CN115834362A - Network link protection method and related equipment - Google Patents
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Abstract
The embodiment of the application discloses a network protection method and related equipment, which are used for establishing a two-layer network between network storage nodes and reducing the failure rate of a storage system. The method in the embodiment of the application comprises the following steps: if the working two-layer network fails, the storage system equipment determines a target two-layer network, wherein the working two-layer network is a two-layer network for network transmission in the storage system equipment, and the target two-layer network is a two-layer network with optimal network transmission performance in a plurality of two-layer networks of the storage system equipment; and the storage system equipment is switched from the working two-layer network to the target two-layer network.
Description
Technical Field
The embodiment of the application relates to the field of signal processing, in particular to a network link protection method and related equipment.
Background
With the development of the internet, more and more storage system devices transmit information, and accordingly, more information needs to be stored in the storage devices, so that a plurality of storage nodes are required to be connected to form a storage system to bear the data storage service.
In an existing data storage scheme, storage nodes are generally connected together to realize a data storage function as a whole storage system, for example, storage nodes with built-in containers may be connected together in a switch networking or direct network connection manner, that is, a switch and each storage node are connected by a link or a port between each storage node is directly connected by a link, and a container may be managed by an open source component of K8S. The K8S is a management cluster, management among all nodes needs a node Internet Protocol (IP) to communicate, and the management IP address is a fixed address and does not support multiple IPs. For a storage array, a plurality of redundant paths exist on a physical path, and when one link fails, other redundant paths need to be started, so that the availability of the IP address of the node of K8S is guaranteed.
In the existing storage node management method, a storage system connects storage nodes of a built-in container in a mode of switch networking or direct connection network, so that when a link in the system fails, the probability that data in the storage nodes of the built-in container cannot be read is high, and the failure rate of the storage system is high.
Disclosure of Invention
The embodiment of the application provides a network protection method and related equipment, which are used for establishing a two-layer network between network storage nodes and reducing the failure rate of a storage system.
A first aspect of an embodiment of the present application provides a network protection method, where the method is applied to a storage system device, where the storage system device includes multiple network storage nodes, and the multiple network storage nodes form multiple two-layer networks, and the method includes: if the working two-layer network fails, the storage system equipment determines a target two-layer network, wherein the working two-layer network is a two-layer network for network transmission in the storage system equipment, and the target two-layer network is a two-layer network with optimal network transmission performance in a plurality of two-layer networks of the storage system equipment; and the storage system equipment is switched from the working two-layer network to the target two-layer network.
In the possible implementation manner, by establishing a two-layer network between the network storage nodes and automatically switching to the target secondary network when the working secondary network fails, the reliability of the network storage system is higher, the failure rate of the storage system is reduced, the network redundancy of the network storage system is maintained, and the overall experience of a user is improved.
In a possible implementation manner of the first aspect, the storage system device includes a main controller and a plurality of network storage nodes, where the main controller is configured to maintain network states of the plurality of network storage nodes, and if the working two-tier network fails, the storage system device determines a target two-tier network, where the target two-tier network is a two-tier network with optimal network transmission performance in the storage system device, and the method includes: and if the main controller determines that the working two-layer network fails, the main controller determines a target two-layer network, and the target two-layer network is the two-layer network with the optimal network transmission performance in the stored system equipment.
In a possible implementation manner of the first aspect, the switching, by the storage system device, from the working two-tier network to the target two-tier network includes: the main controller sends a network switching notice to the plurality of network storage nodes, wherein the network switching notice indicates that the plurality of network storage nodes are switched from the working two-layer network to the target two-layer network; and the plurality of network storage nodes are switched to the target two-layer network from the working two-layer network.
In one possible implementation manner of the first aspect, the determining, by the storage system device, the target tier-two network includes: the storage system device determines that a two-layer network with the largest number of ports and the longest state duration among the plurality of two-layer networks is the target two-layer network.
A second aspect of the embodiments of the present application provides a network protection method, where the method is applied to a storage system device, where the storage system device includes a plurality of network storage nodes, and the plurality of network storage nodes form a plurality of two-layer networks, and the method includes: the network storage node receives a network switching notice, wherein the network switching notice indicates that the network storage node is switched from a working two-layer network to a target two-layer network, and the working two-layer network is a two-layer network for network transmission of the network storage node; and the network storage node is switched to the target two-layer network from the working two-layer network.
In the possible implementation mode, the two-layer network between the network storage nodes is established, and the network storage system can be automatically switched to the target secondary network when the working secondary network fails, so that the reliability of the network storage system is higher, the failure rate of the storage system is reduced, the network redundancy of the network storage system is maintained, and the overall experience of a user is improved.
