CN105049546B - A kind of Dynamic Host Configuration Protocol server is the method and device of client distribution IP address - Google Patents
A kind of Dynamic Host Configuration Protocol server is the method and device of client distribution IP address Download PDFInfo
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- CN105049546B CN105049546B CN201510358866.4A CN201510358866A CN105049546B CN 105049546 B CN105049546 B CN 105049546B CN 201510358866 A CN201510358866 A CN 201510358866A CN 105049546 B CN105049546 B CN 105049546B
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- special identifier
- configuration protocol
- dynamic host
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
- H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5007—Internet protocol [IP] addresses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
Abstract
It is the method and device that client distributes IP address the invention discloses a kind of Dynamic Host Configuration Protocol server, can be authenticated to different types of client and distribute IP address.This method are as follows: the application IP addresses message of Dynamic Host Configuration Protocol server acquisition client, the first field and the second field in the application IP addresses message of the client are parsed, the special identifier symbol for being used to indicate client configuration information carried in the client host title and second field carried in first field is obtained；Obtain the corresponding authentication mode of the client host title and analysis mode, the special identifier symbol is parsed according to the analysis mode, obtain the key of the client carried in the special identifier symbol, the client is authenticated according to the key and the authentication mode, if it is determined that the client is legal, IP address is distributed for the client.
Description
Technical field
It is the method that client distributes IP address the present invention relates to field of communication technology more particularly to a kind of Dynamic Host Configuration Protocol server
And device.
Background technique
Dynamic host configuration protocol (DHCP) includes two functions: first, it is automatic to distribute dynamic network agreement (Internet
Protocol, IP) address is to client；Second, from Dynamic Host Configuration Protocol server transportation protocol configuration parameter to client.
It is defined in RFC2132 agreement in the message that client is sent to server and carries OPTION60 field, it should
OPTION60 field carries the special identifier symbol for being used to indicate client configuration information (such as vendor types), and server is with character
String form parses OPTION60 field, and the format of the corresponding special identifier symbol of different clients is different.In RFC2132 agreement
It is also defined on client and is sent in the message of server and carry OPTION12 field, which carries client
The range that comes into force of Hostname, the title is limited in local domain, i.e. the title is only in the same Virtual Private Network (VPN)
It comes into force, the title can be overlapped in different VPN.
Client sky configuration starting refer to client without it is any saved configuration in the case where start.Zero configuration scheme is
Refer to that client actively obtains configuration file after sky configuration starting.Zero configuration scheme require client sky configuration starting when to
Dynamic Host Configuration Protocol server application IP address obtains simple files from the protocol configuration parameters that server transmits while obtaining IP address
Transport protocol (TFTP) server address perhaps match further according to the tftp server address or the acquisition of network management address by network management address
Set file.
With increasing for the client type and quantity supported in network topology, Dynamic Host Configuration Protocol server is needed to different clients
End is authenticated, and is only the legitimate client distribution IP address that the authentication is passed, but being used to indicate due to different clients
The format of the special identifier symbol of client configuration information is not identical, identical authentication mode can not be used, how to variety classes
Client to be authenticated and distribute IP address be problem to be solved.
Summary of the invention
It is the method and device that client distributes IP address that the embodiment of the present invention, which provides a kind of Dynamic Host Configuration Protocol server, to can
Different types of client is authenticated and distributes IP address.
Specific technical solution provided in an embodiment of the present invention is as follows:
In a first aspect, provide a kind of dynamic host configuration protocol DHCP server be client with distributing network protocol IP
The method of location, comprising:
Dynamic Host Configuration Protocol server obtains the application IP addresses message of client, parses the in the application IP addresses message of the client
One field and the second field are obtained and are carried in the client host title and second field carried in first field
Be used to indicate client configuration information special identifier symbol；
The Dynamic Host Configuration Protocol server obtains the corresponding authentication mode of the client host title and analysis mode, according to described
Analysis mode parses the special identifier symbol, the key of the client carried in the special identifier symbol is obtained, according to institute
It states key and the authentication mode authenticates the client, however, it is determined that the client is legal, for the client point
With IP address.
In implementation, the Dynamic Host Configuration Protocol server is if it is determined that the client is legal, for client distribution IP address, packet
It includes:
The Dynamic Host Configuration Protocol server judges whether carry vlan information in the special identifier symbol, and if it exists, described in lookup
The corresponding IP address pond of vlan information, the IP of the client is distributed in selection from the vlan information corresponding IP address pond
Otherwise IP address is distributed according to the client that is about set to of standard DHCP protocol in address.
