CN110545244A - message distribution method and device - Google Patents

message distribution method and device Download PDF

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Publication number
CN110545244A
CN110545244A CN201910741749.4A CN201910741749A CN110545244A CN 110545244 A CN110545244 A CN 110545244A CN 201910741749 A CN201910741749 A CN 201910741749A CN 110545244 A CN110545244 A CN 110545244A
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CN
China
Prior art keywords
mac address
tunnel
video
message
data
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CN201910741749.4A
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Chinese (zh)
Inventor
王俊峰
沈军
牛永会
王艳辉
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Visionvera Information Technology Co Ltd
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Visionvera Information Technology Co Ltd
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Priority to CN201910741749.4A priority Critical patent/CN110545244A/en
Publication of CN110545244A publication Critical patent/CN110545244A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • H04L12/4633Interconnection of networks using encapsulation techniques, e.g. tunneling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing data switching networks
    • H04L43/10Active monitoring, e.g. heartbeat, ping or trace-route
    • H04L43/106Active monitoring, e.g. heartbeat, ping or trace-route using time related information in packets, e.g. by adding timestamps
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/54Organization of routing tables
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00Indexing scheme associated with group H04L61/00
    • H04L2101/60Types of network addresses
    • H04L2101/618Details of network addresses
    • H04L2101/622Layer-2 addresses, e.g. medium access control [MAC] addresses

Abstract

The embodiment of the invention provides a method and a device for distributing messages, which are applied to a video networking data forwarding system, wherein the video networking data forwarding system comprises a source terminal, a target terminal and a video networking switch, and the method comprises the following steps: the video network switch receives a data message sent by the source terminal; the data message carries a destination MAC address; when the tunnel or the port associated with the destination MAC address cannot be searched in a preset learning table, the video networking switch learns the tunnel or the port associated with the destination MAC address; and the video network switch sends the data message to the target terminal through a tunnel or a port associated with the target MAC address. When the video network bears data forwarding service, the data forwarding table of the video network tunnel and the user terminal interface can be independently learned, and the diversification of the forwarding of the video network bearing interconnected data can be realized without depending on the internal functions of various video network data forwarding systems.

Description

message distribution method and device
Technical Field
the present invention relates to the field of video networking technologies, and in particular, to a method and an apparatus for message distribution.
background
the Vision networking adopts Vision Vera real-time high-definition video exchange technology, realizes the real-time transmission of the whole network high-definition video which can not be realized by the prior Internet, integrates dozens of services such as high-definition video conference, video monitoring, remote training, intelligent monitoring and analysis, emergency command, video telephone, live broadcast, television mail, information distribution and the like into a system platform, and realizes the real-time interconnection and intercommunication of high-definition quality video communication through various terminal devices.
At present, when the internet data service is carried by the video network, the data message forwarding between the tunnel and the access port needs to be carried out through a forwarding learning table in the system, and various system internal functions need to be relied on.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed to provide a method for message distribution and a corresponding apparatus for message distribution that overcome or at least partially solve the above problems.
in order to solve the above problems, an embodiment of the present invention discloses a method for distributing a packet, which is applied to a video networking data forwarding system, where the video networking data forwarding system includes a source terminal, a target terminal, and a video networking switch, and the method includes:
The video network switch receives a data message sent by the source terminal; the data message carries a destination MAC address;
when the tunnel or the port associated with the destination MAC address cannot be searched in a preset learning table, the video networking switch learns the tunnel or the port associated with the destination MAC address;
And the video network switch sends the data message to the target terminal through a tunnel or a port associated with the target MAC address.
Optionally, the data packet is a video networking packet or an ethernet packet, and when the data packet is a video networking packet, after the video networking switch receives the data packet sent by the source terminal, the method further includes:
And the video networking switch converts the video networking message into an Ethernet message.
Optionally, the learning, by the video networking switch, a tunnel or a port associated with the destination MAC address includes:
The video network switch sends data messages to all tunnels or ports except the port of the source terminal;
The video network switch receives a response message returned by the target terminal in response to the data message; wherein the response message carries a tunnel or a port;
and the video network switch establishes the incidence relation between the destination MAC address and the tunnel or the port in the response message.
optionally, the method further includes:
and the video network switch stores the established association relationship between the destination MAC address and the tunnel or the port into the preset learning table.
