CN104349511A - Distribution method and apparatus of AP addresses in WLAN - Google Patents

Distribution method and apparatus of AP addresses in WLAN Download PDF

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Publication number
CN104349511A
CN104349511A CN201310330350.XA CN201310330350A CN104349511A CN 104349511 A CN104349511 A CN 104349511A CN 201310330350 A CN201310330350 A CN 201310330350A CN 104349511 A CN104349511 A CN 104349511A
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China
Prior art keywords
address
registered
dhcp message
attribute information
sending
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CN201310330350.XA
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CN104349511B (en
Inventor
高波
张坚平
王懿
潘毅明
黄国瑾
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN201310330350.XA priority Critical patent/CN104349511B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • H04L61/5014—Internet protocol [IP] addresses using dynamic host configuration protocol [DHCP] or bootstrap protocol [BOOTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • 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 relates to a distribution method and apparatus of AP addresses in a WLAN. The method comprises the following steps: synchronizing configuration data of registered APs; receiving DHCP packets forwarded by BASs, the packets bearing attribute information of APs sending the DHCP packets; comparing the attribute information of the APs sending the DHCP packets with the attribute information in the configuration data; if the configuration data comprises the attribute information of the APs sending the DHCP packets, determining that the APs sending the DHCP packets are the registered APs, and otherwise, determining that the APs sending the DHCP packets are unregistered APs; if the APs sending the DHCP packets are the registered APs, obtaining information of ACs corresponding to the APs sending the DHCP packets from the configuration data; and distributing the addresses to the APs sending the DHCP packets, and issuing the obtained AC information. According to the invention, VLAN resources can be reduced, maintenance difficulties are lowered, the APs can be flexibly accessed to specific ACs, and the utilization rate of the ACs is improved.

Description

The distribution method of AP address and device in wlan network
Technical field
The disclosure relates to WLAN(Wireless Local Area Network, WLAN (wireless local area network)), especially, relate to distribution method and the AP(Access Point of AP address in a kind of wlan network, access point) address distributing device.
Background technology
Several functions gathers by traditional WAP (wireless access point), such as, the certification of physical layer, link layer, ciphering user data, user, QoS(Quality of Service, service quality), security strategy, user management and other application level functions etc.This kind of WAP (wireless access point) is commonly called as " fat " AP.Be characterized in flexible configuration, installation is simple, cost performance is high, but separate between each AP, without the coordination system, user terminal across can not seamless roam between AP, AP each other cannot perception, can not accomplish that transmitting power is coordinated mutually, therefore cannot be applicable to the place that user density high, multiple AP such as to cover continuously at the circumstance complication.
Produce centralized control type AC(Access controller, access controller for this reason)+AP(is commonly called as " thin " AP, hereinafter referred to as AP) equipment, coordinated by AC and Lightweight AP, realize the function of " fat " AP equipment.Partial function on " fat " AP by move to AC to realize.Its maximum advantage is that management is simplified, and the network management platform of wlan device only need manage Centralized Controller AC, just indirectly can manage Lightweight AP, and this significantly can alleviate the pressure of backstage (as network management platform).
Current operator substantially all adopts centralized control type AC+AP framework, and major part adopts card insert type Large Copacity AC equipment to carry out networking, AC adopts to concentrate to dispose and other hangs BAS(Broadband Access Server, BAS Broadband Access Server) method, as shown in Figure 1.
The working mechanism of centralized control type AC+AP framework is: initiate DHCP(Dynamic Host Configuration Protocol after AP powers on, DHCP) request, BAS is according to the VLAN(Virtual Local Area Network of the AP first line of a couplet, VLAN) ID identify belonging to AC equipment, the DHCP request message repeating of AP can be given corresponding AC equipment by BAS, AC carries out alternately according to DHCP flow process and AP, issue Option43 attribute to legal AP allocation address (this attribute contains master, standby AC address), AP sets up tunnel according to the address of the main AC obtained and AC, AP has just normally worked, it is to be noted, some producer AC does not test with regard to allocation address to AP.
Because BAS needs to identify AP and corresponding AC equipment according to the VLAN ID of the AP first line of a couplet, therefore the AP corresponding to different AC needs to distribute different VLAN, due to operator's operation is full-service, the VLAN resource-constrained of Access Network, the VLAN number distributing to WLAN business is few, this just causes the other AC limited amount hanging BAS, namely, AP limited amount, result in wlan network capacity constraint, have impact on the extensive development of wlan network, finally have impact on the covering of wlan network and the construction of wireless city; Meanwhile, the VLAN of the AP first line of a couplet that different AC is corresponding is different, brings difficulty, add workload to the configure and maintenance of Access Network VLAN and BAS, and easily causes and make mistakes.
