CN103051738B - A kind of dhcp address distribution method and system - Google Patents
A kind of dhcp address distribution method and system Download PDFInfo
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- CN103051738B CN103051738B CN201210529137.7A CN201210529137A CN103051738B CN 103051738 B CN103051738 B CN 103051738B CN 201210529137 A CN201210529137 A CN 201210529137A CN 103051738 B CN103051738 B CN 103051738B
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Abstract
The invention discloses a kind of dhcp address distribution method and system, this dhcp address distribution method comprises: A. router receives and preserves the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page; B., after dhcp client is connected to Dynamic Host Configuration Protocol server by router, dhcp client broadcast transmission DHCP finds packet; C. router is according to the configuration information of steps A, judges that sending this DHCP finds whether the port label of the dhcp client of packet mates with preserved port label, if so, then performs step D; If not, then step e is performed; D. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides packet to this dhcp client response DHCP, obtains IP address to allow the mode of this dhcp client DHCP; E. router abandons this packet, and terminates DHCP session, obtains static ip address to force this dhcp client.Implement technical scheme of the present invention, facilitate the address of Dynamic Host Configuration Protocol server maintenance and management dhcp client.
Description
Technical field
The present invention relates to network field, particularly relates to a kind of dhcp address distribution method and system.
Background technology
DHCP is DynamicHostConfigurationProtocol (DHCP) abbreviation, and it comprises Dynamic Host Configuration Protocol server end and dhcp client.All IP network setting datas are all managed concentratedly by Dynamic Host Configuration Protocol server, and are responsible for the DHCP requirement of process dhcp client, and dhcp client then can use the IP world data of getting off from server-assignment.When we need to dispose a station server in local area network (LAN), adopt DHCP mode to obtain address, each start address all needs again to obtain, and has the rental period to limit, and is therefore unfavorable for the maintenance and management of server etc.
Summary of the invention
The technical problem to be solved in the present invention is, be unfavorable for the maintenance and management defect of server by the address that DHCP mode obtains for the above-mentioned dhcp client of prior art, a kind of dhcp address distribution method and system are provided, are convenient to the address of server maintenance and management dhcp client.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of dhcp address distribution method, comprising:
A. router receives and preserves the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page;
B., after dhcp client is connected to Dynamic Host Configuration Protocol server by router, dhcp client broadcast transmission DHCP finds packet;
C. router is according to the configuration information of described steps A, judges that sending this DHCP finds whether the port label of the dhcp client of packet mates with preserved port label, if so, then performs step D; If not, then step e is performed;
D. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides packet to this dhcp client response DHCP, obtains IP address to allow the mode of this dhcp client DHCP;
E. router abandons this packet, and terminates DHCP session, obtains static ip address to force this dhcp client.
In dhcp address distribution method of the present invention, comprising: in described step D, realize in the following manner allowing the mode of this dhcp client DHCP to obtain IP address:
Dhcp client is resolved the DHCP received and is provided packet, and according to this DHCP provide packet accept Dynamic Host Configuration Protocol server distribute IP address and rental period restricted information.
In dhcp address distribution method of the present invention, comprising: in described step e, realize in the following manner forcing this dhcp client to arrange static ip address:
Receive the static ip address that user is arranged for this dhcp client.
In dhcp address distribution method of the present invention, before described step B, also comprise:
F. router receives and preserves the Dynamic Host Configuration Protocol server information specified by dhcp client that user arranged by WEB page;
Between described step B and described step C, also comprise:
G. router is according to the configuration information of described step F, and this DHCP is found that packet is forwarded to specified Dynamic Host Configuration Protocol server.
In dhcp address distribution method of the present invention, specified Dynamic Host Configuration Protocol server information is mac address information or the IP address of Dynamic Host Configuration Protocol server.
In dhcp address distribution method of the present invention, described step D comprises:
D1. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet;
To received DHCP, D2.DHCP server finds that packet is verified;
D3.DHCP server, when being verified, being responded DHCP to this dhcp client and is provided packet;
D4.DHCP client provides packet to verify to received DHCP;
D5.DHCP client, when being verified, being resolved the DHCP that receives and is provided packet, and according to this DHCP provide packet to accept IP address that Dynamic Host Configuration Protocol server distributes and rental period restricted information.
The present invention also constructs a kind of dhcp address distribution system, comprises Dynamic Host Configuration Protocol server, dhcp client and router, and described router comprises:
First receiver module, for receiving and preserving the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page;
Judge module, for the configuration information received according to described first receiver module, judge that sending this DHCP finds whether the port label of the dhcp client of packet mates with preserved port label, wherein, after dhcp client is connected to Dynamic Host Configuration Protocol server by router, dhcp client broadcast transmission DHCP finds packet;
Executive Module, for when judged result is for coupling, notice Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides packet to this dhcp client response DHCP, obtains IP address to allow the mode of this dhcp client DHCP;
Discard module, for when judged result is not for mating, abandons this packet, and terminating DHCP session, obtains static ip address to force this dhcp client.
