CN101835145B - User information management method based on thin AP - Google Patents
User information management method based on thin AP Download PDFInfo
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- CN101835145B CN101835145B CN 201010135643 CN201010135643A CN101835145B CN 101835145 B CN101835145 B CN 101835145B CN 201010135643 CN201010135643 CN 201010135643 CN 201010135643 A CN201010135643 A CN 201010135643A CN 101835145 B CN101835145 B CN 101835145B
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Abstract
The invention provides a user information management method based on a thin AP, which comprises the steps of: using the AP to monitor DHCP request and response of the user and a DHCP server, and acquiring and storing the corresponding relationship between the IP address of the user and an MAC address and other user information; using the AP to report the information containing the corresponding relationship and other user information to a wireless controller AC; and using the AC to store the corresponding relationship and other user information into a user information list, and sending the confirming message to the AP for responding the information reported by the AP.
Description
Technical field
The present invention relates to the wireless lan (wlan) field, more specifically, relate to a kind of user information management method based on thin AP architecture.
Background technology
The product architecture of WLAN evolves to by wireless controller (AC) and the common centralized control system that constitutes of AP (thin AP) from the AP (fat AP) of single autonomy.The purpose of this evolution is with access control, comprises that discriminating, secure communication, mobile management, Radio Frequency Management etc. separate from single AP, by AC centralized control in addition.The transmission mechanism of so-called " thin " AP is equivalent to the hub in the cable network, in WLAN, ceaselessly receives and transmit data, and any PC that wireless network card is housed all can share the resource of wired local area network even Wide Area Network through AP.In theory, after increasing a wireless aps in the network, the extended network covering diameter also can make and hold the more network equipment in the network exponentially.Each wireless aps all has an Ethernet interface basically, is used to realize wireless with wired being connected.
In the WLAN of thin AP architecture, AC manages AP through management tunnel.After wireless user's associated AP, AP reports AC through management tunnel with user profile.User profile mainly comprises: the Radio configuration information of user media access control (MAC) address, user institute associated AP, user related service set (SSID).AC preserves the user profile (user message table) that AP reports, and is used for wireless user's management.
In the prior art, when AC need confirm the user during related AP, can search user message table according to user's MAC address.If AC only knows IP address, then need to obtain user's MAC address according to IP address search local address analysis protocol (ARP) list item earlier, search user message table according to user's MAC address again.
AC is to wireless user's management, mainly realizes for the inquiry of wireless user data and allows to reach the standard grade operation such as roll off the production line.Wherein, most importantly for the inquiry of wireless user data.The information that AC comes inquiring user through user's MAC (or IP) address, user's information for example comprises: user's IP (or MAC) address, user belong to Radio configuration information, the related information such as SSID of user of the related WTP of the ID, user of network tool platform (WTP).
If known wireless user's MAC Address; Then AC can find out WTPID, Radio ID and the related WLAN ID with the corresponding user of MAC Address from the subscriber's meter (AC last subscriber's meter information shown in following table 1) of self storage, can find information, the information of Radio and the information of SSID of the WTP of wireless user's association like this; And the IP address can only be shown to obtain through inquiring about local ARP.
Table 1
| User's MAC address | The AP sign | The Radio sign | The WLAN sign | The security strategy sign |
| ?[MAC1] | X1 | Y1 | M1 | N1 |
| ?[MAC2] | X2 | Y2 | M2 | N2 |
| ?… | … | … | … | … |
If AC only knows user's IP address, then need inquire about the MAC Address that local ARP shows to obtain the user, inquire about information, the information of Radio and the information of SSID that obtains the related WTP of user through top step then.
In sum, no matter with MAC Address still be the IP address be the relevant information that index comes query wireless user, all need on AC, inquire about the ARP list item.When number of users was big, AC need safeguard that the ARP of a large number of users or neighbours find (ND) list item, the study of processing ARP or ND and aging, and this has increased AC performance pressure, and causes producing in the network a large amount of ARP or ND broadcasting easily.
Summary of the invention
In order to solve above technical problem; The invention provides a kind of user information management method based on thin AP, wherein, AP realizes DHCPSnooping through the message between listen for user and the DHCP on AP; Thereby obtain user profile, and user profile is reported AC by AP about the user.