In implementation, the Dynamic Host Configuration Protocol server obtains the corresponding authentication mode of the client host title and analysis mode,
Include:
The Dynamic Host Configuration Protocol server determines client-class belonging to the client host title, according to preset client
It is corresponding to obtain client-class belonging to the client host title for the corresponding relationship of classification and authentication mode and analysis mode
Authentication mode and analysis mode.
In implementation, the Dynamic Host Configuration Protocol server obtains the key of the client carried in the special identifier symbol, according to
The key and the authentication mode authenticate the client, comprising:
The Dynamic Host Configuration Protocol server obtains the character of specific position in the special identifier symbol, according to the word of the specific position
The authentication template set in symbol and the authentication mode authenticates the client.
In implementation, after the Dynamic Host Configuration Protocol server distributes IP address for the client, the method also includes:
The Dynamic Host Configuration Protocol server carries the special identifier symbol in the response message for being sent to the client.
Second aspect provides a kind of dynamic host configuration protocol DHCP server, comprising:
First processing module parses the application IP addresses report of the client for obtaining the application IP addresses message of client
The first field and the second field in text obtain the client host title carried in first field and second word
The special identifier symbol for being used to indicate client configuration information carried in section；
Second processing module, for obtaining the corresponding authentication mode of the client host title and analysis mode, according to
The analysis mode parses the special identifier symbol, obtains the key of the client carried in the special identifier symbol, root
The client is authenticated according to the key and the authentication mode, however, it is determined that the client is legal, is the client
End distribution IP address.
In implementation, the Second processing module is specifically used for:
Judge whether carry vlan information in the special identifier symbol, and if it exists, search the corresponding IP of the vlan information
Address pool, the IP address of the client is distributed in selection from the vlan information corresponding IP address pond, otherwise, according to mark
Quasi- DHCP protocol is about set to the client distribution IP address.
In implementation, the Second processing module is specifically used for:
Client-class belonging to the client host title is determined, according to preset client-class and authentication mode
With the corresponding relationship of analysis mode, the corresponding authentication mode reconciliation of client-class belonging to the client host title is obtained
Analysis mode.
In implementation, the Second processing module is specifically used for:
The character for obtaining specific position in the special identifier symbol, according to the character of the specific position and the authentication side
The authentication template set in formula authenticates the client.
In implementation, the Second processing module is also used to:
After distributing IP address for the client, the special mark is carried in the response message for being sent to the client
Know symbol.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, Dynamic Host Configuration Protocol server passes through the address Shen for parsing the client
Please message, obtain being used to indicate of carrying in the client host title and second field carried in first field
The special identifier of client configuration information accords with, and parses special identifier symbol according to the corresponding analysis mode of client host title,
The key for obtaining the client carried in special identifier symbol, according to the key and the corresponding authentication mode of client host title
The client is authenticated, however, it is determined that the client is legal, IP address is distributed for the client, so as to not
Congener client is authenticated and distributes IP address.
Detailed description of the invention
Fig. 1 is the method flow schematic diagram that Dynamic Host Configuration Protocol server is client distribution IP address in the embodiment of the present invention；
Fig. 2 is the relation schematic diagram in the embodiment of the present invention between client host title and authentication mode；
Fig. 3 is that Dynamic Host Configuration Protocol server is client distribution IP address entire flow schematic diagram in the embodiment of the present invention；
Fig. 4 is Dynamic Host Configuration Protocol server structural schematic diagram in the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, as shown in Figure 1, Dynamic Host Configuration Protocol server is that client distributes the method detailed process of IP address such as
Under:
Step 101:DHCP server obtains the application IP addresses message of client, parses the application IP addresses report of the client
The first field and the second field in text obtain the client host title carried in first field and second word
The special identifier symbol for being used to indicate client configuration information carried in section.
Wherein, the client without it is any saved configuration in the case where start or client configures in non-empty
In the case of start.
Specifically, the first field is the OPTION12 field in the application IP addresses message of client, and the second field is client
OPTION60 field in the application IP addresses message at end.
Step 102: the Dynamic Host Configuration Protocol server obtains the corresponding authentication mode of the client host title and analysis mode,
Special identifier symbol is parsed according to the analysis mode, obtains the key of the client carried in special identifier symbol, it is close according to this
Key and the authentication mode authenticate the client, however, it is determined that the client is legal, with distributing IP for the client
Location.
