CN105357717A - Method for adjusting load balance between AC, access point and access controller - Google Patents
Method for adjusting load balance between AC, access point and access controller Download PDFInfo
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- CN105357717A CN105357717A CN201410419068.3A CN201410419068A CN105357717A CN 105357717 A CN105357717 A CN 105357717A CN 201410419068 A CN201410419068 A CN 201410419068A CN 105357717 A CN105357717 A CN 105357717A
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Abstract
The invention provides a method for adjusting load balance between AC, an access point and an access controller, and relates to the technical field of wireless communication. The method for adjusting the load balance between AC is applied to a WLAN comprising the access point AP and at least two access controllers AC and comprises the following steps: the AP sends an online request to a preset AC; the AP receives an IP address of the AC with the lightest load in the WLAN and fed back by the preset AC; and the AP establishes a control channel between the AP and the AC with the lightest load according to the IP address. The method is used for selecting the AC with the lightest load in the WLAN to establish a connection with the AP to achieve load balance between AC, solving the problem that load unbalance between the AC causes overlarge device load of the high-load AC to influence the device stability, and improving the stability of the WLAN.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of method, access point and access controller regulating load balancing between AC.
Background technology
In current wlan system, AP equipment (radio reception device) all sets up tunnel (being realized by the IP address preparing AC in advance on AP) with pre-configured a certain AC (wireless controller) when reaching the standard grade first or restart and reach the standard grade, and after this AP equipment is controlled by the AC of correspondence.
In prior art, under different AC, AP user is not equally distributed, and the customer flow causing some AC to manage is large, and the customer flow that some AC manages is little, and the load imbalance between AC, can cause high capacity AC machine utilization excessive, affect the stability of equipment.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of method, access point and the access controller that regulate load balancing between AC, solves load imbalance between different AC, affects the problem of stabilization of equipment performance.
In order to achieve the above object, the embodiment of the present invention provides a kind of method regulating load balancing between AC, is applied in the wlan network comprising access point AP and at least two access controller AC, comprises:
AP presets AC to one and sends the request of reaching the standard grade;
Described AP receives the IP address of the AC that load is the lightest in the described wlan network of described default AC feedback;
Described AP, according to described IP address, sets up the control channel between this AP and the lightest AC of described load.
Wherein, described AP comprises to the step that presets the AC transmission request of reaching the standard grade:
According to the IP address of the pre-configured described default AC in this locality, described AP sends to described default AC reaching the standard grade request by Capwap agreement, described in reach the standard grade and ask to comprise the IP address of described default AC.
Wherein, before described AP presets the AC transmission request of reaching the standard grade to one, described method also comprises:
Described AP is by being based upon the control channel between this AP and described default AC in advance, and receive the reset command that described default AC sends, wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold;
Described AP restarts according to described reset command, and after having restarted, perform the described step sending the request of reaching the standard grade to described default AC.
In order to better realize above-mentioned purpose, the embodiment of the present invention also provides a kind of method regulating load balancing between AC, is applied in the wlan network comprising access point AP and at least two access controller AC, comprises:
One AC receives the request of reaching the standard grade of AP;
A described AC responds the request of reaching the standard grade of described AP, determines the AC that in this wlan network, load is the lightest;
A described AC sends the IP address of the AC that load is the lightest in this wlan network to described AP, set up control channel to make described AP according between described IP address and the lightest AC of this load.
Wherein, determine that the method for the AC that load is the lightest in this wlan network comprises:
A described AC obtains and safeguards the load information of each AC in this wlan network;
A described AC, according to the load information safeguarded, determines the AC that in wlan network, load is the lightest.
Wherein, a described AC obtains and safeguards that the step of the load information of each AC in this wlan network comprises:
A described AC obtains the degree of aging of each AC equipment in this wlan network, cpu busy percentage and customer service load capacity;
A described AC, according to the degree of aging of each AC equipment, cpu busy percentage and customer service load capacity, determines the load information of each AC, wherein,
Have higher load information compared with the AC of high cpu utilization, AC when cpu busy percentage is identical with high user business load amount has higher load information,
And, when the degree of aging of AC exceeds pre-determined threshold, the product that the cpu busy percentage of this AC adopts the actual value of the cpu busy percentage of this user and to be greater than the weighted value of 1 characterizes, and the customer service load capacity of this AC also adopts the actual value of the customer service load capacity of this user and the product of described weighted value to characterize.
