WO2020177471A1

WO2020177471A1 - Message transmission method, apparatus and storage medium

Info

Publication number: WO2020177471A1
Application number: PCT/CN2019/130613
Authority: WO
Inventors: 汪寅
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-03-06
Filing date: 2019-12-31
Publication date: 2020-09-10
Also published as: CN111669280A; CN111669280B

Abstract

Provided in the present disclosure are a message transmission method, an apparatus and a storage medium. The message transmission method may be used in a first network device, and may comprise: querying a resource card state table, obtaining a query result; the resource card state table comprising an active or stand by state and an online state of at least one resource card of a first network device, said online state of at least one resource card being determined by a transmission result of a heartbeat detection session between said at least one resource card and at least one other resource card; according to the query result, determining a current first resource card of the first network device carrying a service message between the first network device and a second network device; in response to determining according to the query result that the first resource card is in an offline state, then, according to the query result, selecting a second resource card of the first network device to transmit a service message.

Description

Message transmission method, device and storage medium

Technical field

The present disclosure relates to the field of communication technology, and in particular to a method, device and storage medium for message transmission.

Background technique

In some situations, a peer-to-peer Bidirectional Forwarding Detection (BFD) connection can be established between two network devices, so that BFD service packets between the two network devices are transmitted through respective resource boards. If the resource board used to carry BFD service packets in one of the network devices is offline, the network device at the opposite end will not be able to receive the BFD service packets sent by the network device within the preset period of time, and then disconnect from the network device. The peer-to-peer BFD connection established by the network device causes the service interruption between the two network devices.

Summary of the invention

One aspect of the embodiments of the present disclosure provides a message transmission method, including: querying a resource board status table to obtain a query result; wherein the resource board status table includes the active/standby status and online status of at least one resource board of the first network device, The online status of the at least one resource board is determined by the transmission result of the heartbeat detection session between the at least one resource board and the at least one other resource board; according to the query result, it is determined that the current bearer connection between the first network device and the second network device The first resource board of the first network device of the service message; and, in response to determining that the first resource board is offline according to the query result, the second resource board of the first network device is selected according to the query result to transmit the service message.

Another aspect of the embodiments of the present disclosure provides a message transmission device, including: a query unit configured to query a resource board status table to obtain a query result; wherein the resource board status table includes the master of at least one resource board of the first network device The online status of the at least one resource board is determined by the transmission result of the heartbeat detection session between the at least one resource board and at least one other resource board; the determining unit is configured to determine the current bearer status according to the query result. A first resource board of the first network device of a service message between a network device and a second network device; and the transmission unit is configured to respond to determining that the first resource board is offline according to the query result, and select according to the query result The second resource board of the first network device transmits the service message.

Another aspect of the embodiments of the present disclosure provides a message transmission device, including: a processor and a memory configured to store a computer program that can run on the processor, wherein the processor is configured to run the computer program to execute the present disclosure At least one step of the message transmission method provided in the embodiment.

Another aspect of the embodiments of the present disclosure provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, at least one step of the message transmission method provided in the embodiment of the present disclosure is implemented.

Description of the drawings

FIG. 1 is a schematic diagram of service message transmission in a virtual private network (Virtual Private Network, VPN) Fast Reroute (Fast Reroute, FRR) service scenario.

Figure 2 is another schematic diagram of service message transmission in the VPN FRR service scenario.

FIG. 3 is a schematic structural diagram of a first network device provided by an embodiment of the disclosure.

FIG. 4 is a schematic flowchart of a message transmission method provided by an embodiment of the disclosure.

FIG. 5 is another schematic structural diagram of the first network device provided by an embodiment of the disclosure.

FIG. 6 is a schematic diagram of the main resource board transmitting service messages according to an embodiment of the disclosure.

FIG. 7a is a schematic diagram of a backup resource board provided by an embodiment of the disclosure sending service packets.

FIG. 7b is a schematic diagram of receiving service packets by the backup resource board provided by an embodiment of the disclosure.

FIG. 8 is a schematic structural diagram of a message transmission apparatus provided by an embodiment of the disclosure.

FIG. 9 is a schematic structural diagram of another message transmission device provided by an embodiment of the disclosure.

detailed description

The present disclosure will be further described in detail below with reference to the drawings and embodiments.

In some cases, the reliability of the network and link can be ensured through hardware redundancy, protection switching strategies, and link detection at each layer of the network; the overall protection strategy is adopted to ensure the reliability of network equipment, that is, a stand-by device is independently arranged The network equipment protects the main network equipment.

