CN112104764A - Method and system for classifying DHCP (dynamic host configuration protocol) client - Google Patents
Method and system for classifying DHCP (dynamic host configuration protocol) client Download PDFInfo
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- CN112104764A CN112104764A CN202011004031.6A CN202011004031A CN112104764A CN 112104764 A CN112104764 A CN 112104764A CN 202011004031 A CN202011004031 A CN 202011004031A CN 112104764 A CN112104764 A CN 112104764A
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- dhcp
- dhcp client
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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]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
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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
- H04L61/09—Mapping addresses
- H04L61/10—Mapping addresses of different types
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
Abstract
The invention provides a method and a system for classifying DHCP (dynamic host configuration protocol) clients, and relates to the technical field of DHCP. The DHCP client classification method comprises the following steps: when a DHCP request containing DHCP client classification information is received from a DHCP client, determining to generate a DHCP client IP address; establishing the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address; the DHCP client IP address is assigned. The invention enables a user to flexibly formulate a DCHP client classification strategy according to various conditions, implement DHCP client classification and inquire DHCP client classification information.
Description
Technical Field
The invention relates to the technical field of Dynamic Host Configuration Protocol (DHCP), in particular to a method and a system for classifying DHCP clients.
Background
The DHCP is a dynamic host configuration protocol and is responsible for address allocation of a DHCP client, and mainly comprises three modes of manual allocation, automatic allocation and dynamic allocation of an address allocation strategy.
DHCP is currently very widely used. However, in the process of implementing the present invention, it is found that when a plurality of DHCP servers exist in the same lan, IP addresses allocated by other servers cannot be detected, resulting in IP address collision.
The improved technology configures a static strategy on a DHCP server, and realizes the classification of clients by matching a certain attribute value or a combination of certain attribute values carried in a client DHCP request packet; and the DHCP server initiates inquiry to the remote server according to a certain attribute value or a combination of certain attribute values carried in a client DHCP request packet, and classifies the clients according to the inquiry result. The technology tries to provide a multi-strategy DHCP client classification method and system, and further assigns a differentiated DHCP address allocation strategy, realizes differentiated control on client access authority or service types, and improves the utilization rate of an address pool. And according to the attribute value combination in the client DHCP request packet, the DHCP dynamically identifies and matches the corresponding equipment type fingerprint information, and the clients are classified according to the terminal types. However, this kind of technology needs to configure a policy at the DHCP end, which has low flexibility and high implementation difficulty, and thus it is difficult to solve the above address conflict problem.
On the other hand, the smart home is rapidly emerging, a large number of intelligent terminals including the DHCP clients access the DHCP server, and in the process of implementing the present invention, it is found that the IP of the intelligent terminals in classified management becomes very urgent, while the existing DHCP server does not include information of the DHCP client classification, and the DHCP client cannot query all the IP addresses of the DHCP clients in the same classification.
Disclosure of Invention
In order to solve the problems that the existing DHCP server in the prior art does not contain the information of DHCP client classification and the DHCP client cannot inquire all the IP addresses of the DHCP clients in the same classification, and improve the flexibility of formulating the classification strategy of the DHCP client, the invention provides a method and a system for classifying the DHCP client, which are used for solving the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a method of DHCP client classification, the method comprising:
when receiving a DHCP request containing DHCP client classification information from a DHCP client, a DHCP server determines to generate a DHCP client IP address;
the DHCP server establishes the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address;
the DHCP server assigns a DHCP client IP address.
Further, if the DHCP client classification and the mapping relationship between the DHCP client MAC and the generated IP address already exist and the DHCP client classification is inconsistent with the DHCP client classification data of the original mapping relationship, the DHCP client classification is updated to the mapping relationship between the DHCP client MAC and the generated IP address.
Further, when a DHCP request containing DHCP client classification information is received from the DHCP client, the generation of the DHCP client classification IP address is determined according to the DHCP client classification information.
In another aspect, a method of DHCP client classification, the method comprising:
the DHCP server receives a DHCP request containing the classification information of the DHCP client to be inquired from the DHCP client;
the DHCP server inquires the mapping relation between the DHCP client MAC and the IP address corresponding to the DHCP client classification, and screens out all the information aiming at the same DHCP client classification to be inquired, wherein the information comprises at least one of the following information: IP, MAC, client host name, generate DHCP response information containing all the information;
and the DHCP server sends the DHCP response information to the DHCP client.
In another aspect, a method for DHCP client classification includes:
the DHCP client sends a DHCP request with DHCP client classification information to a DHCP server;
the DHCP client receives a DHCP server DHCP message.
Further, the DHCP client receives information about configuring the DHCP client class by the terminal through the client including the DHCP client.
In another aspect, a method for DHCP client classification includes:
terminal configuration DHCP client classification;
and the terminal sends the information of the DHCP client classification to the client.
