CN101827380A - Wireless hotspot recognition system and method - Google Patents
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Abstract
The invention provides a wireless hotspot recognition system and a wireless hotspot recognition method. The system comprises a wireless access point, an access switch and a wireless controller, wherein the wireless access point is accessed with the wireless controller through the access switch; the access switch is used for adding hotspot-related information for recognizing each wireless hotspot into a message which is transmitted to the wireless controller by the wireless access point; and the wireless controller is used for receiving the message including the hotspot-related information so as to analyze the hotspot-related information and recognizing the hotspot where the wireless access point is positioned according to the corresponding relationship between the hotspot-related information and each hotspot.
Description
Technical field
The present invention relates to a kind of wireless hotspot recognition system and method thereof, relate in particular to a kind ofly in framework, the system and method for hotspot is provided by the focus relevant information corresponding with each hotspot that provides by wireless exchange board based on thin AP (WAP (wireless access point)).
Background technology
In recent years, the framework of wireless lan (wlan) evolves to by AC (wireless controller) and the common centralized control system (that is thin AP architecture) that constitutes of AP from the AP (fat AP framework) of single autonomy.The purpose of thin AP architecture is access control (comprise and differentiating and secure communication), mobile management and Radio Frequency Management etc. are separated from single AP, carries out centralized control by AC.In thin AP architecture, generally a kind of mode of Cai Yonging is that AC manages AP by the Capwap agreement.The Capwap agreement is Internet engineering duty group (IETF, Internet Engineering Task Force) a kind of WLAN centralized control architecture frame agreement of Ti Chuing, this agreement makes the AC can centralized control AP, and can unify control and management to channel/power/roaming/security strategy etc. of AP.This Architecture characteristic is that cost is low, and management is simple, the internet security height.
Under thin AP architecture, the mode that AP is registered to AC has following two kinds:
A kind of is static the access, and in this manner, the AP information that manual configuration need insert on AC mainly refers to MAC (media interviews control) address or the SN (sequence number) of AP.When AP by the Capwap agreement when AC registers, AC checks whether the AP MAC Address or the SN that carry in the Capwap protocol massages consistent with the content of manual configuration, unanimity is then permitted access.This shows that static access way is easy to realize accurate management, but shortcoming is the layoutprocedure complexity, is not easy to network design and expansion.
A kind of is dynamic access, in this manner, the AP model that configuration allow to insert on AC only, when AP by the Capwap agreement when AC registers, AC checks whether the AP model of carrying in the Capwap protocol massages is consistent with the content that has been configured, and unanimity then permits inserting.This shows that dynamically access way simply is easy to carry out network design and expansion owing to disposing, but shortcoming is to realize accurate management investigation difficulty when breaking down.
In recent years, the WiFi wireless access technology is more and more universal, and correspondingly, hotspot becomes the focus that people pay close attention to.Hotspot refers generally to provide the place of WiFi wireless access, such as, airport, coffee shop, hotel etc.On the management meaning, focus is a geographical category; Understand technically, the wireless signal overall coverage range of the WAP (wireless access point) of some is focus; Under special circumstances, a WAP (wireless access point) promptly constitutes a focus.
From the operation angle, the interior WAP (wireless access point) of focus is used identical wireless strategy, security strategy and authentication and accounting strategy, and different focuses may use different wireless strategies, security strategy or authentication and accounting strategy.Therefore,, administer and maintain for convenience, need know AP from which focus inserts in WLAN as network operator.
In above-mentioned two kinds of access waies, static mode since manual configuration each AP for information about, therefore can understand the focus that AP inserts.Yet,,, therefore, be difficult to understand the concrete focus that AP inserts owing in AC, do not dispose each AP for information about for dynamic access way.For example, if certain AP breaks down, then bring suitable inconvenience to maintenance because AP One's name is legion and network topology are in extensive range.Therefore, need a kind of system and method that can in based on the framework of thin AP, discern hotspot, so that control the concrete focus that AP inserts, thus effectively administer and maintain.
Summary of the invention
The object of the present invention is to provide a kind of system and method that can in based on the framework of thin AP, discern hotspot, so that control the concrete focus that AP inserts, thus effectively administer and maintain.