Summary of the invention
The disclosure proposes new technical scheme in view of at least one in above problem.
The disclosure provides the distribution method of AP address in a kind of wlan network in one, and it can be saved VLAN resource, reduce maintenance difficulties, and improves the utilance of AC.
The disclosure provides a kind of AP address distributing device on the other hand at it, and it can be saved VLAN resource, reduce maintenance difficulties, and improves the utilance of AC.
According to the disclosure, the distribution method of AP address in a kind of wlan network is provided, comprises:
The configuration data of synchronous registered access point AP, configuration data comprises the attribute information of registered AP and the corresponding relation of corresponding AC information;
Receive the DHCP message that Service Gateway forwards, in DHCP message, carrying sends the attribute information of the AP of DHCP message;
The attribute information of registered AP in the attribute information of the AP of transmission DHCP message and configuration data is compared;
If comprise the attribute information of the AP sending DHCP message in configuration data, then determine that the AP sending DPCH message is registered AP, otherwise, be defined as unregistered AP;
If the AP sending DPCH message is registered AP, then obtain the AC information corresponding with the AP sending DHCP message in self-configuring data;
For sending the AP allocation address of DHCP message, issue the AC information of acquisition simultaneously.
In embodiments more of the present disclosure, the attribute information of registered AP comprises MAC Address and/or the sequence number of AP, and AC information comprises the address list of AC.
In embodiments more of the present disclosure, the step that the attribute information of registered AP in the attribute information of the AP of transmission DHCP message and configuration data is compared is specially:
Utilize the MAC Address of two AP to compare or utilize the sequence number of two AP to compare.
In embodiments more of the present disclosure, the method also comprises:
If sending the AP of DHCP message is unregistered AP, then abandons DHCP message or distribute assigned address for unregistered AP.
According to the disclosure, additionally provide a kind of AP address distributing device, comprising:
Configuration data lock unit, for the configuration data of synchronous registered access point AP, configuration data comprises the attribute information of registered AP and the corresponding relation of corresponding AC information;
Message receiving element, for receiving the DHCP message that Service Gateway forwards, in DHCP message, carrying sends the attribute information of the AP of DHCP message;
Comparing unit, comparing for the attribute information of registered AP in attribute information and the configuration data of the AP by sending DHCP message, if comprise the attribute information of the AP sending DHCP message in configuration data, then determining that the AP of transmission DPCH message is registered AP, otherwise, be defined as unregistered AP;
AC information acquisition unit, if be registered AP for the AP sending DPCH message, then obtains the AC information corresponding with the AP sending DHCP message in self-configuring data;
Allocation unit, for the AP allocation address for sending DHCP message, issues the AC information of acquisition simultaneously.
In embodiments more of the present disclosure, the attribute information of registered AP comprises MAC Address and/or the sequence number of AP, and AC information comprises the address list of AC.
In embodiments more of the present disclosure, comparing unit utilizes the MAC Address of two AP to compare or utilizes the sequence number of two AP to compare.
In embodiments more of the present disclosure, device also comprises:
Unregistered AP processing unit, if be unregistered AP for sending the AP of DHCP message, then abandon DHCP message or distributes assigned address for unregistered AP.
In technical scheme of the present disclosure, first AP address distributing device obtains the configuration data of registered AP, then the attribute information of the AP carried in DHCP message is mated with the attribute information of registered AP in synchronous next configuration data, if find the AP attribute information matched, then determine to send the AP of DHCP message registered, issue the information of AC corresponding thereto while for its allocation address.So just without the need to different AC is bound from different VLAN, eliminate the dependence to VLAN, make the AP in whole network can use identical VLAN, save VLAN resource, simultaneously owing to only needing the corresponding relation safeguarding registered AP and corresponding AC information, significantly reduce the VLAN configuration of the AP first line of a couplet, Service Gateway configure and maintenance difficulty.In addition, because the corresponding relation of AP and AC is planned in advance, and can be synchronized to this corresponding relation by address distributing device, therefore, AP can be linked into the AC specified neatly, improves the utilance of AC.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the disclosure, forms a application's part.In the accompanying drawings:
Fig. 1 is the principle schematic of AP address assignment in prior art.
Fig. 2 is the principle schematic of AP address assignment in the disclosure.
Fig. 3 is the schematic flow sheet of the distribution method of AP address in the wlan network of a disclosure embodiment.
Fig. 4 is the schematic flow sheet of the distribution method of AP address in the wlan network of another embodiment of the disclosure.