According to an aspect of the present invention; A kind of user information management method based on thin wireless access point AP is provided; May further comprise the steps: DHCP request and response between AP monitoring users and the Dynamic Host Configuration Protocol server, corresponding relation and other user profile of obtaining and preserving user's IP address and MAC Address; AP is reported to wireless controller AC with said corresponding relation and other user profile; AC is saved in said corresponding relation and other user profile in the user profile tabulation, sends the information that confirmation reports with response AP to AP.
According to an aspect of the present invention, the step of said preservation user profile comprises: AP saves as DHCP Snooping list item with the corresponding relation of user's IP address and MAC Address.
According to an aspect of the present invention, the list item of the user profile of AC tabulation comprises: MAC Address, IP address, Radio sign, WLAN sign and security strategy sign.
According to an aspect of the present invention, the step of monitoring comprises: the user profile of AP recording user when will being transmitted to the user from the DHCP ACK message of Dynamic Host Configuration Protocol server.
According to an aspect of the present invention, AC comes the searching user's information tabulation according to user's IP address as index.
According to an aspect of the present invention, AP and AC communicate according to the CAPWAP agreement.
According to a further aspect in the invention; A kind of wireless user's information management system based on thin wireless access point AP also is provided; Said system comprises AP, Dynamic Host Configuration Protocol server and wireless controller AC, wherein, and the DHCP of AP monitoring users and Dynamic Host Configuration Protocol server request and response; Obtain and preserve corresponding relation and other user profile of user's IP address and MAC Address, and said corresponding relation and other user profile are reported to AC; AC is saved in said corresponding relation and other user profile in the user profile tabulation, sends the information that confirmation reports with response AP to AP.
Description of drawings
Through below in conjunction with the detailed description of accompanying drawing to embodiment, above-mentioned and/or other aspects of the present invention will become clear and be more readily understood, wherein:
Fig. 1 shows according to applied wireless local web frame of the user management method of the embodiment of the invention and operating process;
Shown in Fig. 2 is AP monitoring Dynamic Host Configuration Protocol server and the request between the user and the operating process of response according to the embodiment of the invention;
Shown in Fig. 3 is the message format that AP report of user information is given AC that is used for according to the embodiment of the invention.
Embodiment
User information management method is according to an exemplary embodiment of the present invention described below with reference to accompanying drawings.Fig. 1 shows according to applied wireless local web frame of the user management method of the embodiment of the invention and operating process.As shown in Figure 1, the applied WLAN of the present invention comprises user STA1, wireless access point AP, Dynamic Host Configuration Protocol server and wireless controller AC.User STA1 is connected with AC with Dynamic Host Configuration Protocol server through AP.Dynamic Host Configuration Protocol server and AC can be positioned on the same physical entity.Dynamic Host Configuration Protocol server is user's distributing IP address.
According to exemplary embodiment of the present invention; In order to obtain the corresponding relation between user's IP address and the MAC Address; In step 100, the DHCP of AP monitoring users and Dynamic Host Configuration Protocol server request and response, corresponding relation and other user profile of obtaining and preserving user's IP address and MAC Address.Here, user's IP address can be IPv4 address or IPv6 address.Below will with reference to Fig. 2 illustrated in detail according to an embodiment of the invention AP monitor request and the process of response between Dynamic Host Configuration Protocol server and the user.
With reference to Fig. 2, user STA1 and AP, Dynamic Host Configuration Protocol server are carried out following operation respectively: (1) user STA1 sends DHCP and finds (DHCP Discover) broadcasting, seeks DHCP (DHCPv4 or DHCPv6) server; (2) after AP receives that the DHCP of STA1 finds message, write down the MAC Address of STA1, and this message is sent to Dynamic Host Configuration Protocol server; (3) Dynamic Host Configuration Protocol server receives that DHCP finds after the message; Invite (DHCP Offer) message to send to AP DHCP, invite at DHCP can comprise in the message such as being information such as user STA1 IP address allocated (IPv4 address or IPv6 address), netmask, rental period as response; (4) AP invites DHCP message to be transmitted to STA1; (5) STA1 selects to accept the Dynamic Host Configuration Protocol server IP address allocated, and DHCP request (DHCP Request) message is sent to AP; (6) AP transmits the DHCP request message and gives Dynamic Host Configuration Protocol server; (7) Dynamic Host Configuration Protocol server confirms that with DHCP (DHCP ACK) message is returned to AP as response; (8) AP is transmitted to STA1 with the DHCP confirmation message; Write down the MAC Address of STA1 and the corresponding relation of IP address simultaneously; In addition; AP also writes down other user profile such as the mask of user STA1, gateway, rental period, WLAN-ID, port etc., and corresponding relation and above user profile this locality are saved as DHCP Snooping list item.