Optionally, when a tunnel is associated with the destination MAC address in the preset learning table, the video network switch sends the data packet to the target terminal through the tunnel or the port associated with the destination MAC address, including:
the video network switch packages the Ethernet message into a video network message;
And the video networking switch sends the video networking message to the target terminal through the tunnel associated with the target MAC address.
Optionally, when the preset learning table has a port associated with the destination MAC address, the video network switch sends the data packet to the target terminal through a tunnel or a port associated with the destination MAC address, including:
And the video network switch sends the Ethernet message to the target terminal through a port associated with the destination MAC address.
optionally, the data packet further carries a source MAC address, and after the video networking switch receives the data packet sent by the source terminal, the method further includes:
The video network switch determines a receiving tunnel by adopting a source MAC address of the data message;
And the video network switch establishes the incidence relation between the source MAC address and the receiving tunnel and stores the incidence relation into the preset learning table.
Optionally, the method further includes:
And the video network switch updates the timestamp of the incidence relation between the source MAC address and the receiving tunnel in the preset learning table and updates the timestamp of the incidence relation between the destination MAC address and the tunnel or the port.
the embodiment of the invention also discloses a message distribution device, which is applied to a video network data forwarding system, wherein the video network data forwarding system comprises a source terminal, a target terminal and a video network switch, and the device comprises:
the data message receiving module is used for receiving the data message sent by the source terminal by the video networking switch; the data message carries a destination MAC address;
the MAC address learning module is used for learning the tunnel or the port associated with the destination MAC address by the video network switch when the tunnel or the port associated with the destination MAC address cannot be found in a preset learning table;
And the data message sending module is used for sending the data message to the target terminal through the tunnel or the port associated with the target MAC address by the video network switch.
optionally, the data packet is a video networking packet or an ethernet packet, and when the data packet is a video networking packet, the apparatus further includes:
and the message conversion module is used for converting the video networking message into an Ethernet message by the video networking switch.
Optionally, the MAC address learning module includes:
A data message sending submodule, configured to send a data message to all tunnels or ports except for the port of the source terminal by the video networking switch;
A response message receiving submodule, configured to receive, by the video networking switch, a response message returned by the target terminal in response to the data message; wherein the response message carries a tunnel or a port;
And the destination MAC address association submodule is used for establishing the association relationship between the destination MAC address and the tunnel or the port in the response message by the video network switch.
Optionally, the apparatus further comprises:
And the first storage module is used for storing the association relationship between the destination MAC address and the tunnel or the port to be established by the video network switch into the preset learning table.
Optionally, when a tunnel is associated with the destination MAC address in the preset learning table, the data packet sending module includes:
a message encapsulation submodule, configured to encapsulate the ethernet message into a video networking message by the video networking switch;
And the first message sending submodule is used for sending the video networking message to the target terminal through the tunnel associated with the destination MAC address by the video networking switch.
Optionally, when the preset learning table has a port associated with the destination MAC address, the data packet sending module includes:
And the second message sending submodule is used for sending the Ethernet message to the target terminal through the port associated with the destination MAC address by the video network switch.
Optionally, the data packet further carries a source MAC address, and the apparatus includes:
a receiving tunnel determining module, configured to determine a receiving tunnel by using the source MAC address of the data packet through the video networking switch;
and the second storage module is used for establishing the incidence relation between the source MAC address and the receiving tunnel by the video networking switch and storing the incidence relation into the preset learning table.
optionally, the apparatus further comprises:
And the timestamp updating module is used for updating the timestamp of the incidence relation between the source MAC address and the receiving tunnel in the preset learning table and updating the timestamp of the incidence relation between the destination MAC address and the tunnel or the port in the preset learning table by the video networking switch.
the embodiment of the invention also discloses an electronic device, which comprises:
One or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the electronic device to perform one or more of the method steps as described in embodiments of the invention.