In another aspect, a system for DHCP client classification, the system being embedded in a DHCP server, the system comprising:
the message receiving and sending unit is used for receiving and sending the DHCP message containing the classification information of the DHCP client;
and the classification unit is used for establishing and inquiring DHCP client classification and the mapping relation between the DHCP client MAC and the IP address.
Further, the classification unit is further configured to determine to generate a DHCP client classification IP address according to the DHCP client classification information.
In another aspect, a system for DHCP client classification, the system being built in a DHCP client, the system comprising: and the message receiving and sending unit is used for receiving and sending the DHCP message containing the classification information of the DHCP client.
In another aspect, a system for classifying DHCP clients is built in a terminal, and includes:
the classification allocation unit is used for determining the classification of the DHCP client according to the strategy;
and the communication unit is used for communicating with the client to set the classification information of the DHCP client.
The invention provides a method and a system for classifying DHCP (dynamic host configuration protocol) clients. The method has the following beneficial effects:
in the invention: the client side information including the DHCP client side is configured, so that the flexibility of formulating the classification strategy of the DHCP client side is improved; the DHCP client sends the information with the DHCP client classification to the DHCP server, the DHCP server establishes the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address, and the DHCP server stores the information of the DHCP client classification, so that the DHCP client can inquire all the DHCP client IP addresses of the same classification. The invention enables a user to flexibly formulate a DCHP client classification strategy according to various conditions, implement DHCP client classification and inquire DHCP client classification information.
Drawings
FIG. 1 is a flow chart of a first embodiment of the present invention;
FIG. 2 is a block diagram of a fifth embodiment of the present invention;
fig. 3 is a system block diagram of a seventh embodiment of the invention.
Detailed Description
The invention will be further illustrated with reference to the following examples and drawings:
the first embodiment is as follows:
the embodiment of the invention discloses a method for classifying DHCP clients, which comprises the following steps with reference to FIG. 1:
step S11, when the DHCP server receives the DHCP request containing the DHCP client classification information from the DHCP client, the DHCP server determines to generate the IP address of the DHCP client;
step S12, the DHCP server establishes the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address;
in step S13, the DHCP server assigns a DHCP client IP address.
Further, if the DHCP client classification and the mapping relationship between the DHCP client MAC and the generated IP address already exist and the DHCP client classification is inconsistent with the DHCP client classification data of the original mapping relationship, the DHCP client classification is updated to the mapping relationship between the DHCP client MAC and the generated IP address.
Further, when a DHCP request containing DHCP client classification information is received from the DHCP client, the generation of the DHCP client classification IP address is determined according to the DHCP client classification information. This means that the system can perform IP address allocation management according to the client classification policy formulated by the user, which will fundamentally solve the problem of address conflict caused by multiple DHCP servers.
Example two:
the second embodiment of the invention discloses a method for classifying DHCP clients, which comprises the following steps:
the DHCP server receives a DHCP request containing the classification information of the DHCP client to be inquired from the DHCP client; the classification request is an DHCP CLASS request, specifically, the DHCP client can send a DHCP request packet to query the DHCP client classification, Options =53 and Message type =9 (DHCP CLASS), and the DHCP Message field is accompanied by DHCP client type information;
the DHCP server inquires the mapping relation between the DHCP client MAC and the IP address corresponding to the DHCP client classification, and screens out all the information aiming at the same DHCP client classification to be inquired, wherein the information comprises at least one of the following information: IP, MAC, client host name, generate DHCP response information containing all the information;
and the DHCP server sends the DHCP response information to the DHCP client.
Example three:
the third embodiment of the invention discloses a DHCP client classification method, which comprises the following steps:
the DHCP client sends a DHCP request with DHCP client classification information to a DHCP server; this REQUEST includes, but is not limited to, a DHCP REQUEST REQUEST, DHCP CLASS REQUEST, etc.; for the DHCP CLASS request, specifically, the DHCP client may send a DHCP request packet to query the DHCP client classification, Options =53 and Message type =9 (DHCP CLASS), and attach DHCP client type information in the DHCP Message field;
the DHCP client receives a DHCP server DHCP message.
Further, the DHCP client receives information about configuring the DHCP client class by the terminal through the client including the DHCP client.
Example four:
the fourth embodiment of the invention discloses a DHCP client classification method, which comprises the following steps:
terminal configuration DHCP client classification; a user can make a flexible DHCP client classification strategy according to the needs, for example, if the address conflict problem caused by a plurality of DHCP servers is avoided, the client scribing can be classified according to the physical area;
the terminal sends the information of the DHCP client classification to the client, and the terminal and the client can communicate in various communication modes such as Ethernet, WIFI, 4G, 5G, Bluetooth and the like.
