CN115378861A - Message transmission method and device, communication system - Google Patents

Abstract

The application discloses a message transmission method, message transmission equipment and a communication system, and belongs to the technical field of communication. The method comprises the following steps: after obtaining a network layer reachability information NLRI message, a first node determines part of BGP connections in a plurality of BGP connections established between the first node and a second node; and then, the first node sends the NLRI message to the second node through the part of BGP connection. The method and the device can reduce the repetition rate of NLRI message transmission between nodes, reduce the pressure of receiving and transmitting the NLRI message by the nodes, reduce the load of a BGP system, and improve the network topology switching efficiency.

Description

Message transmission method and device, communication system

technical field

The present application relates to the technical field of communication, and in particular to a message transmission method and equipment, and a communication system.

Background technique

A Border Gateway Protocol (Border Gateway Protocol, BGP) system is a widely used communication system. The BGP system includes multiple nodes, and these nodes can communicate based on BGP.

BGP connections can be established between nodes in the BGP system, and, for two nodes with established BGP connections, one or more BGP connections can be established between these two nodes. The two nodes may advertise network layer reachability information (network layer reachability information, NLRI) messages to each other based on the established BGP connection. For example, for each node in the BGP system, the node may query each locally established BGP connection, and send the NLRI message to the peer node of the BGP connection through each BGP connection.

However, the load of the BGP system is relatively high at present, which affects the normal operation of the BGP system.

Contents of the invention

The application provides a message transmission method, equipment, and communication system, which can solve the problem that the current BGP system has a high load and affects the normal operation of the BGP system. The technical solution is as follows:

In a first aspect, a message transmission method is provided, the method comprising: after the first node obtains the NLRI message, determining a part of the BGP connection among multiple BGP connections established between the first node and the second node; Afterwards, the first node sends the NLRI message to the second node through the part of the BGP connection.

After obtaining the NLRI message, the first node may forward the NLRI message to other nodes. When the first node is forwarding the NLRI message to the second node, the first node can filter some BGP connections among multiple BGP connections between the first node and the second node, as a means of forwarding the NLRI message to the second node aisle.

In the message transmission method provided by the present application, when multiple BGP connections are established between the first node and the second node, the first node only sends NLRI messages to the second node through some of the BGP connections. In this way, the repetition rate of NLRI message transmission between nodes is reduced, the pressure on nodes to send and receive NLRI messages is reduced, the load of the BGP system is reduced, and the network topology switching efficiency is improved.

The first node and the second node may be any two nodes in the BGP system, and multiple BGP connections are established between the first node and the second node. A BGP system may also be referred to as a BGP network. The BGP network may be implemented in multiple manners, for example, a data center network (data center network, DCN), a campus network, a software-defined wide area network (Software Defined-Wide Area Network, SD-WAN), etc. Nodes in the BGP system can establish BGP connections, and the nodes establishing BGP connections are BGP neighbors or BGP peers (PEERs). The BGP connection has corresponding links (one or more), and the message transmitted on the BGP connection will be transmitted on the link corresponding to the BGP connection.

Optionally, when the part of the BGP connections determined by the first node includes at least two BGP connections (such as two BGP connections), when some BGP connections in the part of the BGP connections fail, the part of the BGP connections also has Other BGP connections other than some BGP connections can work normally, ensuring that the NLRI message can be effectively transmitted to the second node. Moreover, since the number of at least two BGP connections is less than the number of the above multiple BGP connections, the repeated transmission rate of the NLRI message is also low.

Optionally, when some BGP connections include one BGP connection, the first node does not need to copy the NLRI message, but directly sends the NLRI message obtained in S101 to the second node through the one BGP connection. In this case, the repeated transmission rate of the NLRI message is low.

Optionally, the first node may filter some BGP connections among multiple BGP connections according to any one of the following three manners.

In the first manner, some BGP connections include: at least one BGP connection with higher bandwidth among the multiple BGP connections. The first node may determine the bandwidth of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with higher bandwidth as the above-mentioned partial BGP connections. In this way, NLRI packets can be guaranteed to be transmitted on the higher-bandwidth BGP connection, and the transmission rate of NLRI packets can be increased.

In the second manner, the partial BGP connections include: at least one BGP connection with higher message transmission quality among multiple BGP connections; the first node can determine the message transmission quality of each BGP connection among the multiple BGP connections, One or at least two BGP connections with higher packet transmission quality are used as the above-mentioned partial BGP connections. In this way, it can be ensured that the NLRI message is transmitted on the BGP connection with higher message transmission quality, and the transmission quality of the NLRI message can be improved.