Through above operation, the information of corresponding relation that AP will comprise MAC Address and the IP address of STA1 saves as DHCP Snooping list item with other user profile, thereby on AP, has realized the DHCPSnooping process.Can be according to the content in user's needs definition DHCP Snooping list item.Certainly; More than be MAC Address and the corresponding relation of IP address and the example of other user profile that AP obtains the user; Obviously; It will be obvious to those skilled in the art that and to adopt the mode different to come from communicating by letter between user STA1 and the Dynamic Host Configuration Protocol server, to monitor and obtain user profile with said process.
Next, with reference to getting back to Fig. 1.After AP had obtained the corresponding relation between user's IP address and the MAC Address, in step 200, AP was reported to wireless controller AC with said corresponding relation and other user profile.In an embodiment of the present invention, because AP is kept at IP address and MAC Address in the DHCP Snooping list item, therefore, the DHCPSnooping list item that AP will comprise corresponding relation and other user profile reports AC.Can adopt the message of CAPWAP agreement to carry out reporting of information between AP and the AC.Certainly, those skilled in the art will appreciate that AP and AC can adopt other proprietary protocol to report said information.To explain example with reference to Fig. 3 after a while according to employing CAPWAP agreement reporting MAC address of the present invention and IP address and other user profile.
At last, in step 300, after the message that receives from AP, AC is saved in the information about said corresponding relation and other user profile in the message in the user profile tabulation, and sends confirmation to AP.That is to say that the information in the DHCP Snooping list item that AC reports AP is saved in the user profile tabulation.Below table 2 shown in be in the increase of storing on the AC user profile tabulation behind the IP address.Through this table, AC can be other information of index search user with the IP address, for example MAC Address, WLAN ID etc., thus can search information and the SSID information with user-dependent Radio.
Table 2
| User MAC address | IP address | The AP sign | The Radio sign | The WLAN sign | The security strategy sign |
| [MAC1] | IP1 | X1 | ?Y1 | M1 | N1 |
| [MAC2] | IP2 | X2 | ?Y2 | M2 | N2 |
| … | … | … | ?… | … | … |
Shown in Fig. 3 is the message format that AP report of user information is given AC that is used for according to the embodiment of the invention.In the CAPWAP agreement, do not stipulate this form, those skilled in the art can limit the form of message as required voluntarily.
In the message shown in Fig. 3, comprise following: action type, Radio sign, WLAN sign, MAC Address, length, IP address.Wherein, " action type (Op type) " is used to represent the lease expires variation use of IP afterwards of DHCP IP address allocated, and the value of type can comprise interpolation (add 0), deletion (del 1) and revise (modify 2).The Radio at " Radio sign " indication user place.The WLAN at " WLAN sign " indication user place." MAC Address " indication user's MAC Address, it is defaulted as 6 bytes." IP address " indication user's IP address.Through above processing, AC can obtain the user profile about the user more easily, thereby can inquire about better and managing user information.
Can realize that according to user information management method of the present invention following beneficial effect: AC can be according to user source IP address search user list item, one-time positioning user related AP; AC can use user DHCP Snooping list item as Static ARP list item or ND list item, and need not the study of independent maintenance ARP list item or ND list item and wear out reduction AC performance pressure; DHCP Snooping process is accomplished by AP, has reduced AC performance pressure.In addition, can satisfy any networking under the thin AP architecture according to user information management method of the present invention, this is that customer flow is without AC because in the present invention.
Though illustrate and described the present invention with reference to some exemplary embodiments of the present invention; But it should be appreciated by those skilled in the art that; Under the situation of the spirit and scope of the present invention that do not break away from the qualification of claim and equivalent thereof, can make various changes in form and details.
