CN102780570A - Achieving method and system for management of cloud computing devices - Google Patents
Achieving method and system for management of cloud computing devices Download PDFInfo
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- CN102780570A CN102780570A CN2011101196805A CN201110119680A CN102780570A CN 102780570 A CN102780570 A CN 102780570A CN 2011101196805 A CN2011101196805 A CN 2011101196805A CN 201110119680 A CN201110119680 A CN 201110119680A CN 102780570 A CN102780570 A CN 102780570A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5061—Partitioning or combining of resources
- G06F9/5072—Grid computing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/04—Network management architectures or arrangements
- H04L41/046—Network management architectures or arrangements comprising network management agents or mobile agents therefor
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Abstract
The invention discloses an achieving method and a system for management of cloud computing devices. The system comprises a device Master, a device Agent, and a network management server, wherein the device Master is used for receiving and storing information of the cloud computing devices managed by the Master and uploading the information to the device Agent; and the device Agent is used for storing the received information of the cloud computing devices and uploading information to the network management server which is used for obtaining and storing the information of the cloud computing devices from the device Agent. Through adoption of the technical scheme, inconvenience due to manual intervention can be avoided, and the working efficiency can be improved.
Description
Technical Field
The invention relates to a network management technology, in particular to a method and a system for realizing cloud computing equipment management.
Background
Cloud computing products have been increasingly used in the business product field. The essence of cloud computing is a distributed system which is formed by the cooperative organization of a plurality of devices and completes computing tasks together, and the distributed system has the advantages of simple capacity expansion, low capacity expansion cost and the like. The number of devices in cloud computing is not determined, and the devices need to be increased or decreased at any time according to the traffic.
Currently, the existing cloud computing adopts a traditional device management system, which usually only includes a network management server and cloud computing devices, wherein the network management server is responsible for managing the cloud computing devices, and each cloud computing device is regarded as a network element. However, the network management server can only manage a known fixed number of network elements, and when the network elements are added or deleted, the network management server needs to modify the information of the network elements, such as alarms and performance statistics, through manual operation. However, the number of cloud computing devices is not fixed and may vary with the traffic, and therefore, using a conventional device management system, adding or deleting information such as alarms and performance statistics of network elements requires manual intervention, which undoubtedly brings huge workload, thereby reducing work efficiency and bringing considerable inconvenience.
Disclosure of Invention
In view of this, the main objective of the present invention is to provide a method and a system for implementing cloud computing device management, which solve the inconvenience caused by manual intervention and improve the work efficiency.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a system for realizing cloud computing equipment management, which comprises:
the equipment Master is used for receiving and storing the equipment information of the cloud computing equipment managed by the equipment Master and then uploading the equipment information to the equipment Agent;
the equipment Agent is used for storing the received equipment information of the cloud computing equipment and uploading the equipment information to the network management server;
and the network management server is used for acquiring and storing the equipment information of the cloud computing equipment through the equipment Agent.
The scheme further comprises the following steps: a cloud-computing device having a cloud computing device,
the cloud computing equipment is used for actively sending a registration message to the Master;
the equipment Master is specifically used for: and registering the cloud computing equipment according to the equipment information in the registration message and storing the equipment information.
In the foregoing solution, the cloud computing device is further configured to: sending heartbeat messages to the equipment Master and replying response messages to the heartbeat messages sent by the equipment Master;
The equipment Master is further used for: and sending the heartbeat message to the cloud computing device and replying a response message to the heartbeat message sent by the cloud computing device.
In the above scheme, the device Agent is specifically configured to: sending an equipment information acquisition message to the equipment Master, and storing the equipment information sent by the equipment Master; the device Master is specifically configured to: sending equipment information of the cloud computing equipment managed by the cloud computing equipment to an equipment Agent;
and/or the presence of a gas in the gas,
the network management server is specifically configured to: sending a device acquisition message to a device Agent, and storing device information sent by the device Agent; the device Agent is specifically used for: and after receiving the equipment acquisition message, uploading the stored equipment information to a network management server.
