CN110138631B - Connectivity detection method of video network tunnel and terminal equipment - Google Patents
Connectivity detection method of video network tunnel and terminal equipment Download PDFInfo
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- CN110138631B CN110138631B CN201910229608.4A CN201910229608A CN110138631B CN 110138631 B CN110138631 B CN 110138631B CN 201910229608 A CN201910229608 A CN 201910229608A CN 110138631 B CN110138631 B CN 110138631B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/82—Miscellaneous aspects
- H04L47/825—Involving tunnels, e.g. MPLS
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Abstract
The embodiment of the application discloses a connectivity detection method of a video network tunnel, which is used for avoiding the abnormity of a video network tunnel state machine caused by protocol message loss with small probability. The method is applied to a video networking system, the video networking system comprises a first terminal device and a second terminal device, the first terminal device and the second terminal device are connected through a first video networking tunnel, and the method comprises the following steps: if the second terminal equipment does not receive the first message sent by the first terminal equipment within the preset time length, the second terminal equipment generates an initialization instruction, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel; and the second terminal equipment initializes the first video network tunnel according to the initialization instruction.
Description
Technical Field
The present application relates to the field of video networking technologies, and in particular, to a method for detecting connectivity of a video networking tunnel and a terminal device.
Background
The existing state machine of the video network tunnel realizes the switching of the state machine by depending on the protocol message interaction between the terminal and the server. However, packet loss inevitably occurs in the video network, which may cause the state of the tunneling protocol state machine of the video network to be inconsistent with the actual state due to the loss of some important message protocols.
Disclosure of Invention
The embodiment of the application provides a connectivity detection method of a video network tunnel and terminal equipment, which are used for avoiding state machine abnormity caused by protocol message loss with small probability. And the data service forwarding cannot be recovered, and the state machine can be initialized and normal data forwarding can be continued when the state machine is in error through the detection of the forwarding of the tunnel message of the video networking.
In view of this, a first aspect of the present invention provides a method for detecting connectivity of a tunnel of a video network, where the method is applied to a video network system, where the video network system includes a first terminal device and a second terminal device, and the first terminal device and the second terminal device establish a connection through the first tunnel of the video network, and the method may include:
the first terminal equipment generates a first message, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel;
and the first terminal equipment sends the first message to the second terminal equipment through the first video network tunnel, wherein the first message is used for the second terminal equipment to carry out connectivity detection on the first video network tunnel.
Optionally, in some embodiments of the present invention, the method may further include:
if the first terminal equipment does not receive a second message sent by the second terminal equipment within a preset time length, the first terminal equipment generates an initialization instruction, and the second message comprises the preset identifier and the identifier of the first video network tunnel;
and the first terminal equipment initializes the first video network tunnel according to the initialization instruction.
The second party of the invention provides a method for detecting the connectivity of a video network tunnel, which is applied to a video network system, wherein the video network system comprises a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through the first video network tunnel, and the method comprises the following steps:
if the second terminal equipment does not receive the first message sent by the first terminal equipment within the preset time length, the second terminal equipment generates an initialization instruction, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel;
and the second terminal equipment initializes the first video network tunnel according to the initialization instruction.
Optionally, in some embodiments of the present invention, the method may further include:
the second terminal equipment generates a second message, wherein the second message comprises the preset identifier and the identifier of the first video network tunnel;
and the second terminal equipment sends the second message to the first terminal equipment through the first video network tunnel, wherein the second message is used for the first terminal equipment to carry out connectivity detection on the first video network tunnel.
Optionally, in some embodiments of the present invention, the initializing, by the second terminal device, the first video networking tunnel according to the initialization instruction may include:
the second terminal device sets the state of the second terminal device as initial power-on according to the initialization instruction, and the first video network tunnel is switched to be disconnected;
and the second terminal equipment accesses the video network again to establish a second video network tunnel.
Optionally, in some embodiments of the present invention, the method may further include:
and if the second terminal equipment receives the first message sent by the first terminal equipment within the preset time length, the second terminal equipment sends the first message to a central processing unit for processing.
A third aspect of the present invention provides a first terminal device, where the first terminal device is applied to a video networking system, the video networking system includes the first terminal device and a second terminal device, the first terminal device and the second terminal device establish a connection through a first video networking tunnel, and the first terminal device includes:
the processing module is used for generating a first message, and the first message comprises a preset identifier and an identifier of the first video network tunnel;
and the sending module is used for sending the first message to the second terminal equipment through the first video network tunnel, and the first message is used for the second terminal equipment to carry out connectivity detection on the first video network tunnel.
