CN102413000A - Online method for clients, DHCP (dynamic host configuration protocol) server and network management system - Google Patents
Online method for clients, DHCP (dynamic host configuration protocol) server and network management system Download PDFInfo
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Abstract
The embodiment of the invention discloses an online method for clients, clients, a DHCP (dynamic host configuration protocol) server and a network management system. The method comprises the following steps: when the DHCP server detects that a first client is in a detached state, logging in a manageable second client, wherein the first client and the second client are located in a same broadcast domain; and triggering the second client to broadcast a compulsory online message containing a device identifier of the first client, so that the first client receiving the compulsory online message starts a plug-and-play process. According to the embodiment of the invention, the problems of high maintenance cost and long elapsed time and the like arising from artificial maintenance can be avoided, and the overall performance of the network management system can be effectively improved.
Description
Technical Field
The invention relates to the technical field of computers and communication, in particular to a client-side online method, a DHCP server and a network management system.
Background
The Dynamic Host Configuration Protocol (DHCP) is a network Protocol of a local area network, works using a User Datagram Protocol (UDP), and mainly has two purposes: an intranet or network service provider is automatically assigned an Internet Protocol (IP) address for interconnection between networks and serves as a means for an intranet administrator to manage all computers.
In the prior art, a network management system at least includes a client supporting a DHCP protocol and a DHCP server, and a plug-and-play technology is usually adopted for a client access network management system, that is, when the client logs in a network for the first time, if it is detected that there is no configuration information, a plug-and-play process is started to obtain the configuration information, and the network management system is accessed, so that the DHCP server can manage the client.
However, in the operation process of the client, when the user deletes the configuration information of the client, such as the route or the IP, or the client receives and configures the wrong configuration information due to misoperation, so that the client is in a offline state due to the wrong configuration information, a maintainer needs to go to a client installation point to reconfigure the client, so that the client can be online, access to a network management system and be managed by a DHCP server.
Disclosure of Invention
The embodiment of the invention provides a method for client online, a client, a DHCP server and a network management system, which avoids the problems of high maintenance cost, long time consumption and the like caused by manual maintenance and effectively improves the overall performance of the network management system.
According to an aspect of an embodiment of the present invention, a method for a client to be online includes:
when a Dynamic Host Configuration Protocol (DHCP) server detects that a first client is in an offline state, logging in a manageable second client which is in the same broadcast domain as the first client;
triggering the second client to broadcast a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
Optionally, the method further comprises: the DHCP server conducts an Internet packet explorer ping test on the first client and determines a communication state between the DHCP server and the first client, wherein the communication state comprises an offline state and a manageable state.
Optionally, the forced online message is an extended DHCPFORCE RENEW message of a dynamic host configuration protocol (dhcp) forced update; the triggering the second client to broadcast a forced online message including the device identifier of the first client includes: and sending a message generation instruction containing the equipment identifier of the first client to the second client, so that the second client generates and broadcasts an expanded DHCP FORCE RENEW message containing the equipment identifier of the first client.
According to another aspect of the embodiment of the present invention, a method for a client to be online includes:
when the Dynamic Host Configuration Protocol (DHCP) server detects that the first client is in an offline state, broadcasting a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
Optionally, the method further comprises: the DHCP server conducts an Internet packet explorer ping test on the first client and determines a communication state between the DHCP server and the first client, wherein the communication state comprises an offline state and a manageable state.
Optionally, the forced online message is an extended DHCPFORCE RENEW message of a dynamic host configuration protocol.
According to another aspect of the embodiments of the present invention, a DHCP server includes a login unit and a trigger unit, wherein:
the login unit is used for logging in a manageable second client in the same broadcast domain as the first client when the Dynamic Host Configuration Protocol (DHCP) server detects that the first client is in an offline state;
the triggering unit is configured to trigger the second client to broadcast a forced online packet including the device identifier of the first client, so that the first client that receives the forced online packet starts a plug-and-play process.
Optionally, the DHCP server further includes: and the testing unit is used for carrying out Internet packet explorer ping test on the first client and determining the communication state between the first client and the first client, wherein the communication state comprises an offline state and a manageable state.
According to another aspect of an embodiment of the present invention, a DHCP server includes: the broadcasting unit is used for broadcasting a forced on-line message containing the equipment identifier of the first client when the Dynamic Host Configuration Protocol (DHCP) server detects that the first client is in an off-line state, so that the first client receiving the forced on-line message starts a plug-and-play process.