Figure 1 and Figure 2 are schematic diagrams of service message transmission in the VPN FRR business scenario. Figure 1 shows three Provider Edge (PE) devices and one Customer Edge (CE) using a distributed system architecture. ) Equipment, the three PE equipments are PE equipment 1, main PE equipment, and backup PE equipment. A peer-to-peer BFD connection is established between PE device 1 and the main PE device, so that BFD service packets (also called BFD fast packets) between the two network devices can be transmitted through their respective line cards; among them, BFD fast packets are sent and received The line card is also called a resource board. If the resource board used to carry BFD fast packets in the master PE device fails and goes offline, PE device 1 will not be able to receive the BFD fast packets sent by the master PE device within the preset time period. Device 1 will disconnect the peer-to-peer BFD connection with the primary PE device and switch the link to the standby PE device. As shown in Figure 2, when the main PE device transmits BFD fast packets through line card 1 (resource board), if line card 1 is offline, the peer PE device 1 will not be able to receive the BFD fast packet sent by the main PE device within the preset time. Packets, the VPN FRR switch is triggered through the fast sensing mechanism of the packet receiving timeout, and the peer PE device 1 will disconnect the peer BFD connection with the primary PE device and establish a peer BFD connection with the standby PE device.

In the above method, when the resource board used to carry BFD service packets of one of the network devices is offline, the opposite network device cannot receive the BFD service packets, which will cause service interruption between the two network devices The problem.

Based on this, the embodiment of the present disclosure provides a message transmission method, which can query the resource board status table to obtain the query result. The resource board status table includes the active and standby status and online status of the resource board. The active and standby status and online status of the resource board are determined by The transmission result of the heartbeat detection session between the resource boards is determined; the first resource board carrying service packets between the first network device and the second network device is determined according to the query result; the first resource board is determined to be offline according to the query result In the state, select the second resource board of the first network device to transmit the service message according to the query result.

In order to have a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not used to limit the present disclosure.

Fig. 3 is a schematic structural diagram of a first network device provided by an embodiment of the present disclosure. As shown in Figure 3, the first network device may include: a main control board, a resource board, and a message transmission board. The main control board may include a first switching chip, the resource board may include a second switching chip, and the message transmission board may include a network processing chip. The message transmission board and the resource board can be set on the same circuit board, or they can be set independently.

The embodiment of the present disclosure provides a message transmission method, which can be applied to a first network device. As shown in FIG. 4, it is a schematic flowchart of a message transmission method provided by an embodiment of the present disclosure, and the method may include step 401 to step 403.

In step 401, the resource board status table is queried to obtain the query result. The resource board status table includes the active and standby status and online status of the resource boards. The online status of the resource boards is determined by the transmission result of the heartbeat detection session between the resource boards.

In an exemplary embodiment, the first network device may specifically be a PE device that adopts a distributed system architecture; wherein, the PE device that adopts a distributed system architecture can independently receive and send service packets by a line card. The resource board may refer to the line card used in the first network device to carry the service messages transmitted between the first network device and the second network device; among them, the service may refer to the function of short packet transmission interval and fast detection of packet receiving timeout. The business messages include but are not limited to BFD messages and so on.

In an exemplary embodiment, the message transmission board of the first network device needs to establish a resource board status table before querying the resource board status table. Correspondingly, the method may further include: assigning corresponding index identifiers to multiple resource boards of the first network device; determining the active/standby status and online status of each resource board; establishing index identifiers and active/standby status for each resource board Correspondence between and online status to obtain the resource board status table.

In an exemplary embodiment, the resource board status table may include three entries, namely, index identification, active/standby status, and online status; if the value of the active/standby status includes 0 and 1, then 0 may indicate the active use of the resource board, 1 can indicate that the resource board is standby; if the value of the online status includes 0 and 1, then 0 can indicate that the resource board is online, and 1 can indicate that the resource board is offline.

It should be noted that the active and standby status of the resource board is for the business. Assume that the service has sessions A and B. Session A is carried by the resource board with index identification 01, and session B is carried by the resource board with index identification 02 ; The resource board bearing session A and index identification 01 can be used as the main resource board, and the resource board bearing session B and index identification 02 can be used as the backup resource board. The backup resource board is used to guarantee when the main resource board is offline The service of session A is not interrupted; alternatively, the resource board bearing session B and index identification 02 can be the main resource board, and the resource board bearing session A and index identification 01 is the backup resource board, and the backup resource board is used for Ensure that the services of session B are not interrupted when the main resource board is offline.

Table 1 is an example of the established resource board status table. As shown in Table 1, assume that the first network device includes 3 resource boards, and the assigned index identifiers are 01, 02, and 03 respectively. Assign the initial active/standby status and online status to the three resource boards: the active/standby status corresponding to the resource board numbered 01 is "active" and the online status is "online"; the active/standby status corresponding to the resource board numbered 02 is "Standby", the online status is "Online"; the active/standby status corresponding to the resource board numbered 03 is "Standby", and the online status is "Offline".

索引标识Index ID	主备状态Active and standby status	在线状态online status
0101	主the Lord	在线Online
0202	备Prepare	在线Online
0303	备Prepare	离线Offline

Table 1

In an exemplary embodiment, after the message transmission board of the first network device establishes the resource board status table, one resource board of the first network device can establish a heartbeat detection session connection with other resource boards respectively, so that the connection between the two resources The boards exchange heartbeat detection sessions. When one resource board sends a heartbeat detection session to another resource board, and the other resource board does not receive the heartbeat detection session sent by the resource board within a predetermined period of time, the other resource board can quickly detect that the resource board is offline ; Otherwise, the other resource board can quickly detect that the resource board is online. In this way, the resource board of the first network device can send the transmission result of the heartbeat detection session to the message transmission board of the first network device, so the message transmission board of the first network device can use the heartbeat detection session transmission between the resource boards As a result, the resource board status table is updated.