the embodiment of the invention also discloses a computer readable storage medium, which stores a computer program for enabling a processor to execute the steps of the method according to the embodiment of the invention.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, a data message sent by a source terminal is received through a video networking switch; the data message carries a destination MAC address; when the tunnel or the port associated with the destination MAC address cannot be searched in the preset learning table, the video network switch learns the tunnel or the port associated with the destination MAC address; and sending the data message to the target terminal through the tunnel or the port associated with the destination MAC address. When the video network bears data forwarding service, the data forwarding table of the video network tunnel and the user terminal interface can be independently learned, and the diversification of the forwarding of the video network bearing interconnected data can be realized without depending on the internal functions of various video network data forwarding systems.
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 flowchart illustrating steps of a method for message distribution according to an embodiment of the present invention;
Fig. 6 is a network topology diagram of a data forwarding system according to an embodiment of the present invention;
FIG. 7 is a modular functional block diagram of a data forwarding system of an embodiment of the present invention;
Fig. 8 is a block diagram of a message distribution apparatus according to an embodiment of 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 the traditional Ethernet (Ethernet) to face the potentially huge first 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: server, exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, code board, memory, 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 server, access exchanger (including Ethernet protocol conversion gateway), terminal (including various set-top boxes, coding board, memory, 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 an associated 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 incoming data packet of the CPU module 304 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 a packet entering the switching engine module 303 is destined for an upstream network interface from a downstream network interface, the packet is stored in a queue of the associated packet buffer 307 in association with a 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 downstream network interface to the upstream network interface, the packet is stored in the queue of the associated packet buffer 307 according to the packet steering information; if the queue of the packet buffer 307 is nearly full, it is discarded.
The switching engine module 303 polls all packet buffer queues and may include 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 308 is configured by the CPU module 304, 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 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, acquires the ethernet MAC DA of the associated terminal according to the 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.
referring to fig. 5, a flowchart illustrating steps of an embodiment of a method for message distribution according to an embodiment of the present invention is shown, and is applied to a video networking data forwarding system, where the video networking data forwarding system includes a source terminal, a target terminal, and a video networking switch.
The source terminal can be a video network terminal or an internet terminal, and is used for sending data messages to the target terminal. The video network terminal is a video network service landing device, an actual participant or a server of the video network service, and can be various conference set-top boxes, video telephone set-top boxes, operation teaching set-top boxes, streaming media gateways, storage gateways, media synthesizers and the like. The internet terminal is a terminal device in the ethernet, which uses an ethernet protocol for communication, and includes a PC (Personal Computer), a mobile terminal, and the like, and various applications, for example, applications running video networking services, can be run on the terminal device.
The target terminal can also be a video networking terminal or an internet terminal, and the target terminal is used for receiving the data message sent by the source terminal.
The video network switch is used for forwarding data messages transmitted between the source terminal and the target terminal, and is deployed in the video network.
the message distribution method may specifically include the following steps:
step 501, the video networking switch receives a data message sent by the source terminal; the data message carries a destination MAC address;
The MAC (Media Access Control Address) Address, which may also be referred to as a physical Address or a hardware Address, is used to define the location of the terminal device in the network. In the physical transmission process of the network bottom layer, data transmission identifies a host through a MAC address, and the host must be unique globally.
The destination MAC address may be the MAC address of the target terminal. The data packet sent by the source terminal to the target terminal needs to carry the destination MAC address.
in the embodiment of the present invention, when the source terminal sends the data packet to the target terminal, the source terminal may first send the data packet to the video networking switch, and the video networking switch receives the data packet and forwards the data packet to the target terminal.
step 502, when the tunnel or port associated with the destination MAC address cannot be found in a preset learning table, the switch of the internet of view learns the tunnel or port associated with the destination MAC address;
The tunnel may be a communication channel in the video network, for example, when the video telephone service is performed, after the video telephone is established by two virtual terminals through the video network signaling message, one expression form of the video telephone inside the video network is the tunnel.
the Port can be considered as an outlet for communication between the terminal device and the outside world, and is an expression form of a network Port accessed by the terminal device in an ethernet system.
