阅读说明：本技术 一种资源释放方法和装置 (resource release method and device ) 是由 方小帅 秦鹏 袁庆宁 李云鹏 于 2018-06-07 设计创作，主要内容包括：本发明实施例提供了一种资源释放方法及装置,所述方法应用于视联网中,所述视联网包括相互通信的协转服务器、视联网服务器和第三方平台,所述方法包括：所述视联网服务器接收所述协转服务器发送的视频数据；所述视联网服务器将所述视频数据发送给所述第三方平台；当第三方平台无法接收到所述视频数据时,所述视联网服务器接收所述第三方平台的端口不可达指令；所述视联网服务器根据所述端口不可达指令,从所述第三方平台中确定目标第三方平台,并停止向所述目标第三方平台发送所述视频数据。本发明实施例能够实现,当目标第三方平台异常时,停止向目标第三方平台发送视频数据,达到释放视联网资源,避免网络资源浪费的效果。(The embodiment of the invention provides a resource release method and a device, wherein the method is applied to a video network, the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the method comprises the following steps: the video networking server receives the video data sent by the protocol conversion server; the video networking server sends the video data to the third-party platform; when a third-party platform cannot receive the video data, the video networking server receives a port unreachable instruction of the third-party platform; and the video networking server determines a target third-party platform from the third-party platforms according to the port inaccessible instruction and stops sending the video data to the target third-party platform. The embodiment of the invention can realize that when the target third-party platform is abnormal, the video data is stopped being sent to the target third-party platform, thereby achieving the effects of releasing the video networking resources and avoiding the waste of the network resources.)

1. A resource release method is applied to a video network, wherein the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the method comprises the following steps:

The video networking server receives the video data sent by the protocol conversion server;

the video networking server sends the video data to the third-party platform;

When a third-party platform cannot receive the video data, the video networking server receives a port unreachable instruction of the third-party platform;

And the video networking server determines a target third-party platform from the third-party platforms according to the port inaccessible instruction and stops sending the video data to the target third-party platform.

2. The method according to claim 1, wherein before the step of receiving the video data transmitted by the protocol server by the video networking server, the method further comprises:

the video networking server receives a video acquisition request sent by the third-party platform;

The video network server converts the video acquisition request into the monitoring acquisition request and sends the monitoring acquisition request to the protocol conversion server, and the protocol conversion server is used for extracting video data according to the monitoring acquisition request.

3. the method of claim 1, wherein the port unreachable instruction comprises: the IP address of the third party platform and the port identification of the data received by the third party platform;

the step that the video network server determines a target third-party platform from the third-party platforms according to the port-inaccessible instruction and stops sending the video data to the target third-party platform comprises the following steps:

The video networking server determines a target third-party platform which cannot receive video data from the third-party platforms according to the IP address of the third-party platform;

determining a port of the target third-party platform for receiving data according to the port identification of the third-party platform for receiving data;

And the video network server stops sending the video data to the port.

4. A resource release method is applied to a video network, wherein the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the method comprises the following steps:

The third-party platform receives video data sent by the video networking server, wherein the video data is received by the video networking server from the protocol conversion server;

When the video data cannot be received, the third-party platform sends a port unreachable instruction to the video networking server; and the video networking server is used for determining a target third-party platform from the third-party platforms according to the port unreachable instruction and stopping sending the video data to the target third-party platform.

5. The method of claim 4, further comprising:

The third-party platform sends a video acquisition request to the video networking server; the video network server is further configured to convert the video acquisition request into the monitoring acquisition request and send the monitoring acquisition request to the protocol conversion server, and the protocol conversion server is configured to extract video data according to the monitoring acquisition request.

6. a resource release device is applied to a video network, wherein the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the device comprises:

The first receiving module is used for the video networking server to receive the video data sent by the protocol conversion server;

The first sending module is used for sending the video data to the third-party platform by the video networking server;

the second receiving module is used for receiving the port unreachable instruction of the third-party platform by the video networking server when the third-party platform cannot receive the video data;

and the stopping module is used for determining a target third-party platform from the third-party platforms by the video networking server according to the port unreachable instruction and stopping sending the video data to the target third-party platform.