In an exemplary embodiment, the heartbeat detection session may include a message header and message data. In actual applications, the internal private header can be used to encapsulate the message header. The message header can include the queue number, the index identification of the source resource board, the index identification of the destination resource board, the heartbeat detection session mark, etc.; the message data can be determined according to actual needs. To save hardware overhead, the length of the heartbeat detection session should be as fixed as possible and not too long. The packet sending interval of the heartbeat detection session can be determined by comprehensively considering factors such as hardware overhead, bandwidth limitation, and the degree of support of the resource board.

In an exemplary embodiment, the message transmission board of the first network device can determine the active resource board and whether the resource board is online by querying the resource board status table; it can also determine the backup resource board and the resource Whether the board is online.

Based on this, in an exemplary embodiment, querying the resource board status table to obtain the query result may include: querying the resource board status table to obtain the active/standby status and online status of the first resource board, and the active/standby status of the second resource board Status and online status. For example, suppose that the main resource board is queried from the resource board status table, and the main resource board is in the online state, and the corresponding index identifier is 01.

In step 402, a first resource board carrying service packets between the first network device and the second network device is determined according to the query result.

In an exemplary embodiment, if the message transmission board of the first network device finds that the index identifier corresponding to the main resource board in the online state is 01, the message transmission board of the first network device may use the index identifier 01 The main resource board is used to carry service messages between the first network device and the second network device.

In step 403, in response to determining that the first resource board is offline according to the query result, select the second resource board of the first network device to transmit the service message according to the query result.

In an exemplary embodiment, when the message transmission board of the first network device queries from the resource board status table that the primary resource board is offline, the message transmission board of the first network device queries the standby Resource board, if the index identifier corresponding to the online backup resource board is found to be 02, then the backup resource board with the index identifier 02 is used instead of the first resource board to transmit the service message.

In an exemplary embodiment, before the message transmission board of the first network device determines that the first resource board is offline according to the query result, the second resource board of the first network device may communicate between itself and the first resource board. The transmission result of the heartbeat detection session determines whether the first resource board is offline. Or, before the message transmission board of the first network device determines that the first resource board is offline according to the query result, the resource boards of the first network device except the second resource board communicate with the first resource board through itself. The transmission result of the heartbeat detection session between the resource boards determines whether the first resource board is offline.

Based on this, in an exemplary embodiment, the method may further include: determining that the heartbeat detection session sent by the first resource board is not received within a set time period, and updating the online status of the first resource board in the resource board status table.

If the second resource board of the first network device determines that the heartbeat detection session sent by the first resource board is not received within the set time, the second resource board of the first network device determines that the first resource board is offline, and The transmission result of the heartbeat detection session is sent to the message transmission board of the first network device, and the message transmission board of the first network device updates the online status of the first resource board in the resource board status table. In this way, when the message transmission board of the first network device queries the resource board status table, it can be determined that the first resource board is offline according to the query result.

For example, suppose the value of the online status of the first resource board includes 0 and 1, 0 means the resource board is online, 1 means the resource board is offline; after determining that the first resource board is offline, you can set the The value of online status is changed from 0 to 1.

In an exemplary embodiment, if the first resource board is offline and the backup resource board used to take over the first resource board and the third resource board are unavailable, the message transmission board of the first network device needs to reselect the available The backup resource board uses the newly selected backup resource board to transmit service messages.

Based on this, in an exemplary embodiment, before selecting the second resource board of the first network device to transmit the service message according to the query result, the method may further include: when it is determined that the third resource board is offline according to the query result, Determine at least one resource board in an online state from the resource boards of the first network device except the first resource board, determine the service volume carried by each resource board in the at least one resource board, and determine according to the determined The service volume selects a second resource board from the at least one resource board, and the second resource board transmits service packets.

In order to achieve load balancing, based on the service volume carried by each resource board in the at least one resource board, the resource board carrying the smallest service volume may be determined; and the determined resource board may be used as the second resource board. The message transmission board of the first network device may also select a spare resource board for the second resource board. Specifically, it may be determined that it is online from the resource boards of the first network device except the second resource board. At least one resource board in the state, determine the service volume carried by each resource board in the at least one resource board, and select the resource board with the smallest service volume from the at least one resource board according to the determined service volume as the backup resource of the second resource board board.

In an exemplary embodiment, when the first network device sends a service message to the second network device, if the first resource board is offline, the message transmission board of the first network device can select the second resource board to send the service message to the second network device. 2. The network device sends a service message.

Based on this, in an exemplary embodiment, selecting the second resource board of the first network device to transmit the service message may include: sending the service message to the second network device through the second resource board.