Alternatively, in some embodiments of the present invention,
the processing module is specifically configured to, if the first terminal device does not receive a second message sent by the second terminal device within a preset duration, generate an initialization instruction by the first terminal device, where the second message includes the preset identifier and an identifier of the first video network tunnel; and initializing the first video network tunnel according to the initialization instruction.
A third aspect of the present invention provides a second terminal device, where the second terminal device is applied to a video networking system, the video networking system includes the first terminal device and a second terminal device, the first terminal device and the second terminal device establish a connection through a first video networking tunnel, and the second terminal device includes:
the processing module is used for generating an initialization instruction by the second terminal equipment if the second terminal equipment does not receive a first message sent by the first terminal equipment within a preset time length, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel; and initializing the first video network tunnel according to the initialization instruction.
Alternatively, in some embodiments of the present invention,
the processing module is further configured to generate a second message, where the second message includes the preset identifier and the identifier of the first video network tunnel;
the second terminal device may further include: a sending module for sending the data to the receiving module,
the sending module is configured to send the second packet to the first terminal device through the first video network tunnel, where the second packet is used for the first terminal device to perform connectivity detection of the first video network tunnel.
Alternatively, in some embodiments of the present invention,
the processing module is specifically configured to set a state of the second terminal device to be initially powered on according to the initialization instruction, and turn the first video network tunnel to be disconnected; and re-accessing the video network and establishing a second video network tunnel.
Optionally, in some embodiments of the present invention, the second terminal device may further include: a sending module for sending the data to the receiving module,
and the sending module is used for sending the first message to a central processing unit for processing if the second terminal equipment receives the first message sent by the first terminal equipment within the preset time length.
According to the technical scheme, the embodiment of the application has the following advantages:
in the embodiment of the invention, the method is applied to a video networking system, the video networking system comprises a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through a first video networking tunnel, if the second terminal device does not receive a first message sent by the first terminal device within a preset time length, the second terminal device generates an initialization instruction, and the first message comprises a preset identifier and an identifier of the first video networking tunnel; and the second terminal equipment initializes the second terminal equipment according to the initialization instruction. The method is used for avoiding the state machine abnormity caused by protocol message loss with small probability. And the data service forwarding cannot be recovered, and the state machine can be initialized and normal data forwarding can be continued when the state machine is in error through the detection of the forwarding of the tunnel message of the video networking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the embodiments and the drawings used in the description of the prior art, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to the 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 data transmission process during upgrading of a terminal device according to the present invention;
FIG. 6 is a diagram illustrating a scenario in which an embodiment of the present invention is applied;
FIG. 7 is a schematic diagram of a design used in an embodiment of the present invention;
FIG. 8 is a diagram of an embodiment of a method for detecting connectivity of a tunnel in a video networking according to an embodiment of the present invention;
fig. 9 is a schematic diagram of another embodiment of a connectivity detection method for a tunnel of a video network according to an embodiment of the present invention;
FIG. 10 is a schematic flow chart illustrating an embodiment of the present invention;
fig. 11 is a schematic diagram of an embodiment of a first terminal device in the embodiment of the present invention;
fig. 12 is a schematic diagram of an embodiment of a second terminal device in the embodiment of the present invention;
fig. 13 is a schematic diagram of another embodiment of the second terminal device in the embodiment of the present invention.
Detailed Description
For a person skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. The embodiments in the present application shall fall within the protection scope of the present application.
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 a high-definition Video conference, Video monitoring, intelligent monitoring analysis, emergency command, digital broadcast television, delayed television, network teaching, live broadcast, interactive television on Demand (VOD) system, television mail, Personal Video Recorder (PVR), intranet (self-office) channel, intelligent Video broadcast control, information distribution and the like, and realizes high-definition quality Video playing 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 video networking destination address DA of the packet, adds the ethernet MAC DA of the terminal, the MAC SA 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, the invention provides one of the core concepts of the embodiment, and a network management server manages all terminal equipment according to the protocol of the video network; the data storage server stores various data packages including an upgrading program package, and the terminal device acquires the upgrading program package to carry out program upgrading.
In the embodiment of the invention, the video network comprises the terminal equipment, and the network management server and the data storage server which are communicated with the terminal equipment.
Referring to fig. 5, in the embodiment of the present invention, the communication between the terminal device and the network management server and the data storage server is transmitted through the video network.