Optionally, the DHCP server further includes: and the Ping testing unit is used for performing Internet packet explorer Ping test on the first client and determining the communication state between the first client and the first client, wherein the communication state comprises an offline state and a manageable state.
According to another aspect of an embodiment of the present invention, a network management system includes: the system comprises a first client, a second client and a DHCP server;
when the first client is in an offline state, the DHCP server broadcasts a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process;
or,
when the first client is in an offline state, the DHCP server logs in the second client, and triggers the second client to broadcast a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
When the DHCP server detects that the first client is in the offline state, the DHCP server broadcasts a forced online message containing the equipment identifier of the first client, or logs in a second client in the same broadcast domain as the first client, and triggers the second client to send the forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process to obtain configuration information, thereby realizing online of the first client, and when the first client is in the offline state due to an error of the configuration information, a maintainer does not need to go to a client installation point to reconfigure the client, thereby avoiding the problems of high maintenance cost, long time consumption and the like caused by manual maintenance, and effectively improving the overall performance of the network management system.
Drawings
Fig. 1 is a schematic diagram of a method for a client to get online according to an embodiment of the present invention;
FIG. 2 is another schematic diagram of a method for client to get online according to an embodiment of the present invention;
FIG. 3 is another schematic diagram of a method for client to get online according to an embodiment of the present invention;
FIG. 4 is a diagram of a DHCP server in an embodiment of the present invention;
FIG. 5 is another diagram of a DHCP server in an embodiment of the present invention;
fig. 6 is a schematic diagram of a network management system in an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a client online method, a DHCP server and a network management system, which are used for triggering an offline client to start a plug-and-play process by a forced online message under the condition that the client is offline due to an error of configuration information, acquiring the configuration information and configuring the configuration information, avoiding the problems of high maintenance cost, long time consumption, complicated process and the like caused by manual maintenance, and effectively improving the overall performance of the network management system.
Referring to fig. 1, an embodiment of a method for a client to get online in an embodiment of the present invention is shown, where the method includes:
101. when the DHCP server detects that the first client is in the offline state, logging in a manageable second client which is in the same broadcast domain as the first client;
in the embodiment of the invention, the DHCP server is used for allocating dynamic IP addresses to the client side accessing the network management system and managing the IP addresses of the client side accessing the network management system.
It should be noted that, in the embodiment of the present invention, the clients all refer to clients that support DHCP.
It should be noted that, in the embodiment of the present invention, the offline state refers to a failure state in which a management channel between a certain client and the DHCP server fails to be managed by the DHCP server due to an error in configuration information, where the management channel refers to a logical channel for transmitting information between the client and the DHCP server, and the error in configuration information may be that an IP address of the client is deleted, an IP address is incorrect, a routing configuration parameter is deleted, or a routing configuration parameter is incorrect.
In the embodiment of the invention, when the DHCP server detects that the first client is in the offline state, the second client which is manageable and is in the same broadcast domain as the first client is logged in. Where "first" and "second" are used only to distinguish between two different clients, the second client may be any manageable client within the same broadcast domain as the first client.
102. And triggering the second client to broadcast the forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
In the embodiment of the invention, after the DHCP server logs in the second client, the second client is triggered to broadcast the forced on-line message containing the equipment identifier of the first client, so that the first client receiving the forced on-line message starts a plug-and-play process, acquires the configuration information and realizes the on-line of the first client again.
In the embodiment of the invention, when the first client is in the offline state, the DHCP server logs in the second client which is in the same broadcast domain as the first client and triggers the second client to broadcast the forced online message, so that the first client which receives the forced online message starts the plug-and-play process to acquire the configuration information, the first client is online, maintenance personnel do not need to go to a client installation point to reconfigure the client, the problems of high maintenance cost, long consumed time, complex process and the like caused by manual maintenance are avoided, and the overall performance of the network management system can be effectively improved.
For better understanding of the method of the present invention, please refer to fig. 2, which is another embodiment of the method for online accessing a client in the embodiment of the present invention, including:
201. the DHCP server performs Internet packet explorer ping test on the first client to determine the communication state between the DHCP server and the first client;
in the embodiment of the invention, if the management channel between the DHCP and the first client needs to be detected whether to have a fault, the DHCP server performs an internet packet explorer (ping) test on the first client to determine the communication state between the DHCP server and the first client. Wherein the connected state comprises an out-of-pipe state and a manageable state.
In the embodiment of the present invention, ping is a self-contained executable command in a Windows system, and the ping can be used to detect the connection state of a network, and the ping test is the content in the prior art and is not described herein again.
