WO2016180081A1 - Configuration information synchronization method, primary device and standby device - Google Patents

Abstract

Disclosed is a configuration information synchronization method, comprising: a primary device respectively determining whether each piece of parsed single configuration information can be executed by a corresponding device; the primary device combining the determined single configuration information which can be executed into configuration information to be executed, and broadcasting same to a standby device and each slave device; and the primary device and the standby device respectively saving the obtained configuration information to be executed in respective configuration information sets. By means of the technical solution, the load of a primary device and a standby device is reduced while realizing configuration synchronization, thereby saving bandwidth resources of a stack system.

Description

Method for synchronizing configuration information, main device and standby device Technical field

The present application relates to, but is not limited to, a stacking technology, and in particular, a method, a master device, and a standby device for synchronizing configuration information.

Background technique

As we all know, device stacking technology is widely used in communications, computers and other fields. Device stacking technology refers to the cascading of multiple devices with the same or similar functions to form a stacking system, which can be regarded as a technology of one device. For example, in the field of communications, multiple network devices (such as switches) with the same or similar functions are cascaded through interfaces (such as Ethernet interfaces) to logically form a network device. In the field of communications, device stacking technology has many advantages, such as reduced complexity of device functionality and/or performance upgrades, thereby ensuring long-term market competitiveness.

From the perspective of the role of the device, the devices in the stack can be divided into three roles: the master device that manages the entire stack system, and the slave devices that implement the service functions of the stack system, such as protocol packet forwarding, under the management of the master device. When the master device fails, it takes over the master device, and when the master device works normally, it plays the role of the slave device. In addition to managing the entire stack system, the master device also acts as a slave device. Generally, a stack system includes a master device, a standby device, and two or more slave devices. The election policy selects which role the devices in the stack system are, that is, the master device, the standby device, or the slave device. It should be noted that the devices in the stacking system can be used as the master device, the standby device, or the slave device. In this document, when it is not necessary to distinguish between a master device, a standby device, and a slave device, they are collectively referred to as devices.

To ensure that the stack system works properly, you need to configure the stack system. It is well known to those skilled in the art that configuration refers to turning on/off a certain function, or setting a certain parameter of a certain function, and the like. Take the switch stacking system as an example. You can configure the MAC access control (MAC) address of each switch in the stacking system, set the access control function for each switch, and so on. Control access control list (ACL). Here, information indicating how the stack system is configured is referred to as configuration information. Configuration The information can be divided into batch configuration information and single configuration information. The single configuration information is used to indicate how to configure one device in the stack system, and the batch configuration information is used to indicate how to configure two or more devices in the stack system. .

After an abnormality occurs in the stack system, in order to facilitate recovery, the master device needs to save each configuration information that has been executed and is in effect to the configuration information set. When you need to restore a stack system (such as restarting the stack system) and reconfigure it, the master device reconfigures the stack system according to each configuration information in the configuration information set. Because the standby device becomes the master device when the master device fails, the standby device also needs to save the configuration information set. Currently, in a stack system, the standby device saves the configuration information set through synchronization configuration.

The synchronization configuration generally includes: the master device receives and parses the configuration information to parse the configuration information into one or more single configuration information, and sends the parsed single configuration information to the corresponding device respectively, according to the single configuration information returned by each device. If the configuration succeeds or fails, the single configuration information of the successful execution is saved to the configuration information set, and the master synchronizes its configuration information set to the standby device. Here, the master device synchronizes its configuration information set to the standby device, and the master device sends the configuration information newly added in the configuration information set to the standby device, so that the standby device updates its configuration information set. It can be seen that, in the above technical solution of the synchronous configuration, on the one hand, since the master device needs to be synchronously configured to the standby device, the load of the master device and the standby device is increased accordingly. On the other hand, in order to implement configuration synchronization, each of the parsed devices needs to be parsed. A single configuration information is sent to the corresponding device. Each device needs to return the configuration result. The master device and the standby device need to synchronize the configuration information. Therefore, a part of the bandwidth resource of the stack system is occupied.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiments of the present invention provide a method for synchronizing configuration information, a master device, and a backup device, which can reduce the load of the master device and the standby device while reducing the bandwidth resources of the stack system.