At present, the state of the tunnel of the video network is guaranteed by protocol message interaction, but a phenomenon that a tunnel state machine is inconsistent with an actual state may occur, for example: the internet of view tunnel can not forward data, but the state of the internet of view tunnel on the internet of view is connected. The invention can detect whether the data forwarding capability of the tunnel of the video network is normal. The tunnel state machine avoids the condition that the tunnel state is abnormal due to abnormity of the tunnel state machine.
As shown in fig. 6, a scene schematic diagram applied in the embodiment of the present invention may include: the cat consists of a cat, an internet of vision and a cat.
The following is a brief description of the terms involved in the embodiments of the present invention, as follows:
and (3) video networking: the video networking is a real-time national global full high-definition video network constructed based on the video networking technology.
And (3) viewing the cat: the internet of view cat is a product for expanding the application research and development of the internet of view platform in order to meet the application requirements of users of the internet of view to access non-internet of view (internet, IPTV private network, business private network in other fields, etc.), and is an access device for the internet of view to bear the existing network application based on the IP system.
The King of the Feiyan cat: the King of the Internet of things aims to meet the application requirements of users of the Internet of things for accessing non-Internet of things (Internet, IPTV private network, business private networks in other fields and the like), and expands a product developed by the application of an Internet of things platform, and the King of the Internet of things is convergence equipment for the Internet of things to bear the existing network application based on an IP system.
A video networking tunnel: a point-to-point video network tunnel is established by the modem and the modem, a user accesses the video network tunnel from one side of the tunnel, and accesses servers (such as the Internet, an IPTV private network and other field service private networks) from the other side of the tunnel, so that 'in-building IP and outside-building video connection' is realized.
Video networking tunnel state: the video network tunnel establishment is divided into two processes, firstly, the cat and the cat king are connected to the server, then the cat starts to dial actively, the video network service is established with the cat king, the video network access is firstly powered on, the cat is connected to the network, and the video network tunnel state is divided into unconnected state and connected state.
Data connectivity detection: the data forwarding capability of the tunnel of the video network is detected, user data is simulated to be injected into the tunnel of the video network, whether the data can be forwarded normally or not is checked, and whether the connectivity is normal or not is checked.
It should be noted that the first terminal device and the second terminal device in the embodiment of the present invention may include another device such as a crosstalker (also referred to as a crosstalker device), and the like. When the first terminal equipment is the view ally oneself with cat, the second terminal equipment is the view ally oneself with cat king, and when the first terminal equipment is the view ally oneself with cat king, the second terminal equipment is the view ally oneself with cat.
Fig. 7 is a schematic diagram of a design scheme applied in the embodiment of the present invention.
Supposing that the modem interconnection device needs to send a connectivity detection message, the message can simulate a user message to be sent to a network interconnection tunnel, is packaged into a network interconnection message corresponding to the tunnel, is sent to a server, and is forwarded to the modem interconnection device by the server.
The method comprises the steps of constructing a connectivity detection message, specifying a characteristic field for the message, normally forwarding the normal service message in order to distinguish the message from the normal service message, and sending the detection message to a Central Processing Unit (CPU), wherein the detection message cannot influence the normal service message forwarding and can also play a role in detecting the data forwarding connectivity of the video network tunnel. A rule is also required to be set on the modem equipment and modem king equipment to ensure that the connectivity detection message is sent to the CPU and the service data message of the user is still forwarded normally.
The video networking tunnel uses a video telephone technology provided by the video networking, and after the video networking and the King of the video networking establish the video networking tunnel, the video networking tunnel can forward a video service message of a message type 2002 and also can forward a voice message of a message type 2001. The two messages are normally established depending on the video telephone service connection, and for a server, whether the two messages can be forwarded or not is directly associated with the connection establishment of the video networking tunnel, in other words, the 2001 message cannot be passed, so the 2002 message cannot be forwarded definitely, and when the 2001 message and the 2002 message cannot be forwarded, the video networking tunnel is not in a connected state definitely, so in the invention, the problem that the state of a state machine of a video networking tunnel protocol is inconsistent with the actual state can be solved by taking the 2001 message as a detection message and taking the 2002 message as a data forwarding message.
Fig. 8 is a schematic diagram illustrating an embodiment of a connectivity detection method for a tunnel of a video network according to an embodiment of the present invention. The embodiment is applied to a video networking system, the video networking system includes a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through a first video networking tunnel, and the embodiment may include:
801. and the first terminal equipment generates a first message, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel.