202. When the DHCP server detects that the first client is in the offline state, logging in a manageable second client which is in the same broadcast domain as the first client;
in the embodiment of the present invention, when the DHCP server detects that the first client is in the offline state, the DHCP server logs in a second manageable client in the same broadcast domain as the first client, specifically: the DHCP server remotely logs in the second client through telnet, and of course, the DHCP server may also log in the second client through other manners.
203. And sending a message generation instruction containing the equipment identifier of the first client to the second client, so that the second client generates and broadcasts an expanded DHCPFORCE RENEW message containing the equipment identifier of the first client, and the first client receiving the expanded DHCP FORCE RENEW message starts a plug-and-play process.
In the embodiment of the invention, the forced on-line message can be an expanded DHCP FORCERENEW message, and is used for forcibly triggering the client receiving the expanded DHCP RENEW message to start a plug and play process. The expanded DHCP FORCE RENEW message can be formed by setting a forced on-line identifier field and an equipment identifier field in an idle field in the original DHCP FORCE RENEW message, wherein the forced on-line identifier field is used for identifying the type of the expanded DHCP FORCE RENEW message, and the equipment identifier field is used for identifying a client terminal which is forced to be on-line.
In the embodiment of the invention, after logging in the second client, the DHCP server sends a message generation instruction containing the device identifier of the first client to the second client, and triggers the second client to generate and broadcast an extended DHCP FORCE RENEW message containing the device identifier of the first client, so that the first client receiving the extended DHCP FORCE RENEW message starts a plug and play process.
In the embodiment of the present invention, the message generation instruction sent by the DHCP server to the second client may be implemented by a command line, and the second client is triggered to generate and broadcast an extended DHCP FORCE RENEW message including the device identifier of the first client. The second client broadcasts the expanded DHCP FORCE RENEW message in the network management system.
It should be noted that, in the embodiment of the present invention, the forced online packet may also be a newly defined packet for triggering the client in the offline state to start the plug-and-play process, and in the embodiment of the present invention, an example of triggering the first client to start the plug-and-play process by using the extended DHCP FORCE RENEW packet is taken as an example for description.
In the embodiment of the invention, after receiving a message, a client analyzes the message, if the message is a DHCP FROCE RENEW message and the message contains a mandatory online identifier field, the message is determined to be an extended DHCP FROCE RENEW message, the client acquires the equipment identifier of a target client carried in the equipment identifier field in the extended DHCP FORCE RENEW message, and if the acquired equipment identifier is consistent with the equipment identifier of the client, the client is determined to be the target client, a plug-and-play process is started, configuration information is acquired for configuration, and online is realized again.
In the embodiment of the invention, when the DHCP server detects that the first client is in the offline state, the DHCP server logs in a second client which is in the same broadcast domain as the first client, and sends a message generation instruction to the second client, so that the second client generates and broadcasts an expanded DHCP FORCE RENEW message containing the equipment identifier of the first client, the first client is triggered to start a plug-and-play process, configuration information is obtained for configuration, a maintenance person does not need to go to a client installation point to reconfigure the client, the problems of high maintenance cost, long consumed time, complicated process and the like caused by manual maintenance are avoided, and the overall performance of the network management system can be effectively improved.
In the embodiments shown in fig. 1 and fig. 2, the DHCP server logs in the second client, and the second client broadcasts the extended DHCP FORCE RENEW message to trigger the first client to start the plug and play process. In the embodiment of the invention, the DHCP server can also directly generate the expanded DHCPFORCE RENEW message to trigger the first client to start the plug and play process. Fig. 3 is a flowchart illustrating a method for a client to go online according to an embodiment of the present invention. The method comprises the following steps:
301. the DHCP server performs Internet packet explorer ping test on the first client to determine the communication state between the DHCP server and the first client;
in the embodiment of the invention, if the management channel between the DHCP and the first client needs to be detected to be in fault, the DHCP server performs an Internet packet explorer (ping) test on the first client to determine the communication state between the DHCP server and the first client, wherein the communication state comprises an out-of-management state and a manageable state.
302. When the DHCP server detects that the first client is in the offline state, the forced online message containing the equipment identifier of the first client is broadcasted, so that the first client receiving the forced online message starts a plug-and-play process.
In the embodiment of the invention, when the DHCP server detects that the first client is in the offline state, the forced online message containing the equipment identifier of the first client is broadcasted, so that the first client receiving the forced online message starts a plug-and-play process, acquires the configuration information for configuration, and realizes the online of the client.