Fig. 5 to Fig. 7 is the schematic diagram of an example of option43 attribute in the disclosure.
Fig. 8 is the structural representation of the AP address distributing device of a disclosure embodiment.
Fig. 9 is the structural representation of the AP address distributing device of another embodiment of the disclosure.
Figure 10 is the structural representation of the distribution system of AP address in the wlan network of a disclosure embodiment.
Embodiment
Below with reference to accompanying drawings the disclosure is described.It should be noted that following being described in is only explanatory and exemplary in essence, never as any restriction to the disclosure and application or use.Unless stated otherwise, otherwise positioned opposite and numerical expression and the numerical value of the parts of setting forth in an embodiment and step do not limit the scope of the present disclosure.In addition, technology well known by persons skilled in the art, method and apparatus may not be discussed in detail, but are intended to the part becoming specification in appropriate circumstances.
In order to solve the problems of the prior art, the following embodiment of the disclosure adds AP address distributing device in existing Fig. 1 system, as shown in Figure 2, is realized the distribution of AP address and issuing of AC list by this device.The DHCP message of the AP that each AC of each producer manages by BAS is unified is forwarded to AP address distributing device, can comprise main AC and standby AC by the producer of the registered AP of AP address distributing device identification and the AC(of correspondence), be each AP allocation address and corresponding AC list; Process the address assignment of attendant's terminal and the DHCP message process of other illegal terminal simultaneously.Like this, the AP that each AC is corresponding can use identical VLAN, and BAS does not need the VLAN identifying AP more yet, eliminates the demand to VLAN resource, meanwhile, simplifies the configuration of VLAN and BAS, improves the efficiency of maintenance.
It is pointed out that the AP in the following embodiment of the disclosure is thin AP.
Fig. 3 is the schematic flow sheet of the distribution method of AP address in the wlan network of a disclosure embodiment.
As shown in Figure 3, this embodiment can comprise the following steps:
S302, the configuration data of synchronous registered access point AP, can include but not limited in configuration data that registered AP(can be called " legal AP " again) attribute information and the corresponding relation of corresponding AC information;
Particularly, dispose complete or after upgrading at each AP, AP address distributing device can from the configuration data of the synchronous registered each AP of WLAN webmaster/resource management system, to judge according to this configuration data whether the AP of transmission DHCP message is registered AP.
Wherein, the attribute information of registered AP can include but not limited to the MAC(Medium Access Control of AP, medium education) address and/or sequence number, AC information can include but not limited to the address list of AC, the address of AC corresponding to multiple and same AP can be listed in this address list, the address of main AC and the address of one or more AC for subsequent use can be comprised, in the disabled situation in main AC address, directly can start the address of AC for subsequent use.
S304, receives the DHCP message that Service Gateway forwards, and carries the attribute information of the AP sending DHCP message in this DHCP message, and whether the AP sending DHCP message is registered AP to utilize this attribute information to judge.
S306, compares the attribute information of registered AP in the attribute information of the AP of transmission DHCP message and configuration data.
S308, if the attribute information comprising the AP sending DHCP message in configuration data, then determines that the AP sending DPCH message is registered AP, otherwise, determine that this AP is unregistered AP.
S310, if the AP sending DPCH message is registered AP, then obtains the AC information corresponding with the AP sending DHCP message in self-configuring data;
S312, for sending the AP allocation address of DHCP message, issues the AC information of acquisition simultaneously, and wherein, both can be that assigned address also can be distributed for AP in AP Random assignment address, that is, same AP is fixing uses some addresses.
In this embodiment, first AP address distributing device obtains the configuration data of registered AP, then the attribute information of the AP carried in DHCP message is mated with the attribute information of registered AP in synchronous next configuration data, if find the AP attribute information matched, then determine to send the AP of DHCP message registered, issue the information of AC corresponding thereto while for its allocation address.So just without the need to different AC is bound from different VLAN, eliminate the dependence to VLAN, make the AP in whole network can use identical VLAN, save VLAN resource, simultaneously owing to only needing the corresponding relation safeguarding registered AP and corresponding AC information, significantly reduce the VLAN configuration of the AP first line of a couplet, Service Gateway configure and maintenance difficulty.In addition, because the corresponding relation of AP and AC is planned in advance, and can be synchronized to this corresponding relation by address distributing device, therefore, AP can be linked into the AC specified neatly, improves the utilance of AC.
Further, in step S306, because the sequence number of MAC Address and AP can both unique identification AP, the MAC Address of two AP therefore both can be utilized to compare, the sequence number of two AP can also be utilized to compare.