In an exemplary embodiment, the information carried in the service message sent by the second resource board may include: the index identifier of the resource board, service data, and so on. The index identification of the resource board may specifically refer to the line card number of the resource board.

Before the second resource board sends the service message to the second network device, the main control board of the first network device can create the service message to be sent; carry the index identification and service data of the second resource board in the created service Message: Send the created service message to the second resource board of the first network device. In this way, after the message transmission board of the first network device selects the second resource board, the second resource board may send to the second network device a service message carrying the index identifier and service data of the second resource board.

When the first resource board is offline, the second resource board sends service packets to the second network device, which can ensure that the second network device can receive the service packets sent by the first network device within a preset time period, and then The connection established with the first network device will not be disconnected, and the service between the two network devices will not be interrupted.

In an exemplary embodiment, when the first network device receives the service message sent by the second network device, if the first resource board is offline, the message transmission board of the first network device can select the second resource board to receive Service message sent by the second network device.

Based on this, in an exemplary embodiment, selecting the second resource board of the first network device to transmit the service message may further include: receiving the service message sent by the second network device through the second resource board.

When the first resource board is offline, the second resource board receives the service packet sent by the second network device, which can ensure that the first network device can receive the service packet sent by the second network device within the preset time period. Furthermore, the connection established with the second network device will not be disconnected, and the service between the two network devices will not be interrupted.

In an exemplary embodiment, when the first network device receives the service message sent by the second network device, if the second resource board in the online state does not have the packet receiving or packet receiving timeout detection function, the first resource When the board is offline, neither the first resource board nor the second resource board can receive the service packets sent by the second network device, which may cause the first network device to disconnect the connection established with the second network device, resulting in two The service between the two network devices is interrupted; therefore, the first resource board and the second resource board need to have packet receiving or packet receiving timeout detection functions.

Based on this, in an exemplary embodiment, receiving the service message sent by the second network device through the second resource board may include: copying the received service message sent by the second network device to obtain the copied service Message; and, sending the received service message sent by the second network device to the first resource board, and sending the copied service message to the second resource board.

In an exemplary embodiment, before the second resource board receives the service message sent by the second network device, the message transmission board of the first network device may query the service forwarding table, and the service forwarding table includes the online information of the main resource board. Status and forwarding outlet, where the forwarding outlet is determined by the online status of the main resource board; the resource board pointed to by the queried forwarding outlet receives the service message sent by the second network device.

Before the message transmission board of the first network device queries the service forwarding table, the message transmission board of the first network device needs to use the online status of the first resource board to update the query service forwarding table; that is, on the first network When the message transmission board of the device determines that the first resource board is offline, the message transmission board of the first network device needs to update the resource board pointed to by the forwarding outlet in the service forwarding table from the first resource board to the standby second resource board; , The message transmission board of the first network device can query the second resource board from the service forwarding table, and the second resource board receives the service message sent by the second network device.

It should be noted that after the message transmission board of the first network device determines that the first resource board is offline, if the message transmission board of the first network device does not update the service forwarding table in time, that is, the forwarding exit in the service forwarding table still points to the first resource board. A resource board, after the message transmission board of the first network device queries the service forwarding table, in addition to sending service messages to the first resource board, in order to ensure uninterrupted services between the first network device and the second network device, It is also necessary to copy the received service message sent by the second network device, and send the copied service message to the second resource board.

In an exemplary embodiment, before the message transmission board of the first network device queries the service forwarding table, the service forwarding table needs to be established.

Based on this, in an exemplary embodiment, the method may further include: establishing the online status of the main resource board, the index identification of the main resource board, and the corresponding relationship between the forwarding outlets, and obtaining the service forwarding table.

Table 2 is an example of the established service forwarding table. In Table 2, if the main resource board is online, the forwarding outlet points to the main resource board, which is about to receive the service packets sent by the second network device and transfers to the main resource board; if the main resource board is offline, the forwarding outlet points to the standby resource board, i.e. Receive the service message sent by the second network device and transmit it to the backup resource board.

Table 2

In an exemplary embodiment, after the second resource board of the first network device transmits service messages, in order to save hardware overhead, the message transmission board of the first network device may transfer the data of the second resource board in the resource board status table. The status of master and slave is updated.

Based on this, after selecting the second resource board of the first network device to transmit the service message, the method may further include: updating the active/standby status of the second resource board in the resource board status table.

For example, suppose that the values of the active and standby states of the second resource board include 0 and 1, where 0 represents the primary resource board, and 1 represents the standby resource board. Then the message transmission board of the first network device can transfer the resource board status table The value of the active/standby status of the second resource board is changed from 0 to 1.

After updating the active/standby status of the second resource board in the resource board status table, the second resource board serves as the new primary resource board. The process of selecting the new standby resource board may include: removing the first resource board from the resource board of the first network device. 2. Determine at least one resource board that is online among other resource boards; determine the service volume carried by each resource board in the at least one resource board; determine the service from the at least one resource board according to the determined service volume The resource board with the smallest volume; and the determined resource board with the smallest business volume as the new backup resource board.