The preset learning table may be a MAC address learning table preset by the video networking switch, and the association relationship between the MAC address and the tunnel or the port is stored in the preset learning table.
As an example, the preset learning table may be as shown in table 1 below:
MAC address Tunnel port(s)
Mac:A tunnel 1 Port20
Mac:B tunnel 2 Port21
TABLE 1
in the embodiment of the invention, after the video network switch receives the data message sent by the source terminal, whether a tunnel or a port associated with the destination MAC address exists can be searched in the preset learning table.
when the tunnel or the port associated with the destination MAC address is found in the preset learning table, the switch of the video network may directly send the data packet to the target terminal through the found tunnel or port associated with the destination MAC address.
When the tunnel or port associated with the destination MAC address cannot be found in the preset learning table, the video networking switch can autonomously learn the tunnel or port associated with the destination MAC address.
specifically, the video network switch may send a data packet to a tunnel or a port other than the port of the source terminal, and when the destination terminal receives the data packet, the video network switch returns a response message to the video network switch, and the video network switch may determine the tunnel or the port associated with the destination MAC address according to the response message. And when other terminal equipment which is not the target terminal receives the data message, not responding to the received data message.
It should be noted that, when the data packet sent by the source terminal is a broadcast packet or a multicast packet, the tunnel or the port associated with the destination MAC address does not need to be searched in the preset learning table, and the data packet is directly sent to other tunnels or ports except the port of the source terminal.
Step 503, the video network switch sends the data packet to the target terminal through the tunnel or port associated with the destination MAC address.
In the embodiment of the invention, after the video networking switch autonomously learns the tunnel or the port associated with the destination MAC address, the data message can be sent to the target terminal through the tunnel or the port associated with the destination MAC address.
When the video network switch needs to send the data message sent by the source terminal to the target terminal, the data message is sent to the target terminal through the tunnel or the port which is automatically learned and is associated with the target MAC address, and the forwarding learning table in the video network data forwarding system is not needed, so that dependence on various system internal functions is avoided, and the data forwarding efficiency is improved.
In a preferred embodiment of the present invention, the data packet is a video network packet or an ethernet packet.
The video networking message can be a message in a video networking protocol format, the video networking message can be transmitted in the video networking, and the data sent by the video networking terminal is the video networking message. The ethernet packet may be a packet in an ethernet protocol format, the ethernet packet may be transmitted in an ethernet, and the data sent by the internet terminal is the ethernet packet.
when the data packet is a video networking packet, after step 501, the method may further include the following steps:
And the video networking switch converts the video networking message into an Ethernet message.
in the embodiment of the present invention, when the data packet is a video networking packet, the video networking switch may convert the video networking packet into an ethernet packet after receiving the data packet sent by the original terminal.
Specifically, the format of the video networking message may be: the video network packet header + the Ethernet frame, the video network switch can analyze the video network message and remove the video network packet header in the video network message to obtain the Ethernet message.
in a preferred embodiment of the present invention, the step 502 may include the following sub-steps:
The video network switch sends data messages to all tunnels or ports except the port of the source terminal; the video network switch receives a response message returned by the target terminal in response to the data message; wherein the response message carries a tunnel or a port; and the video network switch establishes the incidence relation between the destination MAC address and the tunnel or the port in the response message.
In a specific implementation, the video networking switch sends a data message to all tunnels or ports except for a port of a source terminal, and the data message carries a destination MAC address. And after receiving the data message, the target terminal extracts the target MAC address in the data message, compares the target MAC address with the local MAC address, and returns a response message to the video network switch when the target MAC address is the same as the local MAC address. And other terminal equipment compares the target MAC address with the local MAC address, and if the target MAC address is different from the local MAC address, no response message is returned to the video network switch. After receiving the response message returned by the target terminal, the video network switch establishes the association relationship between the destination MAC address and the tunnel or the port in the response message.
