fc12-3456 |0100-5e01-0101 |1.1.1.1 |224.1.1.1 |17 |10000 |2000 |1 |10415295692 |1 |-
2021/01/01 10:00:10 100.0.5.1 – GigabitEthernet0/3/0 |00e0-fc12-3456 |0100-5e01-0102 |1.1.1.1 |224.1.1.2 |17 |10000 |3000 |2 |10485760 |1 |-
2021/01/01 10:00:10 100.0.5.1 – GigabitEthernet0/3/0 |00e0-fc12-3456 |0100-5e01-0103 |1.1.1.1 |224.1.1.3 |17 |10000 |4000 |3 |10240 |1 |-
after receiving the authentication request, the studio needs to respond to the request and includes stream characteristics after the unknown stream is identified, taking syslog as an example, the sending format is as follows:
Time Host_IP – Stream_ID| Stream_Type| Request_Type |Request_Result
the fields are described as follows:
if the studio controller considers the flow to be illegal, the response message is:
2021/01/01 10:00:10 200.0.5.1 – 1 | - | - | 1 | NOK
2021/01/01 10:00:10 200.0.5.1 – 2 | - | - | 1 | NOK
2021/01/01 10:00:10 200.0.5.1 – 3 | - | - | 1 | NOK
if the studio controller considers the flow to be legal and the requested 3 streams are video, audio, auxiliary data of a stream group, respectively, the response message is:
2021/01/01 10:00:10 200.0.5.1 – 1 | 1 | 1 | 1 | OK
2021/01/01 10:00:10 200.0.5.1 – 2 | 2 | 1 | 1 | OK
2021/01/01 10:00:10 200.0.5.1 – 3 | 3 | 1 | 1 | OK
and step 3: after the studio controller returns the authentication information, if the flow is illegal, the studio controller issues rules to shield the flow from entering the IP matrix. If the traffic is legal, the studio controller issues rules to trust the traffic, marks traffic characteristics and allows forwarding in the IP matrix.
And 4, step 4: after the IP matrix receives the rule issued by the studio controller, generating a strategy for the illegal flow and discarding the strategy; and for legal flow, scheduling by using a congestion-free algorithm according to the characteristics marked by the studio controller.
In summary, the method finds the unknown flow through a first package uploading detection mode, and accurately matches the seven-tuple; the method comprises the steps of authenticating the flow received by an IP matrix through negotiation with an upstream system, and obtaining the characteristics of a video stream; and issuing a strategy to the IP equipment through the controller, trusting legal flow and shielding illegal flow.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (8)
1. A method for multicast traffic detection, comprising:
after a control channel is established between a master controller and a studio, when the master controller detects unknown multicast flow, counting message information of the unknown multicast flow, inserting a data stream ID field and an authentication request field into the message information to generate message information containing a data stream ID and an authentication request, and sending the message information containing the data stream ID and the authentication request to the studio through the control channel so that the studio carries out validity verification on the unknown multicast flow corresponding to the message information according to the authentication request in the message information;
the studio judges whether the unknown multicast flow corresponding to the message information is legal multicast flow or not by using a preset multicast flow task list and the message information of the unknown multicast flow; the multicast flow task list comprises unknown multicast flow sent by a studio to a master control and message information of the unknown multicast flow;
when the unknown multicast flow is judged to be legal multicast flow, the studio sends a trust legal multicast flow instruction to the master controller through the control channel, so that the master controller forwards the unknown multicast flow according to the trust legal multicast flow instruction, and the method comprises the following steps: when the unknown multicast flow is judged to be legal multicast flow, the studio authenticates the stream characteristics of the unknown multicast flow to obtain the stream characteristics of the unknown multicast flow; the studio generates a trusted legal multicast flow indication containing the stream characteristics and the data stream ID according to the stream characteristics and the data stream ID; and the studio sends the trust legal multicast flow indication containing the stream characteristics and the data stream ID to the master controller through the control channel, so that the master controller obtains an unknown multicast flow corresponding to the data stream ID according to the data stream ID and forwards the unknown multicast flow according to the stream characteristics.
2. The method of claim 1, further comprising:
and when the unknown multicast flow is judged to be the illegal multicast flow, the studio sends an illegal multicast flow discarding indication to the master controller, so that the master controller discards the unknown multicast flow according to the illegal multicast flow discarding indication.
3. The method of claim 2, wherein the message information of the unknown multicast traffic comprises a bandwidth and an IP heptad.