Wherein, described method also comprises:
A described AC obtains the real time load information of this AC;
If the real time load information of a described AC is greater than a preset value, a described AC issues reset command to the arbitrary AP in this AC coverage, and returns the step of the real time load information of described this AC of acquisition;
A described AC receives the request of reaching the standard grade that described AP feeds back according to described reset command, and returns the step of the request of reaching the standard grade of the described AP of described response.
Wherein, the step of the request of reaching the standard grade of the described AP of described response also comprises:
The configuration information of described AP and associated user authentication charge information are synchronized on the lightest AC of described load by a described AC.
The embodiment of the present invention also provides a kind of access point AP, comprising:
First sending module, sends for presetting AC to one the request of reaching the standard grade;
First receiver module, receives the IP address of the AC that load is the lightest in the described wlan network of described default AC feedback for AP;
First sets up module, for according to described IP address, sets up the control channel between this AP and the lightest AC of described load.
Wherein, described first sending module comprises:
First sends submodule, for the IP address according to the pre-configured described default AC in this locality, sends reaching the standard grade request by Capwap agreement to described default AC, described in reach the standard grade and ask to comprise the IP address of described default AC.
Wherein, described AP also comprises:
Second receiver module, for the control channel by being based upon in advance between this AP and described default AC, receive the reset command that described default AC sends, wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold;
Executive Module, for restarting according to described reset command, and performs the described step sending the request of reaching the standard grade to described default AC after having restarted.
The embodiment of the present invention also provides a kind of access controller AC, comprising:
3rd receiver module, for receiving the request of reaching the standard grade of AP;
Determination module, for responding the request of reaching the standard grade of described AP, determines the AC that in this wlan network, load is the lightest;
Second sending module, for sending the IP address of the AC that load is the lightest in this wlan network to described AP, sets up control channel to make described AP according between described IP address and the lightest AC of this load.
Wherein, described AC also comprises:
First acquisition module, for obtaining and safeguarding the load information of each AC in this wlan network;
Select module, for according to the load information safeguarded, determine the AC that in wlan network, load is the lightest.
Wherein, described first acquisition module comprises:
First obtains submodule, for obtaining the degree of aging of each AC equipment in this wlan network, cpu busy percentage and customer service load capacity;
Maintenance module, for the degree of aging according to each AC equipment, cpu busy percentage and customer service load capacity, determines the load information of each AC, wherein,
Have higher load information compared with the AC of high cpu utilization, AC when cpu busy percentage is identical with high user business load amount has higher load information,
And, when the degree of aging of AC exceeds pre-determined threshold, the product that the cpu busy percentage of this AC adopts the actual value of the cpu busy percentage of this user and to be greater than the weighted value of 1 characterizes, and the customer service load capacity of this AC also adopts the actual value of the customer service load capacity of this user and the product of described weighted value to characterize.
Wherein, described AC also comprises:
Second acquisition module, for obtaining the real time load information of this AC;
Issue module, if be greater than a preset value for the real time load information of this AC, issue reset command to the arbitrary AP in this AC coverage, and return the step of the real time load information of described this AC of acquisition;
3rd receiver module, for receiving the request of reaching the standard grade that described AP feeds back according to described reset command, and returns the step of the request of reaching the standard grade of the described AP of described response.
Wherein, described AC also comprises:
Synchronization module, for being synchronized to the lightest AC of described load by the configuration information of described AP and associated user authentication charge information.
The technique scheme of the embodiment of the present invention at least has following beneficial effect:
Between the adjustment AC of the embodiment of the present invention load balancing method in, connect by selecting the lightest AC and the AP of load in wlan network, achieve load balancing between AC, solve the load imbalance between AC, cause high capacity AC machine utilization excessive, affect the problem of stabilization of equipment performance, improve the stability of wlan network.