In the above scheme, when the cloud computing devices managed by the device Master are added or deleted,
the device Master is specifically configured to: actively sending the updated equipment information to an equipment Agent;
the device Agent is specifically configured to: updating the stored equipment information according to the updated equipment information sent by the equipment Master, and uploading the updated equipment information to a network management server;
the network management server is specifically configured to: and updating the stored equipment information according to the updated equipment information sent by the equipment Agent.
The invention also provides a method for realizing cloud computing equipment management, which comprises the following steps:
the equipment Master receives and stores the equipment information of the cloud computing equipment managed by the equipment Master, and then uploads the equipment information to the equipment Agent;
and the equipment Agent stores the received equipment information of the cloud computing equipment and uploads the equipment information to the network management server, and the network management server stores the received equipment information.
In the above scheme, the receiving and storing, by the device Master, device information of the cloud computing device managed by the device Master includes:
when the cloud computing equipment is started or joined, actively sending a registration message to the equipment Master;
and the equipment Master registers the cloud computing equipment according to the equipment information in the registration message and stores the equipment information.
In the above scheme, the device Master managing cloud computing device includes:
the equipment Master and the managed cloud computing equipment mutually send heartbeat messages, and a party receiving the heartbeat messages replies response messages.
In the above scheme, the uploading to the device Agent includes: when the equipment Agent is started, sending an equipment information acquisition message to the equipment Master, and uploading equipment information of the cloud computing equipment managed by the equipment Master to the equipment Agent; and/or the presence of a gas in the gas,
the network management server sends the equipment acquisition message to the equipment Agent, the equipment Agent uploads the stored equipment information to the network management server, and the network management server stores the equipment information sent by the equipment Agent.
In the above scheme, when the cloud computing devices managed by the device Master are added or deleted, the method specifically includes:
the equipment Master actively sends the updated equipment information to the equipment Agent;
the equipment Agent updates the stored equipment information according to the updated equipment information sent by the equipment Master and uploads the updated equipment information to the network management server;
and the network management server updates the stored equipment information according to the updated equipment information sent by the equipment Agent.
Therefore, the method and the system for realizing cloud computing equipment management provided by the invention have the following characteristics and advantages:
the invention manages hundreds of continuously changing devices in cloud computing, and the addition and deletion of the cloud computing devices can timely and automatically inform and upload the information to the network management server, thereby improving the working efficiency of the system and avoiding the inconvenience of manual intervention.
Drawings
FIG. 1 is a block diagram of an implementation system for cloud computing device management of the present invention;
FIG. 2 is a flow chart of a method for implementing cloud computing device management in accordance with the present invention;
fig. 3 is a data flow diagram of an implementation method of cloud computing device management according to the present invention.
Detailed Description
The basic idea of the invention is: the equipment Master receives and stores the equipment information of the cloud computing equipment managed by the equipment Master, and then uploads the equipment information to the equipment Agent; and the network management server acquires and stores the equipment information of the cloud computing equipment through the equipment Agent. Therefore, when the cloud computing equipment is increased or decreased, the equipment Master uploads the updated equipment information of the cloud computing equipment to the equipment Agent, and then the equipment Agent transmits the equipment information to the network management server.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the system for implementing cloud computing device management in the present invention includes a device Master 12, a device Agent 13, and a network management server 14. Wherein,
the equipment Master 12 is used for receiving and storing the equipment information of the cloud computing equipment managed by the equipment Master 12, and then uploading the equipment information to the equipment Agent 13;
the device Agent 13 is used for storing the received device information of the cloud computing device and uploading the device information to the network management server 14;
and the network management server 14 is used for acquiring and storing the device information of the cloud computing device through the device Agent 13.
The system further comprises: the cloud computing device 11 is configured to actively send a registration message to the device Master 12, and receive a response message of successful registration, which is responded by the device Master 12;
The Master 12 is specifically configured to: and registering the cloud computing device 11 according to the device information in the registration message, storing the device information, sending a response message of successful registration to the cloud computing device 11, and bringing the cloud computing device 11 into management.