After step S308, if determine that sending the AP of DHCP message is unregistered AP, then can abandon DHCP message or distribute assigned address, to focus on these unregistered AP for unregistered AP.
Next, above-described embodiment is further illustrated by an instantiation.
Fig. 4 is the schematic flow sheet of the distribution method of AP address in the wlan network of another embodiment of the disclosure.
As shown in Figure 4, this embodiment can comprise the following steps:
S402, AP address distributing device receives the DHCP message that Service Gateway (that is, BAS) forwards;
S404, by AP configuration data (such as, MAC Address, the sequence number etc.) comparison of synchronously coming with WLAN webmaster/resource management system, determines whether as registration AP;
S406, if non-registered AP, then can abandon the DHCP message received or distribute the address of a particular address section;
S408, if registration AP, then the AP configuration data of synchronously being come by WLAN webmaster or resource management system knows the information such as the AC information (can comprise the address information of active and standby AC) corresponding with this AP and producer;
S410, according to the option43 attribute that concrete producer builds this AP, carries AC list in this attribute; For the option43 attribute of magnificent three AP, each field of this attribute as shown in Figure 5-Figure 7;
S412, AP address distributing device is this AP allocation address, issues option43 attribute simultaneously, and AP obtains AC address by the Option43 attribute received, and such AP could active and AC connection setup tunnel.
One of ordinary skill in the art will appreciate that, realize the whole of said method embodiment to have been come by the hardware that program command is relevant with part steps, aforesaid program can be stored in a computing equipment read/write memory medium, this program is when performing, perform and comprise the step of said method embodiment, and aforesaid storage medium can comprise ROM, RAM, magnetic disc and CD etc. various can be program code stored medium.
Fig. 8 is the structural representation of the AP address distributing device of a disclosure embodiment.
As shown in Figure 8, the device 80 in this embodiment can comprise configuration data lock unit 802, message receiving element 804, comparing unit 806, AC information acquisition unit 808 and allocation unit 810.Wherein,
Configuration data lock unit 802, for the configuration data of synchronous registered access point AP, configuration data comprises the attribute information of registered AP and the corresponding relation of corresponding AC information;
Wherein, the attribute information of registered AP comprises MAC Address and/or the sequence number of AP, and AC information comprises the address list of AC;
Message receiving element 804, for receiving the DHCP message that Service Gateway forwards, in DHCP message, carrying sends the attribute information of the AP of DHCP message;
Comparing unit 806, for the attribute information sending registered AP in the attribute information of AP of DHCP message and configuration data is compared, if comprise the attribute information of the AP sending DHCP message in configuration data, then determine that the AP sending DPCH message is registered AP, otherwise, be defined as unregistered AP;
AC information acquisition unit 808, if be registered AP for the AP sending DPCH message, then obtains the AC information corresponding with the AP sending DHCP message in self-configuring data;
Allocation unit 810, for the AP allocation address for sending DHCP message, issues the AC information of acquisition simultaneously.
In this embodiment, first AP address distributing device obtains the configuration data of registered AP, then the attribute information of the AP carried in DHCP message is mated with the attribute information of registered AP in synchronous next configuration data, if find the AP attribute information matched, then determine to send the AP of DHCP message registered, issue the information of AC corresponding thereto while for its allocation address.So just without the need to different AC is bound from different VLAN, eliminate the dependence to VLAN, make the AP in whole network can use identical VLAN, save VLAN resource, simultaneously owing to only needing the corresponding relation safeguarding registered AP and corresponding AC information, significantly reduce the VLAN configuration of the AP first line of a couplet, Service Gateway configure and maintenance difficulty.In addition, because the corresponding relation of AP and AC is planned in advance, and can be synchronized to this corresponding relation by address distributing device, therefore, AP can be linked into the AC specified neatly, improves the utilance of AC.
Further, comparing unit can utilize the MAC Address of two AP to compare or utilize the sequence number of two AP to compare.
Fig. 9 is the structural representation of the AP address distributing device of another embodiment of the disclosure.
As shown in Figure 9, compared with the embodiment in Fig. 8, the device 90 in this embodiment can also comprise unregistered AP processing unit 902, if be unregistered AP for sending the AP of DHCP message, then abandon DHCP message or distributes assigned address for unregistered AP.
Figure 10 is the structural representation of the distribution system of AP address in the wlan network of a disclosure embodiment.