Accompanying drawing explanation
Fig. 1 represents in the embodiment of the present invention basic step schematic diagram regulating the method for load balancing between AC in AP side;
Fig. 2 represents in the embodiment of the present invention basic step schematic diagram regulating the method for load balancing between AC in AC side
Fig. 3 represents in the embodiment of the present invention flow chart of the specific embodiment one of the method regulating load balancing between AC;
Fig. 4 represents in the embodiment of the present invention flow chart of the specific embodiment two of the method regulating load balancing between AC;
Fig. 5 represents the composition structural representation of the access point of the embodiment of the present invention;
Fig. 6 represents the composition structural representation of the access controller of the embodiment of the present invention.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The embodiment of the present invention in prior art between AC load extremely unbalanced.Affect the problem of stabilization of equipment performance, a kind of method, access point and the access controller that regulate load balancing between AC are provided, connect by selecting the lightest AC and the AP of load in wlan network, achieve load balancing between AC, solve the load imbalance between AC, cause high capacity AC machine utilization excessive, affect the problem of stabilization of equipment performance, improve the stability of wlan network.
As shown in Figure 1, the embodiment of the present invention provides a kind of method regulating load balancing between AC, is applied in the wlan network comprising access point AP and at least two access controller AC, comprises:
Step 1, AP presets AC to one and sends the request of reaching the standard grade;
Step 2, described AP receives the IP address of the AC that load is the lightest in the described wlan network of described default AC feedback;
Step 3, described AP, according to described IP address, sets up the control channel between this AP and the lightest AC of described load.
In the above embodiment of the present invention, all send to pre-configured a certain AC (presetting AC) request of reaching the standard grade when AP reaches the standard grade first or reaches the standard grade after restarting in wlan network, namely above-mentioned steps 1 comprises:
Step 11, according to the IP address of the pre-configured described default AC in this locality, described AP sends to described default AC reaching the standard grade request by Capwap agreement, described in reach the standard grade and ask to comprise the IP address of described default AC.
Concrete, Capwap agreement is the WAP (wireless access point) and configuration protocol that control, is a general tunnel protocol, complete AP and find the basic agreement functions such as AC, and concrete wireless access technology has nothing to do.
It should be noted that, the Capwap agreement that the embodiment of the present invention provides is only the preferred embodiment mode of the application, is not used in and limits the scope of the invention, and other agreements that can send the request of reaching the standard grade are all applicable in embodiments of the present invention.
The specific embodiment of the invention, the customer service total amount under the load state employing AC of AC is as assessment foundation, and the customer service total amount namely under AC is fewer, and the load of this AC is lighter.
In the above embodiment of the present invention, before step 1, described method also comprises:
Step 100, described AP is by being based upon the control channel between this AP and described default AC in advance, and receive the reset command that described default AC sends, wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold;
Step 101, described AP restarts according to described reset command, and after having restarted, perform the described step sending the request of reaching the standard grade to described default AC.
Between the adjustment AC in the specific embodiment of the invention, the method for load balancing is also applied in restarting of AP, and the restarting of AP comprises AP and go offline to restart and require ap reboot with AC transmitting order to lower levels; Wherein, AP goes offline when restarting and performs above-mentioned steps 1-step 2-step 3 successively; And during AC transmitting order to lower levels requirement ap reboot, above-mentioned steps 100-step 101-step 1-step 2-step 3 need be performed successively, complete restarting of AP.
Concrete, in the embodiment of the present invention, be establish control channel in advance between AP and described default AC in step 100, namely AP is controlled by default AC originally, then AP receives the reset command preset AC and send by control channel.Wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold, and this pre-determined threshold, by comprehensively determining according to average load amount in whole wlan network and AC quantity, is not limited to a fixed value.
In order to better realize above-mentioned purpose, as shown in Figure 2, the embodiment of the present invention also provides a kind of method regulating load balancing between AC, is applied in the wlan network comprising access point AP and at least two access controller AC, comprises:
Step 4, an AC receives the request of reaching the standard grade of AP;
Step 5, a described AC responds the request of reaching the standard grade of described AP, determines the AC that in this wlan network, load is the lightest;
Step 6, a described AC sends the IP address of the AC that load is the lightest in this wlan network to described AP, set up control channel to make described AP according between described IP address and the lightest AC of this load.