In one possible implementation manner of the second aspect, the switching the network storage node from the working two-layer network to the target two-layer network includes: and switching a target port of the network storage node from a first port to a second port, wherein the first port is a network port corresponding to the working two-layer network, and the second port is a network port corresponding to the target two-layer network.
A third aspect of the present application provides a storage system device having a function of implementing the method of the first aspect or any one of the possible implementation manners of the first aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions, such as: a determination unit.
A fourth aspect of the present application provides a network storage node device having a function of implementing the method of any one of the second aspect or possible implementation manner of the second aspect. The function can be realized by hardware, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions, such as: an acquisition unit.
A fifth aspect of the present application provides a storage system apparatus, which includes at least one processor, a memory, an input/output (I/O) interface, and computer-executable instructions stored in the memory and executable on the processor, wherein when the computer-executable instructions are executed by the processor, the processor performs the method according to the first aspect or any one of the possible implementation manners of the first aspect.
A sixth aspect of the present application provides a network storage node device, which includes at least one processor, a memory, an input/output (I/O) interface, and computer-executable instructions stored in the memory and executable on the processor, wherein when the computer-executable instructions are executed by the processor, the processor performs the method according to any one of the possible implementation manners of the second aspect or the second aspect.
A seventh aspect of the present application provides a computer-readable storage medium storing one or more computer-executable instructions that, when executed by a processor, cause the processor to perform a method according to the first aspect or any one of the possible implementation manners of the first aspect.
An eighth aspect of the present application provides a computer-readable storage medium storing one or more computer-executable instructions that, when executed by a processor, cause the processor to perform a method according to the second aspect or any one of the possible implementations of the second aspect.
A ninth aspect of the present application provides a computer program product storing one or more computer executable instructions that, when executed by a processor, perform a method as described in the first aspect or any one of the possible implementations of the first aspect.
A tenth aspect of the present application provides a computer program product storing one or more computer executable instructions that, when executed by a processor, perform a method as set forth in any one of the possible implementations of the second aspect or the second aspect.
An eleventh aspect of the present application provides a chip system, which includes at least one processor, where the at least one processor is configured to implement the functions recited in the first aspect or any one of the possible implementations of the first aspect. In one possible design, the system-on-chip may further include a memory, storage, and a processor for storing program instructions and data necessary for the means for processing the artificial intelligence model. The chip system may be formed by a chip, or may include a chip and other discrete devices.
A twelfth aspect of the present application provides a chip system, which includes at least one processor, and the at least one processor is configured to implement the functions recited in the second aspect or any one of the possible implementations of the second aspect. In one possible design, the system-on-chip may further include a memory, a storage, for storing program instructions and data necessary for the artificial intelligence model based data processing apparatus. The chip system may be formed by a chip, or may include a chip and other discrete devices.
According to the technical scheme, the embodiment of the application has the following advantages:
the embodiment of the application provides a network protection method, which is applied to storage system equipment, wherein the storage system equipment comprises a plurality of network storage nodes, the network storage nodes form a plurality of two-level networks, and the two-level networks among the network storage nodes are established and can be automatically switched to a target two-level network when a working two-level network fails, so that the reliability of the network storage system is higher, the failure rate of the storage system is reduced, the network redundancy of the network storage system is maintained, and the overall experience of a user is improved.
Drawings
FIG. 1 is a schematic view of a storage system;
FIG. 2 is a schematic view of a storage system;
fig. 3 is a schematic structural diagram of a network protection method in an embodiment of the present application;
fig. 4 is a schematic flowchart of a network protection method in an embodiment of the present application;
fig. 5 is a schematic view of another scenario of a network protection method in the embodiment of the present application;
FIG. 6 is a schematic structural diagram of a storage system device in an embodiment of the present application;
fig. 7 is a schematic structural diagram of a network storage node device in an embodiment of the present application;
FIG. 8 is a schematic structural diagram of another storage system device in the embodiment of the present application;
fig. 9 is another schematic structural diagram of a network storage node device in the embodiment of the present application.
Detailed Description
The embodiment of the application provides a network protection method and related equipment, which are used for establishing a two-layer network between network storage nodes and reducing the failure rate of a storage system.
Embodiments of the present application will now be described with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely illustrative of some, but not all, embodiments of the present application. As can be known to those skilled in the art, with the development of technology and the emergence of new scenarios, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.