In a preferred embodiment of the present invention, step 502 may further include the following sub-steps:
And the video network switch stores the established association relationship between the destination MAC address and the tunnel or the port into the preset learning table.
in the embodiment of the invention, the video network switch can store the established association relationship between the destination MAC address and the tunnel or the port into the preset learning table, so that when the data message is sent subsequently, the preset learning table is directly searched to obtain the tunnel or the port associated with the destination MAC address, and then the data message is sent to the target terminal through the tunnel or the port associated with the destination MAC address, thereby improving the efficiency of sending the data message.
In a preferred embodiment of the present invention, when the preset learning table has an association relationship with the destination MAC address and is a tunnel, the step 503 may include the following sub-steps:
The video network switch packages the Ethernet message into a video network message; and the video networking switch sends the video networking message to the target terminal through the tunnel associated with the target MAC address.
in the embodiment of the invention, when the tunnel associated with the destination MAC address in the preset learning table is required to be sent, the packet in the protocol format of the video network is required to be sent, and the video network switch can package the ethernet packet into the video network packet and then send the video network packet to the target terminal through the tunnel associated with the destination MAC address. In a preferred embodiment of the present invention, when the preset learning table has a port associated with the destination MAC address, the step 503 may include the following sub-steps:
and the video network switch sends the Ethernet message to the target terminal through a port associated with the destination MAC address.
When the port in the preset learning table, which has an association relation with the destination MAC address, needs to send a message in an ethernet protocol format, the ethernet message can be sent without encapsulating the ethernet message. Specifically, the video networking switch may send the ethernet packet to the destination terminal through a port associated with the destination MAC address.
In a preferred embodiment of the present invention, the data packet further carries a source MAC address, and after step 501, the method further includes the following steps:
the video network switch determines a receiving tunnel by adopting a source MAC address of the data message; and the video network switch establishes the incidence relation between the source MAC address and the receiving tunnel and stores the incidence relation into the preset learning table.
Wherein the source MAC address is the MAC address of the source terminal.
in the embodiment of the invention, the video network switch can determine the receiving tunnel by adopting the source MAC address carried in the data message, establish the incidence relation between the source MAC address and the receiving tunnel, and store the incidence relation between the source MAC address and the receiving tunnel into the preset learning table.
in a preferred embodiment of the present invention, the method further includes:
And the video network switch updates the timestamp of the incidence relation between the source MAC address and the receiving tunnel in the preset learning table and updates the timestamp of the incidence relation between the destination MAC address and the tunnel or the port.
In the embodiment of the invention, the video network switch can update the time stamp of the association relationship between the source MAC address and the receiving tunnel in the preset learning table, and update the time stamp of the association relationship between the destination MAC address and the tunnel or the port.
setting a life cycle for the stored association relationship between the MAC address and the tunnel or the port in a preset learning table, and deleting the recorded association relationship between the MAC address and the tunnel or the port when the life cycle is exceeded. And updating the timestamp of the association relation between the MAC address and the tunnel or the port stored in the preset learning table, refreshing the life cycle and restarting timing.
As shown in fig. 6, which is a network topology diagram of a data forwarding system according to an embodiment of the present invention, in fig. 6, the data forwarding system includes 3 PCs (PC1, PC2, and PC3, respectively), and 4 video networking switches (video networking switch 1, video networking switch 2, video networking switch 3, and video networking switch 4, respectively). The video network switch can access the network through the video network signaling message, establishes a tunnel with other video network switches, and associates the tunnel with the downlink port. When the PC is to transmit data, the data is forwarded through the video networking switch.
As an example, when the pc1 initiates sending a data packet to the pc2, the video networking interface of the video networking switch 1 receives the data packet, performs table learning of the source MAC address of the data packet (MAC address of the pc 1) and associates the received tunnel, finds whether the preset learning table has an association relationship between the destination MAC address and the tunnel or the port, and when the association relationship between the destination MAC address and the tunnel or the port is not found or the video networking packet is a broadcast or multicast packet, performs MAC address learning on other ports or tunnels other than the port of the source terminal, that is, sends the data packet to the uplink tunnel 1 and tunnel 2 associated with the port of the video networking switch 1. And when the tunnel of the video network switch 2 receives the message, learning a message two-layer source MAC table and associating the message two-layer source MAC table with the tunnel. And searching whether the incidence relation between the destination MAC address and the tunnel or the port exists in a preset learning table, and when the incidence relation between the destination MAC address and the tunnel or the port is not searched, or the video networking message is a broadcast or multicast message, respectively sending a data message to a downlink port (namely, a port connected with pc 2) associated with the port of the video networking switch 1. When the pc2 receives the data message, the response is made to the pc1, and the data message is sent from the pc2 to the pc 1. The above-described processes 1 to 3 are repeated. When the pc1 receives the response message of the pc2, the MAC address learning table of the data interaction between the pc1 and the pc2 is established.