In the above embodiment of the present invention, the AC in step 4 is the AC corresponding with this AP set.Concrete, in step 5, if the AC that in this wlan network, load is the lightest is an above-mentioned AC, then directly set up the control channel between described AP and a described AC; If the AC that in this wlan network, load is the lightest is not an above-mentioned AC, then the IP address of AC the lightest for load is sent to described AP, then described AP is according to the IP address of the lightest AC of described load, sets up the control channel between the AC the lightest with described load.
It should be noted that, in step 4, an AC is the request of reaching the standard grade of the AP received by Capwap agreement, and wherein, this request of reaching the standard grade comprises the IP address of an AC.
Hold continuous upper example, in specific embodiments of the invention, determine that the method for the AC that load is the lightest in this wlan network comprises:
Step 7, a described AC obtains and safeguards the load information of each AC in this wlan network;
Step 8, a described AC, according to the load information safeguarded, determines the AC that in wlan network, load is the lightest.
In the above embodiment of the present invention, an AC is also responsible for and real-time synchronization load information between other AC, forms the load information list between AC; Concrete, in this wlan network of AC Real-time Obtaining, the customer service total amount of each AC, determines the real time load information of each AC, and preserves the real time load information of all AC in this wlan network in this locality; The real time load information of all AC that the one AC preserves from this locality, select the AC that load is the lightest.
In the above embodiment of the present invention, step 7 comprises:
Step 71, a described AC obtains the customer service load capacity of the degree of aging of each AC equipment in this wlan network, the cpu busy percentage of each AC equipment and each AC equipment;
Step 72, a described AC, according to the customer service load capacity of the degree of aging of described AC equipment, the cpu busy percentage of AC equipment and AC equipment, safeguards the load information of each AC.
Here, the load information of AC, with cpu busy percentage and the equal positive correlation of customer service load capacity of this AC, that is, cpu busy percentage is higher, and load information is also higher, otherwise cpu busy percentage is lower, and load information is also lower.Similar, customer service load capacity is higher, and load information is also higher, otherwise customer service load capacity is lower, and load information is also lower.Further consider the degree of aging of AC equipment, if excess budget thresholding, the product that then the above-mentioned cpu busy percentage (customer service load capacity) of this AC can adopt the actual value and of cpu busy percentage (customer service load capacity) to be greater than the weighted value of 1 characterizes, preferentially to set up control channel by the AC that degree of aging is lighter when same traffic pressure.
Such as, a kind of maintenance principles of optional load information is: have higher load information compared with the AC of high cpu utilization, and AC when cpu busy percentage is identical with high user business load amount has higher load information; And, when the degree of aging of AC exceeds pre-determined threshold, the product that the cpu busy percentage of this AC adopts the actual value of the cpu busy percentage of this user and to be greater than the weighted value of 1 characterizes, and the customer service load capacity of this AC also adopts the actual value of the customer service load capacity of this user and the product of described weighted value to characterize.
As a kind of implementation, in the embody rule of the embodiment of the present invention, AC load information factor of judgment is as follows: AC sets up the load-factor informix list between each AC: degree of aging (can adopt the characterize service life) M comprising each AC equipment, the cpu busy percentage N of AC equipment, customer service load capacity K.
Suppose, the decision criteria of AC load height is set as that the AC equipment that degree of aging is high arranges relatively high cpu busy percentage and customer service load decision content, namely first judge whether the degree of aging (service life) of AC equipment reaches threshold value M1, as do not reached (M<M1), then the cpu busy percentage N of AC equipment and subscriber traffic k is by calculated with actual values; Degree of aging (service life) as C equipment exceedes threshold value M1, i.e. (M>M1), then cpu busy percentage N and subscriber traffic k is multiplied by parameter x calculating by actual value, such as x=120%, then cpu busy percentage presses N1=1.2N and subscriber traffic calculates by K1=1.2k.