The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be implemented in other sequences than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 and 2, with the development of the internet, more and more storage system devices transmit information, and accordingly, more information needs to be stored in the storage devices, so that a plurality of storage nodes are required to be connected to form a storage system to undertake data storage. In an existing data storage scheme, storage nodes are generally connected together, so that a data storage function is realized as a storage system as a whole, for example, storage nodes with built-in containers may be connected through a switch networking as shown in fig. 1 or a direct connection network as shown in fig. 2, that is, a switch and each storage node are connected through a link or a port between each storage node is directly connected through a link, and a container may be managed through an open source component of K8S. The K8S is a management cluster, management among all nodes needs a node Internet Protocol (IP) to communicate, and the management IP address is a fixed address and does not support multiple IPs. For a storage array, a plurality of redundant paths exist on a physical path, and when one link fails well, other redundant paths need to be started, so that the availability of the IP address of the node of K8S is guaranteed.
Referring to fig. 3, an embodiment of the present application provides a distributed storage system, where the distributed storage system includes a plurality of network storage nodes, each network storage node includes a corresponding storage container, and each network storage node connects to other network storage nodes using a bridge, i.e., a layer two switch, of its own, so as to form a plurality of layer two network systems. The management system of the distributed storage system is connected with only one two-layer network system, and when the two-layer network system fails, the management system of the distributed storage system is switched to the other two-layer network system, namely each network storage node in the distributed storage system is switched to the other two-layer network system. By establishing the two-layer network system based on the network storage nodes comprising the storage containers, when a link in the distributed storage system fails, the link can be switched to another two-layer network system to bear data storage service, so that the failure rate of the storage system is reduced.
Based on the distributed storage system, the following describes a network link protection method in the embodiment of the present application:
referring to fig. 4, a flow of a network link protection method in the embodiment of the present application includes:
401. the storage system device configures a two-layer network system.
The storage system device comprises a plurality of network storage nodes, each network storage node comprises a corresponding storage container, and each network storage node is connected with other network storage nodes by using a self-contained bridge, namely a two-layer switch, so that a plurality of two-layer network systems are formed. The management system of the distributed storage system is connected with only one two-layer network system.
As shown in fig. 5, in one possible implementation, the storage system device includes a host controller and a plurality of network storage nodes, and the host controller may maintain the member port state of bri. Each network storage node comprises a corresponding storage container, the management IP addresses of all the containers are configured on the target port bri1600, the bri1600 and the bri are connected through a virtual port, each physical network forms a local area network through the bri, and the local area network comprises two layers of networks, such as the first local area network and the second local area network in fig. 5.
402. And if the working two-layer network fails, the storage system equipment determines a target two-layer network.
If the storage system device determines that the working two-layer network has a fault, the storage system device determines a target two-layer network in the two-layer networks, the working two-layer network is the two-layer network in use by the storage system device, namely the two-layer network for network transmission in the storage system device, and the target two-layer network is the two-layer network with the optimal network transmission performance in the two-layer networks. The storage system device determines the next working tier-two network that the target tier-two network uses as a backup.
The target two-layer network in the embodiment of the present application is a two-layer network with the optimal network transmission performance among the multiple two-layer networks, where the two-layer network with the optimal network transmission performance may be the two-layer network with the largest number of ports among the multiple two-layer networks, or the two-layer network with the longest state duration, or may be the two-layer network with the optimal network transmission performance in addition, for example, the two-layer network with the largest number of ports and the longest state duration, or the two-layer network with the fastest transmission speed and the best transmission stability, which is not limited herein.
403. And switching the storage system equipment to a target two-layer network.
After the storage system equipment determines the target two-layer network, the storage system equipment is switched to the target two-layer network, namely, the connection with the previous working two-layer network is cut off, and the connection with the target two-layer network is established.
In one possible implementation manner, the storage system device includes a main controller and a plurality of network storage nodes, and after the main controller determines a target two-layer network, the main controller notifies all the network storage nodes to switch to the target two-layer network. As shown in fig. 5, the host controller notifies all network storage nodes to disconnect the connection between the target port bri1600 and the first port bri0, establish the connection between the bri1600 and the second port bri1, switch from the first lan to the second lan, and switch from the working two-tier network to the target two-tier network.
The embodiment of the application provides a network protection method, which is applied to storage system equipment, wherein the storage system equipment comprises a plurality of network storage nodes, the network storage nodes form a plurality of two-level networks, and the two-level networks among the network storage nodes are established and can be automatically switched to a target two-level network when a working two-level network fails, so that the reliability of the network storage system is higher, the failure rate of the storage system is reduced, the network redundancy of the network storage system is maintained, and the overall experience of a user is improved.