In dhcp address distribution system of the present invention, described router also comprises:
Second receiver module, for receiving and preserving the Dynamic Host Configuration Protocol server information specified by dhcp client that user arranged by WEB page;
By this DHCP, forwarding module, for the configuration information received according to described second receiver module, finds that packet is forwarded to specified Dynamic Host Configuration Protocol server.
In dhcp address distribution system of the present invention, judged result for coupling time, dhcp client is resolved the DHCP received and is provided packet, and according to this DHCP provide packet accept Dynamic Host Configuration Protocol server distribution IP address and rental period restricted information.
In dhcp address distribution system of the present invention, when judged result is not for mating, receive the static ip address that user is arranged for this dhcp client.
Implement technical scheme of the present invention, whether the port that user can control dhcp client can automatic acquisition IP address, cannot automatic acquisition IP address if the port of certain dhcp client is arranged to, then force this dhcp client that must static ip address be set, thus can realize binding specific transactions according to particular ip address, facilitate the address of Dynamic Host Configuration Protocol server maintenance and management dhcp client.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the flow chart of dhcp address distribution method embodiment one of the present invention;
Fig. 2 is the flow chart of dhcp address distribution method embodiment two of the present invention;
Fig. 3 is the flow chart of step D embodiment one in dhcp address distribution method of the present invention;
Fig. 4 is the logic diagram of dhcp address distribution system embodiment one of the present invention.
Embodiment
Fig. 1 is the flow chart of dhcp address distribution method embodiment one of the present invention, and this dhcp address distribution method comprises:
A. router receives and preserves the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page, in this step, user to the port marking of dhcp client, arranges the dhcp client port of static ip address in linux kernel with the dhcp client port and pressure of distinguishing energy automatic acquisition IP address;
B. after dhcp client is connected to Dynamic Host Configuration Protocol server by router, dhcp client broadcast transmission DHCP finds (Discover) packet, in this step, dhcp client is when start, or when restarting network card, can send DHCP automatically and find that packet is to the every portion computer in net territory, and other netting in territory does not provide the computer (Dynamic Host Configuration Protocol server) of DHCP service, can be abandoned by this package and not respond automatically after receiving this package;
C. router is according to the configuration information of described steps A, judges that sending this DHCP finds whether the port label of the dhcp client of packet mates with preserved port label, if so, then performs step D; If not, then step e is performed;
D. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides (Offer) packet to this dhcp client response DHCP, IP address is obtained to allow the mode of this dhcp client DHCP, such as, realize in the following manner allowing the mode of this dhcp client DHCP to obtain IP address: dhcp client is resolved the DHCP received and provided packet, and according to this DHCP provide packet accept Dynamic Host Configuration Protocol server distribute IP address and rental period restricted information;
E. router abandons this packet, and terminate DHCP session, to force this dhcp client to obtain static ip address, such as, realize in the following manner forcing this dhcp client to arrange static ip address: receive the static ip address that user is arranged for this dhcp client.
Implement this technical scheme, whether the port that user can control dhcp client can automatic acquisition IP address, cannot automatic acquisition IP address if the port of certain dhcp client is arranged to, then force this dhcp client that must static ip address be set, thus can realize binding specific transactions according to particular ip address, facilitate the address of Dynamic Host Configuration Protocol server maintenance and management dhcp client.
Fig. 2 is the flow chart of dhcp address distribution method embodiment two of the present invention, the dhcp address distribution method of this embodiment is applicable to the situation that there is multiple stage Dynamic Host Configuration Protocol server in network, in order to alleviate the burden of network operation and management, the present embodiment improves dhcp address distribution method again on the basis of the embodiment shown in Fig. 1, namely, compare the embodiment shown in Fig. 1, difference is only: one, before steps A, also comprise: F. router receives and preserves the Dynamic Host Configuration Protocol server information specified by dhcp client that user arranged by WEB page.Described herein, although shown in this embodiment be step F before steps A, in other embodiments, step F also can after step, as long as ensure that step F is just passable before step B; Two, between step B and step C, also comprise: this DHCP, according to the configuration information of step F, is found that packet is forwarded to specified Dynamic Host Configuration Protocol server by G. router.By implementing the technical scheme of this embodiment, specifying trusted Dynamic Host Configuration Protocol server by dhcp client, the burden of network operation and management can be alleviated.