it should be noted that: the first packet from pc1 to pc2 corresponds to the destination MAC address learning table (learned by the source address MAC (MAC of pc 1)) of the packet from pc2 to pc 1. Then the first data packet from pc2 to pc1 actually establishes the destination MAC learning table from pc1 to pc2 (which is learned by the source address MAC (MAC of pc 2)).
Fig. 7 shows a modular functional block diagram of a data forwarding system according to an embodiment of the present invention, and in fig. 7, the data forwarding system includes two modules, namely, an initialization module and a configuration module. It should be noted that a container is an entity for modular data storage and management, and an example is a representation of a member of storage and management data. The autonomous learning of the MAC address in the data forwarding system can be realized by initializing and configuring the down-sending two modules. The functions of the initialization and configuration issuing two modules are respectively as follows:
Initialization module
and generating a forwarding instance container, and after the forwarding instance is created, putting the forwarding instance into the forwarding instance container.
And generating a tunnel container, and putting the tunnel into the same tunnel container when the tunnel is created so as to be convenient for maintaining the tunnel.
Configuration issuing module
Creating a tunnel: and creating a tunnel through the mac address of the virtual terminal, the local sub-device number, the server sub-number and the associated video network interface, and adding the tunnel into a tunnel container.
creating a forwarding instance: creating a forwarding instance and adding the forwarding instance into a forwarding instance container.
A port management instance is created for managing ports or tunnels under the forwarding instance.
And creating a learning table example for managing the learned MAC address and port (namely terminal interface in the figure) or the learning table of the tunnel (namely the association relation between the MAC address and the port or the tunnel).
and creating a timer, traversing the learning table in the learning table example every five minutes, and deleting a member when the time stamp of the member is not updated in five minutes.
And configuring port association, namely adding a port or a tunnel which needs to be added into the same forwarding instance into a port management instance.
The process of data forwarding service processing is as follows:
when the data message is a video networking message:
1. And after the video networking message is received by the video networking interface, determining a receiving tunnel according to the source MAC address of the video networking message, analyzing the video networking message, and converting the video networking message into an Ethernet message.
2. And if the preset learning table already has the association relationship between the source MAC address and the receiving tunnel, updating a timestamp of the association relationship between the source MAC address and the receiving tunnel in the preset learning table.
3. and searching whether the association relation between the destination MAC address and the tunnel or the port exists in a preset learning table, and searching other ports or tunnels except the port of the source terminal for MAC address learning in a port management instance under a corresponding forwarding instance when the association relation between the destination MAC address and the tunnel or the port is not searched or the video networking message is a broadcast or multicast message. When the incidence relation between the destination MAC address and the tunnel or the port is found, the data is directly transmitted through the port or the tunnel in the preset learning table. If the tunnel is associated with the destination MAC address, the Ethernet message is packaged into a video network message, and then the video network message is sent through the tunnel associated with the destination MAC address; if a port is associated with the destination MAC address, an ethernet packet is sent directly through the port.
when the data message is an Ethernet message:
1. Determining a receiving tunnel according to a source MAC address of the Ethernet message, establishing an association relationship between the source MAC address and the receiving tunnel, storing the association relationship between the source MAC address and the receiving tunnel into a preset learning table, and updating a timestamp of the association relationship between the source MAC address and the receiving tunnel in the preset learning table if the association relationship between the source MAC address and the receiving tunnel exists in the preset learning table.