In the third manner, the partial BGP connections include: at least one BGP connection with a smaller address among the multiple BGP connections. The first node may determine the address of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with smaller addresses as the above-mentioned partial BGP connections.

In the above content, it is taken as an example that the first node determines a part of the BGP connection according to any one of the three parameters of BGP connection bandwidth, packet transmission quality and address. Optionally, the first node may also determine a part of the BGP connection according to other parameters, and the first node may also determine a part of the BGP connection in combination with multiple parameters, which is not limited in this embodiment of the present application.

Optionally, the first node may generate the NLRI message by itself to obtain the NLRI message. Or, the first node may receive the NLRI message sent by other nodes (different from the second node), so as to obtain the NLRI message.

Optionally, the first node and the second node belong to the same or different autonomous systems (autonomous system, AS).

In a second aspect, a packet transmission device is provided, the packet transmission device belongs to a first node, and multiple BGP connections are established between the first node and the second node, and the packet transmission device includes: an obtaining module , determine the module and send the module. Wherein, the obtaining module is used to obtain the NLRI message; the determining module is used to determine part of the BGP connections in the multiple BGP connections; the sending module is used to send the part of the BGP connection to the second node. NLRI message.

When multiple BGP connections are established between the first node and the second node, the message transmission device provided in the present application only sends NLRI messages to the second node through some of the BGP connections. In this way, the repetition rate of NLRI message transmission between nodes is reduced, the pressure on nodes to send and receive NLRI messages is reduced, the load of the BGP system is reduced, and the network topology switching efficiency is improved.

The part of BGP connections determined by the first node includes one or at least two BGP connections.

When some BGP connections include one BGP connection, the first node does not need to copy the NLRI message, but directly sends the NLRI message obtained in S101 to the second node through the one BGP connection. In this case, the repeated transmission rate of the NLRI message is low.

When the part of the BGP connection determined by the first node includes at least two BGP connections (such as two BGP connections), when some BGP connections in the part of the BGP connection fail, the part of the BGP connection also has some BGP connections other than the BGP connection. Other BGP connections other than can work normally, ensuring that the NLRI message can be effectively transmitted to the second node. Moreover, since the number of at least two BGP connections is less than the number of the above multiple BGP connections, the repeated transmission rate of the NLRI message is also low.

Optionally, the packet transmission device may filter some BGP connections among multiple BGP connections according to any one of the following three manners.

In the first manner, some BGP connections include: at least one BGP connection with higher bandwidth among the multiple BGP connections. The packet transmission device may determine the bandwidth of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with higher bandwidth as the above-mentioned partial BGP connections. In this way, NLRI packets can be guaranteed to be transmitted on the higher-bandwidth BGP connection, and the transmission rate of NLRI packets can be increased.

In the second method, some BGP connections include: at least one BGP connection with higher packet transmission quality among multiple BGP connections; the packet transmission device can determine the packet transmission quality of each BGP connection among the multiple BGP connections , and use one or at least two BGP connections with higher packet transmission quality as the above-mentioned partial BGP connections. In this way, it can be ensured that the NLRI message is transmitted on the BGP connection with higher message transmission quality, and the transmission quality of the NLRI message can be improved.

In the third manner, the partial BGP connections include: at least one BGP connection with a smaller address among the multiple BGP connections. The packet transmission device may determine the address of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with smaller addresses as the above-mentioned partial BGP connections.

Optionally, the obtaining module is configured to: generate or receive the NLRI message.

Optionally, the first node and the second node belong to the same AS. Certainly, the first node and the second node may also belong to different ASs, which is not limited in this embodiment of the present application.

In a third aspect, a communication device is provided, and the communication device includes: a processor and a memory, and a program is stored in the memory; the processor is used to call the program stored in the memory, so that the communication device Perform any one of the message transmission methods described in the design of the first aspect.

In a fourth aspect, a communication system is provided, and the communication system includes: a first node and a second node, a plurality of BGP connections are established between the first node and the second node, and the first node It includes the message transmission device described in any design of the second aspect.

In a fifth aspect, a computer storage medium is provided, wherein a computer program is stored in the computer storage medium; when the computer program runs on a computer, the computer executes the message transmission described in any one of the designs in the first aspect method.