The cloud computing device 11 is further configured to: sending a heartbeat message to the device Master 12 and replying a response message to the heartbeat message sent by the device Master 12;
the device Master 12, further configured to: sending the heartbeat message to the cloud computing device 11 and replying a response message to the heartbeat message sent by the cloud computing device 11.
Here, the cloud computing device 11 refers to any one of a plurality of cloud computing devices in an implementation system of cloud computing device management.
The Master 12 is specifically configured to: the cloud computing equipment management system is responsible for management and monitoring of the cloud computing equipment 11, receives a registration message which is actively sent to an equipment Master 12 by the cloud computing equipment 11, registers the cloud computing equipment according to equipment information in the registration message, stores the equipment information, returns a response message of successful registration to the cloud computing equipment 11, and brings the cloud computing equipment 11 into management; when the implementation system of the cloud computing device management normally operates, all the cloud computing devices 11 managed by the implementation system are monitored, and when the cloud computing devices are added or deleted, the device Master 12 updates the stored device information.
After the device Agent 13 is started, the device Agent 13 is specifically configured to: sending an equipment information acquisition message to the equipment Master 12, and storing the equipment information sent by the equipment Master 12;
the device Master 12 is specifically configured to: and sending the device information of the cloud computing device managed by the Agent to the device Agent 13.
When the implementation system for cloud computing device management operates normally and the cloud computing devices managed by the device Master 12 are added or deleted, the device Master 12 is specifically configured to: actively sending the updated equipment information to an equipment Agent 13; the device Agent 13 is specifically configured to: updating the stored device information according to the updated device information sent by the device Master 12, and actively uploading the updated device information to the network management server 14; the network management server 14 is specifically configured to: and updating the stored equipment information according to the updated equipment information sent by the equipment Agent 13.
After the network management server 14 is started, the following steps are specifically performed: sending an equipment acquisition (SNMPGET) message to the equipment Agent 13, and storing the equipment information sent by the equipment Agent 13; the device Agent 13 is specifically configured to: after receiving the SNMP GET message, the stored device information is uploaded to the network management server 14.
The implementation method of the cloud computing device management of the invention is shown in fig. 2, and comprises the following steps:
step 201: and the device Master registers the cloud computing device according to the device information in the registration message, stores the device information and brings the cloud computing device into the management of the device Master.
Step 202: and after the equipment Agent is started, sending an equipment information acquisition message to the equipment Master, uploading the equipment information of the cloud computing equipment managed by the equipment Master to the equipment Agent, and storing the received equipment information by the equipment Agent.
Step 203: after the network management server is started, the SNMP GET message is sent to the equipment Agent, the equipment Agent carries the equipment information stored by the equipment Agent in the SNMP GET ACK message and sends the information to the network management server, and the network management server stores the received equipment information.
Step 204: after the implementation system for cloud computing equipment management enters a normal working state, the equipment Master learns that the managed cloud computing equipment is added or deleted, and the equipment Master actively uploads updated equipment information to the equipment Agent; the equipment Agent updates the stored equipment information according to the received updated equipment information, actively uploads the updated equipment information to the network management server, and the network management server updates the stored equipment information according to the received updated equipment information.
The updated device information uploaded to the device Agent by the device Master may be the device full information of all cloud computing devices currently managed by the device Master, that is, on the basis of the device information sent to the device Agent before the device Master, the device information of the cloud computing devices currently added is included, or the device information of the cloud computing devices currently deleted is removed; the device information of the currently added cloud computing device or the device information of the deleted cloud computing device may also be used.
The relevant device information uploaded to the network management server by the device Agent can be the device full information of all cloud computing devices currently managed by the device Master, namely the device information of the cloud computing devices which are added currently is contained or the device information of the cloud computing devices which are deleted currently is removed on the basis of the device information sent to the network management server before the device Agent; the device information of the currently added cloud computing device or the device information of the deleted cloud computing device may also be used.