As shown in Figure 10, system 100 in this embodiment can comprise Service Gateway 1002, AP1004, AC1006, WLAN webmaster/resource management system 1008 and AP address distributing device 1010, wherein, AP address distributing device 1010 is mutual with Service Gateway 1002 and WLAN webmaster/resource management system 1008 respectively, and Service Gateway 1002 is mutual with AC1006 and AP1004 respectively.
In addition, AP address distributing device 1010 can be realized by previous embodiment.And this device can also be connected with maintenance terminal.
Particularly, the interface of AP address distributing device and maintenance terminal, carries out daily management and configuration for attendant to this device, and this interface can adopt HTTP/HTTPS protocol communication; With WLAN webmaster/resource management system interface, for the AP configuration data of synchronous WLAN network management system/resource management system, such as, the attribute information (can comprise MAC Address, sequence number etc.) of AP and the AC facility information of correspondence are (such as, AC address etc.), to know the specifying information of legal AP, this interface can adopt WebService/SNMP(Simple Network Management Protocol, Simple Network Management Protocol) protocol communication; With Service Gateway (BAS) interface, for receiving the DHCP message of AP that BAS forwards and other terminal, this interface can adopt DHCP protocol communication.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, and part identical with similar between each embodiment can cross-reference.For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part can see the explanation of embodiment of the method part.
Although describe the disclosure with reference to exemplary embodiment, should be understood that the disclosure is not limited to above-mentioned exemplary embodiment.It will be obvious to those skilled in the art that and can revise above-mentioned exemplary embodiment under the condition not deviating from the scope of the present disclosure and spirit.The scope of appended claim should be endowed the widest explanation, to comprise all such amendments and equivalent 26S Proteasome Structure and Function.

Claims (8)

1. the distribution method of AP address in wlan network, is characterized in that, comprising:
The configuration data of synchronous registered access point AP, described configuration data comprises the attribute information of registered AP and the corresponding relation of corresponding access controller AC information;
Receive the DHCP message that Service Gateway forwards, in described DHCP message, carrying sends the attribute information of the AP of described DHCP message;
The attribute information of registered AP in the attribute information of the AP of the described DHCP message of transmission and described configuration data is compared;
If comprise the attribute information of the AP sending described DHCP message in described configuration data, then determine that the AP sending described DPCH message is registered AP, otherwise, be defined as unregistered AP;
If the AP sending described DPCH message is registered AP, then in described configuration data, obtain the AC information corresponding with the AP sending described DHCP message;
For sending the AP allocation address of described DHCP message, issue the AC information of acquisition simultaneously.
2. the distribution method of AP address in wlan network according to claim 1, it is characterized in that, the attribute information of described registered AP comprises MAC Address and/or the sequence number of AP, and described AC information comprises the address list of AC.
3. the distribution method of AP address in wlan network according to claim 2, is characterized in that, describedly the step that the attribute information sending registered AP in the attribute information of the AP of described DHCP message and described configuration data is compared is specially:
Utilize the MAC Address of two AP to compare or utilize the sequence number of two AP to compare.
4. the distribution method of AP address in wlan network according to claim 1, it is characterized in that, described method also comprises:
If the AP sending described DHCP message is unregistered AP, then abandons described DHCP message or distribute assigned address for described unregistered AP.
5. an AP address distributing device, is characterized in that, comprising:
Configuration data lock unit, for the configuration data of synchronous registered access point AP, described configuration data comprises the attribute information of registered AP and the corresponding relation of corresponding access controller AC information;
Message receiving element, for receiving the DHCP message that Service Gateway forwards, in described DHCP message, carrying sends the attribute information of the AP of described DHCP message;
Comparing unit, for the attribute information sending registered AP in the attribute information of AP of described DHCP message and described configuration data is compared, if comprise the attribute information of the AP sending described DHCP message in described configuration data, then determine that the AP sending described DPCH message is registered AP, otherwise, be defined as unregistered AP;
AC information acquisition unit, if the AP for sending described DPCH message is registered AP, then obtains the AC information corresponding with the AP sending described DHCP message in described configuration data;
Allocation unit, for the AP allocation address for sending described DHCP message, issues the AC information of acquisition simultaneously.
6. AP address distributing device according to claim 5, is characterized in that, the attribute information of described registered AP comprises MAC Address and/or the sequence number of AP, and described AC information comprises the address list of AC.
7. AP address distributing device according to claim 6, is characterized in that, described comparing unit utilizes the MAC Address of two AP to compare or utilizes the sequence number of two AP to compare.
8. AP address distributing device according to claim 5, is characterized in that, described device also comprises:
Unregistered AP processing unit, if the AP for sending described DHCP message is unregistered AP, then abandons described DHCP message or distributes assigned address for described unregistered AP.
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