In implementation, Dynamic Host Configuration Protocol server determines client-class belonging to the client host title, according to preset visitor
The corresponding relationship of family end classification and authentication mode and analysis mode obtains client-class belonging to the client host title
Corresponding authentication mode and analysis mode.
In one specific embodiment, it is assumed that there are many client-class, the Typen that is expressed as Type1, Type2 ..., no
Same client-class corresponds to different authentication mode and analysis mode.It can be multiple client in implementation and correspond to identical mirror
Power mode and analysis mode, i.e. multiple client Hostname hostname correspond to the same client-class, each client
Classification corresponds to different authentication mode and analysis mode.As shown in Fig. 2, be N between hostname and Type to 1 relationship, no
It is orthogonal between the same corresponding hostname group of Type, i.e., it is not overlapped, that is to say, that a hosname only belongs to one
It is 1 pair 1 of relationship between Type, Type and authentication mode, is i.e. is corresponded between Type and authentication mode and Type and solution
It is corresponded between analysis mode.
In implementation, Dynamic Host Configuration Protocol server obtains the key of the client carried in the special identifier symbol, according to described
Key and the authentication mode authenticate the client, and detailed process is as follows:
Dynamic Host Configuration Protocol server obtains the character of specific position in special identifier symbol, according to the character of the specific position and
The authentication template set in the authentication mode authenticates the client.
Wherein, the character of specific position is key in special identifier symbol.In implementation, which is client identification.
In specific implementation, Dynamic Host Configuration Protocol server according to state special identifier symbol in specific position character and the authentication mode in
The authentication template of setting to the client authenticated there are many specific implementation, the present invention do not limit specific authentication
Mode.For example, Dynamic Host Configuration Protocol server by special identifier accord in the character of specific position matched with the character in authentication module, if
Unanimously, it is determined that the client is legal, i.e., the authentication is passed, if inconsistent, it is determined that the client is illegal, i.e., authentication is lost
It loses.In another example Dynamic Host Configuration Protocol server is carried out according to character of the algorithm set in authentication template to specific position in special identifier symbol
After transformation, matched with the character in authentication template, if unanimously, it is determined that the client is legal, i.e., the authentication is passed, if not
Unanimously, it is determined that the client is illegal, i.e. failed authentication.In another example Dynamic Host Configuration Protocol server by special identifier accord in certain bits
The character set is compared with the character in authentication module, if comparison result meets preset condition, it is determined that the client is closed
Method, i.e., the authentication is passed, if inconsistent, it is determined that the client is illegal, i.e. failed authentication.It is herein only to enumerate, for it
The mode that it can be authenticated can be applied to the present invention, will not enumerate herein.
In the embodiment of the present invention, after to client failed authentication, the application IP addresses report of the client of failed authentication is abandoned
Text, and in log record failed authentication information.
In implementation, Dynamic Host Configuration Protocol server distinguishes the IP address distribution of vpn environment and non-vpn environment, can be by application IP addresses
OPTION60 field in message carries the vlan information for identifying VPN, to distinguish different VPN, specifically: DHCP service
Device judges in the special identifier symbol with the presence or absence of vlan information, and if it exists, the corresponding IP address pond of the vlan information is searched,
The IP address of the client is distributed in selection from the vlan information corresponding IP address pond, otherwise, according to standard DHCP
Agreement is about set to the client distribution IP address.
Specifically, the character of predeterminated position meets preset condition in special identifier symbol, it is determined that takes in the unique identifier
Band vlan information, the character of the predeterminated position is vlan information, if being unsatisfactory for preset condition, and the character of the predeterminated position
Meet address pool name authority, it is determined that do not carry vlan information in special identifier symbol, but carry address Pool name, this is pre-
If the character of position is address Pool name.
Wherein, select unappropriated IP address as distributing to the visitor from the corresponding IP address pond of the vlan information
The IP address at family end.
Wherein, IP address is distributed according to the client that is about set to of standard DHCP protocol, that is, searching has special identifier
The address pool of the address Pool name of the character instruction of predeterminated position, selects a unappropriated IP address from the address pool in symbol
As the IP address for distributing to the client.