In a sixth aspect, a computer program product containing instructions is provided, and when the computer program product is run on a message transmission device, the message transmission device is made to execute the message transmission method described in any design of the first aspect.

For the technical effect brought by any one of the design methods in the second aspect to the sixth aspect, please refer to the technical effect brought by the corresponding design method in the first aspect, which will not be repeated here.

Description of drawings

FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 3 is a flow chart of a message transmission method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a partial BGP connection provided by an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a packet transmission device provided by an embodiment of the present application.

Detailed ways

In order to make the principles and technical solutions of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

The BGP system is a communication system using BGP as an underlay protocol, wherein the underlay protocol is used for network intercommunication between devices to support upper layer service forwarding.

A BGP system may also be referred to as a BGP network. The BGP network may be implemented in multiple manners, for example, a data center network (data center network, DCN), a campus network, a software-defined wide area network (Software Defined-Wide Area Network, SD-WAN), and the like.

The BGP system includes multiple nodes, and these nodes can communicate based on BGP.

Exemplarily, FIG. 1 is a schematic structural diagram of a BGP system provided by an embodiment of the present application. As shown in FIG. 1 , the BGP system includes: nodes 1, 2, 3, 4, 5, 6, 7 and 8. It should be noted that the number of nodes in the BGP system can be any value, and only three nodes are schematically shown in FIG. 1 . Multiple nodes in a BGP system can belong to the same or different ASs.

A node can be a device, or a part of a device (such as an interface unit of a device). The device may be an Internet Protocol (Internet Protocol, IP) device, such as a gateway, a router, a switch, a server or a server cluster, and the like. The node supports basic layer 2 and layer 3 forwarding capabilities, and supports the BGP protocol.

For example, node 2 in FIG. 1 is a core layer device, nodes 3 and 4 are aggregation layer devices, and nodes 5, 6, 7 and 8 are access layer devices. For example, node 1 is the egress router of the campus network, node 2 is the core layer switch of the campus network, nodes 3 and 4 are aggregation layer switches, nodes 5 and 8 are wired access layer switches, and nodes 6 and 7 are wireless Access layer switches.

A node can be regarded as a communication device, and the communication device may include: a processor; the processor is used to couple with the memory, and after reading the instructions in the memory, execute the method performed by the communication device as described in the embodiment of the present application according to the instructions.

In the communication device, there may be multiple processors, and the memory coupled to the processor may be independent of the processor or the communication device, or within the processor or the network device. The storage can be a physically independent unit, or it can be a storage space on a cloud server or a network hard disk. Optionally, there may be one or more memories. When there are multiple memories, they can be located at the same or different locations, and can be used independently or in conjunction.

For example, when the memory is located inside the communication device, please refer to FIG. 2 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The communication device 200 includes: a processor 202 and a memory 201, wherein the memory 201 is used to store a program, and the processor 202 is used to call the program stored in the memory 201, so that the communication device executes a corresponding method or function.

Optionally, as shown in FIG. 2 , the communication device 200 may further include at least one communication interface 203 and at least one communication bus 204 , and the interface (such as the communication interface 203 ) in this embodiment of the application is also called a port. The memory 201 , the processor 202 and the communication interface 203 are communicatively connected through a communication bus 204 . Wherein, the communication interface 203 is used for communicating with other devices under the control of the processor 202 , and the processor 202 can call the program stored in the memory 201 through the communication bus 204 .

The communication device provided in the embodiment of the present application may be used to perform operations performed by the first node in the packet transmission method provided in the subsequent embodiments of the present application.

Nodes in the BGP system can establish BGP connections, and the nodes establishing BGP connections are BGP neighbors or BGP peers (PEERs). The BGP connection has corresponding links (one or more), and the message transmitted on the BGP connection will be transmitted on the link corresponding to the BGP connection.

A node in the BGP system can record the information of the BGP connection established by the node, which includes: the information of the link corresponding to the BGP connection (such as the identification of the link, the port through which the link passes, etc.), the address of the BGP connection, And the BGP PEER (or BGP neighbor) information associated with the BGP connection. The information of the BGP PEER (or BGP neighbor) associated with the BGP connection includes: the information (such as identification or address, etc.) of the peer node of the BGP connection.

One or more BGP connections can be established between nodes.