The embodiment of the invention discloses a method for synchronizing configuration information, including:

The master device determines whether each of the parsed single configuration information can be executed by the corresponding device;

The master device combines the determined executable single configuration information into the to-be-executed configuration information, and broadcasts to the standby device and each slave device;

The master device and the standby device respectively save the obtained configuration information to be executed in the respective configuration information sets.

The method further includes: after each of the slave devices obtains the to-be-executed configuration information, the each slave device separately saves the obtained to-be-executed configuration information to a respective configuration information set.

After the device saves the to-be-executed configuration information to the configuration information set, the method further includes:

Each device parses a single configuration information corresponding to itself from the to-be-executed configuration information, and executes the parsed single configuration information.

Before the master device determines whether each of the parsed single configuration information can be executed by the corresponding device, the method further includes: the master device receiving and parsing the configuration information.

An embodiment of the present invention further discloses a master device, including a determining unit, a sending unit, and a first saving unit, where

Determining a unit, configured to: determine whether each of the parsed single configuration information can be executed by the corresponding device;

a sending unit, configured to: combine the executable single configuration information determined by the determining unit into the to-be-executed configuration information, and broadcast to the standby device and each of the slave devices;

The first saving unit is configured to: save the to-be-executed configuration information obtained by the sending unit combination to the configuration information set of the master device.

The master device further includes a first execution unit configured to: parse a single configuration information corresponding to itself from the to-be-executed configuration information, and execute the parsed single configuration information.

The master device further includes a parsing unit configured to: receive and parse the configuration information.

The embodiment of the present invention further discloses a standby device, which includes at least a second saving unit, configured to: save the received configuration information to be executed to the configuration information set of the standby device.

The standby device further includes a second execution unit, configured to: from the received to-be-configured In the information, the single configuration information corresponding to itself is parsed, and the parsed single configuration information is executed.

The embodiment of the invention further discloses a device, when used as a master device, comprising a determining unit, a sending unit and a first saving unit, wherein

Determining a unit, configured to: determine whether each of the parsed single configuration information can be executed by the corresponding device;

a sending unit, configured to: combine the executable single configuration information determined by the determining unit into the to-be-executed configuration information, and broadcast to the standby device and each of the slave devices;

The first saving unit is configured to: save the to-be-executed configuration information obtained by the sending unit combination to the configuration information set of the device;

When the device is used as a standby device or a slave device, at least the second storage unit is configured to save the received configuration information to be executed to the configuration information set of the device.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, the method for implementing the synchronization configuration information when the computer executable instructions are executed.

The technical solution of the embodiment of the present invention includes: the primary device determines whether each of the parsed single configuration information can be executed by the corresponding device; and the primary device combines the determined executable single configuration information into the to-be-executed configuration information, and broadcasts the The standby device and the slave device respectively save the obtained configuration information to be executed to the respective configuration information set. With the technical solution of the embodiment of the present invention, on the one hand, the standby device updates its configuration information set by receiving the configuration information to be executed, thereby avoiding the function of synchronizing the configuration of the primary device to the standby device, and reducing the load of the primary device and the standby device. On the other hand, the technical solution of the embodiment of the present invention sends the configuration information in a broadcast manner instead of the unicast mode, and avoids the configuration result returned by each device, and avoids the related information that needs to be synchronized and configured between the master device and the standby device. , which saves the bandwidth resources of the stack system.

Other features and advantages of the present application will be set forth in the description which follows. The objectives and other advantages of the present invention can be realized and obtained by the structure of the invention.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

The drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, which is used together with the embodiments of the present application to explain the technical solutions of the present application, and does not constitute a limitation of the technical solutions of the present application.