Example five:
the fifth embodiment of the present invention discloses a system for classifying DHCP clients, which is embedded in a DHCP server with reference to fig. 2, and the system includes:
a message receiving and sending unit 101, configured to receive and send a DHCP message containing DHCP client classification information;
the classifying unit 102 is configured to establish and query a DHCP client classification and a mapping relationship between a DHCP client MAC and an IP address.
Further, the classifying unit 102 is further configured to determine to generate a DHCP client classification IP address according to the DHCP client classification information. This means that the system can perform IP address allocation management according to the client classification policy formulated by the user, which will fundamentally solve the problem of address conflict caused by multiple DHCP servers.
The system for classifying the DHCP client side comprises a DHCP server, the DHCP client side and a terminal which are connected with each other through a network, wherein the client side comprises the DHCP client side and is in network connection with the DHCP server.
Example six:
the sixth embodiment of the invention discloses a system for classifying DHCP clients, which is arranged in the DHCP clients and comprises: and the message receiving and sending unit is used for receiving and sending the DHCP message containing the classification information of the DHCP client.
Example seven:
the seventh embodiment of the present invention discloses a system for classifying DHCP clients, which is built in a terminal with reference to fig. 3, and the system includes:
a classification allocation unit 202, configured to determine a classification of the DHCP client according to a policy; a user can make a flexible DHCP client classification strategy according to the needs, for example, if the address conflict problem caused by a plurality of DHCP servers is avoided, the client scribing can be classified according to the physical area;
the communication unit 201 is configured to communicate with the client to set classification information of the DHCP client, and the terminal and the client may communicate in various communication modes such as ethernet, WIFI, 4G, 5G, bluetooth, and the like.
In the invention, the client side comprising the DHCP client side is configured with the DHCP client side information, thereby improving the flexibility of formulating the classification strategy of the DHCP client side; the DHCP client sends the information with the DHCP client classification to the DHCP server, the DHCP server establishes the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address, and the DHCP server stores the information of the DHCP client classification, so that the DHCP client can inquire all the DHCP client IP addresses of the same classification. The invention enables a user to flexibly formulate a DCHP client classification strategy according to various conditions, implement DHCP client classification and inquire DHCP client classification information.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (11)
1. A method for DHCP client classification, for a DHCP server, the method comprising:
when a DHCP request containing DHCP client classification information is received from a DHCP client, determining to generate a DHCP client IP address;
establishing the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address;
the DHCP client IP address is assigned.
2. The method for classifying a DHCP client according to claim 1, further comprising: and if the DHCP client classification and the mapping relation between the DHCP client MAC and the generated IP address exist and the DHCP client classification is inconsistent with the DHCP client classification data of the original mapping relation, updating the DHCP client classification into the mapping relation between the DHCP client MAC and the generated IP address.
3. A method for DHCP client classification according to claim 1 or claim 2, wherein the method further comprises: and when a DHCP request containing the DHCP client classification information is received from the DHCP client, determining to generate a DHCP client classification IP address according to the DHCP client classification information.
4. A method for DHCP client classification, for a DHCP server, the method comprising:
receiving a DHCP request containing the classification information of the DHCP client to be inquired from the DHCP client;
inquiring the mapping relation between the DHCP client MAC and the IP address corresponding to the DHCP client classification, and screening out all information aiming at the same DHCP client classification to be inquired, wherein the information comprises at least one of the following information: IP, MAC, client host name, generate DHCP response information containing all the information;
and sending the DHCP response information to a DHCP client.
5. A method for DHCP client classification, the method comprising:
sending a DHCP request with DHCP client classification information to a DHCP server;
a DHCP server DHCP message is received.
6. The method for DHCP client classification according to claim 4, the method further comprising: the DHCP client receives the information of the terminal about configuring the DHCP client classification through the client containing the DHCP client.
7. A method for DHCP client classification, for a terminal, the method comprising:
configuring DHCP client classification;
and sending the information of the DHCP client classification to the client.
8. A system for DHCP client classification, built into a DHCP server, the system comprising:
the message receiving and sending unit is used for receiving and sending the DHCP message containing the classification information of the DHCP client;
and the classification unit is used for establishing and inquiring DHCP client classification and the mapping relation between the DHCP client MAC and the IP address.
9. The system of claim 8, wherein the classifying unit is further configured to determine to generate a DHCP client classification IP address according to the DHCP client classification information.
10. A system for DHCP client classification, the system being built-in to a DHCP client, the system comprising: and the message receiving and sending unit is used for receiving and sending the DHCP message containing the classification information of the DHCP client.
11. A system for DHCP client classification, the system being built in a terminal, the system comprising:
the classification allocation unit is used for determining the classification of the DHCP client according to the strategy;
and the communication unit is used for communicating with the client to set the classification information of the DHCP client.
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