WO2020047842A1

WO2020047842A1 - Method, system and apparatus for sending link aggregation control protocol message

Info

Publication number: WO2020047842A1
Application number: PCT/CN2018/104611
Authority: WO
Inventors: 刘成; 饶高旺
Original assignee: 华为技术有限公司
Priority date: 2018-09-07
Filing date: 2018-09-07
Publication date: 2020-03-12
Also published as: CN112655178A; CN112655178B

Abstract

Provided are an information sending method and a related device. The method comprises: a first device determining whether a load of the first device is greater than a preset threshold value; and when the load is greater than the preset threshold value, the first device sending a first instruction message to a second device to instruct the second device to select a first period from a period set and send an LACP message to the first device in the first period, wherein the period set comprises the first period and a second period, the first period is greater than the second period, and the first device and the second device are two devices which are connected by means of link aggregation. By means of implementing the embodiments of the present application, where a first device determines that a load of the first device is greater than a preset threshold value, a second device sends an LACP message to the first device in a busy state in a longer first period, so as to avoid LACP oscillation of the two devices, which are connected by means of link aggregation, caused due to the fact that the first device cannot receive or send the LACP message in a timely manner.

Description

Method, system and device for sending link aggregation control protocol message

Technical field

The present application relates to the field of communications, and in particular, to a method, system, and device for sending Link Aggregation Control Protocol messages.

Background technique

Link aggregation technology is a technology that increases the bandwidth of a link by aggregating multiple physical interfaces together as a logical interface. At the same time, link aggregation technology can use a backup link mechanism to effectively improve equipment Link reliability.

After using the link aggregation technology to establish a link aggregation group between two devices, the two ports of each link in the link aggregation group need to send a link aggregation control protocol (Link Aggregation Control Protocol) to each other at a preset period. (LACP) packets to determine whether the other port can work normally. If a port does not receive a LACP packet sent by the peer within three times the preset period, it will consider the peer port to be invalid and LACP will set the The member link corresponding to the port is in a blocked state, and a normal link is found from the backup link to replace the failed link. There are two types of LACP preset cycles: short cycle and long cycle. When the short cycle is selected as the preset cycle, if one of the two devices connected by link aggregation is busy, such as high CPU usage, network Instantaneous increase in traffic and high memory usage of the device may cause the device to have limited data processing capabilities. As a result, the device cannot receive the LACP packets sent by the peer in a timely manner, causing the device to consider the port of the peer device to be invalid or fail to report to the peer The end device sends a LACP packet, which causes the peer device to consider the device port to be invalid, resulting in LACP flapping.

Summary of the Invention

The embodiment of the present application discloses a method for sending a Link Aggregation Control Protocol message. By monitoring the load of a receiving device, when the load of the receiving device is greater than a preset threshold, an LACP message is sent to the receiving device by extending the sending device. Period to prevent LACP flapping between two devices connected through link aggregation.

In a first aspect, an embodiment of the present application provides a method for sending a link aggregation control protocol message, including:

The first device determines whether the load of the first device is greater than a preset threshold;

When the load is greater than the preset threshold, the first device sends a first instruction message to a second device, and the first instruction message is used to instruct the second device to select the first device from a periodic set. Period, and sending a link aggregation control protocol message to the first device in the first period, the period set includes a first period and a second period, and the first period is greater than the second period, so The first device and the second device are two devices connected through link aggregation.

By implementing the embodiments of the present application, the first device and the second device connected through link aggregation can monitor their respective load conditions. When the first device determines that the load of the first device is greater than the preset threshold, it determines If the first device is in a busy state, the first device sends a first instruction message to a second device, so that the second device sends LACP to the first device in a busy state with a longer first period. Message to avoid LACP oscillation between the two devices connected by link aggregation due to the first device not receiving the LACP message in time.

In a possible embodiment, the method further includes: when the load is less than or equal to the preset threshold, the first device sends a second indication message to the second device, and the first The two indication messages are used to instruct the second device to select a second period from the period set, and send a link aggregation control protocol message to the first device in the second period.

In a possible embodiment, when the working state is an idle state, the sending, by the first device, a second indication message to the second device includes:

When the load is less than or equal to the preset threshold, and the duration of the load is less than or equal to the preset threshold, the first device sends a second to the second device Indication message.

By implementing the embodiments of the present application, by setting a preset duration, when the load of the first device is monitored to be less than or equal to the preset threshold and the duration of the load is less than or equal to the preset threshold is greater than the preset duration , The first device is determined to be in a non-busy state to prevent the first device from falsely detecting or due to a short period of time when the load of the first device is less than or equal to the preset threshold, causing the notification to the After the second device is described, the load of the first device is greater than the preset threshold again, and the second device sends the LACP packet at a second cycle after receiving the second indication message, which causes the first device A device cannot be processed in time, which causes link flapping.

In a possible embodiment, after the first device sends the second instruction message to the second device, the method further includes: receiving, by the first device, a third instruction message sent by the second device, according to the third device, The instruction message selects the second period from the period set, and sends a link aggregation control protocol message to the second device in the second period.

In a possible embodiment, after the first device sends the first instruction message to the second device, the method further includes: receiving, by the first device, a fourth instruction message sent by the second device, according to the fourth The instruction message selects the first period from the period set, and sends a link aggregation control protocol message to the second device in the first period.