It should be noted that, in the embodiment of the present invention, the forced online message may be a newly defined message for triggering the client in the offline state to start the plug-and-play process, or may be an extended DHCPFORCE RENEW message, and the first client is triggered to start the plug-and-play process by using the extended DHCP FORCE RENEW message. The expanded DHCP FORCE RENEW message can be formed by setting a forced on-line identifier field and an equipment identifier field in an idle field in the original DHCP FORCE RENEW message, wherein the forced on-line identifier field is used for identifying the type of the expanded DHCP FORCE RENEW message, and the equipment identifier field is used for identifying a first client terminal forced to be on-line.
In the embodiment of the invention, after receiving a message, a client analyzes the message, if the message is a DHCP FROCE RENEW message and the message contains a mandatory online identifier field, the message is determined to be an extended DHCP FROCE RENEW message, the client acquires the equipment identifier of a target client carried in the equipment identifier field in the extended DHCP FORCE RENEW message, and if the acquired equipment identifier is consistent with the equipment identifier of the client, the client is determined to be the target client, a plug-and-play process is started, configuration information is acquired for configuration, and online is realized again.
In the embodiment of the invention, when the DHCP server detects that the first client is in the offline state, the expanded DHCP FORCE RENEW message for forcing the first client to be online is sent, the first client is triggered to start the plug-and-play process, the configuration information is acquired, the client is online, the problems of high maintenance cost, long time consumption and the like caused by manual maintenance can be effectively avoided, and the overall performance of the network management system is improved.
Fig. 4 shows an embodiment of a DHCP server according to an embodiment of the present invention. The DHCP server includes a login unit 401 and a trigger unit 402, wherein:
the login unit 401 is configured to log in a manageable second client that is in the same broadcast domain as the first client when the DHCP server detects that the first client is in an offline state;
the triggering unit 402 is configured to trigger the second client to broadcast a forced online packet including the device identifier of the first client, so that the first client that receives the forced online packet starts a plug and play process.
Optionally, in this embodiment of the present invention, the DHCP server may further include a testing unit 403, where the testing unit 403 is configured to perform an internet packet explorer ping test on the first client, and determine a connected state with the first client, where the connected state includes an out-of-management state and a manageable state.
In the embodiment of the present invention, the testing unit 403 performs ping test on the first client, determines the connection state with the first client, and if it is detected that the first client is in the off-line state, the logging unit 401 logs in a manageable second client in the same broadcast domain as the first client, and the triggering unit triggers the second client to broadcast a forced on-line message including the device identifier of the first client, so that the first client receiving the forced on-line message starts a plug-and-play process, obtains configuration information for configuration, and implements on-line of the client, thereby avoiding the problems of high maintenance cost, long consumed time, and the like caused by manual maintenance, reducing maintenance cost, shortening maintenance time, and improving the overall performance of the network management system.
Fig. 5 shows an embodiment of a DHCP server according to an embodiment of the present invention. The DHCP server includes a broadcasting unit 501, where the broadcasting unit 501 is configured to broadcast a forced on-line message including a device identifier of a first client when detecting that the first client is in an off-line state, so that the first client receiving the forced on-line message starts a plug-and-play process.
Optionally, in this embodiment of the present invention, the DHCP server may further include a Ping test unit 502, where the Ping test unit 502 is configured to perform an internet packet explorer Ping test on the first client, and determine a connection status with the first client, where the connection status includes an out-of-management status and a manageable status.
In the embodiment of the present invention, the Ping test unit 502 performs Ping test on the first client to determine the connection state with the first client, and if it is detected that the first client is in the off-line state, the broadcast unit 501 broadcasts the forced on-line message including the device identifier of the first client, so that the first client receiving the forced on-line message starts a plug-and-play process, thereby implementing on-line of the client, effectively avoiding the problems of high maintenance cost, long time consumption, and the like caused by manual maintenance, and improving the overall performance of the network management system.
Referring to fig. 6, an embodiment of a network management system in the embodiment of the present invention includes:
the DHCP server 601, the first client 602, and the second client 603 shown in fig. 4 or fig. 5;
in the embodiment of the present invention, when the first client 602 is in the offline state, the DHCP server 601 broadcasts a forced online message containing the device identifier of the first client, so that the first client 602 receiving the forced online message starts a plug-and-play process; or, when the first client 602 is in the offline state, the DHCP server 601 logs in the second client 603, and triggers the second client 603 to broadcast a forced online message including the device identifier of the first client 601, so that the first client 602 receiving the forced online message starts a plug-and-play process, and the first client can obtain the configuration information again and is in the managed state.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware that is instructed to implement by a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above detailed description is provided for the method for client online, the DHCP server and the network management system, and for those skilled in the art, there may be changes in the specific implementation and application range according to the idea of the embodiment of the present invention.