According to an aspect of the present invention, provide a kind of wireless hotspot recognition system, described system comprises: WAP (wireless access point), and it inserts wireless controller by access switch; Access switch, it is used for adding the focus relevant information that is used to discern each hotspot at the message of WAP (wireless access point) to the wireless controller transmission; And wireless controller, it is used to receive the message that comprises described focus relevant information, parses described focus relevant information, and identifies the focus at WAP (wireless access point) place according to the corresponding relation of focus relevant information and each focus.
Described wireless hotspot recognition system also can comprise: Dynamic Host Configuration Protocol server is used for realizing via access switch the DynamicHost configuration of WAP (wireless access point), and transmits and carry the message of focus relevant information.
Access switch can add WAP (wireless access point) in the message that wireless controller transmits with the focus relevant information at the registration phase of WAP (wireless access point).
Access switch can confirm that by Dynamic Host Configuration Protocol server the stage of access switch is sent to WAP (wireless access point) with the focus relevant information in WAP (wireless access point), and can at registration phase described focus relevant information be sent to wireless controller by WAP (wireless access point).
Described focus relevant information can be the MAC Address of access switch.
Described system can adopt the VLAN configuration, and each included AP is configured to belong to a focus among the VLAN, in the management tunnel of between WAP (wireless access point) and wireless controller, setting up, for the message that WAP (wireless access point) sends to wireless controller, access switch adds the VLAN label as the focus relevant information therein.
Described message can adopt the form of Capwap agreement, and the focus relevant information can be added among the option82.
Wireless controller can be stored as form with the corresponding relation of each focus and focus relevant information.
When WAP (wireless access point) and access switch support 802.1ab standard, described WAP (wireless access point) can get access to the focus relevant information from access switch by the Link Layer Discovery Protocol of 802.1ab standard
According to a further aspect in the invention, provide a kind of hotspot recognition methods, said method comprising the steps of: the corresponding relation of setting up each hotspot and focus relevant information by wireless controller; By access switch in WAP (wireless access point) in the message that wireless controller transmits, add the described focus relevant information that is used to discern each hotspot; Comprise the message of described focus relevant information by the wireless controller reception, and parse described focus relevant information; Identify the focus at WAP (wireless access point) place according to the described corresponding relation of each hotspot and focus relevant information by wireless controller.
Description of drawings
By the description of carrying out below in conjunction with accompanying drawing to embodiment, above-mentioned and/or other purpose of the present invention and advantage will become apparent, wherein:
Fig. 1 is the block diagram that illustrates according to the wireless hotspot recognition system of the embodiment of the invention;
Fig. 2 is the flow chart that illustrates according to the hotspot recognition methods of the embodiment of the invention;
Fig. 3 illustrates the example of the hotspot identifying schemes of the general plotting according to the present invention; And
Fig. 4 illustrates another example of the hotspot identifying schemes of the general plotting according to the present invention.
Embodiment
Now will be in detail with reference to embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein, identical label refers to identical parts all the time.Below will described embodiment be described, so that explain the present invention by the reference accompanying drawing.
Fig. 1 is the block diagram that illustrates according to the wireless hotspot recognition system of the embodiment of the invention.As shown in Figure 1, comprise according to the wireless hotspot recognition system of the embodiment of the invention: WAP (wireless access point), it inserts wireless controller by access switch; Access switch, it is used for adding the focus relevant information that is used to discern each hotspot at the message of WAP (wireless access point) to the wireless controller transmission; Wireless controller, it is used to receive the message that comprises described focus relevant information, parses described focus relevant information, and identifies the focus at WAP (wireless access point) place according to the corresponding relation of focus relevant information and each focus.In addition, as optional mode, described wireless hotspot recognition system also can comprise DHCP (DHCP) server, is used for realizing via access switch the DynamicHost configuration of WAP (wireless access point), and transmits and carry the message of focus relevant information.
Be described in the example that realizes in the wireless hotspot recognition system shown in Figure 1 according to hotspot recognition methods of the present invention hereinafter with reference to Fig. 2.