By implementing the embodiment of the present application, when the first device detects that the load is greater than the preset threshold, and determines that the first device is in a busy state, the first device sends the second device to the second device. The first instruction message so that the second device sends a LACP message to the first device in a first cycle, and the second device determines that the first device is busy according to the first instruction message , The second device may also send a fourth instruction message to the first device, and after receiving the fourth instruction message, the first device selects all the information from the periodic set according to the fourth instruction message. The first cycle is described, and a LACP message is sent to the second device in a longer first cycle to prevent the first device from sending a LACP message to the second device in a timely manner, resulting in link flapping. .

In a possible embodiment, the first indication message is carried in a first link aggregation control protocol message; the second indication message is carried in a second link aggregation control protocol message; the third The indication message is carried in a third link aggregation control protocol message; the fourth indication message is carried in a fourth link aggregation control protocol message.

Since the first device and the second device are connected through link aggregation, the first device and the second device need to periodically exchange LACP packets, so the first instruction message, all The second indication message, the third indication message, and the fourth indication message are carried in a LACP message, without adding other types of messages to carry the above four kinds of indication messages, reducing the number of messages used for sending. Type, which reduces the amount of data the device needs to process.

In a possible embodiment, the first device determining whether the load of the first device is greater than a preset threshold includes:

Acquiring the CPU usage of the first device, and determining whether the load of the first device is greater than a preset threshold according to the CPU usage.

In a second aspect, an embodiment of the present application provides a method for sending a link aggregation control protocol message, including:

Receiving, by the second device, an instruction message sent by the first device, where the first device and the second device are two devices connected through link aggregation;

When the instruction message is a first instruction message, the second device selects a first cycle from a cycle set according to the first instruction message, and sends the first cycle to the first device in the first cycle. For a link aggregation control protocol message, the period set includes a first period and a second period, and the first period is greater than the second period.

In a possible embodiment, the method further includes:

When the mark is a second instruction message, the second device selects the second cycle from a cycle set according to the second instruction message, and sends the second cycle to the first device in the second cycle. Send Link Aggregation Control Protocol messages.

In a possible embodiment, the second device selects the second period from a period set according to the second instruction message, and sends the link aggregation control to the first device in the second period. After the protocol message, it also includes:

Sending, by the second device, a third instruction message to the first device, where the third instruction message is used to instruct the first device to select a second cycle from the cycle set, and send the third cycle to the first device The second device sends a link aggregation control protocol message.

In a possible embodiment, the second device selects a first period from a set of periods according to the first instruction message, and sends a link aggregation control to the first device in the first period. After the protocol message, it also includes:

Sending, by the second device, a fourth instruction message to the first device, where the fourth instruction message is used to instruct the first device to select a first cycle from the cycle set, and send the first cycle to the first device The second device sends a link aggregation control protocol message.

In a third aspect, an embodiment of the present application provides a system for sending a Link Aggregation Control Protocol message, which includes a first device and a second device.

Determining, by the first device, whether a load of the first device is greater than a preset threshold;

Sending, by the first device, a first indication message to the second device when the load is greater than the preset threshold;

Receiving, by the second device, the first indication message, selecting a first period from a period set according to the first indication message, and sending a link aggregation control protocol message to the first device at the first period In the text, the period set includes a first period and a second period, the first period is greater than the second period, and the first device and the second device are two devices connected through link aggregation.

In a possible embodiment, when the first device determines that the load is less than or equal to the preset threshold, the first device sends a second indication message to the second device;

The second device receives the second instruction message, selects the second cycle from a set of cycles according to the second instruction message, and sends a link aggregation control to the first device in the second cycle Protocol messages.

In a possible embodiment, when the first device determines that the load is less than or equal to the preset threshold, sending a second instruction message to the second device includes:

When the first device determines that the load is less than or equal to the preset threshold, and the duration of the load is less than or equal to the preset threshold is greater than a preset duration, the first device sends the The second device sends a second indication message.

In a possible embodiment, the second device receives the second instruction message, selects the second cycle from a cycle set according to the second instruction message, and sends the second cycle to the second cycle according to the second cycle. After the first device sends the link aggregation control protocol message, the method further includes:

Sending, by the second device, a third indication message to the first device;

The first device receives the third instruction message, selects the second cycle from the cycle set according to the third instruction message, and sends link aggregation to the second device in the second cycle Control protocol messages.

In a possible embodiment, the second device receives the first indication message, selects a first period from a period set according to the first indication message, and sends the first period to the first device in the first period. After sending the Link Aggregation Control Protocol message, it also includes:

Sending, by the second device, a fourth indication message to the first device;

The first device receives the fourth instruction message, selects the first cycle from the cycle set according to the fourth instruction message, and sends link aggregation to the second device in the first cycle Control protocol messages.

In a fourth aspect, an embodiment of the present application provides a network device including a unit that executes the method according to the first aspect.

In a fifth aspect, an embodiment of the present application provides a network device including a unit that executes the method according to the second aspect.

According to a sixth aspect, an embodiment of the present application provides a network device, including a processor, a transceiver, and a memory; the memory is configured to store instructions, the processor is configured to execute the instructions, and the transceiver is configured to perform processing in the processing Communicate with other devices under the control of the processor, and when the processor executes the instruction, the method described in the first aspect or any possible implementation manner of the first aspect is executed.

In a seventh aspect, an embodiment of the present application provides a network device, including a processor, a transceiver, and a memory; the memory is used to store instructions, the processor is used to execute the instructions, and the transceiver is used to process the instructions Communicate with other devices under the control of the processor, and when the processor executes the instructions, execute the method described in the second aspect or any possible implementation manner of the second aspect.