Using the message transmission method provided by the embodiments of the present disclosure, when the first resource board of the first network device is offline, the second resource board of the first network device transmits service messages; therefore, the second network device can The service packet sent by the first network device can be received within the preset time period, and the first network device can also receive the service packet sent by the second network device within the preset time period, thereby ensuring that the first network device and The business between the second network devices is not interrupted.

In addition, a heartbeat detection session can be established between each resource board of the first network device, so that it can quickly detect whether each resource board is online according to the transmission result of the heartbeat detection session, so that the first resource board can be used quickly when the first resource board is offline. The second resource board transmits service messages, thereby improving message transmission efficiency.

The message transmission method provided by the embodiments of the present disclosure will be described in detail below in conjunction with application examples.

Fig. 5 is another schematic structural diagram of the first network device provided by an embodiment of the present disclosure. As shown in FIG. 5, the first network device may include: a service message creation module, a service transmission module, a service module, a heartbeat detection module, an alarm processing module, and a table maintenance module.

The business message creation module can be set on the main control board and used to create business messages carrying the index identifier of the resource board on each resource board.

The service transmission module can be set on the message transmission board to determine whether the main resource board and the backup resource board are online according to the resource board status table when the first network device sends a service message to the second network device; if the main resource If the board is online, select the main resource board to send service messages to the second network device; if the main resource board is offline and the backup resource board is online, select the backup resource board to send service messages to the second network device; if the main resource board is offline, If the backup resource board is offline, the available backup resource board is reselected, and the newly selected backup resource board sends a service message to the second network device. The service transmission module can also be used to determine whether the main resource board and the backup resource board are online according to the resource board status table when the first network device receives the service message sent by the second network device; if the main resource board is online, select the main resource board Receive the business message sent by the second network device; if the main resource board is offline and the backup resource board is online, copy the received business message sent by the second network device to obtain the copied business message, which is received by the backup resource board The copied business message; if the main resource board is offline and the backup resource board is offline, then the available backup resource board is reselected, and the newly selected backup resource board receives the copied business message.

The business module can be set on the resource board for the sending and receiving and processing of business messages. The business module set on the main resource board may be called the main business module, and the business module set on the standby resource board may be called the standby business module.

The heartbeat detection module can be set on the resource board to activate the heartbeat detection session, send heartbeat detection sessions to other resource boards, and receive heartbeat detection sessions sent by other resource boards at the same time. The heartbeat detection module can also be configured to trigger the alarm processing module to interrupt alarm processing once the heartbeat detection session times out.

The activation process of the heartbeat detection session may include: Step 1. During the initialization process of the resource board, the first resource board creates a heartbeat detection session; after enabling the service message sending function, the first resource board sends the heartbeat detection session. Step 2. After the first resource board receives the heartbeat detection session sent by the second resource board, it uses the source resource board information carried in the heartbeat detection report session to activate the session timeout detection function to complete the connection between the first resource board and the second resource board. Heartbeat detection session activation.

It should be noted that, considering that the forwarding of the heartbeat detection session cannot be affected by the service packet, the forwarding queue where the heartbeat detection session is located may be different from the forwarding queue where the service packet is located.

The alarm processing module can be set on the resource board to send alarm information to the table maintenance module when the heartbeat detection session times out; the alarm information can carry the heartbeat detection session transmission result indicating that the resource board is offline.

The table maintenance module can be set on the message transmission board to receive the alarm information sent by the alarm processing module; use the heartbeat detection session transmission result carried by the alarm information to update the resource board status table. The table maintenance module can also be configured to use the heartbeat detection session transmission result carried in the alarm information to determine the online status of the main resource board, and to update the service forwarding table using the determined online status of the main resource board.

It should be noted that the main control board may include a first switching chip, which is implemented by the central processing unit; the resource board may include a second switching chip, which is implemented by a coprocessor; and the message transmission board may include a network processing chip, which is implemented by a network processor. achieve. The message transmission board and the resource board can be set on the same circuit board.

Example one

The application scenario of this example is: the first network device in FIG. 5 sends a service packet to the second network device. Among them, the line card 1 in FIG. 5 is the main resource board, and the line card 3 is the backup resource board of the line card 1; the line card 1 corresponds to the aforementioned first resource board, and the line card 3 corresponds to the aforementioned second resource board.

With reference to the schematic structural diagram of the first network device shown in FIG. 5, the sending process of the service message may specifically include the following steps.

The service transmission module queries the resource board status table to obtain the query result, and the query result of the resource board status table may specifically include the following situations.

Case 1: If the main resource board (line card 1) is found to be online, the service transmission module selects line card 1, and the main service module of line card 1 sends the service message to the second network device, as shown in FIG.

Case 2: If the main resource board (line card 1) is found to be offline, and the backup resource board (line card 3) is found to be online, the service transmission module selects line card 3, and the backup service module of line card 3 transfers the service message Send to the second network device, as shown in Figure 7a.