Fig. 2 is the flow chart that illustrates according to the hotspot recognition methods of the embodiment of the invention.At step S100, set up the corresponding relation of each hotspot and focus relevant information by wireless controller, described focus relevant information can join WAP (wireless access point) in the message that wireless controller transmits by access switch, is used to discern each focus that WAP (wireless access point) inserts.As example, the focus relevant information can be the MAC Address of access switch, and at this moment, each hotspot and can be set to form as the corresponding relation between the access switch MAC Address of focus relevant information is stored in the wireless controller.Table 1 illustrates the corresponding relation between hotspot and the access switch MAC Address.
Table 1
It should be noted that above focus relevant information that illustrates and concrete form as just example, do not limit the scope of the invention.It will be apparent to those skilled in the art, anyly can be convenient to set up corresponding relation and be suitable for the identification information that access switch adds all can be used as the focus relevant information with each hotspot.For example, under the situation that disposes VLAN (VLAN), each included among VLAN AP can be configured to belong in the focus, at this moment, can set up corresponding relation with the VLAN label as the focus relevant information with each focus.
At step S200, by access switch in WAP (wireless access point) in the message that wireless controller transmits, add the described focus relevant information that is used to discern each hotspot.Then, at step S300, wireless controller receives and comprises the message of described focus relevant information, and parses described focus relevant information.It should be appreciated by those skilled in the art that the above-mentioned step that the focus relevant information is offered wireless controller via access switch is not limited to the message transmissions step under any concrete agreement.That is to say,, all can realize the focus relevant information is sent to by access switch the mode of wireless controller directly or indirectly in different transmit stages.Describe shown in Figure 2 according to step S200 and S300 in the hotspot recognition methods of the embodiment of the invention below with reference to Fig. 3 and Fig. 4.
Fig. 3 and Fig. 4 illustrate the example of the hotspot identifying schemes of the general plotting according to the present invention.In the example shown in Fig. 3, the focus relevant information is added to from WAP (wireless access point) to the message that wireless controller sends by the registration phase of access switch in WAP (wireless access point).In the example shown in Fig. 4, because WAP (wireless access point) need realize via Dynamic Host Configuration Protocol server for the affirmation of switch, and, do not exist from WAP (wireless access point) and send at the registration phase of WAP (wireless access point), arrive the message of wireless controller via access switch.Therefore, in order to the message that wireless controller sends, to add the focus relevant information from WAP (wireless access point), access switch will be in the affirmation stage of WAP (wireless access point) to switch, the focus relevant information is sent to WAP (wireless access point) via Dynamic Host Configuration Protocol server, carries the focus relevant information thereby make WAP (wireless access point) be sent in the message of wireless controller.
Below, specifically describe the hotspot identifying schemes of general plotting according to the present invention with reference to Fig. 3.
In example shown in Figure 3 (a), carry out the registration process of WAP (wireless access point) according to the Capwap agreement to wireless controller, wherein, WAP (wireless access point) inserts wireless controller via access switch, and described access switch supports Capwap to monitor or the Capwap relay function.In above-mentioned registration process,, there are following two kinds of optional modes for the transmission of focus relevant information:
First kind of mode: in step [1], send to access switch by the wireless access message " Capwap find request " of naming a person for a particular job, access switch receives " Capwap finds request " afterwards, add the focus relevant information therein, as example, access switch can add option82 information in message, comprising the access switch MAC Address as the focus relevant information.Then, in step [2], the message " Capwap finds request " that access switch will carry the focus relevant information sends to wireless controller, thereby wireless controller receives the message " Capwap finds request " that comprises described focus relevant information, and therefrom parse the focus relevant information, that is the MAC Address of access switch.In first kind of mode, by step [1] and [2], access switch is sent to wireless controller with the focus relevant information, and wireless controller parses the focus relevant information then.And step [3] is identical with access point registration step of the prior art to [8], realizes the transmission of message " Capwap finds response ", " Capwap joins request " and " Capwap adds response " respectively, does not therefore do and gives unnecessary details.