The generation of the first message by the cat of the union may include: the method includes that the video network responds to input operation of a user to generate a first message, the first message can include a preset identifier and an identifier of a first video network tunnel, and the preset identifier can be used for indicating that when the second terminal device receives the message containing the preset identifier, the message is proved to be used for detecting connectivity of the first video network tunnel. The preset identifier may be a letter, a number, or a combination of a letter and a number, and the like, and the specific manner is not limited. Of course, in general, the cat king indicates that the first internet of view tunnel is connected if it receives the first message.
For example, in the embodiment of the present invention, the first packet may also be understood as a 2001 packet. The second terminal device comprises a plurality of virtual terminals, and the identifier of the first video network tunnel may be an identifier of a virtual terminal on the second terminal device, and the like.
802. And the first terminal equipment sends the first message to the second terminal equipment through the first video network tunnel, wherein the first message is used for the second terminal equipment to carry out connectivity detection on the first video network tunnel.
If the first message is received by the second terminal equipment within the preset time length, the second terminal equipment determines that the first video network tunnel is in a connected state; if the first message is not received by the second terminal device within the preset time length, the second terminal device determines that the first video network tunnel is in a disconnected state, and the first terminal device and the second terminal device need to be reinitialized. Namely, the first terminal device and the second terminal device need to accept the video network again, and establish a second video network tunnel for communication.
It should be noted that the preset duration here can be flexibly adjusted according to actual requirements, and is not specifically limited here.
In the embodiment of the invention, the method is applied to a video networking system, the video networking system comprises a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through a first video networking tunnel, the first terminal device generates a first message, and the first message comprises a preset identifier and an identifier of the first video networking tunnel; and the first terminal equipment sends the first message to the second terminal equipment through the first video network tunnel, wherein the first message is used for the second terminal equipment to carry out connectivity detection on the first video network tunnel. And a judgment basis is provided for the second terminal equipment to determine whether the first video network tunnel is connected or not.
Alternatively, in some embodiments of the present invention,
if the first terminal equipment does not receive a second message sent by the second terminal equipment within a preset time length, the first terminal equipment generates an initialization instruction, and the second message comprises the preset identifier and the identifier of the first video network tunnel;
and the first terminal equipment initializes the first video network tunnel according to the initialization instruction.
Fig. 9 is a schematic diagram illustrating another embodiment of a connectivity detection method for a tunnel of a video network according to an embodiment of the present invention. The embodiment is applied to a video networking system, the video networking system includes a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through a first video networking tunnel, and the embodiment may include:
901. if the second terminal device does not receive the first message sent by the first terminal device within the preset time length, the second terminal device generates an initialization instruction, and the first message comprises a preset identifier and an identifier of the first video network tunnel.
In the embodiment of the invention, the cat king and the cat king fill in the identifier of the opposite end by sending 2001 messages and send the messages to the corresponding first video network tunnel, and the server receives the detection message (2011 message) and sends the detection message to the cat king through the forwarding table item. Relevant rules of 2001 messages are set up on the King of the Union cat, and the 2001 messages are sent to the CPU for processing when the field is detected. The opposite direction is also the same. Therefore, connectivity of the tunnel data forwarding of the video network is detected through the 2001 message.
Alternatively, in some embodiments of the present invention,
and if the second terminal equipment receives the first message sent by the first terminal equipment within the preset time length, the second terminal equipment sends the first message to a central processing unit for processing.
Alternatively, in some embodiments of the present invention,
and the second terminal equipment generates a second message, wherein the second message comprises a preset identifier and the identifier of the first video network tunnel. The generation of the second message by the modem cat may include: the internet of view king responds to the input operation of the user to generate a second message, and the second message can comprise a preset identifier and an identifier of the first internet of view tunnel.
Alternatively, in some embodiments of the present invention,
and if the second terminal equipment does not receive the first message sent by the first terminal equipment within the preset time length, the second terminal equipment does not send a second message to the first terminal equipment.
902. And the second terminal equipment initializes the first video network tunnel according to the initialization instruction.
The initializing, by the second terminal device, the first video networking tunnel according to the initialization instruction may include: the second terminal device sets the state of the second terminal device as initial power-on according to the initialization instruction, and the first video network tunnel is switched to be disconnected; and the second terminal equipment accesses the video network again to establish a second video network tunnel.
It should be noted that the preset duration here can be flexibly adjusted according to actual requirements, and is not specifically limited here.