Case 3: If the main resource board (line card 1) is found to be offline and the backup resource board (line card 3) is found to be offline, the service transmission module reselects the backup resource board, and the service module of the newly selected backup resource board will The service message is sent to the second network device.

The process of reselecting the backup resource board by the service transmission module may include: suppose that the first network device includes line card 1 (main resource board), line card 2, line card 3 (backup resource board), and line card 4; among them, line card 1 Offline, line card 3 is offline, line card 2 and line card 4 are both online, and the business volume carried by line card 2 is greater than the business volume carried by line card 4; then line card 4 can be used as a reselected backup resource board.

It should be noted that the main service module of line card 1 can send service messages to the second network device after enabling the service message sending function; the service messages can carry the line card corresponding to the resource board (line card 1) Number, represented by 01. The service module of line card 2 can also send service messages to the second network device after enabling the service message sending function; the service messages can carry the line card number corresponding to the resource board (line card 2), which is represented by 02 . The standby service module of line card 3 can also send service messages to the second network device after enabling the service message sending function; the service messages can carry the line card number corresponding to the resource board (line card 3), using 03 Said. Among them, the business message creation module can create business messages on line card 1, line card 2, and line card 3, and carry the corresponding line card number in the business message.

In this example, when the line card 1 is offline, the line card 3 can send a service message to the second network device to ensure that the second network device receives the service message sent by the first network device within a preset time period, and then The connection established with the first network device is maintained, thereby ensuring that the service between the two network devices is not interrupted.

Example two

The application scenario of this example is: the first network device in FIG. 5 receives a service packet sent by the second network device. Among them, the line card 1 in FIG. 5 is the main resource board, and the line card 3 is the backup resource board of the line card 1; the line card 1 corresponds to the aforementioned first resource board, and the line card 3 corresponds to the aforementioned second resource board.

With reference to the schematic structural diagram of the first network device shown in FIG. 5, the process of receiving a service message may specifically include the following steps.

In case 1, if the main resource board (line card 1) is found to be online, and after the service forwarding table is checked, the service transmission module sends the received service message sent by the second network device to the main service module of the line card 1.

Case 2: If the main resource board (line card 1) is found to be offline, and the backup resource board (line card 3) is found to be online, then after the service forwarding table is queried, the service transmission module will receive the data received and sent by the second network device The service message is sent to the main service module of the line card 1; and, the received service message sent by the second network device is copied to obtain the copied service message, and the copied service message is sent to The standby service module of line card 3 is shown in Figure 7b.

Case 3: If the main resource board (line card 1) is found to be offline, and the backup resource board (line card 3) is found to be offline, the service transmission module re-selects the backup resource board, which is received by the service module of the newly selected backup resource board Business packets after copying.

It should be noted that when the line card 1 is offline, the standby service module of the line card 3 has the function of closing the packet receiving or receiving timeout detection function, which can avoid empty windows in the service receiving during the process of switching from the line card 1 to the line card 3. The issue of the period.

In this example, when the line card 1 is offline, the line card 3 can receive the service message sent by the second network device to ensure that the first network device receives the service message sent by the second network device within a preset time period. Furthermore, the connection established with the first network device is maintained, thereby ensuring that the service between the two network devices is not interrupted.

Example three

The application scenario of this example is: line card 1 in Figure 5 is the main resource board, and line card 1 is offline. Among them, the line card 1 corresponds to the aforementioned first resource board.

With reference to the schematic structural diagram of the first network device shown in FIG. 5, the process of updating the resource board status table by the table maintenance module may include the following steps 1 to 3.

In step 1, the heartbeat detection module of line card 3 determines that the heartbeat detection session sent by the heartbeat detection module of line card 1 has not been received within a predetermined period of time, and triggers the alarm processing module of line card 3 to perform interruption alarm processing.

In step 2, the alarm processing module of the line card 3 generates alarm information, and reports the alarm information to the table maintenance module.

The alarm information may carry the line card number corresponding to the cable card 1 and is used to characterize the offline session status of the line card 1. The session status may include UP and DOWN; where UP indicates that the resource board is online, and DOWN indicates that the resource board is offline.

In step three, the table maintenance module receives the alarm information sent by the alarm processing module of the line card 3, and uses the line card number of the line card 1 carried in the alarm information to characterize the offline session status of the linear 1 and compare the resource board status table The online status of line card 1 is updated.

The embodiment of the present disclosure also provides a message transmission device, which can be set on the first network device. As shown in FIG. 8, which is a schematic structural diagram of a message transmission device provided by an embodiment of the disclosure, the message transmission device may include a query unit 81, a determination unit 82 and a transmission unit 83.

The query unit 81 may be configured to query the resource board status table to obtain the query result. The resource board status table includes the active and standby status and online status of the resource boards. The online status of the resource boards is determined by the transmission result of the heartbeat detection session between the resource boards.

The determining unit 82 may be configured to determine the first resource board carrying service packets between the first network device and the second network device according to the query result.