The second way: in step [5], send to access switch by the wireless access message " Capwap joins request " of naming a person for a particular job, access switch receives " Capwap joins request " afterwards, add the focus relevant information therein, as example, access switch can add option82 information in message, comprising the access switch MAC Address as the focus relevant information.Then, in step [6], the message " Capwap joins request " that access switch will carry the focus relevant information sends to wireless controller, thereby wireless controller receives the message " Capwap joins request " that comprises described focus relevant information, and therefrom parse the focus relevant information, that is the MAC Address of access switch.In the second way, by step [5] and [6], access switch is sent to wireless controller with the focus relevant information, and wireless controller parses the focus relevant information then.And step [1] is identical with access point registration step of the prior art to [8] to [4] and step [7], realizes the transmission of message " Capwap finds request ", " Capwap finds response " and " Capwap adds response " respectively, does not therefore do and gives unnecessary details.
In sum, at two kinds of different hotspot identifying schemes shown in the example (a) of Fig. 3.
In example shown in Figure 3 (b), WAP (wireless access point) and access switch are supported the 802.1ab standard, carry out the registration process of WAP (wireless access point) according to the Capwap agreement to wireless controller, wherein, WAP (wireless access point) (for example gets access to the focus relevant information at the Link Layer Discovery Protocol (LLDP) by the 802.1ab standard from access switch, the MAC Address of access switch, port information etc.) afterwards, directly insert wireless controller, in above-mentioned registration process, for the transmission of focus relevant information, there are following two kinds of optional modes:
First kind of mode: in step [00], WAP (wireless access point) is obtained focus relevant information (for example, the MAC Address of access switch, port information etc.) by LLDP from access switch.Then in step [12], add message " Capwap finds request " to by the name a person for a particular job focus relevant information obtained of wireless access, and it is directly sent to wireless controller, as example, described focus relevant information can be added in the option82 information of message.Thus, wireless controller receives the message " Capwap finds request " that comprises described focus relevant information, and therefrom parses the focus relevant information, that is, and and the MAC Address of access switch, port information etc.In first kind of mode, by step [00] and [12], access switch is sent to wireless controller with the focus relevant information, and wireless controller parses the focus relevant information then.And step [34], [56] are identical with access point registration step of the prior art with [78], realize the transmission of message " Capwap finds response ", " Capwap joins request " and " Capwap adds response " respectively, so do not do and give unnecessary details.
The second way: in step [00], WAP (wireless access point) is obtained focus relevant information (for example, the MAC Address of access switch, port information etc.) by LLDP from access switch.In step [56], add message " Capwap joins request " to by the wireless access focus relevant information of obtaining of naming a person for a particular job, and it is directly sent to wireless controller, as example, described focus relevant information can be added in the option82 information of message.Thus, wireless controller receives the message " Capwap joins request " that comprises described focus relevant information, and therefrom parses the focus relevant information, that is, and and the MAC Address of access switch, port address etc.In the second way, by step [00] and [56], access switch is sent to wireless controller with the focus relevant information, and wireless controller parses the focus relevant information then.And step [12], [34] and step [78] are identical with access point registration step of the prior art, realize the transmission of message " Capwap finds request ", " Capwap finds response " and " Capwap adds response " respectively, therefore do not do and give unnecessary details.
In sum, at two kinds of different hotspot identifying schemes shown in the example (b) of Fig. 3.
Below, specifically describe the hotspot identifying schemes of general plotting according to the present invention with reference to Fig. 4.In the example depicted in fig. 4, comprise Dynamic Host Configuration Protocol server, it is used for realizing via access switch the DynamicHost configuration of WAP (wireless access point).Therefore, access switch is in the affirmation stage of WAP (wireless access point) to switch, the focus relevant information is sent to WAP (wireless access point) via Dynamic Host Configuration Protocol server, then, at the registration phase of WAP (wireless access point), the focus relevant information that wireless access is named a person for a particular job to be provided by access switch is sent to wireless controller by the Capwap protocol massages.In above-mentioned processing, there is dual mode in the processing that access switch adds the focus relevant information, and wireless controller receives the processing of the Capwap protocol massages that carries the focus relevant information and also has dual mode.
At first, the dual mode that access switch adds the focus relevant information will be introduced.