Illustratively, when a 2001 message sent by an opposite terminal is not received in 5 sending periods through a timer in the modem/modem king, the system judges that the first video networking tunnel is abnormally forwarded, executes initialization operation, sets the state of the virtual terminal to be initially powered on, turns the first video networking tunnel to be disconnected, enables the first terminal device and the second terminal device to re-access the network, re-dials the video telephone, and re-establishes the second video networking tunnel.
In the embodiment of the invention, the method is applied to a video networking system, the video networking system comprises a first terminal device and a second terminal device, the first terminal device and the second terminal device establish connection through a first video networking tunnel, if the second terminal device does not receive a first message sent by the first terminal device within a preset time length, the second terminal device generates an initialization instruction, and the first message comprises a preset identifier and an identifier of the first video networking tunnel; and the second terminal equipment initializes the second terminal equipment according to the initialization instruction. The method is used for avoiding the state machine abnormity caused by protocol message loss with small probability. And the data service forwarding cannot be recovered, and the state machine can be initialized and normal data forwarding can be continued when the state machine is in error through the detection of the forwarding of the tunnel message of the video networking.
Alternatively, in some embodiments of the present invention,
the second terminal equipment generates a second message, wherein the second message comprises the preset identifier and the identifier of the first video network tunnel;
and the second terminal equipment sends the second message to the first terminal equipment through the first video network tunnel, wherein the second message is used for the first terminal equipment to carry out connectivity detection on the first video network tunnel.
It should be noted that fig. 10 is a schematic flow chart applied to the embodiment of the present invention. The flow shown in fig. 10 may be applied to the embodiments shown in fig. 8 or fig. 9. Optionally, the embodiment shown in fig. 9 may be combined with the embodiment shown in fig. 8 to form a complete embodiment, which is not described herein again.
As shown in fig. 11, which is a schematic view of an embodiment of a first terminal device in the embodiment of the present invention, the first terminal device is applied to a video networking system, the video networking system includes the first terminal device and a second terminal device, the first terminal device and the second terminal device establish a connection through a first video networking tunnel, and the first terminal device may include:
a processing module 1101, configured to generate a first message, where the first message includes a preset identifier and an identifier of a first video network tunnel;
a sending module 1102, configured to send a first message to a second terminal device through a first video network tunnel, where the first message is used by the second terminal device to perform connectivity detection on the first video network tunnel.
Alternatively, in some embodiments of the present invention,
the processing module 1101 is specifically configured to, if the first terminal device does not receive a second message sent by the second terminal device within a preset duration, generate an initialization instruction by the first terminal device, where the second message includes a preset identifier and an identifier of the first video network tunnel; and initializing the first terminal equipment according to the initialization instruction.
As shown in fig. 12, which is a schematic view of an embodiment of a second terminal device in the embodiment of the present invention, the second terminal device is applied to a video networking system, the video networking system includes a first terminal device and a second terminal device, the first terminal device and the second terminal device establish a connection through a first video networking tunnel, and the second terminal device may include:
a processing module 1201, configured to generate an initialization instruction by a second terminal device if the second terminal device does not receive a first message sent by a first terminal device within a preset duration, where the first message includes a preset identifier and an identifier of a first video network tunnel; and initializing the first video network tunnel according to the initialization instruction.
Optionally, in some embodiments of the present invention, as shown in fig. 13, the second terminal device in the embodiments of the present invention is shown in another embodiment.
The processing module 1201 is further configured to generate a second message, where the second message includes a preset identifier and an identifier of the first video network tunnel;
the second terminal device may further include: the sending module 1202 is configured to send a message,
a sending module 1202, configured to send a second message to the first terminal device through the first video network tunnel, where the second message is used for the first terminal device to perform connectivity detection on the first video network tunnel.
Alternatively, in some embodiments of the present invention,
the processing module 1201 is specifically configured to set the state of the second terminal device to be initially powered on according to the initialization instruction, and switch the first video networking tunnel to be disconnected; and re-accessing the video network and establishing a second video network tunnel.
Optionally, in some embodiments of the present invention, the second terminal device may further include: the sending module 1202 is configured to send a message,
the sending module 1202 is configured to send the first message to the central processing unit for processing if the second terminal device receives the first message sent by the first terminal device within a preset time duration.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (5)
1. A method for detecting connectivity of a video network tunnel is applied to a video network system, the video network system comprises a first terminal device and a second terminal device, and the first terminal device and the second terminal device establish connection through the first video network tunnel, and the method comprises the following steps:
the first terminal equipment generates a first message, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel, the first message is a voice message, and the voice message is used as a detection message;
the first terminal device sends the first message to the second terminal device through the first video network tunnel, and the first message is used for the second terminal device to perform connectivity detection of the first video network tunnel;
if the first terminal device does not receive a second message sent by the second terminal device within a preset time length, the first terminal device generates an initialization instruction, wherein the second message comprises the preset identifier and an identifier of the first video network tunnel, the second message is a video service message, and the video service message is used as a data forwarding message;
the first terminal equipment initializes the first video network tunnel according to the initialization instruction, wherein when the first terminal equipment is a video modem, the second terminal equipment is a video modem, and when the first terminal equipment is a video modem, the second terminal equipment is a video modem.