7. the apparatus of claim 6, further comprising:

The third receiving module is used for receiving the video acquisition request sent by the third-party platform by the video networking server;

And the second sending module is used for converting the video acquisition request into the monitoring acquisition request by the video networking server and sending the monitoring acquisition request to the coordination server, and the coordination server is used for extracting video data according to the monitoring acquisition request.

8. The apparatus of claim 6, wherein the port unreachable instruction comprises: the IP address of the third party platform and the port identification of the data received by the third party platform;

a second receiving module comprising:

the first determining unit is used for determining a target third-party platform which cannot receive video data from the third-party platforms by the video networking server according to the IP address of the third-party platform;

The second determining unit is used for determining a port of the target third-party platform for receiving the data according to the port identification of the third-party platform for receiving the data;

And the stopping unit is used for stopping the video networking server from sending the video data to the port.

9. a resource release device is applied to a video network, wherein the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the method comprises the following steps:

The fourth receiving module is used for receiving the video data sent by the video networking server by the third-party platform, wherein the video data is received from the protocol conversion server by the video networking server;

The third sending module is used for sending a port unreachable instruction to the video networking server by the third-party platform when the video data cannot be received; and the video networking server is used for determining a target third-party platform from the third-party platforms according to the port unreachable instruction and stopping sending the video data to the target third-party platform.

10. The apparatus of claim 9, further comprising:

The fourth sending module is used for sending a video acquisition request to the video networking server by the third-party platform; the video network server is further configured to convert the video acquisition request into the monitoring acquisition request and send the monitoring acquisition request to the protocol conversion server, and the protocol conversion server is configured to extract video data according to the monitoring acquisition request.

Technical Field

the present invention relates to the field of video networking technologies, and in particular, to a resource release method and a resource release apparatus.

Background

With the rapid development of network technologies, communication modes such as video conferences, video teaching, video monitoring and the like are widely popularized.

In video monitoring, a camera collects video data at a certain position, when a third-party platform requests the video data, the collected video data are sent to the third-party platform, however, when the third-party platform is abnormally closed, a server still sends the video data to the third-party platform, and resource waste is caused.

Disclosure of Invention

in view of the above problems, embodiments of the present invention are proposed to provide a resource release method and a corresponding resource release apparatus that overcome or at least partially solve the above problems.

In order to solve the above problem, a first aspect of the embodiments of the present invention discloses a resource release method, where the method is applied to a video network, where the video network includes a protocol conversion server, a video network server, and a third-party platform, and the method includes:

The video networking server receives the video data sent by the protocol conversion server;

The video networking server sends the video data to the third-party platform;

When a third-party platform cannot receive the video data, the video networking server receives a port unreachable instruction of the third-party platform;

And the video networking server determines a target third-party platform from the third-party platforms according to the port inaccessible instruction and stops sending the video data to the target third-party platform.

Preferably, before the step of receiving, by the video networking server, the video data sent by the protocol server, the method further includes:

the video networking server receives a video acquisition request sent by the third-party platform;

the video network server converts the video acquisition request into the monitoring acquisition request and sends the monitoring acquisition request to the protocol conversion server, and the protocol conversion server is used for extracting video data according to the monitoring acquisition request.

Preferably, the port unreachable instruction includes: the IP address of the third party platform and the port identification of the data received by the third party platform;

the step that the video network server determines a target third-party platform from the third-party platforms according to the port-inaccessible instruction and stops sending the video data to the target third-party platform comprises the following steps:

The video networking server determines a target third-party platform which cannot receive video data from the third-party platforms according to the IP address of the third-party platform;

determining a port of the target third-party platform for receiving data according to the port identification of the third-party platform for receiving data;

And the video network server stops sending the video data to the port.

The second aspect of the embodiment of the invention discloses a resource release method, which is applied to a video network, wherein the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the method comprises the following steps:

the third-party platform receives video data sent by the video networking server, wherein the video data is received by the video networking server from the protocol conversion server;

When the video data cannot be received, the third-party platform sends a port unreachable instruction to the video networking server; and the video networking server is used for determining a target third-party platform from the third-party platforms according to the port unreachable instruction and stopping sending the video data to the target third-party platform.

Preferably, the method further comprises the following steps:

the third-party platform sends a video acquisition request to the video networking server; the video network server is further configured to convert the video acquisition request into the monitoring acquisition request and send the monitoring acquisition request to the protocol conversion server, and the protocol conversion server is configured to extract video data according to the monitoring acquisition request.