Claims (7)
1. user information management method based on thin wireless access point AP comprises:
(a) request of the DHCP between AP monitoring users and the Dynamic Host Configuration Protocol server and response, corresponding relation and other user profile of obtaining and preserving user's IP address and MAC Address;
(b) AP is reported to wireless controller AC with said corresponding relation and other user profile;
(c) AC is saved in said corresponding relation and other user profile in the user profile tabulation, sends the information that confirmation reports with response AP to AP,
Wherein, said step (a) comprising: AP saves as DHCP Snooping list item with said corresponding relation and other user profile.
2. user information management method as claimed in claim 1, wherein, the list item of the user profile of AC tabulation comprises: MAC Address, IP address, Radio sign, WLAN sign and security strategy sign.
3. user information management method as claimed in claim 1, wherein, said step (a) comprising: AP writes down the said corresponding relation and other user profile of AP when will being transmitted to the user from the DHCP ACK message of Dynamic Host Configuration Protocol server.
4. user information management method as claimed in claim 1, wherein, AC comes the MAC Address and other user profile of searching user's information tabulation to obtain AP according to the IP address of AP as index.
5. user information management method as claimed in claim 1, wherein, AP and AC communicate according to the CAPWAP agreement.
6. the wireless user's information management system based on thin wireless access point AP comprises AP, Dynamic Host Configuration Protocol server and wireless controller AC, wherein,
The DHCP of AP monitoring users and Dynamic Host Configuration Protocol server request and response, corresponding relation and other user profile of obtaining and preserving user's IP address and MAC Address, and said corresponding relation and other user profile be reported to AC;
AC is saved in said corresponding relation and other user profile in the user profile tabulation, sends the information that confirmation reports with response AP to AP,
Wherein, AP saves as DHCP Snooping list item with said corresponding relation and other user profile.
7. wireless user's information management system as claimed in claim 6, wherein, the list item of the user profile of AC tabulation comprises: MAC Address, IP address, Radio sign, WLAN sign and security strategy sign.
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| CN102271388B (en) * | 2011-08-01 | 2017-09-29 | 中兴通讯股份有限公司 | A kind of portable radio device and its electricity saving method |
| CN102333335B (en) * | 2011-10-20 | 2014-01-22 | 华为技术有限公司 | Service recovery method, equipment and system for wireless local area network (WLAN) |
| CN103997546A (en) * | 2013-02-18 | 2014-08-20 | 华为技术有限公司 | Method and system for realizing communication in WLAN |
| CN103209225A (en) * | 2013-04-03 | 2013-07-17 | 北京邮电大学 | Software defined network (SDN) broadcast processing method based on cycle trigger agent |
| CN104601737B (en) * | 2013-10-31 | 2018-05-01 | 上海斐讯数据通信技术有限公司 | The method that AP obtains client ip address |
| CN104023017A (en) * | 2014-06-10 | 2014-09-03 | 北京傲天动联技术股份有限公司 | Method and device for providing data |
| CN104410980B (en) * | 2014-11-06 | 2018-04-17 | 福建三元达科技有限公司 | A kind of user information management method and system based on thin AP |
| CN105227695B (en) * | 2015-10-19 | 2018-07-17 | 华讯方舟科技有限公司 | Access point based on multiple VLAN obtains the method and device of client mac address |
| CN107666662B (en) * | 2016-07-28 | 2020-04-14 | 华为技术有限公司 | Terminal identification method and access point |
| CN106488458B (en) * | 2016-12-21 | 2020-04-24 | 锐捷网络股份有限公司 | Method and device for detecting gateway ARP spoofing |
| CN107579955B (en) * | 2017-08-07 | 2021-07-02 | 台州市吉吉知识产权运营有限公司 | Dynamic host configuration protocol monitoring and protecting method and system |
| CN108260179B (en) * | 2017-09-11 | 2021-03-23 | 新华三技术有限公司 | Access point AP access control method and device |
| CN107911276B (en) * | 2017-12-27 | 2020-08-07 | 迈普通信技术股份有限公司 | Request response method, wireless controller, wireless access point and request response system |
| CN109088824B (en) * | 2018-10-26 | 2021-02-23 | 新华三信息安全技术有限公司 | Message processing method and device |
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| US7801104B2 (en) * | 2006-10-26 | 2010-09-21 | Hitachi, Ltd. | System and method for reducing packet collisions in wireless local area networks |
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