In an eighth aspect, an embodiment of the present application provides a computer non-transitory storage medium. The computer non-transitory storage medium stores program code for data processing, where the program code includes a program code for executing Instructions for the method described in the first aspect or any possible implementation of the first aspect above.

In a ninth aspect, an embodiment of the present application provides a computer non-transitory storage medium, where the computer non-transitory storage medium stores program code for data processing, and the program code includes a program for executing the second aspect or Instructions for the method described in any possible implementation of the second aspect.

By implementing the embodiments of the present application, by monitoring the load of the receiving device, in the case that the load of the receiving device is greater than a preset threshold, by extending the period in which the sending device sends LACP packets to the receiving device, it is possible to prevent the LACP flapping between the two devices.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application or the prior art more clearly, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

FIG. 1 is a schematic diagram of link aggregation provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of sending a Link Aggregation Control Protocol message between two devices connected through link aggregation according to an embodiment of the present application.

FIG. 3 is a schematic diagram of information interaction provided by an embodiment of the present application.

FIG. 4 is another schematic diagram of information interaction provided by an embodiment of the present application.

FIG. 5 is another schematic diagram of information interaction provided by an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of another network device according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.

FIG. 9 is a schematic structural diagram of another network device according to an embodiment of the present application.

detailed description

Link aggregation is a technology that aggregates multiple physical interfaces together as one logical interface to increase link bandwidth and improve link reliability. The Link Aggregation Control Protocol (LACP) is a protocol that implements dynamic link aggregation based on the IEEE802.3ad standard. LACP provides a standard negotiation method for the devices that exchange data, so that the devices can automatically form aggregate links according to their own configuration, start the aggregate link to send and receive data, and after the aggregate link is formed, it is responsible for maintaining the link status and when the aggregation conditions occur. When changes occur, link aggregation is automatically adjusted or disbanded.

Link aggregation The logical link formed by aggregating several physical links together is called a Link Aggregation Group (LAG) or Trunk. If these aggregated links are all Ethernet links, the A LAG is called an Ethernet link aggregation (Eth-Trunk). A LAG is a logical Layer 2 interface. The interfaces that make up a LAG are called member interfaces. When the LAG works, the interface that forwards data It is called an active interface (selected), and an interface that does not forward data is called an inactive interface (standby). The link corresponding to the active interface is an active link, and the link corresponding to the inactive interface is an inactive link.

According to the management mode of member interfaces in a link aggregation group, link aggregation can be divided into three modes: manual aggregation mode, static aggregation mode, and dynamic aggregation mode. In the manual aggregation mode, the establishment of the trunk and the addition of member interfaces are manually configured without the participation of LACP. Therefore, this application does not consider the manual aggregation mode. In static aggregation mode, the establishment of trunk interfaces and the addition of member interfaces are all manually configured, and LACP protocol packets participate in the selection of active interfaces. That is, after the administrator adds a group of interfaces to the trunk interface, these Which interfaces of the member interfaces are active interfaces and which interfaces are inactive interfaces need to be determined through LACP negotiation. In dynamic aggregation mode, the establishment of trunk interfaces, the addition of member interfaces, and the selection of active interfaces are completely completed by LACP through negotiation. That is, dynamic LACP aggregation is an aggregation that is automatically created / deleted by the system. It does not require or allow users to add or Delete the member interfaces in dynamic LACP aggregation, and the two devices will automatically complete the link aggregation operation through LACP negotiation.

In the above static aggregation mode and dynamic aggregation mode, when two devices establish a LAG through LACP, the two devices (the local end and the opposite end) need to pass each link (including the active link and the inactive link). Path) Periodically exchange LACP packets to determine whether each interface of the other device is valid. In LACP, the interval for sending LACP packets between two devices includes long period (30 seconds) and short period (1 second). In two devices connected through link aggregation, the local end can require the peer end to A long or short period sends a LACP packet to the local end. The peer end can also require the local end to send a LACP packet to the peer end according to the long or short period. That is, the two devices can send LACP packets at the same or different periods. For example, as shown in Figure 1, an Eth-Trunk is established between Switch A and Switch B through a static aggregation mode. Among them, the port GE1 / 0/1 of Switch A and the port GE1 / 0/1 of Switch B Link 1 formed between the two ports and GE 1/0/2 of Switch A and GE 1/0/2 of Switch B are two active links. Port GE 1/0/3 of Switch A and Link 3 formed between GE1 / 0/3 of Switch B is an inactive link. After an Eth-Trunk is established between Switch A and Switch B, Switch A requires Switch B to send a LACP report to Switch A in a short period. Switch B requires Switch A to send LACP packets to Switch B with a long period. As shown in Figure 2, Switch B sends LACP packets to the three interfaces of Switch A through the above three links every 1 second. Switch A sends LACP packets to the three interfaces of Switch B through the above three links every 30 seconds. After an interface of Switch A receives a LACP packet, if the interface of Switch A does not receive it again after 3 seconds To LACP packets, the Eth-Trunk will shut down the link corresponding to the interface, or Switch B An interface LACP after receiving a message, Switch B if after 90 seconds no interface LACP packets received again, the Eth-Trunk Interface will close the corresponding link.

Currently, whether a device sends a LACP packet with a long period or a short period is determined by the LACP configuration. A bit LACP_Timeout in the Actor_State field in the LACP packet configures the period for the device to send LACP, as shown in Table 1. As shown in the table, Table 1 is the composition of the Actor_State field in the LACP message. When the LACP_Timeout in the LACP message sent by the sender is set to 0, it indicates that the receiver receiving the LACP message is required to request The sender sends a LACP message. When the LACP_Timeout in the LACP message sent by the sender is set to 1, it indicates that the receiver that receives the LACP message is required to send a LACP message to the sender in a short period.