For example, please continue to refer to Figure 1, there is one BGP connection established between node 1 and node 2; three BGP connections are established between node 2 and node 3, and one BGP connection is established between node 2 and node 4; Two BGP connections are established between node 3 and node 5, one BGP connection is established between node 3 and node 8, and one BGP connection is established between node 4 and nodes 5, 6, 7, and 8. When multiple BGP connections are established between two nodes, different BGP connections correspond to different links, and packets transmitted on different BGP connections are transmitted on different links.

A node in the BGP system generates an NLRI message, and transmits the NLRI message to other nodes through the BGP connection established by the node. The node will also receive the NLRI message sent by other nodes, and the node can also transmit the NLRI message to other nodes through the BGP connection established by the node. Wherein, the NLRI message generated by the node includes: the information of the node (such as identification or address, etc.), the information of the link between each node directly connected to the node, and the routing information of the node (such as the routing address of the node , routing ID, etc.). Wherein, the identifier of a node may be information that can uniquely determine the node in the whole network, and the node can be uniquely determined according to the identifier of the node, and the identifiers of different nodes are different from each other.

In this way, the NLRI packets generated by each node in the BGP system can be flooded on the entire network, so that each node in the BGP system can obtain the NLRI packets generated by all nodes in the BGP system, and based on these NLRI packets The document determines the network topology of the BGP system, and then forwards service packets according to the network topology.

For example, when a node forwards a service packet to a destination node, it may calculate a path to the destination node according to the network topology and a Shortest path first (SPF) algorithm, and then forward the service packet along the path.

In addition, when the topology of the BGP system changes, the changed node (such as a newly added node, or a node that is connected to a failed node, etc.) will regenerate an NLRI message, and flood the NLRI message in the entire network , so that all nodes in the BGP system can update the network topology.

However, when multiple BGP connections are established between two nodes in the BGP system, when one of the two nodes sends an NLRI message to the other node, the one node will make multiple copies of the NLRI message , and send an NLRI message through each BGP connection in the multiple BGP connections. This causes one node to repeatedly send the NLRI message to another node.

For example, please continue to refer to Figure 1, assuming that node 3 receives the NLRI message sent by node 5, node 3 can determine that there are 3 BGP connections established between node 3 and node 2, at this time, node 3 will copy the NLRI message 2, thus obtaining 3 NLRI messages. Afterwards, node 3 will send the three NLRI messages to node 2 through the three BGP connections one by one.

But in fact, node 2 only needs to obtain one NLRI message, and two of the three NLRI messages are redundant and useless. If the data volume of the NLRI message is X, then the data volume of the three NLRI messages sent by node 3 to node 2 is 3X. Among them, 2X the amount of data is repetitive and useless.

It can be seen that when multiple BGP connections are established between two nodes in the BGP system, NLRI packets will be repeatedly transmitted between the two nodes, causing a high load on the BGP system and affecting the normal operation of the BGP system .

Moreover, when the scale of the BGP system is large, there are many NLRI messages that need to be transmitted in the BGP system. At this time, the pressure on the nodes in the BGP system to send and receive NLRI messages is relatively high, which affects the stable operation of the BGP system and network topology switching (such as switch node when node failure) efficiency.

The embodiment of the present application provides a message transmission method, the method can make it possible to send NLRI messages to neighbor nodes through only some BGP connections when multiple BGP connections are established between nodes, thereby reducing the transmission of NLRI messages between nodes The repetition rate reduces the pressure on nodes to send and receive NLRI messages, reduces the load on the BGP system, and improves the efficiency of network topology switching.

Exemplarily, FIG. 3 is a flow chart of a message transmission method provided in an embodiment of the present application. As shown in FIG. 3, the message transmission method includes:

S101. The first node obtains the NLRI message.

The first node and the second node may be any two nodes in the BGP system, and multiple BGP connections are established between the first node and the second node.

In S101, the first node may generate the NLRI message by itself to obtain the NLRI message. Or, the first node may receive the NLRI message sent by other nodes (different from the second node), so as to obtain the NLRI message.

S102. The first node determines part of the BGP connections among the multiple BGP connections established with the second node.

After obtaining the NLRI message, the first node may forward the NLRI message to other nodes. When the first node is forwarding the NLRI message to the second node, the first node can filter some BGP connections among multiple BGP connections between the first node and the second node, as a means of forwarding the NLRI message to the second node aisle.