Referring to fig. 6, a storage system device 600 provided in an embodiment of the present application is described below, where the storage system device may be the storage system device in fig. 4, and the storage system device 600 includes:
a determining module 601, configured to determine a target two-layer network if the working two-layer network fails, where the working two-layer network is a two-layer network in the storage system device for network transmission, and the target two-layer network is a two-layer network with optimal network transmission performance in multiple two-layer networks of the storage system device;
in a possible implementation manner, the determining module 601 is specifically configured to determine that a two-layer network in the plurality of two-layer networks, which has the largest number of ports and the longest duration of state, is the target two-layer network.
A switching module 602, configured to switch from the working two-layer network to the target two-layer network.
In a possible implementation manner, the switching module 602 includes:
a sending unit 603, configured to send a network switching notification to the multiple network storage nodes, where the network switching notification indicates that the multiple network storage nodes are switched from the working two-layer network to the target two-layer network;
a switching unit 604, configured to switch from the working two-layer network to the target two-layer network.
In this embodiment, the storage system device may perform operations performed by the storage system device in any one embodiment shown in fig. 4, which is not described herein again specifically.
Referring to fig. 7, a network storage node device 700 provided in an embodiment of the present application is described below, where the network storage node device may be the network storage node device in fig. 4, and the network storage node device 700 includes:
a receiving module 701, configured to receive a network switching notification, where the network switching notification indicates that the network storage node device is switched from a working two-layer network to a target two-layer network, and the working two-layer network is a two-layer network in which the network storage node device performs network transmission;
a switching module 702, configured to switch from the working two-layer network to the target two-layer network.
In a possible implementation manner, the switching module is specifically configured to: and switching a connection port of the target port from a first port to a second port, wherein the first port is a network port corresponding to the working two-layer network, and the second port is a network port corresponding to the target two-layer network.
In this embodiment, the network storage node device may perform operations performed by the network storage node device in any embodiment shown in fig. 4, which is not described herein again specifically.
Fig. 8 is a schematic structural diagram of a storage system device according to an embodiment of the present disclosure, where the storage system device 800 may include one or more Central Processing Units (CPUs) 801 and a memory 805, where the memory 805 stores one or more applications or data.
Wherein the central processor 801 is configured to execute the computer program in the memory 805, so that the storage system apparatus 800 is configured to perform: if the working two-layer network fails, the storage system equipment determines a target two-layer network, wherein the working two-layer network is a two-layer network for network transmission in the storage system equipment, and the target two-layer network is a two-layer network with optimal network transmission performance in a plurality of two-layer networks of the storage system equipment; and the storage system equipment is switched from the working two-layer network to the target two-layer network. For a specific implementation manner, please refer to steps 401-403 in the embodiment shown in fig. 4, which are not described herein again.
The storage system apparatus 800 may also include one or more power supplies 802, one or more wired or wireless network interfaces 803, one or more input-output interfaces 804, and/or one or more operating systems, such as Windows Server, mac OS XTM, unixTM, linuxTM, freeBSDTM, etc.
The storage system device 800 may perform the operations performed by the storage system device in the embodiment shown in fig. 3, which are not described herein again.
Fig. 9 is a schematic structural diagram of a network storage node device according to an embodiment of the present disclosure, where the network storage node device 900 may include one or more Central Processing Units (CPUs) 901 and a memory 905, and the memory 905 stores one or more application programs or data therein.
Wherein the central processor 901 is configured to execute the computer program in the memory 905, so that the network storage node device 900 is configured to perform: the network storage node equipment receives a network switching notice, wherein the network switching notice indicates that the network storage node equipment is switched from a working two-layer network to a target two-layer network, and the working two-layer network is a two-layer network for network transmission of the network storage node equipment; and the network storage node equipment is switched from the working two-layer network to the target two-layer network. For a specific implementation manner, please refer to steps 401-403 in the embodiment shown in fig. 4, which are not described herein again.
Network storage node apparatus 900 may also include one or more power supplies 902, one or more wired or wireless network interfaces 903, one or more input-output interfaces 904, and/or one or more operating systems, such as Windows ServerTM, mac OS XTM, unixTM, linuxTM, freeBSDTM, etc.
The network storage node device 900 may perform the operations performed by the network storage node device in the embodiment shown in fig. 3, which are not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or part of the technical solutions contributing to the prior art, or all or part of the technical solutions, may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a storage system device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
Claims (17)
1. A network protection method is applied to a storage system device, the storage system device comprises a plurality of network storage nodes, and the plurality of network storage nodes form a plurality of two-layer networks, and the method comprises the following steps:
if the working two-layer network fails, the storage system equipment determines a target two-layer network, wherein the working two-layer network is a two-layer network for network transmission in the storage system equipment, and the target two-layer network is a two-layer network with optimal network transmission performance in a plurality of two-layer networks of the storage system equipment;
and the storage system equipment is switched from the working two-layer network to the target two-layer network.