Based on the above description, the present invention is further described in detail with reference to fig. 3 and the specific embodiment, and the specific data flow is as follows:
step 301: after the cloud computing equipment is started, a registration message is sent to the equipment Master, and the cloud computing equipment is registered according to the equipment information in the registration message.
The method comprises the steps that an IP address of a device Master is configured in the cloud computing device, the cloud computing device is configured to be started and then sends a registration message to the device Master, therefore, the cloud computing device is started and actively establishes a link with the device Master, and after the link is successfully established, the registration message is sent to the device Master according to the configured IP address of the device Master. Wherein the device information includes: device type, machine name, IP address, port number, operating system type, etc. And the cloud computing equipment and the equipment Master are communicated based on TCP/IP.
Step 302: the device Master stores the device information in the registration message.
The Master of the device can be composed of a dual-host device.
Step 303: and the equipment Master returns a response message of successful registration to the cloud computing equipment which sends the registration message, and the cloud computing equipment is brought into the management of the equipment Master.
Step 304: and after the equipment Agent is started, actively sending an equipment information acquisition message to the equipment Master.
And the equipment Agent is configured with the IP address of the equipment Master, and is configured to send an equipment information acquisition message to the equipment Master after being started. The device Agent is a network management Agent of the cloud computing device and is a real network element in a system for realizing cloud computing device management. And after the equipment Agent is started, actively establishing a link with the equipment Master, and after the link is successfully established, sending an equipment information acquisition message to the equipment Master according to the configured IP address of the equipment Master. And the equipment Agent and the equipment Master are communicated based on TCP/IP.
Step 305: and after receiving the equipment information acquisition message, the equipment Master uploads the equipment total information of the cloud computing equipment managed by the equipment Master to the equipment Agent.
The equipment full information refers to the equipment information of all cloud computing equipment currently managed by the equipment Master. The equipment Master uploads the equipment full information to the equipment Agent according to a convention format, wherein the convention format can be as follows: and sequentially arranging and transmitting fields such as the current equipment number, the equipment information of each equipment, reserved fields and the like.
Step 306: and after receiving the full information of the equipment, the equipment Agent stores the information in the memory of the equipment Agent.
Step 307: after the network management server is started, a request for acquiring equipment information is initiated to the equipment Agent through the SNMP Get message.
And the network management server is configured with the IP address of the equipment Agent. After the network management server is started, when a user clicks an equipment Agent item on a network management interface provided by the network management server, the network management server is triggered to send an SNMP Get message to the equipment Agent according to the configured IP address of the equipment Agent. And the equipment Agent and the network management server are communicated based on the SNMP.
Step 308: after receiving the request of the network management server, the equipment Agent reads out the total equipment information from the internal memory of the equipment Agent and sends the information to the network management server through SNMP GETACK messages.
After receiving the SNMP GET message, the equipment Agent synchronizes the total equipment information stored in the memory of the equipment Agent to the network management server through SNMP GET ACK messages.
Step 309: and the network management server stores the total information of the equipment.
And after receiving the SNMP GET ACK message, the network management server stores the full equipment information in the cloud computing equipment list of the network management server. And then, when the user clicks the equipment Agent item on the network management interface provided by the network management server, the network management server reads the equipment information from the cloud computing equipment list and displays the equipment information on the network management interface, and the SNMP GET message does not need to be sent to the equipment Agent to acquire the equipment information.
Step 310: when cloud computing equipment is added or deleted in the cloud computing equipment management implementation system, the equipment Master actively uploads updated equipment full-scale information managed by the equipment Master to the equipment Agent.
Specifically, when cloud computing equipment is added to an implementation system for cloud computing equipment management, the cloud computing equipment firstly sends a registration message to an equipment Master, the equipment Master stores equipment information in the registration message, corresponding equipment information is added on the basis of original equipment full information, and the equipment Master actively uploads the updated equipment full information to an equipment Agent; when the cloud computing equipment is deleted in the cloud computing equipment management implementation system, the equipment Master removes the deleted equipment information of the cloud computing equipment from the original equipment total information, and then uploads the updated equipment total information to the equipment Agent.