For example, please continue to refer to FIG. 1 , assuming that node 3 is the first node, and node 2 is the second node. Three BGP connections are established between node 3 and node 2. As shown in FIG. 4 , these three BGP connections are BGP connections A, B, and C respectively, and node 3 can determine that BGP connection B among the three BGP connections is the above-mentioned partial BGP connection for transmitting NLRI messages.

It can be seen that BGP connection B is used as a BGP connection for transmitting NLRI packets, while BGP connections A and C are not used for transmitting NLRI packets.

The first node may filter some BGP connections among multiple BGP connections according to any one of the following three items.

1. Part of the BGP connection includes: at least one BGP connection with higher bandwidth among multiple BGP connections.

The first node may determine the bandwidth of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with higher bandwidth as the above-mentioned partial BGP connections. In this way, NLRI packets can be guaranteed to be transmitted on the higher-bandwidth BGP connection, and the transmission rate of NLRI packets can be increased.

2. Some BGP connections include: at least one BGP connection with higher message transmission quality among multiple BGP connections;

The first node may determine the packet transmission quality of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with higher packet transmission quality as the above-mentioned partial BGP connections. In this way, it can be ensured that the NLRI message is transmitted on the BGP connection with higher message transmission quality, and the transmission quality of the NLRI message can be improved.

Packet transmission quality may be related to at least one parameter among parameters such as packet loss rate and bit error rate.

3. The partial BGP connection includes: at least one BGP connection with a smaller address among the multiple BGP connections.

The first node may record information about each BGP connection established between the first node and the second node, and the information includes: information about a link corresponding to the BGP connection, and an address of the BGP connection. Also, the addresses of different BGP connections are different.

The first node may determine the address of each BGP connection among the multiple BGP connections, and use one or at least two BGP connections with smaller addresses as the above-mentioned partial BGP connections.

For example, the first node establishes three BGP connections with the second node, and the addresses of the three BGP connections are 1.1.1, 2.2.2, and 3.3.3 respectively. The first node may use the BGP connection with the address 1.1.1 as the aforementioned partial BGP connection.

In the above content, it is taken as an example that the first node determines a part of the BGP connection according to any one of the three parameters of BGP connection bandwidth, packet transmission quality and address.

Optionally, the first node may also determine a part of the BGP connection according to other parameters, and the first node may also determine a part of the BGP connection in combination with multiple parameters, which is not limited in this embodiment of the present application.

S103. The first node sends the NLRI message to the second node through the part of the BGP connection.

After the first node determines the part of the BGP connections, it can send the NLRI message to the second node through each BGP connection in the part of the BGP connections.

When some BGP connections include one BGP connection, the first node does not need to copy the NLRI message, but directly sends the NLRI message obtained in S101 to the second node through the one BGP connection. In this case, the repeated transmission rate of the NLRI message in S101 is low.

When some BGP connections include at least two BGP connections, the first node can copy the NLRI message in S101 to obtain at least two NLRI messages corresponding to the at least two BGP connections one-to-one, and pass each The BGP connection sends a corresponding NLRI message to the second node.

It should be noted that when the part of the BGP connections determined by the first node includes at least two BGP connections (such as two BGP connections), when some BGP connections in the part of the BGP connections fail, the part of the BGP connections has Other BGP connections other than the certain BGP connections can work normally, ensuring that the NLRI message can be effectively transmitted to the second node.

Moreover, since the number of at least two BGP connections is less than the number of the above multiple BGP connections, the repeated transmission rate of the NLRI message in S101 is also low.

For example, assuming that the first node is node 3 in FIG. 4, the second node is node 2 in FIG. 4, and the part of the BGP connection determined by node 3 is BGP connection B in FIG. The NLRI message in is sent to node 2 through BGP connection B.

It can be seen that node 3 does not send the NLRI message to the second node through BGP connections A and C in FIG. 4 . Therefore, there are fewer repeated NLRI messages transmitted between node 1 and node 3 .

To sum up, in the message transmission method provided by the embodiment of the present application, when multiple BGP connections are established between the first node and the second node, the first node only sends NLRI messages to the second node through some BGP connections. arts. In this way, the repetition rate of NLRI message transmission between nodes is reduced, the pressure on nodes to send and receive NLRI messages is reduced, the load of the BGP system is reduced, and the network topology switching efficiency is improved.

The message transmission method provided by this application is described in detail above in conjunction with Fig. 1 to Fig. 4. It can be understood that, in order to realize the functions described in the above-mentioned methods, the node needs to include the corresponding hardware and/or software modules. In combination with the execution process of each method described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software.

Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different ways to implement the described functions in combination with the embodiments for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In this embodiment, functional modules of corresponding devices may be divided according to the above method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above integrated modules may be implemented in the form of hardware.

It should be noted that the division of the modules in this embodiment is schematic, specifically as a possible division of logical functions, and there may be another division in actual implementation.

When the functional module division method is adopted, the message transmission device provided by the present application will be described below with reference to FIG. 5 .

FIG. 5 is a block diagram of a packet transmission device provided by an embodiment of the present application. For example, the packet transmission device may belong to the first node in the foregoing embodiments. The first node establishes multiple BGP connections with the second node.

As shown in FIG. 5 , the packet transmission device includes: an obtaining module 501 , a determining module 502 and a sending module 503 .

The obtaining module 501 is used to obtain the NLRI message; for operations performed by the obtaining module 501, reference may be made to relevant content in S101 above.

The determining module 502 is configured to determine part of the BGP connections among the plurality of BGP connections; for operations performed by the determining module 502, reference may be made to relevant content in S102 above.

The sending module 503 is configured to send the NLRI message to the second node through the partial BGP connection. For operations performed by the sending module 503, reference may be made to related content in S103 above.

The part of BGP connections determined by the first node includes one or at least two BGP connections.

When some BGP connections include one BGP connection, the first node does not need to copy the NLRI message, but directly sends the NLRI message obtained in S101 to the second node through the one BGP connection. In this case, the repeated transmission rate of the NLRI message is low.

When the part of the BGP connection determined by the first node includes at least two BGP connections (such as two BGP connections), when some BGP connections in the part of the BGP connection fail, the part of the BGP connection also has some BGP connections other than the BGP connection. Other BGP connections other than can work normally, ensuring that the NLRI message can be effectively transmitted to the second node.

Moreover, since the number of at least two BGP connections is less than the number of the above multiple BGP connections, the repeated transmission rate of the NLRI message is also low.

Optionally, the partial BGP connections include: at least one BGP connection with higher bandwidth among the multiple BGP connections;

Alternatively, the partial BGP connections include: at least one BGP connection with higher message transmission quality among the multiple BGP connections;

Alternatively, the partial BGP connections include: at least one BGP connection with a smaller address among the multiple BGP connections. The first node may filter some BGP connections among multiple BGP connections according to any one of these three items.

Optionally, the obtaining module 501 is configured to: generate or receive an NLRI message.

Optionally, the first node and the second node belong to different ASs.

Certainly, the first node and the second node may also belong to the same AS, which is not limited in this embodiment of the present application.

To sum up, in the message transmission device provided by the embodiment of the present application, when multiple BGP connections are established between the first node and the second node, the sending module only sends NLRI messages to the second node through some BGP connections . In this way, the repetition rate of NLRI message transmission between nodes is reduced, the pressure on nodes to send and receive NLRI messages is reduced, the load of the BGP system is reduced, and the network topology switching efficiency is improved.

In the case of using an integrated unit, the message transmission device for the first node provided in the present application may include a processing module, a storage module, and a communication module.

Wherein, the processing module may be used to control and manage actions of the message transmission device, for example, may be used to support the message transmission device to perform the actions performed by the first node in S101 to S103 above.

The storage module can be used to support the message transmission device to execute stored program codes and data.

The communication module can be used for communication between the message transmission device and other devices.

Wherein, the processing module may be a processor or a controller. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (digital signal processing, DSP) and a microprocessor, and the like.

The storage module may be a memory.

Specifically, the communication module may be a device that interacts with other devices, such as a radio frequency circuit, a Bluetooth chip, and a Wi-Fi chip.

In one embodiment, when the processing module is a processor, the storage module is a memory, and the communication module is a communication interface, the packet transmission device involved in this embodiment may be a communication device with the structure shown in FIG. 2 .

In an implementation manner, the above-mentioned modules and the like included in the message transmission device may be computer programs stored in a memory, and invoked by a processor to implement corresponding execution functions of each module.

According to the above content, it can be seen that the communication system provided by the embodiment of the present application includes: a first node and a second node, and multiple BGP connections are established between the first node and the second node. The first node may include the packet transmission device shown in FIG. 5 .

The communication system may further include other nodes except the first node and the second node, which will not be described in detail here in this embodiment of the present application.