Optionally, Dynamic Host Configuration Protocol server is after client distributes IP address, to take in the response message for being sent to the client
Band OPTION60 field carries and is used to indicate the symbol of special identifier corresponding to the client of distribution IP address.Client receives
After the response message that Dynamic Host Configuration Protocol server is sent, spy corresponding to the client of the distribution IP address carried in the response message is obtained
Whether consistent with the special identifier symbol of the client itself different identifier judges the special identifier obtained symbol, if unanimously, really
The fixed IP address is distributed by legal Dynamic Host Configuration Protocol server, and continuation is interacted with the Dynamic Host Configuration Protocol server；Otherwise, it is determined that the IP
Address is distributed by illegal Dynamic Host Configuration Protocol server, then abandons the response message of Dynamic Host Configuration Protocol server transmission, is terminated and is taken with the DHCP
Interaction between business device.
Optionally, the indicated client configuration information of special identifier symbol further includes the information such as client manufacturer's information.
In one specific embodiment, Dynamic Host Configuration Protocol server carries out the entire flow of IP address distribution as shown in figure 3, specifically such as
Under:
Step 301:DHCP server obtains the application IP addresses message of client, extracts in application IP addresses message
The information carried in OPTION12 field, i.e. client host title hostname, according to preset client host title and
Corresponding relationship between client-class Type obtains the corresponding client-class of the client, and according to preset visitor
Corresponding relationship between family end classification and authentication mode and analysis mode obtains the mirror of the corresponding client-class of the client
Power mode and analysis mode；
Step 302:DHCP server extracts the information carried in the OPTION60 field in application IP addresses message, that is, is used for
The special identifier symbol for indicating client configuration information parses special identifier symbol according to the analysis mode, obtains the special identifier
The key of the client carried in symbol authenticates the client according to the key and the authentication mode of acquisition, that is, sentences
Whether the client of breaking is legal, if it is illegal, then abandons the application IP addresses message, otherwise, turns to go to execute step 303；
Step 303:DHCP server judges whether carry for identifying in the OPTION60 field in application IP addresses message
The vlan information of VPN, and if it exists, execute step 304, otherwise, execute step 305；
Step 304:DHCP server searches the corresponding IP address pond of the vlan information, corresponding from the vlan information
The IP address of the client is distributed in selection in IP address pond；
Step 305:DHCP server distributes IP address according to the client that is about set to of standard DHCP protocol.
Based on the same inventive concept, a kind of Dynamic Host Configuration Protocol server is additionally provided in the embodiment of the present invention, the Dynamic Host Configuration Protocol server
Specific implementation can be found in the description of above method part, and overlaps will not be repeated, as shown in figure 4, the Dynamic Host Configuration Protocol server is main
Include:
First processing module 401 parses the application IP addresses of the client for obtaining the application IP addresses message of client
The first field and the second field in message obtain the client host title and described second carried in first field
The special identifier symbol for being used to indicate client configuration information carried in field；
Second processing module 402, for obtaining the corresponding authentication mode of the client host title and analysis mode, root
The special identifier symbol is parsed according to the analysis mode, obtains the key of the client carried in the special identifier symbol,
The client is authenticated according to the key and the authentication mode, however, it is determined that the client is legal, is the visitor
IP address is distributed at family end.
In implementation, the Second processing module 402 is specifically used for:
Judge whether carry vlan information in the special identifier symbol, and if it exists, search the corresponding IP of the vlan information
Address pool, the IP address of the client is distributed in selection from the vlan information corresponding IP address pond, otherwise, according to mark
Quasi- DHCP protocol is about set to the client distribution IP address.
In implementation, the Second processing module 402 is specifically used for:
Client-class belonging to the client host title is determined, according to preset client-class and authentication mode
With the corresponding relationship of analysis mode, the corresponding authentication mode reconciliation of client-class belonging to the client host title is obtained
Analysis mode.
In implementation, the Second processing module 402 is specifically used for:
The character for obtaining specific position in the special identifier symbol, according to the character of the specific position and the authentication side
The authentication template set in formula authenticates the client.
In implementation, the Second processing module 402 is also used to:
After distributing IP address for the client, the special mark is carried in the response message for being sent to the client
Know symbol.