FIG. 1 is a flowchart of a method for synchronizing configuration information according to an embodiment of the present invention;

2 is a schematic structural diagram of a structure of a master device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a standby device according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system such as a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

In a single device, such as an existing switch, in order to ensure proper configuration of a single device, after receiving the configuration information, a single device usually performs a process of determining whether the configuration information is executable. If the configuration information is executable, configuration is performed according to the configuration information. . Whether the existing configuration information is executable or not includes: checking whether there is a resource available for configuration (referred to herein as a configuration resource check), and checking whether the current configuration information and the executed configuration information meet the preset. The rule (this process is referred to as the configuration rule check in this article). Here's an example,

For the configuration resource check, it is assumed that the configuration information indicates that an ACL rule is established, and the resource check is configured to determine whether there are any available resources for establishing an ACL rule.

For the configuration rule check, it is assumed that the configuration information indicates that a new service is supported on the designated port of the switch (for example, support for resolving a new protocol). For the specified port, the configuration rule checks to determine whether the new protocol conflicts with the supported protocol. Whether the pre-set rule allows new protocols and supported protocols to be supported on the specified port at the same time.

FIG. 1 is a flowchart of a method for synchronizing configuration information according to an embodiment of the present invention, as shown in FIG. 1 The method includes the following steps:

Step 101: The master device determines whether each of the parsed single configuration information can be executed by the corresponding device.

Since the stacking system can be logically regarded as one device, the specific device in the stacking system determines whether a single configuration information is executable, and is similar to the specific implementation in the existing single device to determine whether the configuration information is executable. The technical personnel can easily think of whether the specific implementation of the existing single device is executable or not, and is not intended to limit the scope of protection of the present application, and details are not described herein again.

Before the step 101, the method provided by the embodiment further includes: the master device receives and parses the configuration information. The configuration information of the present invention is not limited to the scope of protection of the present application, and details are not described herein again.

Step 102: The master device combines the determined executable single configuration information into the to-be-executed configuration information, and broadcasts to the standby device and each slave device.

The process of combining the single configuration information into the configuration information to be executed is the reverse of the process of parsing the batch configuration information into one or more single configuration information, and those skilled in the art are familiar with how to parse the batch configuration information. On this basis, it is thought on how to combine the single configuration information into the configuration information to be executed. Obviously, the configuration information to be executed is batch configuration information or single configuration information. Therefore, the specific implementation of step 102 is easily conceivable by those skilled in the art, and details are not described herein again.

Step 103: The master device and the standby device respectively save the obtained configuration information to be executed to the respective configuration information set.

According to step 101, each single configuration information included in the configuration information to be executed can be executed by the corresponding device. Therefore, the master device and the standby device can directly save the to-be-executed configuration information to the respective configuration information sets. For the master device, compared with the related synchronous configuration technical solution, the device does not need to return the configuration result of executing the configuration information to complete the update configuration information set, thereby saving the network bandwidth of the stack system.

Optionally,

After each slave device obtains (ie, receives) the to-be-executed configuration information, the method further includes: Each slave device saves the to-be-executed configuration information to the respective configuration information set. In this way, when the master device fails (for example, the hardware of the master device fails), the stacking system selects the standby device to become the master device according to the relevant election policy, and selects a slave device as the standby device. Because each device before the election maintains a configuration information set, the selected standby device maintains a configuration information set. In this way, after the primary device fails, the selected primary device and the standby device maintain the configuration information set, and the selected primary device in the related configuration synchronization is saved to synchronize the configuration information set with the selected standby device, thereby reducing the stack. The design complexity of the system.

It should be noted that after each device saves the configuration information to be executed to the configuration information set, the method in this embodiment further includes:

Each device parses a single configuration information corresponding to itself from the to-be-executed configuration information, and executes the parsed single configuration information. Each device completes its configuration by performing a single configuration of the parsed information. If each device does not resolve a single configuration information corresponding to itself, the current process ends.

The technical solution of the present application is described in detail below with reference to an embodiment.

Assume that the stacking system is a switch stacking system consisting of four switches, namely switches 1, 2, 3, and 4. Switch 1 is the master device, switch 2 is the standby device, and switches 3 and 4 are slave devices. Received a batch configuration information: Set port 1/1, 2/1, 3/1, 4/1acl200enable. Wherein, 1/1 represents port 1 of switch 1, and so on, 4/1 represents port 1 of switch 4, and the configuration information is used to indicate that the label is set to 200 on port 1 of devices 1, 2, 3, and 4, respectively. An ACL rule. At this time, the corresponding resource of the ACL rule is not established on the switch 4.