4. The method of claim 3, wherein the step of the studio determining whether the unknown multicast traffic corresponding to the message information is a legal multicast traffic by using a preset multicast traffic task list and the message information of the unknown multicast traffic comprises:
when a multicast flow task list preset in the studio contains the message information of the unknown multicast flow, judging that the unknown multicast flow corresponding to the message information is legal multicast flow;
and when the multicast flow task list preset in the studio does not contain the message information of the unknown multicast flow, judging that the unknown multicast flow corresponding to the message information is illegal multicast flow.
5. The method according to claim 4, wherein when the unknown multicast traffic is determined to be an illegal multicast traffic, the studio sends an illegal multicast traffic discarding indication to the general control, so that the general control discards the unknown multicast traffic according to the illegal multicast traffic discarding indication includes:
when the unknown multicast flow is judged to be an illegal multicast flow, the studio generates an illegal multicast flow discarding indication containing a data flow ID;
and the studio sends the discarding legal multicast flow indication containing the data stream ID to the master controller, so that the master controller obtains unknown multicast flow corresponding to the data stream ID according to the data stream ID and discards the unknown multicast flow.
6. A system for multicast traffic detection, comprising:
the main control system is used for counting the message information of unknown multicast flow when the unknown multicast flow is detected after a control channel is established with a studio, inserting a data stream ID field and an authentication request field into the message information to generate the message information containing the data stream ID and the authentication request, and sending the message information containing the data stream ID and the authentication request to the studio through the control channel so that the studio carries out validity verification on the unknown multicast flow corresponding to the message information according to the authentication request in the message information; obtaining unknown multicast traffic corresponding to the data stream ID according to the data stream ID, and forwarding the unknown multicast traffic according to stream characteristics; and discarding the unknown multicast traffic according to the illegal multicast traffic discarding indication;
the studio is used for judging whether the unknown multicast flow corresponding to the message information is legal multicast flow or not by using a preset multicast flow task list and the message information of the unknown multicast flow; when the unknown multicast flow is judged to be legal multicast flow, performing authentication processing on the stream characteristics of the unknown multicast flow to obtain the stream characteristics of the unknown multicast flow, and generating a trusted legal multicast flow indication comprising the stream characteristics and the data stream ID according to the stream characteristics and the data stream ID; and sending the trusted legal multicast flow indication containing the flow characteristics and the data flow ID to the master control through the control channel; when the unknown multicast flow is judged to be an illegal multicast flow, the studio sends an illegal multicast flow discarding instruction to the master controller through the control channel; the multicast flow task list comprises unknown multicast flow sent by the studio to the master control and message information of the unknown multicast flow.
7. An electronic device, comprising: a memory; a processor; and a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 1-5.
8. A computer-readable storage medium, having stored thereon a computer program; the computer program is executed by a processor to implement the method of any one of claims 1-5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210791276.0A CN114885190B (en) | 2022-07-07 | 2022-07-07 | Method, system, equipment and storage medium for multicast traffic detection |
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| CN101159665A (en) * | 2007-08-28 | 2008-04-09 | 杭州华三通信技术有限公司 | Method and device to implement forwarding of unknown multicast packet to router port |
| CN102685117A (en) * | 2012-04-25 | 2012-09-19 | 浙江宇视科技有限公司 | Multicast safety management method and device |
| CN106341737A (en) * | 2016-08-18 | 2017-01-18 | 中央电视台 | IP multicast stream processing method, switch set, server and system |
| CN112866114A (en) * | 2020-12-31 | 2021-05-28 | 锐捷网络股份有限公司 | Multicast message processing method and device |
| CN113507574A (en) * | 2021-06-15 | 2021-10-15 | 中央广播电视总台 | System for processing and playing ultrahigh-definition video |
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| DE602004012529T2 (en) * | 2004-04-19 | 2009-05-07 | Alcatel Lucent | Control of multicast traffic |
| US11343786B2 (en) * | 2020-10-27 | 2022-05-24 | Electronics And Telecommunications Research Institute | Method for broadcast gateway signaling using cloud network and apparatus for the same |
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| CN101159665A (en) * | 2007-08-28 | 2008-04-09 | 杭州华三通信技术有限公司 | Method and device to implement forwarding of unknown multicast packet to router port |
| CN102685117A (en) * | 2012-04-25 | 2012-09-19 | 浙江宇视科技有限公司 | Multicast safety management method and device |
| CN106341737A (en) * | 2016-08-18 | 2017-01-18 | 中央电视台 | IP multicast stream processing method, switch set, server and system |
| CN112866114A (en) * | 2020-12-31 | 2021-05-28 | 锐捷网络股份有限公司 | Multicast message processing method and device |
| CN113507574A (en) * | 2021-06-15 | 2021-10-15 | 中央广播电视总台 | System for processing and playing ultrahigh-definition video |
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