Based on the above-mentioned technical proposal, in the embodiment of the present invention, Dynamic Host Configuration Protocol server passes through the address Shen for parsing the client
Please message, obtain being used to indicate of carrying in the client host title and second field carried in first field
The special identifier of client configuration information accords with, and parses special identifier symbol according to the corresponding analysis mode of client host title,
The key for obtaining the client carried in special identifier symbol, according to the key and the corresponding authentication mode of client host title
The client is authenticated, however, it is determined that the client is legal, IP address is distributed for the client, so as to not
Congener client is authenticated and distributes IP address.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of dynamic host configuration protocol DHCP server is the method that client distributes network protocol IP address, feature exists
In, comprising:
Dynamic Host Configuration Protocol server obtains the application IP addresses message of client, parses the first word in the application IP addresses message of the client
Section and the second field obtain the use carried in the client host title and second field carried in first field
In the special identifier symbol of instruction client configuration information；
The Dynamic Host Configuration Protocol server determines client-class belonging to the client host title, according to preset client-class
With the corresponding relationship of authentication mode and analysis mode, the corresponding authentication mode of the client host title and parsing side are obtained
Formula parses the special identifier according to the analysis mode and accords with, and obtains the client carried in the special identifier symbol
Key authenticates the client according to the key and the authentication mode, however, it is determined that the client is legal, for institute
State client distribution IP address.
2. the method as described in claim 1, which is characterized in that the Dynamic Host Configuration Protocol server is if it is determined that the client is legal
The client distributes IP address, comprising:
The Dynamic Host Configuration Protocol server judges whether carry vlan information in the special identifier symbol, and if it exists, searches the VLAN letter
Corresponding IP address pond is ceased, the IP address of the client is distributed in selection from the vlan information corresponding IP address pond,
Otherwise, IP address is distributed according to the client that is about set to of standard DHCP protocol.
3. method according to claim 1 or 2, which is characterized in that the Dynamic Host Configuration Protocol server obtains in the special identifier symbol
The key of the client carried, authenticates the client according to the key and the authentication mode, comprising:
The Dynamic Host Configuration Protocol server obtains the character of specific position in special identifier symbol, according to the character of the specific position and
The authentication template set in the authentication mode authenticates the client.
4. method as claimed in claim 3, which is characterized in that the Dynamic Host Configuration Protocol server is that the client distributes IP address
Afterwards, the method also includes:
The Dynamic Host Configuration Protocol server carries the special identifier symbol in the response message for being sent to the client.
5. a kind of dynamic host configuration protocol DHCP server characterized by comprising
First processing module parses in the application IP addresses message of the client for obtaining the application IP addresses message of client
The first field and the second field, obtain in the client host title and second field carried in first field
The special identifier symbol for being used to indicate client configuration information carried；
Second processing module, for determining client-class belonging to the client host title, according to preset client
The corresponding relationship of classification and authentication mode and analysis mode obtains the corresponding authentication mode of the client host title and parsing
Mode parses the special identifier according to the analysis mode and accords with, and obtains the client carried in the special identifier symbol
Key, the client is authenticated according to the key and the authentication mode, however, it is determined that the client is legal, is
The client distributes IP address.
6. server as claimed in claim 5, which is characterized in that the Second processing module is specifically used for:
Judge whether carry vlan information in the special identifier symbol, and if it exists, search the corresponding IP address of the vlan information
Pond, the IP address of the client is distributed in selection from the vlan information corresponding IP address pond, otherwise, according to standard
DHCP protocol is about set to the client distribution IP address.
7. such as server described in claim 5 or 6, which is characterized in that the Second processing module is specifically used for:
The character for obtaining specific position in the special identifier symbol, according in the character of the specific position and the authentication mode
The authentication template of setting authenticates the client.
8. server as claimed in claim 7, which is characterized in that the Second processing module is also used to:
After distributing IP address for the client, the special identifier is carried in the response message for being sent to the client
Symbol.
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| CN105847465A (en) * | 2016-06-07 | 2016-08-10 | 武汉虹信通信技术有限责任公司 | Network connection monitoring method and system for DHCP (dynamic host configuration protocol) |
| CN106357838B (en) * | 2016-09-26 | 2019-08-06 | 新华三信息技术有限公司 | A kind of distribution method and device of IP address |
| CN109194525B (en) * | 2018-10-11 | 2022-03-11 | 迈普通信技术股份有限公司 | Network node configuration method and management node |
| CN109542806B (en) * | 2018-11-27 | 2020-07-24 | 湖南中联重科智能技术有限公司 | Bus data analysis method, device and storage medium |
| CN109582388B (en) * | 2018-11-27 | 2021-09-21 | 阿里巴巴集团控股有限公司 | Parameter configuration method, device and equipment |
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| CN102780790A (en) * | 2012-07-13 | 2012-11-14 | 深圳市龙视传媒有限公司 | Method and system for dynamically allocating IP (Internet Protocol) address |
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