Decision criteria: after above-mentioned algorithm, cpu busy percentage decision content height person is judged to be that AC load is high, if cpu busy percentage is equal, subscriber traffic height person is judged to be that AC load is high, sets up list according to above-mentioned criterion, arranges out all AC loads order from high to low.
It should be noted that, the specific implementation in the above embodiment of the present invention is only a preferred embodiment of the present invention, and other correctly can judge that the judgment criterion of AC load information is all applicable in embodiments of the present invention.
Further, the real time load information of all AC of the present invention can not only be preserved in this locality of AC, can also preserve in arbitrary storage cell of AC or memory device, be not limited to a fixed form, the preservation form that can call at any time is all applicable in embodiments of the present invention.
Hold continuous upper example, in the specific embodiment of the invention, described method also comprises:
Step 200, a described AC obtains the real time load information of this AC;
Step 201, if the real time load information of a described AC is greater than a preset value, a described AC issues reset command to the arbitrary AP in this AC coverage, and returns the step of the real time load information of described this AC of acquisition;
Step 202, a described AC receives the request of reaching the standard grade that described AP feeds back according to described reset command, and returns the step of the request of reaching the standard grade of the described AP of described response.
In the above embodiment of the present invention, when an AC overload, issue instruction of restarting by the AP managed to it, after ap reboot, access the lightest AC of load, realize the load balancing between AC.Wherein, in step 201, return the step of the real time load information of described this AC of acquisition, namely the step returning 200 is to prevent an AC after instruction ap reboot, the situation that load under one AC is still overweight, makes the load under an AC be no more than described preset value by circulation execution step 200, step 201; The reset command that the AP that above-mentioned needs are restarted issues according to an AC sends Restart Request to former AC (AC), and returns step 5, realizes the equilibrium of load between AC.
In the above embodiment of the present invention, the step of the request of reaching the standard grade of the described AP of described response also comprises:
Step 203, the configuration information of described AP and associated user authentication charge information are synchronized on the lightest AC of described load by a described AC.
In the specific embodiment of the invention, when in order to connect new AC after ensureing ap reboot, user profile under AP is not lost, and an AC also needs to be responsible for the configuration information of the AP after restarting and user authentication charge information to be synchronized to (on the AC that namely load is the lightest) on new AC.This step 203 only need to perform when accessing new AC at ap reboot.
Specific embodiment one: composition graphs 3 elaborates to new AP (AP1) flow process of reaching the standard grade:
The load state of other AC of real-time synchronization between step a, AC, safeguards anticipatory remark ground AC loading condition list (table data comprises: subscriber traffic);
Step b, AP1 reach the standard grade, and send out the request of reaching the standard grade (request of reaching the standard grade, Capwap agreement, comprises field: the IP address of AC1) to the AC1 set;
The AC2 that step c, AC1 select load the lightest from list, informs AP1 (request response of reaching the standard grade, Capwap agreement, comprises field: the IP address of AC2) by its IP address; Load state adopts customer service total amount under AC as assessment foundation, and load balancing mode is for selecting most underload AC;
Steps d, AP1 completes tunnel connection establishment (tunnel is set up, and Capwap agreement, comprises field: the IP address of AC2) with specifying AC2.
Concrete enforcement two: composition graphs 4 couples of AP2 flow process of reaching the standard grade after restarting elaborates:
The load state of other AC of real-time synchronization between step e, AC, safeguards anticipatory remark ground AC loading condition list (table data comprises: subscriber traffic);
Step f, AP2 reach the standard grade after restarting, and send out the request of reaching the standard grade (request of reaching the standard grade, Capwap agreement, comprises field: the IP address of AC3) to former connection AC3;
Step g, the AC4 that AC3 selects load the lightest from list, informs AP2 (request response of reaching the standard grade, Capwap agreement, comprises field: the IP address of AC4) by its IP address; Load condition adopts customer service total amount under AC as assessment foundation, and load balancing mode is for selecting most underload AC;
The configuration information of former connection AP2 and associated user authentication charge information are synchronized to AC4 (IP agreement, data comprise: AP2 configuration, user authentication status, customer charging information) by step h, AC3;
Step I, AP2 completes tunnel connection establishment (tunnel is set up, and Capwap agreement, comprises field: the IP address of AC4) with specifying AC4.