Table 1

LACP_Activity

LACP_Timeout

Aggregation

Synchronization

Collecting

Distributing

Defaulted

Expired

After configuring the length of the LACP packet sent by the device, the period of sending LACP between two devices connected through link aggregation will be fixed. If the LACP_Timeout of a device is set to 1, it is required to connect to the device. Device always sends LACP packets to the device in a short period. In this case, the device may have limited processing capabilities due to high CPU usage and high memory usage of the device, making the device unable to receive or send LACP in a timely manner. In the packet, the Eth-Trunk shuts down the aggregated link, causing the aggregated link to flap.

In order to overcome the above problems, an embodiment of the present application provides a system for sending a link aggregation control protocol message. The system includes a first device and a second device, and the first device and the second device are aggregated through a link. The information interaction diagram between the two devices connected by way of the first device and the second device is shown in FIG. 3, where:

201. The first device determines whether a load of the first device is greater than a preset threshold.

In the embodiment of the present application, the preset threshold may be used to characterize the data processing capability of the first device. The first device periodically obtains the load of the first device and monitors the load of the first device. In the case where the load is greater than the preset threshold, it is determined that the first device is in a busy state and data processing capacity is limited. The preset threshold may be a preset threshold regarding the CPU usage of the first device, or may be The preset threshold of the memory usage of the first device is not specifically limited in the embodiment of the present application. If the preset threshold is a preset threshold regarding CPU usage or a preset threshold for memory usage, the preset threshold may be a percentage threshold, and the preset threshold may be set to 80%. Embodiments of the present application No specific restrictions.

202. When the load is greater than the preset threshold, the first device sends a first indication message to the second device.

In the embodiment of the present application, if the first device determines that the load of the first device is greater than the preset threshold, the first device sends a first instruction message to the second device, and the first instruction The message is used to instruct the second device to send a LACP packet to the first device in a first cycle, and notify the second device that the load of the first device is greater than the preset threshold and is in a busy state. Taking the CPU usage as an example, the first device acquires the CPU usage of the first device at a preset period. If the CPU usage is greater than the preset threshold, the first device determines the first device. If the CPU of the device is in a busy state and the processing capacity of the CPU is limited, the first device sends the first instruction message to the second device.

203. The second device receives the first instruction message, selects a first cycle from a cycle set according to the first instruction message, and sends a link aggregation control to the first device in the first cycle. Protocol messages.

After receiving the first instruction message sent by the first device, the second device selects a first period from a preset period set according to the first instruction message, and uses the first period as the first period. As a period for sending a LACP packet to the first device, the period set includes a first period and a second period, and the first period is greater than the second period.

By implementing the embodiments of the present application, the first device and the second device connected through link aggregation can monitor their respective loads. When the first device determines that the load of the first device is greater than the preset threshold, it determines the If the first device is in a busy state, the first device sends a first indication message to the second device, so that the second device sends a LACP packet to the first device with a longer first period to avoid After the first device transitions from the non-busy state to the busy state, it cannot receive and process the LACP packets in time, which results in LACP oscillation of the two devices connected through link aggregation.

In the embodiment of the present application, the first device periodically obtains the load of the first device, and when the load monitored by the first device is less than or equal to the preset threshold, it indicates that the first device In a non-busy state, the first device sends a second indication message to the second device. The second device receives the second instruction message, selects the second cycle from a set of cycles according to the second instruction message, and sends a link aggregation control to the first device in the second cycle Protocol messages.

In a possible embodiment, as shown in FIG. 4, the embodiment of the present application may further include step 2041 and step 2051:

2041. The first device determines that the load of the first device is less than or equal to the preset threshold, and sends a second indication message to the second device.

If the first device previously monitored that the load of the first device was greater than the preset threshold, and that the load monitored this time was less than or equal to the preset threshold, the first device acquired this time After the load, the first device continues to send the first indication message to the second device, and the first device determines that the first device does not determine the load until the load monitored for multiple consecutive presets is still less than or equal to the preset threshold. The load of a device is less than or equal to the preset threshold, and then the second instruction message is sent to the second device, and the first instruction message is used to instruct the second device to the second device in a first cycle. A device sends a LACP message, and notifies the second device that the first device is busy.

2051. The second device receives the second instruction message, selects a second cycle from a cycle set according to the second instruction message, and sends a link aggregation control to the first device in the second cycle. Protocol messages.

By implementing the foregoing embodiment, the first device may be prevented from being detected incorrectly, or the first device may be transmitting to the second device due to a short period of time when the load of the first device is less than or equal to the preset threshold. After sending the second instruction message, the load of the first device is greater than the preset threshold again, and the second device sends the second instruction message to the first device after receiving the second instruction message LACP packets cause the first device to fail to process in a timely manner and thus cause link flapping.

In a possible embodiment, as shown in FIG. 5, the embodiment of the present application may further include step 2042 and step 2052:

2042. The first device detects that the load of the first device is less than or equal to the preset threshold, and sends a second instruction message to the second device.

If the first device has previously monitored that the load of the first device is greater than the preset threshold, and the load monitored this time is less than or equal to the preset threshold, the first device immediately reports to the The second device sends the second indication message.

2052. The second device determines that the load of the first device is less than or equal to the preset threshold, selects a second period from a period set, and sends a link aggregation to the first device in the second period. Control protocol messages.