Fig. 3 is the flow chart of step D embodiment one in dhcp address distribution method of the present invention, and when router judges that sending this DHCP finds that the port label of the dhcp client of packet is mated with preserved port label, step D can specifically comprise:
D1. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet;
To received DHCP, D2.DHCP server finds that packet is verified;
D3.DHCP server, when being verified, being responded DHCP to this dhcp client and is provided packet;
D4.DHCP client provides packet to verify to received DHCP;
D5.DHCP client, when being verified, being resolved the DHCP that receives and is provided packet, and according to this DHCP provide packet to accept IP address that Dynamic Host Configuration Protocol server distributes and rental period restricted information.
Implement the technical scheme of this embodiment, the communication security between Dynamic Host Configuration Protocol server and dhcp client can be ensured.
Fig. 4 is the logic diagram of dhcp address distribution system embodiment one of the present invention, this dhcp address distribution system comprises the Dynamic Host Configuration Protocol server 20, router one 0 and the dhcp client 30 that are connected, described hereinly be, although illustrate only a Dynamic Host Configuration Protocol server 20 and a dhcp client 30 in figure, the present invention does not limit the quantity of Dynamic Host Configuration Protocol server and dhcp client.And, in this embodiment, router one 0 comprises: the first receiver module 11, judge module 12, Executive Module 13 and discard module 14, and wherein, the first receiver module 11 is for receiving and preserving the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page; The configuration information of judge module 12 for receiving according to described first receiver module, judge that sending this DHCP finds the dhcp client of packet (such as, dhcp client 30) port label whether mate with preserved port label, wherein, when dhcp client is connected to Dynamic Host Configuration Protocol server (such as by router, Dynamic Host Configuration Protocol server 20) after, dhcp client broadcast transmission DHCP finds packet; Executive Module 13 is for when judged result is for coupling, notice Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides packet to this dhcp client response DHCP, IP address is obtained to allow the mode of this dhcp client DHCP, such as, dhcp client is resolved the DHCP received and is provided packet, and according to this DHCP provide packet accept Dynamic Host Configuration Protocol server distribute IP address and rental period restricted information; Discard module 14, for when judged result is not for mating, abandons this packet, and terminating DHCP session, to force this dhcp client to obtain static ip address, such as, receives the static ip address that user is arranged for this dhcp client.
In a preferred embodiment of dhcp address distribution system of the present invention, when Dynamic Host Configuration Protocol server quantity is in a network multiple, router also comprises the second receiver module and forwarding module, wherein, the second receiver module is for receiving and preserving the Dynamic Host Configuration Protocol server information specified by dhcp client that user arranged by WEB page; Forwarding module is used for the configuration information according to described second receiver module, and this DHCP is found that packet is forwarded to specified Dynamic Host Configuration Protocol server.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present invention.
Claims (8)
1. a dhcp address distribution method, is characterized in that, comprises the following steps:
A. router receives and preserves the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page;
B., after dhcp client is connected to Dynamic Host Configuration Protocol server by router, dhcp client broadcast transmission DHCP finds packet;
C. router is according to the configuration information of described steps A, judges that sending this DHCP finds whether the port label of the dhcp client of packet mates with preserved port label, if so, then performs step D; If not, then step e is performed;
D. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides packet to this dhcp client response DHCP, obtains IP address to allow the mode of this dhcp client DHCP;
E. router abandons this packet, and terminates DHCP session, and, receive the static ip address that user is arranged for this dhcp client, obtain static ip address to force this dhcp client.
2. dhcp address distribution method according to claim 1, is characterized in that, comprising: in described step D, realizes in the following manner allowing the mode of this dhcp client DHCP to obtain IP address:
Dhcp client is resolved the DHCP received and is provided packet, and according to this DHCP provide packet accept Dynamic Host Configuration Protocol server distribute IP address and rental period restricted information.
3. dhcp address distribution method according to claim 1, is characterized in that, before described step B, also comprises:
F. router receives and preserves the Dynamic Host Configuration Protocol server information specified by dhcp client that user arranged by WEB page;
Between described step B and described step C, also comprise:
G. router is according to the configuration information of described step F, and this DHCP is found that packet is forwarded to specified Dynamic Host Configuration Protocol server.
4. dhcp address distribution method according to claim 3, is characterized in that, specified Dynamic Host Configuration Protocol server information is mac address information or the IP address of Dynamic Host Configuration Protocol server.
5. dhcp address distribution method according to claim 1, is characterized in that, described step D comprises:
D1. router advertisement Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet;
To received DHCP, D2.DHCP server finds that packet is verified;
D3.DHCP server, when being verified, being responded DHCP to this dhcp client and is provided packet;
D4.DHCP client provides packet to verify to received DHCP;
D5.DHCP client, when being verified, being resolved the DHCP that receives and is provided packet, and according to this DHCP provide packet to accept IP address that Dynamic Host Configuration Protocol server distributes and rental period restricted information.