The transmission unit 83 may be configured to select the second resource board of the first network device to transmit the service message according to the query result when it is determined that the first resource board is offline according to the query result.

In an exemplary embodiment, before querying the resource board status table, a resource board status table needs to be established. Correspondingly, the device may further include: a table building unit (not shown in FIG. 8), which may be configured to allocate corresponding index identifiers for multiple resource boards of the first network device; determine the active and standby status and online status of each resource board Status: For each resource board, establish the corresponding relationship between the index identification, the active/standby status and the online status to obtain the resource board status table.

In an exemplary embodiment, the message transmission board of the first network device can query the resource board status table to determine the active resource board and whether the resource board is online; it can also determine the backup resource board and the Whether the resource board is online.

Based on this, in an exemplary embodiment, the query unit 81 may be specifically configured to query the resource board status table to obtain the active/standby status and online status of the first resource board, and the active/standby status and online status of the second resource board. .

Based on this, in an exemplary embodiment, the device may further include: an update unit (not shown in FIG. 8), which may be configured to determine that the heartbeat detection session sent by the first resource board is not received within a set time period, Update the online status of the first resource board in the resource board status table.

In an exemplary embodiment, if the first resource board is offline and the third resource board used to replace the first resource board is unavailable, the message transmission board of the first network device needs to reselect an available spare resource board, The service message is transmitted by the newly selected backup resource board.

Based on this, in an embodiment, the device may further include: a selection unit (not shown in FIG. 8), which may be configured to download from the resource board of the first network device when it is determined that the third resource board is offline according to the query result Determine at least one resource board in an online state among other resource boards except the first resource board; determine the service volume carried by each resource board in the at least one resource board, and determine the service volume from the at least one resource board according to the determined service volume The second resource board is selected in the, and the second resource board transmits service messages.

In an exemplary embodiment, when the first network device sends a service message to the second network device, if the message transmission board of the first network device inquires that the first resource board is offline, the report of the first network device The message transmission board may select the second resource board to send the service message to the second network device.

Based on this, in an exemplary embodiment, the transmission unit 83 may be specifically configured to send service packets to the second network device through the second resource board.

Based on this, in an exemplary embodiment, the transmission unit 83 may be specifically configured to receive the service message sent by the second network device through the second resource board.

Based on this, in an exemplary embodiment, the transmission unit 83 may be specifically configured to copy the received service message sent by the second network device to obtain the copied service message; and send to the first resource board The received service message sent by the second network device sends the copied service message to the second resource board.

Based on this, in an exemplary embodiment, the table building unit may also be configured to establish the online status of the main resource board, the index identification of the main resource board, and the corresponding relationship between the forwarding outlets, and obtain the service forwarding table.

Based on this, the update unit may also be configured to update the active/standby status of the second resource board in the resource board status table.

After updating the active/standby status of the second resource board in the resource board status table, the second resource board serves as the new primary resource board. The process of selecting the new standby resource board may include: removing the first resource board from the resource board of the first network device. 2. Determine at least one resource board that is online among other resource boards; determine the service volume carried by each resource board in the at least one resource board, and determine the service from the at least one resource board according to the determined service volume The resource board with the smallest volume; and the determined resource board with the smallest business volume as the new backup resource board.

In an exemplary embodiment, the query unit 81, the determination unit 82, the transmission unit 83, the table creation unit, the update unit, and the selection unit may all be implemented by a processor in the message transmission device.

The embodiment of the present disclosure also provides another message transmission device, as shown in FIG. 9, which is a schematic structural diagram of the other message transmission device provided by the embodiment of the disclosure. The message transmission device 90 may include ：Communication interface 91, processor 92, memory 93; among them, the communication interface 91 can interact with other devices; the processor 92 is connected with the communication interface 91 to realize the information interaction with the second network device, which can be configured as When the computer program is run, at least one step of the message transmission method provided in the embodiment of the present disclosure is executed; the computer program may be stored in the memory 93.

In an exemplary embodiment, the various components in the message transmission device 90 may be coupled together through the bus system 94. It can be understood that the bus system 94 may be configured to implement connection and communication between these components. In addition to the data bus, the bus system 94 also includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are marked as the bus system 94 in FIG. 9.

The memory 93 in the embodiment of the present disclosure may be configured to store various types of data to support the operation of the message transmission device 90. Examples of these data include: any computer program for operating on the message transmission device 90.

The methods disclosed in the foregoing embodiments of the present disclosure may be applied to the processor 92 or implemented by the processor 92. The processor 92 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by hardware integrated logic circuits in the processor 92 or instructions in the form of software. The aforementioned processor 92 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 92 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present disclosure. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present disclosure may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the memory 93. The processor 92 reads the information in the memory 93 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the message transmission device 90 may be implemented by one or more application specific integrated circuits (Application Specific Integrated Circuit, ASIC), DSP, programmable logic device (Programmable Logic Device, PLD), complex programmable logic Device (Complex Programmable Logic Device, CPLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller (Micro Controller Unit, MCU), microprocessor (Microprocessor), Or implemented by other electronic components to perform the foregoing method.