Further, hold continuous upper example, when AC3 overload, AP by managing to it issues instruction of restarting (supposing that this AP is AP2), namely AC3 issues AP2 instruction of restarting to AP2, AP2 reaches the standard grade after performing restarting of AP2 in specific embodiment two according to instruction of restarting flow process, in this not repeated description.
Preferably, in order to the information interactive process between less AC3 and AP2, by when AC3 sends instruction of restarting to AP2, issue the IP address of the AC4 that AP2 need connect in the lump, after making AP2 receive this instruction, can directly and the lighter AC4 of load connect.
Concrete, as signaling AP-restart under AC3, based on IP agreement, and pass through the IP address of the recommendation AC4 that this transmitting signaling downwards AP2 connects, namely field comprises: IP, AP2 instruction of restarting restart of IP, AC4 of AC3); Underloading AC2 directly can be selected to access according to the control of AC1 by this mode AP, improve the efficiency of ap reboot.
In order to better realize above-mentioned purpose, as shown in Figure 5, the embodiment of the present invention also provides a kind of access point AP, comprising:
First sending module 10, sends for presetting AC to one the request of reaching the standard grade;
First receiver module 20, receives the IP address of the AC that load is the lightest in the described wlan network of described default AC feedback for AP;
First sets up module 30, for according to described IP address, sets up the control channel between this AP and the lightest AC of described load.
In the above embodiment of the present invention, described first sending module 10 comprises:
First sends submodule, for the IP address according to the pre-configured described default AC in this locality, sends reaching the standard grade request by Capwap agreement to described default AC, described in reach the standard grade and ask to comprise the IP address of described default AC.
In the above embodiment of the present invention, described AP also comprises:
Second receiver module, for the control channel by being based upon in advance between this AP and described default AC, receive the reset command that described default AC sends, wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold;
Executive Module, for restarting according to described reset command, and performs the described step sending the request of reaching the standard grade to described default AC after having restarted.
It should be noted that, the access point that can realize the method for load balancing between above-mentioned adjustment AC of the access point that the present invention passes through, then between above-mentioned adjustment AC, all embodiments of the method for load balancing are all applicable to this access point, and all can reach same or analogous beneficial effect.
In order to better realize above-mentioned purpose, the embodiment of the present invention also provides a kind of access controller AC, comprising:
3rd receiver module 40, for receiving the request of reaching the standard grade of AP;
Determination module 50, for responding the request of reaching the standard grade of described AP, determines the AC that in this wlan network, load is the lightest;
Second sending module 60, for sending the IP address of the AC that load is the lightest in this wlan network to described AP, sets up control channel to make described AP according between described IP address and the lightest AC of this load.
In the above embodiment of the present invention, described AC also comprises:
First acquisition module, for obtaining and safeguarding the load information of each AC in this wlan network;
Select module, for according to the load information safeguarded, determine the AC that in wlan network, load is the lightest.
In the above embodiment of the present invention, described first acquisition module comprises:
First obtains submodule, for obtaining the degree of aging of each AC equipment in this wlan network, cpu busy percentage and customer service load capacity;
Maintenance module, for the degree of aging according to each AC equipment, cpu busy percentage and customer service load capacity, determines the load information of each AC, wherein,
Have higher load information compared with the AC of high cpu utilization, AC when cpu busy percentage is identical with high user business load amount has higher load information,
And, when the degree of aging of AC exceeds pre-determined threshold, the product that the cpu busy percentage of this AC adopts the actual value of the cpu busy percentage of this user and to be greater than the weighted value of 1 characterizes, and the customer service load capacity of this AC also adopts the actual value of the customer service load capacity of this user and the product of described weighted value to characterize.
In the above embodiment of the present invention, described AC also comprises:
Second acquisition module, for obtaining the real time load information of this AC;
Issue module, if be greater than a preset value for the real time load information of this AC, issue reset command to the arbitrary AP in this AC coverage, and return the step of the real time load information of described this AC of acquisition;
3rd receiver module, for receiving the request of reaching the standard grade that described AP feeds back according to described reset command, and returns the step of the request of reaching the standard grade of the described AP of described response.