6. a dhcp address distribution system, comprises Dynamic Host Configuration Protocol server, dhcp client and router, it is characterized in that, described router comprises:
First receiver module, for receiving and preserving the port label of the dhcp client of the permission automatic acquisition IP address that user is arranged by WEB page;
Judge module, for the configuration information received according to described first receiver module, judge that sending DHCP finds whether the port label of the dhcp client of packet mates with preserved port label, wherein, after dhcp client is connected to Dynamic Host Configuration Protocol server by router, dhcp client broadcast transmission DHCP finds packet;
Executive Module, for when judged result is for coupling, notice Dynamic Host Configuration Protocol server is preserved this DHCP and is found packet, and Dynamic Host Configuration Protocol server provides packet to this dhcp client response DHCP, obtains IP address to allow the mode of this dhcp client DHCP;
Discard module, for when judged result is not for mating, abandons this packet, and terminating DHCP session, to receive the static ip address that user is arranged for this dhcp client, forces this dhcp client to obtain static ip address.
7. dhcp address distribution system according to claim 6, is characterized in that, described router also comprises:
Second receiver module, for receiving and preserving the Dynamic Host Configuration Protocol server information specified by dhcp client that user arranged by WEB page;
By this DHCP, forwarding module, for the configuration information received according to described second receiver module, finds that packet is forwarded to specified Dynamic Host Configuration Protocol server.
8. dhcp address distribution system according to claim 6, it is characterized in that, judged result for coupling time, dhcp client is resolved the DHCP received and is provided packet, and according to this DHCP provide packet accept Dynamic Host Configuration Protocol server distribution IP address and rental period restricted information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210529137.7A CN103051738B (en) | 2012-12-10 | 2012-12-10 | A kind of dhcp address distribution method and system |
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| CN201210529137.7A CN103051738B (en) | 2012-12-10 | 2012-12-10 | A kind of dhcp address distribution method and system |
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| CN103051738A CN103051738A (en) | 2013-04-17 |
| CN103051738B true CN103051738B (en) | 2016-01-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106713052A (en) * | 2017-02-16 | 2017-05-24 | 郑州云海信息技术有限公司 | Operation and maintenance management method and device of server |
| CN106790701A (en) * | 2017-02-23 | 2017-05-31 | 郑州云海信息技术有限公司 | It is a kind of to orient the method and device that Dynamic Host Configuration Protocol server is specified in request |
| CN107483652A (en) * | 2017-08-18 | 2017-12-15 | 惠州高盛达科技有限公司 | The method of router its homepage of domain name access under wireless bridging pattern |
| CN107592243B (en) * | 2017-10-23 | 2020-12-22 | 王蕴卓 | Method and device for verifying static binding function of router |
| CN107809498B (en) * | 2017-10-26 | 2021-02-02 | 迈普通信技术股份有限公司 | Communication method and communication device |
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| US7002956B2 (en) * | 2001-07-05 | 2006-02-21 | International Business Machines Corporation | Network addressing method and system for localizing access to network resources in a computer network |
| ES2315579T3 (en) * | 2004-01-23 | 2009-04-01 | Siemens Aktiengesellschaft | PROCEDURE FOR THE ASSIGNMENT OF AN IP ADDRESS TO A TEAM. |
| CN100499672C (en) * | 2005-10-20 | 2009-06-10 | 华为技术有限公司 | Method for distributing service based on terminal physical position |
| CN101483676B (en) * | 2006-02-17 | 2011-04-13 | 华为技术有限公司 | Network for securing special line user to access to network |
| US8249081B2 (en) * | 2006-09-29 | 2012-08-21 | Array Networks, Inc. | Dynamic virtual private network (VPN) resource provisioning using a dynamic host configuration protocol (DHCP) server, a domain name system (DNS) and/or static IP assignment |
| CN101115063B (en) * | 2007-08-30 | 2011-11-30 | 中兴通讯股份有限公司 | Method for prevent MAC address/IP address spuriousness of broadband access equipment |
| CN101179583B (en) * | 2007-12-17 | 2010-12-08 | 杭州华三通信技术有限公司 | Method and equipment preventing user counterfeit internet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101150598A (en) * | 2005-11-02 | 2008-03-26 | 中兴通讯股份有限公司 | Method for CDMA system to allocate fixing IP address for users |
| CN1859407A (en) * | 2006-02-17 | 2006-11-08 | 华为技术有限公司 | A method to guarantee private line users to access the Internet |
| CN1859445A (en) * | 2006-03-15 | 2006-11-08 | 华为技术有限公司 | Mobile terminal IP address distributing method |
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