First kind of mode: in step [10], send to access switch by the wireless access message " DHCP discovery " of naming a person for a particular job, access switch receives " DHCP discovery " afterwards, add the focus relevant information therein, as example, access switch can add dhcp option82 information in message, comprising the access switch MAC Address as the focus relevant information.Then, in step [20], the message " DHCP discovery " that access switch will carry the focus relevant information sends to Dynamic Host Configuration Protocol server.In step [30], Dynamic Host Configuration Protocol server receives " DHCP discovery " afterwards, generate " DHCP provides " message, and with among the dhcp option43 of the dhcp option82 information reproduction in " DHCP discovery " in " DHCP provides ", and comprise that with above-mentioned " DHCP provides " of focus relevant information sends to access switch.Then, in step [40], " DHCP provides " that access switch will receive is transmitted to WAP (wireless access point).By the way, the focus relevant information that provided by access switch has been provided WAP (wireless access point).
The second way: in step [50], send to access switch by the wireless access message " DHCP request " of naming a person for a particular job, access switch receives " DHCP request " afterwards, add the focus relevant information therein, as example, access switch can add dhcp option82 information in message, comprising the access switch MAC Address as the focus relevant information.Then, in step [60], the message " DHCP request " that access switch will carry the focus relevant information sends to Dynamic Host Configuration Protocol server.In step [70], Dynamic Host Configuration Protocol server receives " DHCP request " afterwards, generate " DHCP affirmation " message, and with among the dhcp option43 of the dhcp option82 information reproduction in " DHCP request " in " DHCP affirmation ", and comprise that with above-mentioned " the DHCP affirmation " of focus relevant information sends to access switch.Then, in step [80], " DHCP affirmation " that access switch will receive is transmitted to WAP (wireless access point).By the way, the focus relevant information that provided by access switch has been provided WAP (wireless access point).
Below will be presented in after the focus relevant information that WAP (wireless access point) obtains to be provided by access switch by one of above-mentioned dual mode, the dual mode of the Capwap protocol massages that carries the focus relevant information will be provided to wireless controller.
First kind of mode: in step [90], WAP (wireless access point) is initiated related request, and " Capwap the finds request " message that carries the focus relevant information of obtaining is sent to wireless controller.By this step, the wireless access focus relevant information of obtaining of naming a person for a particular job is sent to wireless controller, and wireless controller parses the focus relevant information then.And step [100] is identical with access point registration step of the prior art to [120], realizes the transmission of message " Capwap finds response ", " Capwap joins request " and " Capwap adds response " respectively, does not therefore do and gives unnecessary details.
The second way: in step [110], wireless access " Capwap joins request " message that carries the focus relevant information of obtaining of naming a person for a particular job sends to wireless controller.By this step, the wireless access focus relevant information of obtaining of naming a person for a particular job is sent to wireless controller, and wireless controller parses the focus relevant information then.And step [90] is identical with access point registration step of the prior art to [100] and step [120], realizes the transmission of message " Capwap finds request ", " Capwap finds response " and " Capwap adds response " respectively, does not therefore do and gives unnecessary details.
Therefore, in the example depicted in fig. 4, WAP (wireless access point) is obtained the mode that focus relevant information and wireless controller obtain the focus relevant information two kinds respectively, therefore, can make up and draw four kinds of different hotspot identifying schemes.
Except above-mentioned hotspot identifying schemes with reference to Fig. 3 and Fig. 4 description, also general plotting of the present invention can be applied in the network architecture based on VLAN, wherein, it is up that the management tunnel of different focuses adopts different individual layer VLAN (based on 802.1q) or double layer VLAN (802.1ad).According to the described mode of the step S100 of reference Fig. 2, each included among VLAN AP can be configured to belong in the focus, at this moment, can set up corresponding relation with the VLAN label as the focus relevant information with each focus.In individual layer or double layer VLAN framework, in the management tunnel of between WAP (wireless access point) and wireless controller, setting up, for the message of WAP (wireless access point) to the wireless controller transmission, access switch adds the VLAN label therein, thereby carries the VLAN label as the focus relevant information in the message that wireless controller receives.