After the device Master brings the cloud computing devices into management, the cloud computing devices managed by the device Master are monitored, namely the device Master and all the cloud computing devices managed by the device Master send heartbeat messages to each other, and a party receiving the heartbeat messages replies response messages in time to confirm the link condition and the device condition. The device Master and each cloud computing device confirm the management and managed relationship between the two devices by sending heartbeat messages at regular time, and whether the other side operates normally can be determined by timing heartbeat.
The method specifically comprises the following steps: when a heartbeat message sent by certain cloud computing equipment does not receive a response message replied by the equipment Master, or the frequency of not receiving the response message replied by the equipment Master reaches a set value, determining that a problem occurs in a link between the equipment Master and the equipment Master, after the link is actively broken, reestablishing the link between the equipment Master and sending a registration message to the equipment Master, and the equipment Master registers the cloud computing equipment according to the equipment information in the received registration message, replies the response message to the cloud computing equipment and brings the cloud computing equipment into management;
when the heartbeat message sent by the equipment Master does not receive the response message replied by the corresponding cloud computing equipment, or the frequency of not receiving the response message replied by the corresponding cloud computing equipment reaches a set value, the equipment Master determines that the corresponding cloud computing equipment is not managed, and then removes the equipment information of the cloud computing equipment from the total equipment information managed by the equipment Master.
Step 311: the equipment Agent saves the updated equipment full information uploaded by the equipment Master;
the equipment total information originally stored by the equipment Agent is replaced by the updated equipment total information uploaded by the equipment Master.
Step 312: and the equipment Agent returns a response message of updating the full-scale information of the equipment to the equipment Master.
Step 313: and the equipment Agent actively uploads the updated equipment total information to the network management server through the SNMP Trap message.
Step 314: and the network management server stores the updated full information of the equipment for the user to read.
And after receiving the SNMP Trap message, the network management server replaces the original equipment total information stored in the cloud computing equipment list with the updated equipment total information.
As can be seen from the foregoing description of the embodiments, through the implementation scheme of the present invention, an indefinite number or a number of cloud computing devices that change over time in cloud computing can be managed conveniently. The device Agent and the network management server adopt the current universal SNMP to transmit information, so that the device Agent can be conveniently accessed into various network management servers, and the usability and the expandability are good. After the cloud computing equipment is managed, equipment information such as related alarms and performance statistics about equipment increase and decrease can be conveniently collected.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. An implementation system for cloud computing device management, comprising:
the equipment Master is used for receiving and storing the equipment information of the cloud computing equipment managed by the equipment Master and then uploading the equipment information to the equipment Agent;
the equipment Agent is used for storing the received equipment information of the cloud computing equipment and uploading the equipment information to the network management server;
and the network management server is used for acquiring and storing the equipment information of the cloud computing equipment through the equipment Agent.
2. The system of claim 1, further comprising: a cloud-computing device having a cloud computing device,
the cloud computing equipment is used for actively sending a registration message to the Master;
the equipment Master is specifically used for: and registering the cloud computing equipment according to the equipment information in the registration message and storing the equipment information.
3. The system of claim 2,
the cloud computing device further to: sending heartbeat messages to the equipment Master and replying response messages to the heartbeat messages sent by the equipment Master;
the equipment Master is further used for: and sending the heartbeat message to the cloud computing device and replying a response message to the heartbeat message sent by the cloud computing device.
4. The system of claim 1,
The device Agent is specifically configured to: sending an equipment information acquisition message to the equipment Master, and storing the equipment information sent by the equipment Master; the device Master is specifically configured to: sending equipment information of the cloud computing equipment managed by the cloud computing equipment to an equipment Agent;
and/or the presence of a gas in the gas,
the network management server is specifically configured to: sending a device acquisition message to a device Agent, and storing device information sent by the device Agent; the device Agent is specifically used for: and after receiving the equipment acquisition message, uploading the stored equipment information to a network management server.