When the second device receives the indication message as the first indication message the previous time, and the flag received this time is the second indication message, the second device continues to the first device in the first cycle. The device sends a LACP message, and the second device does not determine that the load of the first device is less than the case that the second device receives the second instruction message in a preset instruction message that is received multiple consecutive times. Or is equal to the preset threshold, and then selects the second period from the period set, and sends a LACP packet to the first device in the second period to prevent the first device from falsely detecting or Because the load of the first device is less than or equal to the preset threshold, the load of the first device after the first device sends the second instruction message to the second device is short. It is greater than the preset threshold again, and the second device sends a LACP packet to the first device in a second cycle after receiving the second instruction message, which causes the first device to fail to process in time and causes a chain. road Shock.

In a possible embodiment, if the first device originally sends a LACP packet to the second device in the second period, the first device is sending the first device to the second device. An instruction message to instruct the second device to send a LACP packet to the first device in a first cycle, and to notify the second device that the first device is busy, and the second device The first indication message determines that the first device is busy, and the second device may send a fourth indication message to the first device to instruct the first device to also select the first period to the first device. The second device sends a LACP message. After the first device receives the fourth instruction message, it is converted into sending a LACP message to the second device in the first period according to the fourth instruction message, so as to prevent the first device from failing to timely Sending a LACP packet to the second device causes link flapping.

In a possible embodiment, if the first device originally sends a LACP packet to the second device in the first period, the first device sends the first device to the second device. Two indication messages to instruct the second device to send a LACP packet to the first device in a second cycle, and to notify the second device that the first device is in a non-busy state, the second device The first instruction message determines that the first device is in a non-busy state, and the second device may send a third instruction message to the first device to instruct the first device to also select the second periodic direction. The second device sends a LACP message, and after receiving the third instruction message, the first device converts to a second device to send a LACP message according to the third instruction message .

In a possible embodiment, the first indication message or the second indication message may be carried in a LACP message, as shown in Table 2 below. Table 2 is a LACP message provided in the embodiment of the present application. Format, the LACP message includes a LACP_Timeout flag bit and a reserved field, the first indication message or the second indication message is a LACP_Timeout flag bit and a message contained in the reserved field, wherein the LACP_Timeout is used to indicate the second device Selecting the first period or the second period, the reserved field is used to notify the second device whether the first device is busy, the default state of the reserved field is all 0, and the default state of the reserved field is used Yu indicates that the device is not busy. For example, when the first device and the second device establish link aggregation and exchange LACP protocols, if the first device sends a LACP packet to the second device and the second device The LACP_Timeout in the LACP message sent by the device to the first device is set to 1, and the reserved fields are the default state, that is, the first device and the second device both send LACP messages to each other in the second cycle. , The first device and the second device are both in a non-busy state. When the first device detects that the load is greater than a preset threshold, the first device changes the LACP_Timeout in the LACP message sent to the second device to 0, and changes the last field of the LACP message to the reserved field. When a bit is changed to 1, the first LACP message carrying the first indication message is obtained, and the first LACP message is sent to the second device. After receiving the first LACP message, the second device selects a first period to send a LACP message to the first device according to the LACP_Timeout in the first LACP message, and determines The first device is in a busy state. After the second device determines that the first device is in a busy state, the second device may also change the LACP_Timeout in the LACP packet sent to the first device to 0 to obtain a third indication message. Sending the third LACP message to the first device, after receiving the third LACP message, the first device receives the third LACP message according to the third LACP message. LACP_Timeout: Select a first period to send a LACP packet to the second device.

Table 2

When the first device detects that the load is less than or equal to the preset threshold, the first device changes the LACP_Timeout in the LACP message sent to the second device to 1 and changes the LACP message The last bit of the reserved field is changed to 0 to obtain a second LACP message carrying the second indication message, and send the LACP message to the second device. Receiving, by the second device, the second LACP message, selecting a second period to send a LACP message to the first device according to the LACP_Timeout in the second LACP message, and determining the second device according to the reserved field The first device is in a non-busy state. After the second device determines that the first device is in a non-busy state, the second device may also change the LACP_Timeout in the LACP packet sent to the first device to 1 to obtain the bearer of the first device. Sending a fourth LACP message of four indication messages to the first device, and after receiving the fourth LACP message, the first device according to the fourth LACP message In the text, LACP_Timeout, select a second period to send a LACP packet to the second device.

It can be understood that the foregoing use of the last bit in the LACP reserved field to indicate whether the device is busy is only an example. In other possible embodiments, multiple consecutive bits in the LACP reserved field may be used to represent, for example, in all In the case where the device needs to send 5 kinds of indication messages, the last 3 bits in the LACP reserved field can be used to indicate whether the device is busy or not, which is not specifically limited in this embodiment of the present application.

Since the first device and the second device are connected through link aggregation, the first device and the second device need to periodically exchange LACP packets, so the first instruction message, all The second indication message, the third indication message, and the fourth indication message are carried in a LACP message without having to add other types of messages to carry the above four kinds of indication messages, reducing the number of messages that the device needs to send. Type, which reduces the amount of data the device needs to process.

In the embodiment of the present application, after the first device sends the first instruction message to the second device, after the first device does not determine that the load of the first device is less than or equal to the preset threshold Previously, the first device always sent the first instruction message to the second device. For example, the first device used a LACP message to carry the first instruction message, and the first device was After the first LACP message of the first indication message is sent to the second device, the first LACP message is sent to the second device until the first device determines that the first device After the load is less than or equal to the preset threshold, the first device sends a second LACP message carrying the second indication message to the second device, and the first device is monitored. The second LACP packet is always sent to the second device until the load of the load is greater than the preset threshold.