According to the above assumption, after receiving the batch configuration information, the master device parses the batch configuration information to obtain single configuration information as shown in Table 1 below.

Set port 1/1acl 200enable
Set port 2/1acl 200enable
Set port 3/1acl 200enable
Set port 4/1acl 200enable

Table 1

Then, for each single configuration information shown in Table 1, the master device determines each single match separately Whether the information can be executed by the corresponding device. Taking the single configuration information (Set port 2/1acl 200enable) shown in the second entry in Table 1 as an example, the master device determines whether the single configuration information can be executed by the switch 2 standby device. By configuring the resource check and configuration rule check, the master device determines that the single configuration information is executable.

Through the above steps, the master device determines that the single configuration information shown in the fourth entry in Table 1 cannot be executed because the corresponding resource of the ACL rule is not established on the switch 4. The other configuration information shown in other entries in Table 1 (ie, other entries in Table 1 except the fourth entry) can be executed.

The master device combines the determined executable single configuration information into the to-be-executed configuration information: Set port 1/1, 2/1, 3/1acl 200enable. The master device saves the to-be-executed configuration information to the configuration information set, parses the single configuration information Set port 1/1acl 200enable corresponding to itself, and executes the single configuration information.

The master device broadcasts the to-be-executed configuration information to the standby device and each of the slave devices, namely switches 2, 3, and 4.

The switch 2 receives the to-be-executed configuration information, saves the to-be-executed configuration information to the configuration information set, parses the single configuration information Set port 2/1acl 200enable corresponding to itself, and executes the single configuration information.

The switch 3 receives the configuration information to be executed, saves the to-be-executed configuration information to the configuration information set, parses the single configuration information Set port 3/1acl 200enable corresponding to itself, and executes the single configuration information.

The switch 4 receives the configuration information to be executed, saves the configuration information to be executed to the configuration information set, parses the single configuration information corresponding to itself, and does not parse the corresponding single configuration information, and does not perform configuration.

2 is a schematic structural diagram of a main device according to an embodiment of the present invention. The main device is configured to form a stacking system. As shown in FIG. 2, the main device includes a determining unit, a sending unit, and a first saving unit, where

Determining a unit, configured to: determine whether each of the parsed single configuration information can be executed by the corresponding device;

a sending unit, configured to: combine the executable single configuration information determined by the determining unit into the to-be-executed configuration information, and broadcast to the standby device and each of the slave devices;

The first saving unit is configured to: save the to-be-executed configuration information obtained by the sending unit combination to the configuration information set of the master device.

Optionally, the master device in FIG. 2 further includes a first execution unit, configured to: parse a single configuration information corresponding to itself from the to-be-executed configuration information, and execute the parsed single configuration information.

Optionally, the master device in FIG. 2 further includes a parsing unit configured to: receive and parse the configuration information.

FIG. 3 is a schematic structural diagram of a backup device according to an embodiment of the present invention. The standby device is configured to form a stacking system. As shown in FIG. 3, the standby device includes at least a second saving unit, and is configured to: save the received to be executed. Configure the configuration information to the configuration information of the standby device.

Optionally, the standby device in FIG. 3 further includes a second execution unit, configured to: parse a single configuration information corresponding to itself from the received configuration information to be executed, and execute the parsed single configuration information.

The stack system consisting of the master device and the standby device in FIG. 2 and FIG. 3 may further include a slave device, where the slave device includes at least a third save unit, configured to: save the received configuration information of the to-be-executed configuration information to the slave device. concentrated.

The slave device may further include a third execution unit configured to: parse the single configuration information corresponding to the self-executed configuration information from the received configuration information, and execute the parsed single configuration information.

The device in the stacking system can also be a master device, a standby device, or a slave device. Therefore, an embodiment of the present invention also discloses a device.