The third aspect of the embodiment of the invention discloses a resource release device, which is applied to a video network, wherein the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other, and the device comprises:

The first receiving module is used for the video networking server to receive the video data sent by the protocol conversion server;

The first sending module is used for sending the video data to the third-party platform by the video networking server;

the second receiving module is used for receiving the port unreachable instruction of the third-party platform by the video networking server when the third-party platform cannot receive the video data;

and the stopping module is used for determining a target third-party platform from the third-party platforms by the video networking server according to the port unreachable instruction and stopping sending the video data to the target third-party platform.

Preferably, the method further comprises the following steps:

The third receiving module is used for receiving the video acquisition request sent by the third-party platform by the video networking server;

and the second sending module is used for converting the video acquisition request into the monitoring acquisition request by the video networking server and sending the monitoring acquisition request to the coordination server, and the coordination server is used for extracting video data according to the monitoring acquisition request.

preferably, the port unreachable instruction includes: the IP address of the third party platform and the port identification of the data received by the third party platform;

A second receiving module comprising:

The first determining unit is used for determining a target third-party platform which cannot receive video data from the third-party platforms by the video networking server according to the IP address of the third-party platform;

the second determining unit is used for determining a port of the target third-party platform for receiving the data according to the port identification of the third-party platform for receiving the data;

and the stopping unit is used for stopping the video networking server from sending the video data to the port.

The fourth aspect of the embodiments of the present invention discloses a resource release device, which is applied to a video network, where the video network includes a protocol server, a video network server and a third-party platform, and the method includes:

the fourth receiving module is used for receiving the video data sent by the video networking server by the third-party platform, wherein the video data is received from the protocol conversion server by the video networking server;

the third sending module is used for sending a port unreachable instruction to the video networking server by the third-party platform when the video data cannot be received; and the video networking server is used for determining a target third-party platform from the third-party platforms according to the port unreachable instruction and stopping sending the video data to the target third-party platform.

Preferably, the method further comprises the following steps:

The fourth sending module is used for sending a video acquisition request to the video networking server by the third-party platform; the video network server is further configured to convert the video acquisition request into the monitoring acquisition request and send the monitoring acquisition request to the protocol conversion server, and the protocol conversion server is configured to extract video data according to the monitoring acquisition request.

The embodiment of the invention has the following advantages:

the embodiment of the invention applies the characteristics of the video network, and receives the video data sent by the protocol conversion server through the video network server; the video networking server sends the video data to the third-party platform; when a third-party platform cannot receive the video data, the video networking server receives a port unreachable instruction of the third-party platform; and the video networking server determines a target third-party platform from the third-party platforms according to the port inaccessible instruction and stops sending the video data to the target third-party platform. The method can be realized, when the target third-party platform is abnormal, the video data is stopped being sent to the target third-party platform, and the effects of releasing the video networking resources and avoiding the network resource waste are achieved.

drawings

FIG. 1 is a schematic networking diagram of a video network of the present invention;

FIG. 2 is a schematic diagram of a hardware architecture of a node server according to the present invention;

Fig. 3 is a schematic diagram of a hardware structure of an access switch of the present invention;

Fig. 4 is a schematic diagram of a hardware structure of an ethernet protocol conversion gateway according to the present invention;

FIG. 5 is a schematic diagram of a video networking data transfer process of the present invention;

FIG. 6 is a flowchart of the steps of a method for resource release in accordance with the present invention;

FIG. 7 is a flowchart of the steps of another method of resource release of the present invention;

fig. 8 is a block diagram of a resource release apparatus according to an embodiment of the present invention;

fig. 9 is a block diagram of another embodiment of the resource release apparatus according to the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

the video networking is an important milestone for network development, is a real-time network, can realize high-definition video real-time transmission, and pushes a plurality of internet applications to high-definition video, and high-definition faces each other.