2. A method for detecting connectivity of a video network tunnel is applied to a video network system, the video network system comprises a first terminal device and a second terminal device, and the first terminal device and the second terminal device establish connection through the first video network tunnel, and the method comprises the following steps:
if the second terminal device does not receive the first message sent by the first terminal device within the preset time length, the second terminal device generates an initialization instruction, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel, the first message is a voice message, and the voice message is used as a detection message;
the second terminal equipment initializes the first video network tunnel according to the initialization instruction;
the second terminal device initializes the first video networking tunnel according to the initialization instruction, and the initialization includes:
the second terminal device sets the state of the second terminal device as initial power-on according to the initialization instruction, and the first video network tunnel is switched to be disconnected;
the second terminal equipment is accessed into the video network again to establish a second video network tunnel;
the second terminal device generates a second message, wherein the second message comprises the preset identifier and the identifier of the first video network tunnel, the second message is a video service message, and the video service message is used as a data forwarding message;
and the second terminal equipment sends the second message to the first terminal equipment through the first video network tunnel, wherein the second message is used for the first terminal equipment to carry out connectivity detection on the first video network tunnel.
3. The method of claim 2, further comprising:
and if the second terminal equipment receives the first message sent by the first terminal equipment within the preset time length, the second terminal equipment sends the first message to a central processing unit for processing.
4. The utility model provides a first terminal equipment, its characterized in that, first terminal equipment is applied to the video networking system, the video networking system includes first terminal equipment and second terminal equipment, first terminal equipment with the second terminal equipment passes through the first video networking tunnel and establishes the connection, first terminal equipment includes:
the processing module is used for generating a first message, and the first message comprises a preset identifier and an identifier of the first video network tunnel;
a sending module, configured to send the first packet to the second terminal device through the first video network tunnel, where the first packet is used by the second terminal device to perform connectivity detection on the first video network tunnel, where the first packet is a voice packet, and the voice packet is used as a detection packet;
the processing module is specifically configured to, if the first terminal device does not receive a second message sent by the second terminal device within a preset duration, generate an initialization instruction by the first terminal device, where the second message includes the preset identifier and an identifier of the first video network tunnel; and initializing the first video networking tunnel according to the initialization instruction, wherein when the first terminal equipment is a video modem, the second terminal equipment is a video modem, when the first terminal equipment is the video modem, the second message is a video service message, and the video service message is used as a data forwarding message.
5. The utility model provides a second terminal equipment, its characterized in that, second terminal equipment is applied to the video networking system, the video networking system includes first terminal equipment and second terminal equipment, first terminal equipment with second terminal equipment passes through the first video networking tunnel and establishes the connection, second terminal equipment includes:
the processing module is used for generating an initialization instruction by the second terminal equipment if the second terminal equipment does not receive a first message sent by the first terminal equipment within a preset time length, wherein the first message comprises a preset identifier and an identifier of the first video network tunnel; initializing the first video network tunnel according to the initialization instruction, wherein a first message is a voice message which is used as a detection message;
the processing module is specifically configured to set a state of the second terminal device to be initially powered on according to the initialization instruction, and turn the first video network tunnel to be disconnected; re-accessing the video network and establishing a second video network tunnel;
the processing module is further used for generating a second message, and the second message comprises a preset identifier and an identifier of the first video network tunnel;
the second terminal device may further include: a sending module;
and the sending module is used for sending a second message to the first terminal equipment through the first video network tunnel, and the second message is used for the first terminal equipment to carry out connectivity detection on the first video network tunnel.
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| CN110690989A (en) * | 2019-09-02 | 2020-01-14 | 视联动力信息技术股份有限公司 | Service data transmission method, device and computer readable storage medium |
| CN110740087B (en) * | 2019-09-18 | 2021-01-08 | 视联动力信息技术股份有限公司 | Message transmission method, terminal, gateway device, electronic device and storage medium |
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