When used as a master device, the device includes a determining unit, a sending unit, and a first saving unit, where

Determining a unit, configured to: determine whether each of the parsed single configuration information can be executed by the corresponding device;

a sending unit, configured to: combine the executable single configuration information determined by the determining unit into the to-be-executed configuration information, and broadcast to the standby device and each of the slave devices;

The first saving unit is configured to: save the to-be-executed configuration information obtained by the sending unit combination to the setting The configuration information of the backup is centralized.

When the device is used as a standby device or a slave device, the device includes at least a second save unit, and is configured to: save the received configuration information to be executed to the configuration information set of the device.

When used as a master device, the device also includes a parsing unit configured to: receive and parse configuration information.

The device further includes a first execution unit configured to parse a single configuration information corresponding to itself from the obtained to-be-executed configuration information, and execute the parsed single configuration information.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, the method for implementing the synchronization configuration information when the computer executable instructions are executed.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. This application is not limited to any specific combination of hardware and software.

The embodiments disclosed in the present application are as described above, but the description is only for the purpose of understanding the present application, and is not intended to limit the present application. Any modifications and changes in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Industrial applicability

The embodiment of the invention provides a method for synchronizing configuration information, a master device and a standby device, which avoids the function of synchronizing the configuration of the master device to the standby device, reduces the load of the master device and the standby device, and avoids the master device and the standby device. The information about the synchronization configuration needs to be exchanged, which saves the bandwidth resources of the stack system.

Claims (11)

1. A method of synchronizing configuration information, including:

   The master device determines whether each of the parsed single configuration information can be executed by the corresponding device;

   The master device combines the determined executable single configuration information into the to-be-executed configuration information, and broadcasts to the standby device and each slave device;

   The master device and the standby device respectively save the obtained configuration information to be executed in the respective configuration information sets.
2. The method according to claim 1, further comprising: after each of the slave devices obtains configuration information to be executed, each of the slave devices separately saves the obtained configuration information to be executed to a respective configuration information set.
3. The method of claim 2, after each device saves the to-be-executed configuration information to the configuration information set, the method further includes:

   Each device parses a single configuration information corresponding to itself from the to-be-executed configuration information, and executes the parsed single configuration information.
4. The method according to any one of claims 1 to 3, further comprising the master device receiving and parsing configuration information.
5. A master device includes a determining unit, a sending unit, and a first saving unit, wherein

   Determining a unit, configured to: determine whether each of the parsed single configuration information can be executed by the corresponding device;

   a sending unit, configured to: combine the executable single configuration information determined by the determining unit into the to-be-executed configuration information, and broadcast to the standby device and each of the slave devices;

   The first saving unit is configured to: save the to-be-executed configuration information obtained by the sending unit combination to the configuration information set of the master device.
6. The master device according to claim 5, further comprising a first execution unit configured to parse a single configuration information corresponding to itself from the to-be-executed configuration information, and execute the parsed single configuration information.
7. The master device according to claim 5 or 6, wherein the master device further comprises a parsing unit, Set to: Receive and parse configuration information.
8. A backup device includes at least a second saving unit, configured to: save the received configuration information to be executed to a configuration information set of the standby device.
9. The standby device according to claim 8, further comprising: a second execution unit, configured to: parse a single configuration information corresponding to itself from the received configuration information to be executed, and execute the parsed single configuration information .
10. a device,

    When used as a master device, including a determining unit, a sending unit, and a first saving unit, wherein

    Determining a unit, configured to: determine whether each of the parsed single configuration information can be executed by the corresponding device;

    a sending unit, configured to: combine the executable single configuration information determined by the determining unit into the to-be-executed configuration information, and broadcast to the standby device and each of the slave devices;

    The first saving unit is configured to: save the to-be-executed configuration information obtained by the sending unit combination to the configuration information set of the device;

    When the device is used as a standby device or a slave device, at least the second storage unit is configured to save the received configuration information to be executed to the configuration information set of the device.
11. A computer readable storage medium storing computer executable instructions that, when executed, implement the method of any of claims 1-4.

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