5. The system according to any one of claims 1 to 4, wherein when the cloud computing device managed by the device Master is added or deleted,
the device Master is specifically configured to: actively sending the updated equipment information to an equipment Agent;
the device Agent is specifically configured to: updating the stored equipment information according to the updated equipment information sent by the equipment Master, and uploading the updated equipment information to a network management server;
the network management server is specifically configured to: and updating the stored equipment information according to the updated equipment information sent by the equipment Agent.
6. An implementation method for cloud computing device management is characterized by comprising the following steps:
The equipment Master receives and stores the equipment information of the cloud computing equipment managed by the equipment Master, and then uploads the equipment information to the equipment Agent;
and the equipment Agent stores the received equipment information of the cloud computing equipment and uploads the equipment information to the network management server, and the network management server stores the received equipment information.
7. The method according to claim 6, wherein the device Master receives and stores device information of the cloud computing device managed by the device Master, and the method comprises:
when the cloud computing equipment is started or joined, actively sending a registration message to the equipment Master;
and the equipment Master registers the cloud computing equipment according to the equipment information in the registration message and stores the equipment information.
8. The method of claim 7, further comprising:
the equipment Master and the managed cloud computing equipment mutually send heartbeat messages, and a party receiving the heartbeat messages replies response messages.
9. The method of claim 6,
the uploading to the equipment Agent comprises: when the equipment Agent is started, sending an equipment information acquisition message to the equipment Master, and uploading equipment information of the cloud computing equipment managed by the equipment Master to the equipment Agent; and/or the presence of a gas in the gas,
the network management server sends the equipment acquisition message to the equipment Agent, the equipment Agent uploads the stored equipment information to the network management server, and the network management server stores the equipment information sent by the equipment Agent.
10. The method according to any one of claims 6 to 9, wherein when the cloud computing device managed by the device Master is added or deleted, the method specifically includes:
the equipment Master actively sends the updated equipment information to the equipment Agent;
the equipment Agent updates the stored equipment information according to the updated equipment information sent by the equipment Master and uploads the updated equipment information to the network management server;
and the network management server updates the stored equipment information according to the updated equipment information sent by the equipment Agent.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101196805A CN102780570A (en) | 2011-05-10 | 2011-05-10 | Achieving method and system for management of cloud computing devices |
| PCT/CN2011/081135 WO2012151855A1 (en) | 2011-05-10 | 2011-10-21 | Method and system for managing cloud computing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101196805A CN102780570A (en) | 2011-05-10 | 2011-05-10 | Achieving method and system for management of cloud computing devices |
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| CN102780570A true CN102780570A (en) | 2012-11-14 |
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| CN2011101196805A Pending CN102780570A (en) | 2011-05-10 | 2011-05-10 | Achieving method and system for management of cloud computing devices |
Country Status (2)
| Country | Link |
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| CN (1) | CN102780570A (en) |
| WO (1) | WO2012151855A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108880856A (en) * | 2018-05-04 | 2018-11-23 | 江西山水光电科技股份有限公司 | A kind of DCN protection system based on vlan management passage |
| CN110380928A (en) * | 2019-07-12 | 2019-10-25 | 苏州浪潮智能科技有限公司 | A kind of the host monitoring and managing method and device of monitoring system |
| CN110535911A (en) * | 2019-07-30 | 2019-12-03 | 北京大学 | A kind of distribution management method of open wireless network |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018195899A1 (en) * | 2017-04-28 | 2018-11-01 | Beijing Didi Infinity Technology And Development Co., Ltd. | System and method for task scheduling and device management |
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| CN1422040A (en) * | 2001-11-23 | 2003-06-04 | 华为技术有限公司 | A method for implementing remote management of equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Also Published As
| Publication number | Publication date |
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| WO2012151855A1 (en) | 2012-11-15 |
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Application publication date: 20121114 |