In a possible embodiment, the first device may set m preset thresholds, the first device may send m types of indication messages, and the period set may include m periods, and the m Set the threshold to one-to-one correspondence with the m types of indication messages, and one-to-one correspondence with the m types of indication messages, where m is a positive integer greater than or equal to 2, and the first device detects all If the load of the first device is less than or equal to the i-th (i is less than or equal to m-1) preset thresholds, and if the load of the first device is greater than the i + 1th preset threshold, the first device sends to the second device The i + 1th indication message, after receiving the ith indication message, the second device selects the ith period from the period set, and sends a LACP message to the first device in the ith period . For example, if the m is equal to 3, taking the CPU occupancy rate as an example, the CPU occupancy rates are 90%, 80%, and 70% as the first preset threshold value, the second preset threshold value, and the first Three preset thresholds, when the first device detects that the CPU usage of the first device is 91%, the first device sends a first instruction message to the second device, and the second device After receiving the first indication message, the device selects a first period from the period set, and sends a LACP packet to the first device at the first period; when the first device detects that the When the CPU usage of the first device is 83%, the first device sends a second instruction message to the second device, and the second device receives the second instruction message from the second device A second cycle is selected from the cycle set, and a LACP message is sent to the first device in the second cycle, and the first cycle is longer than the second cycle.

In a possible embodiment, the second device may also perform the same functions as the first device in the foregoing embodiments. Similarly, the first device may also perform the same functions as described in the foregoing embodiments. The second device has the same function.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 6, the first network device 400 includes a processing unit 410 and a sending unit 420.

The processing unit 410 is configured to determine whether a load of the first network device is greater than a preset threshold;

The sending unit 420 is configured to send a first instruction message to a second network device when the processing unit 410 determines that the load of the first network device is greater than the preset threshold. For instructing the second network device to select a first period from a set of periods and to send a LACP packet to the first network device in the first period, where the period set includes a first period and a second period, The first period is greater than the second period, and the first network device and the second network device are two devices connected through link aggregation.

In the embodiment of the present application, the sending unit 420 is further configured to: when the processing unit 410 determines that the load of the first network device is less than or equal to the preset threshold, the first network device sends the The second network device sends a second instruction message, and the second instruction message is used to instruct the second network device to select a second period from the period set, and send the second period to the first network in the second period. The device sends a LACP packet.

In a possible embodiment, the sending unit 420 is further configured to determine in the processing unit 410 that a load of the first network device is less than or equal to the preset threshold, and the load is less than or When the duration equal to the preset threshold is greater than the preset duration, sending a second indication message to the second network device.

In a possible embodiment, after the first network device sends the first indication message to the second network device, the first network device receives a fourth indication message sent by the second device , Selecting the first period from the period set according to the fourth instruction message, and sending a LACP message to the second network device in the first period.

In a possible embodiment, after the first network device sends the second indication message to the second network device, the first network device receives a third indication message sent by the second device , Selecting the second period from the period set according to the third instruction message, and sending a LACP message to the second network device in the second period.

In a possible embodiment, the first indication message is carried in a first link aggregation control protocol message, and the second indication message is carried in a second link aggregation control protocol message. The three indication messages are carried in a third link aggregation control protocol message, and the fourth indication message is carried in a fourth link aggregation control protocol message.

In a possible embodiment, the processing unit 410 determines whether the load of the first network device is greater than a preset threshold. Specifically, the processing unit 410 obtains the CPU usage of the first network device. The occupancy rate determines whether a load of the first network device is greater than the preset threshold.

Specifically, for specific implementation of the operations performed by the first network device 400, reference may be made to specific operations of the first device in the foregoing system embodiment, and details are not described herein again.

Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of another network device according to an embodiment of the present application. As shown in FIG. 7, the second network device 500 includes a processing unit 510, a receiving unit 520, and a sending unit 530.

The receiving unit 520 is configured to receive an instruction message sent by a first network device, where the first network device and the second network device are two devices connected through link aggregation;

The processing unit 510 is configured to determine a type of an instruction message received by the receiving unit;

The sending unit 530 is configured to: when the processing unit 510 determines that the instruction message received by the receiving unit 520 is a first instruction message, select a first cycle from a cycle set, and send the first cycle to the The first network device sends a LACP message, and the period set includes a first period and a second period, and the first period is greater than the second period.

In the embodiment of the present application, the sending unit 530 is configured to: when the processing unit 510 determines that the instruction message received by the receiving unit 520 is a second instruction message, select a second cycle from a cycle set, and use the Sending a LACP packet to the first network device in a second period.

In a possible embodiment, the second device selects the second period from a period set according to the second instruction message, and sends the link aggregation to the first device in the second period. After the control protocol message, the method further includes: the second device sends a third instruction message to the first device, where the third instruction message is used to instruct the first device to select a second cycle from the cycle set And sending a link aggregation control protocol message to the second device in the second period.

In a possible embodiment, the second device selects a first period from a set of periods according to the first instruction message, and sends link aggregation to the first device in the first period. After the control protocol message, the method further includes: sending, by the second device, a fourth instruction message to the first device, where the fourth instruction message is used to instruct the first device to select a first period from the period set. And sending a link aggregation control protocol message to the second device in the first period.

Specifically, for specific implementation of each operation performed by the second network device 500, reference may be made to specific operations of the second device in the foregoing system embodiment, and details are not described herein again.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 8, the third network device 600 includes at least a processor 610, an input-output device 620, and a memory 630. The processor 610, the input-output device 620, and the memory 630 are connected to each other through a bus 640.