2. And searching whether the association relation between the destination MAC address and the tunnel or the port exists in a preset learning table, and searching other ports or tunnels except the port of the source terminal for MAC address learning in a port management instance under a corresponding forwarding instance when the association relation between the destination MAC address and the tunnel or the port is not searched or the video networking message is a broadcast or multicast message. When the incidence relation between the destination MAC address and the tunnel or the port is found, the data is directly transmitted through the port or the tunnel in the preset learning table. If the tunnel is associated with the destination MAC address, the Ethernet message is packaged into a video network message, and then the video network message is sent through the tunnel associated with the destination MAC address; if a port is associated with the destination MAC address, an ethernet packet is sent directly through the port.
in the embodiment of the invention, a data message sent by a source terminal is received through a video networking switch; the data message carries a destination MAC address; when the tunnel or the port associated with the destination MAC address cannot be searched in the preset learning table, the video network switch learns the tunnel or the port associated with the destination MAC address; and sending the data message to the target terminal through the tunnel or the port associated with the destination MAC address. When the video network bears data forwarding service, the data forwarding table of the video network tunnel and the user terminal interface can be independently learned, and the diversification of the forwarding of the video network bearing interconnected data can be realized without depending on the internal functions of various video network data forwarding systems.
it should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
referring to fig. 8, a block diagram of a message distribution apparatus according to an embodiment of the present invention is shown, and is applied to a video networking data forwarding system, where the video networking data forwarding system includes a source terminal, a target terminal, and a video networking switch, and the apparatus may include the following modules:
A data message receiving module 801, configured to receive, by the video networking switch, a data message sent by the source terminal; the data message carries a destination MAC address;
A MAC address learning module 802, configured to learn, when a tunnel or a port associated with the destination MAC address is not found in a preset learning table, the tunnel or the port associated with the destination MAC address by the video networking switch;
A data packet sending module 803, configured to send the data packet to the target terminal through a tunnel or a port associated with the destination MAC address by the video networking switch.
in a preferred embodiment of the present invention, the data packet is a video networking packet or an ethernet packet, and when the data packet is a video networking packet, the apparatus may further include the following modules:
and the message conversion module is used for converting the video networking message into an Ethernet message by the video networking switch.
In a preferred embodiment of the present invention, the MAC address learning module 802 may include the following sub-modules:
A data message sending submodule, configured to send a data message to all tunnels or ports except for the port of the source terminal by the video networking switch;
a response message receiving submodule, configured to receive, by the video networking switch, a response message returned by the target terminal in response to the data message; wherein the response message carries a tunnel or a port;
And the destination MAC address association submodule is used for establishing the association relationship between the destination MAC address and the tunnel or the port in the response message by the video network switch.
in a preferred embodiment of the present invention, the apparatus may further include the following modules:
And the first storage module is used for storing the association relationship between the destination MAC address and the tunnel or the port to be established by the video network switch into the preset learning table.
In a preferred embodiment of the present invention, when the preset learning table has an association relationship with the destination MAC address and is a tunnel, the data packet sending module 803 may include the following sub-modules:
A message encapsulation submodule, configured to encapsulate the ethernet message into a video networking message by the video networking switch;
And the first message sending submodule is used for sending the video networking message to the target terminal through the tunnel associated with the destination MAC address by the video networking switch.
in a preferred embodiment of the present invention, when the preset learning table has an association relationship with the destination MAC address, the data packet sending module 803 may include the following sub-modules:
And the second message sending submodule is used for sending the Ethernet message to the target terminal through the port associated with the destination MAC address by the video network switch.
In a preferred embodiment of the present invention, the data packet further carries a source MAC address, and the apparatus may further include the following modules:
A receiving tunnel determining module, configured to determine a receiving tunnel by using the source MAC address of the data packet through the video networking switch;
and the second storage module is used for establishing the incidence relation between the source MAC address and the receiving tunnel by the video networking switch and storing the incidence relation into the preset learning table.