It should be noted that: "first", "second", etc. are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence.

In addition, the technical solutions described in the embodiments of the present disclosure may be combined arbitrarily without conflict.

The above are only preferred embodiments of the present disclosure, and are not used to limit the protection scope of the present disclosure.

Claims

A message transmission method, applied to a first network device, includes:

Query the resource board status table to obtain the query result; wherein, the resource board status table includes the active/standby status and online status of at least one resource board of the first network device, and the online status of the at least one resource board is determined by the at least one resource board. The transmission result of the heartbeat detection session between one resource board and at least one other resource board is determined;

According to the query result, determine the first resource board of the first network device that currently carries the service message between the first network device and the second network device; and

In response to determining that the first resource board is offline according to the query result, selecting the second resource board of the first network device to transmit the service message according to the query result.
The method according to claim 1, before selecting the second resource board to transmit the service message according to the query result, further comprising:

In response to determining that the third resource board of the first network device is in an offline state according to the query result;

Determine at least one resource board that is online from among the resource boards of the first network device other than the first resource board;

Determining the service volume carried by each resource board in the at least one resource board in an online state; and

According to the determined business volume, the second resource board is selected from the at least one resource board in an online state.
The method according to claim 1, wherein selecting the second resource board to transmit the service message comprises:

Sending the service message to the second network device through the second resource board; or

Receiving the service message sent by the second network device through the second resource board.
The method according to claim 3, wherein the receiving the service message sent by the second network device through the second resource board comprises:

Copy the received service message sent by the second network device to obtain a copied service message;

Sending the received service message sent by the second network device to the first resource board; and

Sending the copied service message to the second resource board.
The method according to claim 1, wherein querying the resource board status table to obtain the query result comprises:

Query the resource board status table to obtain the active/standby status and online status of the first resource board and the active/standby status and online status of the second resource board.
The method according to claim 1, further comprising:

For the multiple resource boards of the first network device, respectively assign corresponding index identifiers;

Determining the active/standby status and online status of the at least one resource board among the multiple resource boards; and

For the at least one resource board, a correspondence relationship between index identification, active/standby status, and online status is established to obtain the resource board status table.
The method according to claim 1, further comprising:

Determining that the heartbeat detection session sent by the first resource board is not received within a set time period; and

Update the online status of the first resource board in the resource board status table.
The method according to claim 1, after selecting the second resource board to transmit the service message, further comprising:

Update the active/standby status of the second resource board in the resource board status table.
A message transmission device includes:

The query unit is configured to query the resource board status table to obtain the query result; wherein the resource board status table includes the active/standby status and online status of at least one resource board of the first network device, and the online status of the at least one resource board is determined by Determining the transmission result of the heartbeat detection session between the at least one resource board and at least one other resource board;

The determining unit is configured to determine, according to the query result, the first resource board of the first network device that currently carries the service message between the first network device and the second network device; and

The transmission unit is configured to, in response to determining that the first resource board is offline according to the query result, select the second resource board of the first network device to transmit the service message according to the query result.
The device according to claim 9, further comprising a selection unit configured to:

In response to determining that the third resource board of the first network device is in an offline state according to the query result;

Determine at least one resource board that is online from among the resource boards of the first network device other than the first resource board;

Determining the service volume carried by each resource board in the at least one resource board in an online state; and

According to the determined business volume, the second resource board is selected from the at least one resource board in an online state.
The apparatus according to claim 9, wherein the transmission unit is specifically configured to send the service message to the second network device through the second resource board; or to receive the service message through the second resource board. The service message sent by the second network device.
The apparatus according to claim 11, wherein the transmission unit is specifically configured as follows:

Copy the received service message sent by the second network device to obtain a copied service message;

Sending the received service message sent by the second network device to the first resource board; and

Sending the copied service message to the second resource board.
The device according to claim 9, wherein the query unit is specifically configured to query the resource board status table to obtain the active/standby status and online status of the first resource board and the master of the second resource board Standby status and online status.
The device according to claim 9, further comprising a table building unit configured to:

For the multiple resource boards of the first network device, respectively assign corresponding index identifiers;

Determining the active/standby status and the online status of the at least one resource board among the multiple resource boards; and

For the at least one resource board, a correspondence relationship between index identification, active/standby status, and online status is established to obtain the resource board status table.
The device according to claim 9, further comprising an update unit configured to:

Determining that the heartbeat detection session sent by the first resource board is not received within a set time period; and

Update the online status of the first resource board in the resource board status table.
The apparatus according to claim 15, wherein the update unit is further configured to update the first resource board in the resource board status table after the transmission unit selects the second resource board to transmit the service message 2. The active and standby status of the resource board.
A message transmission device, comprising: a processor and a memory configured to store a computer program that can run on the processor, wherein the processor is configured to execute the computer program according to claims 1 to 8. The steps of any one of the methods.
A storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are realized.