2. The network protection method according to claim 1, wherein the storage system device includes a main controller and a plurality of network storage nodes, the main controller is configured to maintain network states of the plurality of network storage nodes, and if the working layer-two network fails, the storage system device determines a target layer-two network, which is a layer-two network with the best network transmission performance among the storage system devices, and the method includes:
and if the main controller determines that the working two-layer network fails, the main controller determines a target two-layer network, wherein the target two-layer network is the two-layer network with the optimal network transmission performance in the storage system equipment.
3. The network protection method of claim 2, wherein switching the storage system device from the working tier-two network to the target tier-two network comprises:
the master controller sending a network switching notification to the plurality of network storage nodes, the network switching notification indicating that the plurality of network storage nodes are switched from the working two-layer network to the target two-layer network;
the plurality of network storage nodes are switched from the working two-layer network to the target two-layer network.
4. The network protection method of claim 3, wherein the storage system device determining a target tier two network comprises:
and the storage system equipment determines that the two-layer network with the largest port number and the longest state duration in the plurality of two-layer networks is the target two-layer network.
5. A method for network protection, the method comprising:
the method comprises the steps that network storage node equipment receives a network switching notice, wherein the network switching notice indicates that the network storage node equipment is switched from a working two-layer network to a target two-layer network, and the working two-layer network is a two-layer network for network transmission of the network storage node equipment;
and the network storage node equipment is switched from the working two-layer network to the target two-layer network.
6. The network protection method of claim 5, wherein switching the network storage node device from the working two-layer network to the target two-layer network comprises:
the network storage node device switches a connection port of a target port from a first port to a second port, wherein the first port is a network port corresponding to the working two-layer network, and the second port is a network port corresponding to the target two-layer network.
7. A storage system apparatus comprising a plurality of network storage nodes that constitute a plurality of two-tier networks, the storage system apparatus comprising:
the determining module is used for determining a target two-layer network if the working two-layer network fails, wherein the working two-layer network is a two-layer network for network transmission in the storage system equipment, and the target two-layer network is a two-layer network with optimal network transmission performance in a plurality of two-layer networks of the storage system equipment;
and the switching module is used for switching the working two-layer network to the target two-layer network.
8. The storage system device of claim 7, wherein the switching module comprises:
a sending unit, configured to send a network switching notification to the plurality of network storage nodes, where the network switching notification indicates that the plurality of network storage nodes are switched from the working two-layer network to the target two-layer network;
and the switching unit is used for switching the working two-layer network to the target two-layer network.
9. The storage system device of claim 8, wherein the determination module is specifically configured to:
and determining the two-layer network with the largest port number and the longest state duration as the target two-layer network.
10. A network storage node device, characterized in that the network storage node device comprises:
the network switching module is used for switching the network storage node equipment from a working two-layer network to a target two-layer network according to the network switching notification, wherein the working two-layer network is a two-layer network for network transmission of the network storage node equipment;
and the switching module is used for switching the working two-layer network to the target two-layer network.
11. The network storage node device of claim 10, wherein the switching module is specifically configured to:
and switching a connection port of a target port from a first port to a second port, wherein the first port is a network port corresponding to the working two-layer network, and the second port is a network port corresponding to the target two-layer network.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 1-4.
13. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 5-6.
14. A controller comprising a processor and a computer readable storage medium having a computer program stored thereon;
the processor is coupled with the computer-readable storage medium, the computer program realizing the method of any of claims 1-4 when executed by the processor.
15. A router comprising a processor and a computer readable storage medium having a computer program stored thereon;
the processor is coupled with the computer readable storage medium, the computer program realizing the method of any of claims 5-6 when executed by the processor.
16. A chip system, comprising a processor, the processor being invoked for performing the method of any of claims 1-4.
17. A chip system, comprising a processor, the processor being invoked for performing the method of any of claims 5-6.
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| CN202111093049.2A CN115834362A (en) | 2021-09-17 | 2021-09-17 | Network link protection method and related equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111093049.2A CN115834362A (en) | 2021-09-17 | 2021-09-17 | Network link protection method and related equipment |
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| CN115834362A true CN115834362A (en) | 2023-03-21 |
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| CN202111093049.2A Pending CN115834362A (en) | 2021-09-17 | 2021-09-17 | Network link protection method and related equipment |
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