The video networking adopts a real-time high-definition video exchange technology, can integrate required services such as dozens of services of video, voice, pictures, characters, communication, data and the like on a system platform on a network platform, such as high-definition video conference, video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, VOD on demand, television mail, Personal Video Recorder (PVR), intranet (self-office) channels, intelligent video broadcast control, information distribution and the like, and realizes high-definition quality video broadcast through a television or a computer.

to better understand the embodiments of the present invention, the following description refers to the internet of view:

Some of the technologies applied in the video networking are as follows:

network Technology (Network Technology)

Network technology innovation in video networking has improved over traditional Ethernet (Ethernet) to face the potentially enormous video traffic on the network. Unlike pure network Packet Switching (Packet Switching) or network circuit Switching (circuit Switching), the Packet Switching is adopted by the technology of the video networking to meet the Streaming requirement. The video networking technology has the advantages of flexibility, simplicity and low price of packet switching, and simultaneously has the quality and safety guarantee of circuit switching, thereby realizing the seamless connection of the whole network switching type virtual circuit and the data format.

switching Technology (Switching Technology)

the video network adopts two advantages of asynchronism and packet switching of the Ethernet, eliminates the defects of the Ethernet on the premise of full compatibility, has end-to-end seamless connection of the whole network, is directly communicated with a user terminal, and directly bears an IP data packet. The user data does not require any format conversion across the entire network. The video networking is a higher-level form of the Ethernet, is a real-time exchange platform, can realize the real-time transmission of the whole-network large-scale high-definition video which cannot be realized by the existing Internet, and pushes a plurality of network video applications to high-definition and unification.

server Technology (Server Technology)

The server technology on the video networking and unified video platform is different from the traditional server, the streaming media transmission of the video networking and unified video platform is established on the basis of connection orientation, the data processing capacity of the video networking and unified video platform is independent of flow and communication time, and a single network layer can contain signaling and data transmission. For voice and video services, the complexity of video networking and unified video platform streaming media processing is much simpler than that of data processing, and the efficiency is greatly improved by more than one hundred times compared with that of a traditional server.

storage Technology (Storage Technology)

The super-high speed storage technology of the unified video platform adopts the most advanced real-time operating system in order to adapt to the media content with super-large capacity and super-large flow, the program information in the server instruction is mapped to the specific hard disk space, the media content is not passed through the server any more, and is directly sent to the user terminal instantly, and the general waiting time of the user is less than 0.2 second. The optimized sector distribution greatly reduces the mechanical motion of the magnetic head track seeking of the hard disk, the resource consumption only accounts for 20% of that of the IP internet of the same grade, but concurrent flow which is 3 times larger than that of the traditional hard disk array is generated, and the comprehensive efficiency is improved by more than 10 times.

Network Security Technology (Network Security Technology)

the structural design of the video network completely eliminates the network security problem troubling the internet structurally by the modes of independent service permission control each time, complete isolation of equipment and user data and the like, generally does not need antivirus programs and firewalls, avoids the attack of hackers and viruses, and provides a structural carefree security network for users.

service Innovation Technology (Service Innovation Technology)

The unified video platform integrates services and transmission, and is not only automatically connected once whether a single user, a private network user or a network aggregate. The user terminal, the set-top box or the PC are directly connected to the unified video platform to obtain various multimedia video services in various forms. The unified video platform adopts a menu type configuration table mode to replace the traditional complex application programming, can realize complex application by using very few codes, and realizes infinite new service innovation.

networking of the video network is as follows:

the video network is a centralized control network structure, and the network can be a tree network, a star network, a ring network and the like, but on the basis of the centralized control node, the whole network is controlled by the centralized control node in the network.

As shown in fig. 1, the video network is divided into an access network and a metropolitan network.

the devices of the access network part can be mainly classified into 3 types: node server, access switch, terminal (including various set-top boxes, coding boards, memories, etc.). The node server is connected to an access switch, which may be connected to a plurality of terminals and may be connected to an ethernet network.

The node server is a node which plays a centralized control function in the access network and can control the access switch and the terminal. The node server can be directly connected with the access switch or directly connected with the terminal.

Similarly, devices of the metropolitan network portion may also be classified into 3 types: a metropolitan area server, a node switch and a node server. The metro server is connected to a node switch, which may be connected to a plurality of node servers.

the node server is a node server of the access network part, namely the node server belongs to both the access network part and the metropolitan area network part.

The metropolitan area server is a node which plays a centralized control function in the metropolitan area network and can control a node switch and a node server. The metropolitan area server can be directly connected with the node switch or directly connected with the node server.

Therefore, the whole video network is a network structure with layered centralized control, and the network controlled by the node server and the metropolitan area server can be in various structures such as tree, star and ring.

the access network part can form a unified video platform (the part in the dotted circle), and a plurality of unified video platforms can form a video network; each unified video platform may be interconnected via metropolitan area and wide area video networking.