An embodiment of the present application provides a computer storage medium, and a computer program is stored in the storage medium; when the computer program runs on a computer, the computer executes any one of the message transmission methods provided by the embodiment of the present application. The method executed by the first node.

The embodiment of the present application also provides a computer program product containing instructions, when the computer program product runs on the message transmission device, the message transmission device is made to execute any one of the message transmission methods provided in the embodiments of the present application. The method executed by the first node.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product comprising one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer may be a general purpose computer, a computer network, or other programmable devices.

The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data The center transmits to another website site, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium, or a semiconductor medium (for example, a solid-state hard disk).

In the present application, the terms "first" and "second" etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. The term "at least one" means one or more, and "plurality" means two or more, unless otherwise clearly defined.

Different types of embodiments such as method embodiments and device embodiments provided in the embodiments of the present application may refer to each other, and the embodiments of the present application do not limit this.

The sequence of operations in the method embodiments provided in the embodiments of this application can be appropriately adjusted, and the operations can also be increased or decreased according to the situation. Any person familiar with the technical field can easily think of changes within the technical scope disclosed in this application. Methods should be covered within the scope of protection of the present application, so they will not be repeated here.

In the corresponding embodiments provided in the present application, it should be understood that the disclosed systems and devices may be implemented in other configurations. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules can be combined or integrated into another A system, or some feature, can be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or modules may be in electrical or other forms.

A unit described as a separate component may or may not be physically separated, and a component described as a unit may or may not be a physical unit, and may be located in one place or distributed to multiple devices. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The above is only a specific embodiment of the application, but the scope of protection of the application is not limited thereto. Any person familiar with the technical field can easily think of various equivalents within the scope of the technology disclosed in the application. Modifications or replacements, these modifications or replacements shall be covered within the scope of protection of this application.

Claims (13)

1. A message transmission method, characterized in that, the method is performed by the first node, and the first node and the second node are set up with a plurality of Border Gateway Protocol BGP connections, and the method comprises: Obtain the network layer reachability information NLRI message; determining a portion of BGP connections among the plurality of BGP connections; Send the NLRI message to the second node through the part of the BGP connection. 2. The method according to claim 1, wherein the partial BGP connections comprise: at least two BGP connections. 3. The method according to claim 1 or 2, wherein the partial BGP connections comprise: at least one BGP connection with higher bandwidth among the plurality of BGP connections; The part of BGP connections includes: at least one BGP connection with higher message transmission quality among the multiple BGP connections; Alternatively, the partial BGP connections include: at least one BGP connection with a smaller address among the multiple BGP connections. 4. The method according to any one of claims 1 to 3, wherein said obtaining the NLRI message comprises: Generate or receive the NLRI message. 5. The method according to any one of claims 1 to 4, wherein the first node and the second node belong to the same autonomous system (AS). 6. A message transmission device, characterized in that, the message transmission device belongs to a first node, and the first node and the second node have a plurality of border gateway protocol BGP connections, and the message transmission device includes : An obtaining module, configured to obtain a network layer reachability information NLRI message; A determining module, configured to determine some BGP connections among the plurality of BGP connections; A sending module, configured to send the NLRI message to the second node through the partial BGP connection. 7. The packet transmission device according to claim 6, wherein the part of BGP connections comprises: at least two BGP connections. 8. The packet transmission device according to claim 6 or 7, wherein the partial BGP connections include: at least one BGP connection with higher bandwidth among the multiple BGP connections; The part of BGP connections includes: at least one BGP connection with higher message transmission quality among the multiple BGP connections; Alternatively, the partial BGP connections include: at least one BGP connection with a smaller address among the multiple BGP connections. 9. The message transmission device according to any one of claims 6 to 8, wherein the obtaining module is used for: Generate or receive the NLRI message. 10. The packet transmission device according to any one of claims 6 to 9, wherein the first node and the second node belong to the same autonomous system (AS). 11. A communication device, characterized in that the communication device comprises: a processor and a memory, and a program is stored in the memory; The processor is used to call the program stored in the memory, so that the communication device executes the message transmission method according to any one of claims 1 to 5. 12. A communication system, characterized in that the communication system comprises: a first node and a second node, a plurality of Border Gateway Protocol BGP connections are established between the first node and the second node, the The first node comprises the message transmission device described in any one of claims 6 to 10. 13. A computer storage medium, wherein a computer program is stored in the computer storage medium; When the computer program runs on the computer, the computer executes the message transmission method described in any one of claims 1 to 5.

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