By above-mentioned concrete example, wireless controller parses the focus relevant information that is used to discern each focus.It will be understood by those skilled in the art that: above-mentioned concrete example does not provide constraints to the present invention, and the present invention is not subject to above employed communication protocol or corresponding message format yet.Anyly can provide the means of focus relevant information and message transmissions to handle to wireless controller by access switch all to can be applicable to the present invention.
Referring again to Fig. 2, in step S400, wireless controller identifies the focus at WAP (wireless access point) place according to the corresponding relation of focus relevant information and each focus.As example, wireless controller can be searched the table of being stored 1 and discern corresponding focus, also can discern the focus at WAP (wireless access point) place based on the corresponding relation of VLAN label and each focus.
As mentioned above, can be by setting up the corresponding relation of each focus and focus relevant information in advance, and corresponding to each WAP (wireless access point) the focus relevant information is offered wireless controller by access switch in message transmissions, thereby wireless controller can identify the focus at each WAP (wireless access point) place.
According to the present invention, even in the scheme that WAP (wireless access point) dynamically inserts, wireless controller also can identify the focus at each WAP (wireless access point) place easily, has realized more effective and accurate network management and maintenance, be convenient to investigate fault, guaranteed the flexibility of extension of network simultaneously.
Although illustrated and described some embodiments of the present invention, but those skilled in the art will be appreciated that: without departing from the principles and spirit of the present invention, can change these embodiments, wherein, scope of the present invention limits in claim and equivalent thereof.
Claims (11)
1. wireless hotspot recognition system, described system comprises:
WAP (wireless access point), it inserts wireless controller by access switch;
Access switch, it is used for adding the focus relevant information that is used to discern each hotspot at the message of WAP (wireless access point) to the wireless controller transmission; And
Wireless controller, it is used to receive the message that comprises described focus relevant information, parses described focus relevant information, and identifies the focus at WAP (wireless access point) place according to the corresponding relation of focus relevant information and each focus.
2. wireless hotspot recognition system as claimed in claim 1 also comprises:
Dynamic Host Configuration Protocol server is used for realizing via access switch the DynamicHost configuration of WAP (wireless access point), and transmits and carry the message of focus relevant information.
3. the system as claimed in claim 1, wherein: access switch adds WAP (wireless access point) at the registration phase of WAP (wireless access point) in the message that wireless controller transmits with the focus relevant information.
4. system as claimed in claim 2, wherein, access switch confirms by Dynamic Host Configuration Protocol server that in WAP (wireless access point) the stage of access switch is sent to WAP (wireless access point) with the focus relevant information, and at registration phase described focus relevant information is sent to wireless controller by WAP (wireless access point).
5. as the described system of claim 1-4, wherein, described focus relevant information is the MAC Address of access switch.
6. the system as claimed in claim 1, wherein, described system adopts the VLAN configuration, and each included AP is configured to belong to a focus among the VLAN, in the management tunnel of between WAP (wireless access point) and wireless controller, setting up, for the message that WAP (wireless access point) sends to wireless controller, access switch adds the VLAN label as the focus relevant information therein.
7. system as claimed in claim 5, wherein, described message adopts the form of Capwap agreement, and the focus relevant information is added among the option82.
8. the system as claimed in claim 1, wherein, wireless controller is stored as form with the corresponding relation of each focus and focus relevant information.
9. the system as claimed in claim 1, wherein, when WAP (wireless access point) and access switch were supported the 802.1ab standard, described WAP (wireless access point) got access to the focus relevant information by the Link Layer Discovery Protocol of 802.1ab standard from access switch.
10. hotspot recognition methods said method comprising the steps of:
Set up the corresponding relation of each hotspot and focus relevant information by wireless controller;
By access switch in WAP (wireless access point) in the message that wireless controller transmits, add the described focus relevant information that is used to discern each hotspot;
Comprise the message of described focus relevant information by the wireless controller reception, and parse described focus relevant information; And
Identify the focus at WAP (wireless access point) place according to the described corresponding relation of each hotspot and focus relevant information by wireless controller.
11. hotspot recognition methods as claimed in claim 10 also comprises:
Realize the DynamicHost configuration of WAP (wireless access point) by Dynamic Host Configuration Protocol server via access switch, and transmit and carry the message of focus relevant information.
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