Video networking device classification

1.1 devices in the video network of the embodiment of the present invention can be mainly classified into 3 types: servers, switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.). The video network as a whole can be divided into a metropolitan area network (or national network, global network, etc.) and an access network.

1.2 wherein the devices of the access network part can be mainly classified into 3 types: node servers, access switches (including ethernet gateways), terminals (including various set-top boxes, code boards, memories, etc.).

The specific hardware structure of each access network device is as follows:

a node server:

as shown in fig. 2, the system mainly includes a network interface module 201, a switching engine module 202, a CPU module 203, and a disk array module 204;

The network interface module 201, the CPU module 203, and the disk array module 204 all enter the switching engine module 202; the switching engine module 202 performs an operation of looking up the address table 205 on the incoming packet, thereby obtaining the direction information of the packet; and stores the packet in a queue of the corresponding packet buffer 206 based on the packet's steering information; if the queue of the packet buffer 206 is nearly full, it is discarded; the switching engine module 202 polls all packet buffer queues for forwarding if the following conditions are met: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero. The disk array module 204 mainly implements control over the hard disk, including initialization, read-write, and other operations on the hard disk; the CPU module 203 is mainly responsible for protocol processing with an access switch and a terminal (not shown in the figure), configuring an address table 205 (including a downlink protocol packet address table, an uplink protocol packet address table, and a data packet address table), and configuring the disk array module 204.

the access switch:

as shown in fig. 3, the network interface module mainly includes a network interface module (a downlink network interface module 301 and an uplink network interface module 302), a switching engine module 303 and a CPU module 304;

wherein, the packet (uplink data) coming from the downlink network interface module 301 enters the packet detection module 305; the packet detection module 305 detects whether the Destination Address (DA), the Source Address (SA), the packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id) and enters the switching engine module 303, otherwise, discards the stream identifier; the packet (downstream data) coming from the upstream network interface module 302 enters the switching engine module 303; the data packet coming from the CPU module 204 enters the switching engine module 303; the switching engine module 303 performs an operation of looking up the address table 306 on the incoming packet, thereby obtaining the direction information of the packet; if the packet entering the switching engine module 303 is from the downstream network interface to the upstream network interface, the packet is stored in the queue of the corresponding packet buffer 307 in association with the stream-id; if the queue of the packet buffer 307 is nearly full, it is discarded; if the packet entering the switching engine module 303 is not from the downlink network interface to the uplink network interface, the data packet is stored in the queue of the corresponding packet buffer 307 according to the guiding information of the packet; if the queue of the packet buffer 307 is nearly full, it is discarded.

The switching engine module 303 polls all packet buffer queues, which in this embodiment of the present invention is divided into two cases:

if the queue is from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queued packet counter is greater than zero; 3) obtaining a token generated by a code rate control module;

if the queue is not from the downlink network interface to the uplink network interface, the following conditions are met for forwarding: 1) the port send buffer is not full; 2) the queue packet counter is greater than zero.

The rate control module 208 is configured by the CPU module 204, and generates tokens for packet buffer queues from all downstream network interfaces to upstream network interfaces at programmable intervals to control the rate of upstream forwarding.

the CPU module 304 is mainly responsible for protocol processing with the node server, configuration of the address table 306, and configuration of the code rate control module 308.

Ethernet protocol conversion gateway：

as shown in fig. 4, the apparatus mainly includes a network interface module (a downlink network interface module 401 and an uplink network interface module 402), a switching engine module 403, a CPU module 404, a packet detection module 405, a rate control module 408, an address table 406, a packet buffer 407, a MAC adding module 409, and a MAC deleting module 410.

wherein, the data packet coming from the downlink network interface module 401 enters the packet detection module 405; the packet detection module 405 detects whether the ethernet MAC DA, the ethernet MAC SA, the ethernet length or frame type, the video network destination address DA, the video network source address SA, the video network packet type, and the packet length of the packet meet the requirements, and if so, allocates a corresponding stream identifier (stream-id); then, the MAC deletion module 410 subtracts MAC DA, MAC SA, length or frame type (2byte) and enters the corresponding receiving buffer, otherwise, discards it;

the downlink network interface module 401 detects the sending buffer of the port, and if there is a packet, obtains the ethernet MAC DA of the corresponding terminal according to the destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MACSA of the ethernet coordination gateway, and the ethernet length or frame type, and sends the packet.