In a preferred embodiment of the present invention, the apparatus may further include the following modules:
And the timestamp updating module is used for updating the timestamp of the incidence relation between the source MAC address and the receiving tunnel in the preset learning table and updating the timestamp of the incidence relation between the destination MAC address and the tunnel or the port in the preset learning table by the video networking switch.
for the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
An embodiment of the present invention further provides an electronic device, including:
One or more processors; and
one or more machine-readable media having instructions stored thereon, which when executed by the one or more processors, cause the electronic device to perform one or more of the method steps as described in embodiments of the invention.
embodiments of the present invention also provide a computer-readable storage medium storing a computer program for causing a processor to execute the steps of the method according to the embodiments of the present invention.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
as will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
while preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The above detailed description is provided for a method and a device for message distribution, and a specific example is applied in this document to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (11)

1. A message distribution method is applied to a video networking data forwarding system, wherein the video networking data forwarding system comprises a source terminal, a target terminal and a video networking switch, and the method comprises the following steps:
The video network switch receives a data message sent by the source terminal; the data message carries a destination MAC address;
when the tunnel or the port associated with the destination MAC address cannot be searched in a preset learning table, the video networking switch learns the tunnel or the port associated with the destination MAC address;
and the video network switch sends the data message to the target terminal through a tunnel or a port associated with the target MAC address.
2. the method according to claim 1, wherein the data packet is a video networking packet or an ethernet packet, and when the data packet is a video networking packet, after the video networking switch receives the data packet sent by the source terminal, the method further comprises:
And the video networking switch converts the video networking message into an Ethernet message.
3. The method of claim 2, wherein the video networking switch learns a tunnel or port associated with the destination MAC address, comprising:
The video network switch sends data messages to all tunnels or ports except the port of the source terminal;
The video network switch receives a response message returned by the target terminal in response to the data message; wherein the response message carries a tunnel or a port;
and the video network switch establishes the incidence relation between the destination MAC address and the tunnel or the port in the response message.
4. the method of claim 3, further comprising:
and the video network switch stores the established association relationship between the destination MAC address and the tunnel or the port into the preset learning table.
5. The method according to claim 4, wherein when the preset learning table has an association relationship with the destination MAC address and is a tunnel, the video networking switch sends the data packet to the target terminal through the tunnel or the port associated with the destination MAC address, including:
The video network switch packages the Ethernet message into a video network message;
and the video networking switch sends the video networking message to the target terminal through the tunnel associated with the target MAC address.
6. The method according to claim 4, wherein when the port associated with the destination MAC address in the preset learning table is a port, the sending, by the video networking switch, the data packet to the target terminal through the tunnel or the port associated with the destination MAC address includes:
And the video network switch sends the Ethernet message to the target terminal through a port associated with the destination MAC address.
7. the method according to claim 1, wherein the data packet further carries a source MAC address, and after the video networking switch receives the data packet sent by the source terminal, the method further comprises:
The video network switch determines a receiving tunnel by adopting a source MAC address of the data message;
And the video network switch establishes the incidence relation between the source MAC address and the receiving tunnel and stores the incidence relation into the preset learning table.
8. The method of claim 4 or 7, further comprising:
And the video network switch updates the timestamp of the incidence relation between the source MAC address and the receiving tunnel in the preset learning table and updates the timestamp of the incidence relation between the destination MAC address and the tunnel or the port.
9. a message distribution device is applied to a video networking data forwarding system, wherein the video networking data forwarding system comprises a source terminal, a target terminal and a video networking switch, and the message distribution device comprises:
The data message receiving module is used for receiving the data message sent by the source terminal by the video networking switch; the data message carries a destination MAC address;
The MAC address learning module is used for learning the tunnel or the port associated with the destination MAC address by the video network switch when the tunnel or the port associated with the destination MAC address cannot be found in a preset learning table;
And the data message sending module is used for sending the data message to the target terminal through the tunnel or the port associated with the target MAC address by the video network switch.
10. An electronic device, comprising:
one or more processors; and
One or more machine readable media having instructions stored thereon, which when executed by the one or more processors, cause the electronic device to perform the steps of the method of one or more of claims 1-8.
11. A computer-readable storage medium, characterized in that it stores a computer program for causing a processor to perform the steps of the method according to any one of claims 1 to 8.
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