The processor 610 in the network device 600 is configured to read related instructions in the memory 630 and perform the following operations:

The processor 610 determines whether the load of the third network device is greater than a preset threshold;

When the processor 610 determines that the load is greater than the preset threshold, the processor 610 calls the input / output device 620 to send a first instruction message to a fourth network device, and the first instruction message is used for And instructing the fourth network device to select a first period from a period set, and sending a LACP packet to the third network device in the first period, the period set includes a first period and a second period, so The first period is greater than the second period, and the third network device and the fourth network device are two devices connected through link aggregation.

It should be noted that FIG. 8 is only one possible implementation manner of the embodiment of the present application. In practical applications, the third network device may further include more or fewer components, which is not limited herein. For specific implementation of each operation performed by the third network device 600, reference may be made to the operation of the first device in the foregoing system embodiment, and details are not described herein again.

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in FIG. 9, the fourth network device 700 includes at least a processor 710, an input-output device 720, and a memory 730. The processor 710, the input-output device 720, and the memory 730 are connected to each other through a bus 740.

The processor 710 in the network device 700 is configured to read related instructions in the memory 730 and perform the following operations:

The processor 710 controls the input / output device 720 to receive an instruction message sent by a third network device, where the third network device and the fourth network device are two devices connected through link aggregation;

When the processor 710 determines that the instruction message is a first instruction message, the fourth network device selects a first cycle from a cycle set according to the first instruction message, and controls the input / output device 720 sends a LACP message to the third network device in the first period.

In the embodiment of the present application, when the processor 710 determines that the instruction message is a second instruction message, the fourth network device selects a second cycle from a cycle set according to the second instruction message, and Controlling the input / output device 720 to send a LACP message to the third network device in the second period.

It should be noted that FIG. 9 is only one possible implementation manner of the embodiment of the present application. In practical applications, the third network device may further include more or fewer components, which is not limited herein. For specific implementation of each operation performed by the fourth network device 700, reference may be made to the operation of the first device in the foregoing system embodiment, and details are not described herein again.

In the foregoing embodiment, the processor 610 and the processor 710 may be a central processing unit (CPU), or a combination of a CPU and a hardware chip. The above-mentioned hardware chip may be an Application-Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), or a combination thereof. The PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a universal array logic (GAL), or any combination thereof.

The memory 630 and the processor 730 include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), or Erasable Programmable Read-Only Memory (EPROM or flash memory), used to store program code and data, and can transfer the stored data to the processor.

The bus 640 and the bus 740 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 640 and the bus 740 may be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 8 and FIG. 9, but it does not mean that there is only one bus or one type of bus.

An embodiment of the present invention further provides a computer non-transitory storage medium. The computer non-transitory storage medium stores instructions, and when the computer non-transitory storage medium is run on a processor, the first device in the system embodiment described above can be executed. The operations performed by the second device or the operations performed by the second device in the foregoing system embodiment may also implement the operations performed by the first device and the operations performed by the second device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, 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. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server, or data center Transmission by wire (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) to another website site, computer, server, or data center. 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, a data center, and the like that includes one or more available medium integration. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (Solid State Disk) (SSD)).

The steps in the method of the embodiment of the present application may be sequentially adjusted, combined, or deleted according to actual needs; the modules in the apparatus of the embodiment of the present application may be divided, combined, or deleted according to actual needs.

The embodiments of the present application have been described in detail above. Specific examples have been used in this document to explain the principles and implementation of the present application. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present application. Persons of ordinary skill in the art may change the specific implementation and application scope according to the idea of the present application. In summary, the content of this description should not be construed as a limitation on the present application.

Claims

A method for sending a Link Aggregation Control Protocol message includes:

The first device determines whether the load of the first device is greater than a preset threshold;

When the load is greater than the preset threshold, the first device sends a first instruction message to a second device, and the first instruction message is used to instruct the second device to select the first device from a periodic set. Period, and sending a link aggregation control protocol message to the first device in the first period, the period set includes a first period and a second period, and the first period is greater than the second period, so The first device and the second device are two devices connected through link aggregation.
The method according to claim 1, further comprising:

When the load is less than or equal to the preset threshold, the first device sends a second instruction message to the second device, where the second instruction message is used to instruct the second device to send the second device from the second device. The second period is selected in a period set, and a link aggregation control protocol message is sent to the first device in the second period.
The method according to claim 2, wherein when the load is less than or equal to the preset threshold, the sending, by the first device, a second indication message to the second device comprises:

When the load is less than or equal to the preset threshold, and the duration of the load is less than or equal to the preset threshold, the first device sends a second to the second device Indication message.
The method according to claim 2 or 3, wherein after the first device sends the second instruction message to the second device, the method further comprises:

Receiving, by the first device, a third instruction message sent by the second device, selecting the second cycle from the cycle set according to the third instruction message, and sending the second cycle to the second device in the second cycle The device sends Link Aggregation Control Protocol packets.
The method according to any one of claims 1 to 4, wherein after the first device sends the first instruction message to the second device, the method further comprises:

Receiving, by the first device, a fourth instruction message sent by the second device, selecting the first cycle from the cycle set according to the fourth instruction message, and sending the first cycle to the second cycle in the first cycle The device sends Link Aggregation Control Protocol packets.
The method according to claim 5, wherein:

The first indication message is carried in a first link aggregation control protocol message;

The second indication message is carried in a second link aggregation control protocol message;