Claims (11)
1. A method for a client to be online is characterized by comprising the following steps:
when a Dynamic Host Configuration Protocol (DHCP) server detects that a first client is in an offline state, logging in a manageable second client which is in the same broadcast domain as the first client;
triggering the second client to broadcast a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
2. The method of claim 1, further comprising:
the DHCP server conducts an Internet packet explorer ping test on the first client and determines a communication state between the DHCP server and the first client, wherein the communication state comprises an offline state and a manageable state.
3. The method according to claim 1, wherein the forced on-line message is an extended DHCP forced update request message of a dynamic host configuration protocol;
the triggering the second client to broadcast a forced online message including the device identifier of the first client includes:
and sending a message generation instruction containing the equipment identifier of the first client to the second client, so that the second client generates and broadcasts an expanded DHCP FORCE RENEW message containing the equipment identifier of the first client.
4. A method for a client to be online is characterized by comprising the following steps:
when the Dynamic Host Configuration Protocol (DHCP) server detects that the first client is in an offline state, broadcasting a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
5. The method of claim 4, further comprising:
the DHCP server conducts an Internet packet explorer ping test on the first client and determines a communication state between the DHCP server and the first client, wherein the communication state comprises an offline state and a manageable state.
6. The method of claim 4, wherein the forced on-line message is an extended dynamic host configuration protocol forced update DHCP FORCE RENEW message.
7. A Dynamic Host Configuration Protocol (DHCP) server is characterized by comprising a login unit and a trigger unit, wherein:
the login unit is used for logging in a manageable second client in the same broadcast domain as the first client when the Dynamic Host Configuration Protocol (DHCP) server detects that the first client is in an offline state;
the triggering unit is configured to trigger the second client to broadcast a forced online packet including the device identifier of the first client, so that the first client that receives the forced online packet starts a plug-and-play process.
8. The DHCP server of claim 7, wherein the DHCP server further comprises:
and the testing unit is used for carrying out Internet packet explorer ping test on the first client and determining the communication state between the first client and the first client, wherein the communication state comprises an offline state and a manageable state.
9. A dynamic host configuration protocol, DHCP, server, comprising:
the broadcasting unit is used for broadcasting a forced on-line message containing the equipment identifier of the first client when the Dynamic Host Configuration Protocol (DHCP) server detects that the first client is in an off-line state, so that the first client receiving the forced on-line message starts a plug-and-play process.
10. The DHCP server of claim 9, wherein the DHCP server further comprises:
and the Ping testing unit is used for performing Internet packet explorer Ping test on the first client and determining the communication state between the first client and the first client, wherein the communication state comprises an offline state and a manageable state.
11. A network management system, comprising:
a first client, a second client and a DHCP server according to any one of claims 7 to 10;
when the first client is in an offline state, the DHCP server broadcasts a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process;
or,
when the first client is in an offline state, the DHCP server logs in the second client, and triggers the second client to broadcast a forced online message containing the equipment identifier of the first client, so that the first client receiving the forced online message starts a plug-and-play process.
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| CN112671829A (en) * | 2020-11-26 | 2021-04-16 | 新华三技术有限公司 | Equipment online method and device |
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| CN103095722A (en) * | 2013-02-01 | 2013-05-08 | 华为技术有限公司 | Method for updating network security table and network device and dynamic host configuration protocol (DHCP) server |
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| WO2020078428A1 (en) * | 2018-10-17 | 2020-04-23 | 中兴通讯股份有限公司 | Method and device enabling a user to access the internet, broadband remote access server, and storage medium |
| CN109347994A (en) * | 2018-10-19 | 2019-02-15 | Oppo广东移动通信有限公司 | Internet protocol address acquisition methods, device, storage medium and electronic equipment |
| CN109347994B (en) * | 2018-10-19 | 2021-02-09 | Oppo广东移动通信有限公司 | Internet protocol IP address obtaining method and device, storage medium and electronic equipment |
| CN112671829A (en) * | 2020-11-26 | 2021-04-16 | 新华三技术有限公司 | Equipment online method and device |
| CN112671829B (en) * | 2020-11-26 | 2022-07-12 | 新华三技术有限公司 | Equipment online method and device |
| CN112732283A (en) * | 2021-01-21 | 2021-04-30 | 深圳市位元领航科技有限公司 | Method for realizing client-server mode, client and server |
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