The other modules in the ethernet protocol gateway function similarly to the access switch.

A terminal:

The system mainly comprises a network interface module, a service processing module and a CPU module; for example, the set-top box mainly comprises a network interface module, a video and audio coding and decoding engine module and a CPU module; the coding board mainly comprises a network interface module, a video and audio coding engine module and a CPU module; the memory mainly comprises a network interface module, a CPU module and a disk array module.

1.3 devices of the metropolitan area network part can be mainly classified into 2 types: node server, node exchanger, metropolitan area server. The node switch mainly comprises a network interface module, a switching engine module and a CPU module; the metropolitan area server mainly comprises a network interface module, a switching engine module and a CPU module.

2. Video networking packet definition

2.1 Access network packet definition

the data packet of the access network mainly comprises the following parts: destination Address (DA), Source Address (SA), reserved bytes, payload (pdu), CRC.

As shown in the following table, the data packet of the access network mainly includes the following parts:

DA

SA

Reserved

Payload

CRC

wherein:

The Destination Address (DA) is composed of 8 bytes (byte), the first byte represents the type of the data packet (such as various protocol packets, multicast data packets, unicast data packets, etc.), there are 256 possibilities at most, the second byte to the sixth byte are metropolitan area network addresses, and the seventh byte and the eighth byte are access network addresses;

The Source Address (SA) is also composed of 8 bytes (byte), defined as the same as the Destination Address (DA);

the reserved byte consists of 2 bytes;

The payload part has different lengths according to different types of datagrams, and is 64 bytes if the datagram is various types of protocol packets, and is 32+1024 or 1056 bytes if the datagram is a unicast packet, of course, the length is not limited to the above 2 types;

The CRC consists of 4 bytes and is calculated in accordance with the standard ethernet CRC algorithm.

2.2 metropolitan area network packet definition

the topology of a metropolitan area network is a graph and there may be 2, or even more than 2, connections between two devices, i.e., there may be more than 2 connections between a node switch and a node server, a node switch and a node switch, and a node switch and a node server. However, the metro network address of the metro network device is unique, and in order to accurately describe the connection relationship between the metro network devices, parameters are introduced in the embodiment of the present invention: a label to uniquely describe a metropolitan area network device.

in this specification, the definition of the Label is similar to that of the Label of MPLS (Multi-Protocol Label Switch), and assuming that there are two connections between the device a and the device B, there are 2 labels for the packet from the device a to the device B, and 2 labels for the packet from the device B to the device a. The label is classified into an incoming label and an outgoing label, and assuming that the label (incoming label) of the packet entering the device a is 0x0000, the label (outgoing label) of the packet leaving the device a may become 0x 0001. The network access process of the metro network is a network access process under centralized control, that is, address allocation and label allocation of the metro network are both dominated by the metro server, and the node switch and the node server are both passively executed, which is different from label allocation of MPLS, and label allocation of MPLS is a result of mutual negotiation between the switch and the server.

As shown in the following table, the data packet of the metro network mainly includes the following parts:

DA

SA

Reserved

label (R)

Payload

CRC

Namely Destination Address (DA), Source Address (SA), Reserved byte (Reserved), tag, payload (pdu), CRC. The format of the tag may be defined by reference to the following: the tag is 32 bits with the upper 16 bits reserved and only the lower 16 bits used, and its position is between the reserved bytes and payload of the packet.

based on the characteristics of the video network, one of the core concepts of the embodiment of the invention is provided, the third-party platform of the local terminal requests the server to control the camera connected with the set-top box of the opposite terminal according to the protocol of the video network, and when the third-party platform of the local terminal is abnormally closed, the server is controlled to stop sending the video data to the third-party platform of the local terminal.

In the embodiment of the invention, the video network comprises a protocol conversion server, a video network server and a third-party platform which are communicated with each other.

Referring to fig. 5, in the embodiment of the present invention, the video network may include a plurality of third party platforms, and the third party platforms are specifically platforms for watching monitoring videos, for example, a police monitoring platform, a political law monitoring platform, and the like. The multiple cameras upload the acquired video data to the coordination server, the coordination server transmits the video networking server to the video networking server, and the video networking server sends the video networking server to the corresponding third-party platform.