The third indication message is carried in a third link aggregation control protocol message;

The fourth indication message is carried in a fourth link aggregation control protocol message.
The method according to any one of claims 1 to 6, wherein the determining, by the first device, whether a load of the first device is greater than a preset threshold comprises:

Acquiring the CPU usage of the first device, and determining whether the load of the first device is greater than a preset threshold according to the CPU usage.
A method for sending a Link Aggregation Control Protocol message includes:

Receiving, by the second device, an instruction message sent by the first device, where the first device and the second device are two devices connected through link aggregation;

When the instruction message is a first instruction message, the second device selects a first cycle from a cycle set according to the first instruction message, and sends the first cycle to the first device in the first cycle. For a link aggregation control protocol message, the period set includes a first period and a second period, and the first period is greater than the second period.
The method according to claim 8, further comprising:

When the instruction message is a second instruction message, the second device selects the second cycle from a cycle set according to the second instruction message, and sends the second cycle to the first The device sends Link Aggregation Control Protocol packets.
The method according to claim 9, wherein after selecting the second period from a period set, and sending a link aggregation control protocol message to the first device in the second period, the method further comprises: include:

Sending, by the second device, a third instruction message to the first device, where the third instruction message is used to instruct the first device to select a second cycle from the cycle set, and send the third cycle to the first device The second device sends a link aggregation control protocol message.
The method according to any one of claims 7 to 10, wherein the first period is selected from a period set, and a link aggregation control protocol message is sent to the first device in the first period. After that, it also includes:

Sending, by the second device, a fourth instruction message to the first device, where the fourth instruction message is used to instruct the first device to select a first cycle from the cycle set, and send the first cycle to the first device The second device sends a link aggregation control protocol message.
The method according to claim 11, wherein:

The first indication message is carried in a first link aggregation control protocol message;

The second indication message is carried in a second link aggregation control protocol message;

The third indication message is carried in a third link aggregation control protocol message;

The fourth indication message is carried in a fourth link aggregation control protocol message.
A system for sending a Link Aggregation Control Protocol message includes: a first device and a second device;

Determining, by the first device, whether a load of the first device is greater than a preset threshold;

Sending, by the first device, a first indication message to the second device when the load is greater than the preset threshold;

The second device receives the first instruction message, selects a first cycle from a cycle set according to the first instruction message, and sends a link aggregation control protocol message to the first device in the first cycle. The cycle set includes a first cycle and a second cycle, the first cycle is greater than the second cycle, and the first device and the second device are two devices connected through link aggregation.
The system according to claim 13, wherein:

When the first device determines that the load is less than or equal to the preset threshold, sending a second instruction message to the second device;

The second device receives the second instruction message, selects the second cycle from a set of cycles according to the second instruction message, and sends a link aggregation control to the first device in the second cycle Protocol messages.
The system according to claim 14, wherein when the first device determines that the load is less than or equal to the preset threshold, sending a second instruction message to the second device includes:

When the first device determines that the load is less than or equal to the preset threshold, and the duration of the load is less than or equal to the preset threshold is greater than a preset duration, the first device sends the The second device sends a second indication message.
The system according to claim 14, wherein the second device receives the second instruction message, selects the second cycle from a cycle set according to the second instruction message, and uses the first After sending a Link Aggregation Control Protocol message to the first device in two cycles, the method further includes:

Sending, by the second device, a third indication message to the first device;

The first device receives the third instruction message, selects the second cycle from the cycle set according to the third instruction message, and sends link aggregation to the second device in the second cycle Control protocol messages.
The system according to any one of claims 13 to 16, wherein the second device receives the first instruction message, selects a first cycle from a cycle set according to the first instruction message, and uses the After sending the link aggregation control protocol message to the first device in the first period, the method further includes:

Sending, by the second device, a fourth indication message to the first device;

The first device receives the fourth instruction message, selects the first cycle from the cycle set according to the fourth instruction message, and sends link aggregation to the second device in the first cycle Control protocol messages.
The system according to claim 17, wherein:

The first indication message is carried in a first link aggregation control protocol message;

The second indication message is carried in a second link aggregation control protocol message;

The third indication message is carried in a third link aggregation control protocol message;

The fourth indication message is carried in a fourth link aggregation control protocol message.
The method according to any one of claims 13 to 18, wherein the determining, by the first device, whether a load of the first device is greater than a preset threshold comprises:

Acquiring the CPU usage of the first device, and determining whether the load of the first device is greater than a preset threshold according to the CPU usage.
A network device, comprising a unit that executes the method according to any one of claims 1 to 7.
A network device, comprising a unit that executes the method according to any one of claims 8 to 12.
A network device includes a processor, a transceiver, and a memory. The memory is used to store instructions, the processor is used to execute the instructions, and the transceiver is used to communicate with the processor under the control of the processor. Other devices perform communication, and when the processor executes the instructions, the method according to any one of claims 1 to 7 is performed.
A network device includes a processor, a transceiver, and a memory. The memory is used to store instructions, the processor is used to execute the instructions, and the transceiver is used to communicate with the processor under the control of the processor. Other devices communicate, and when the processor executes the instructions, the method according to any one of claims 8 to 12 is executed.
A computer non-transitory storage medium, wherein the computer non-transitory storage medium stores a computer program, characterized in that, when the computer program is executed by a computing device, the method according to any one of claims 1 to 7 is implemented.
A computer non-transitory storage medium storing a computer program, wherein the computer program implements the method according to any one of claims 8 to 12 when executed by a computing device.