In the above embodiment of the present invention, described AC also comprises:
Synchronization module, for being synchronized to the lightest AC of described load by the configuration information of described AP and associated user authentication charge information.
It should be noted that, the access controller that can realize the method for load balancing between above-mentioned adjustment AC of the access controller that the present invention passes through, then between above-mentioned adjustment AC, all embodiments of the method for load balancing are all applicable to this access controller, and all can reach same or analogous beneficial effect.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (16)
1. regulate a method for load balancing between AC, be applied in the wlan network comprising access point AP and at least two access controller AC, it is characterized in that, comprising:
AP presets AC to one and sends the request of reaching the standard grade;
Described AP receives the IP address of the AC that load is the lightest in the described wlan network of described default AC feedback;
Described AP, according to described IP address, sets up the control channel between this AP and the lightest AC of described load.
2. the method regulating load balancing between AC according to claim 1, is characterized in that, described AP comprises to the step that presets the AC transmission request of reaching the standard grade:
According to the IP address of the pre-configured described default AC in this locality, described AP sends to described default AC reaching the standard grade request by Capwap agreement, described in reach the standard grade and ask to comprise the IP address of described default AC.
3. the method regulating load balancing between AC according to claim 1, is characterized in that, before described AP presets the AC transmission request of reaching the standard grade to one, described method also comprises:
Described AP is by being based upon the control channel between this AP and described default AC in advance, and receive the reset command that described default AC sends, wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold;
Described AP restarts according to described reset command, and after having restarted, perform the described step sending the request of reaching the standard grade to described default AC.
4. regulate a method for load balancing between AC, be applied in the wlan network comprising access point AP and at least two access controller AC, it is characterized in that, comprising:
One AC receives the request of reaching the standard grade of AP;
A described AC responds the request of reaching the standard grade of described AP, determines the AC that in this wlan network, load is the lightest;
A described AC sends the IP address of the AC that load is the lightest in this wlan network to described AP, set up control channel to make described AP according between described IP address and the lightest AC of this load.
5. the method regulating load balancing between AC according to claim 4, is characterized in that, determine that the method for the AC that load is the lightest in this wlan network comprises:
A described AC obtains and safeguards the load information of each AC in this wlan network;
A described AC, according to the load information safeguarded, determines the AC that in wlan network, load is the lightest.
6. the method regulating load balancing between AC according to claim 5, it is characterized in that, a described AC obtains and safeguards that the step of the load information of each AC in this wlan network comprises:
A described AC obtains the degree of aging of each AC equipment in this wlan network, cpu busy percentage and customer service load capacity;
A described AC, according to the degree of aging of each AC equipment, cpu busy percentage and customer service load capacity, determines the load information of each AC, wherein,
Have higher load information compared with the AC of high cpu utilization, AC when cpu busy percentage is identical with high user business load amount has higher load information,
And, when the degree of aging of AC exceeds pre-determined threshold, the product that the cpu busy percentage of this AC adopts the actual value of the cpu busy percentage of this user and to be greater than the weighted value of 1 characterizes, and the customer service load capacity of this AC also adopts the actual value of the customer service load capacity of this user and the product of described weighted value to characterize.
7. the method regulating load balancing between AC according to claim 4, it is characterized in that, described method also comprises:
A described AC obtains the real time load information of this AC;
If the real time load information of a described AC is greater than a preset value, a described AC issues reset command to the arbitrary AP in this AC coverage, and returns the step of the real time load information of described this AC of acquisition;
A described AC receives the request of reaching the standard grade that described AP feeds back according to described reset command, and returns the step of the request of reaching the standard grade of the described AP of described response.
8. the method regulating load balancing between AC according to claim 7, is characterized in that, the step of the request of reaching the standard grade of the described AP of described response also comprises:
The configuration information of described AP and associated user authentication charge information are synchronized on the lightest AC of described load by a described AC.
9. an access point AP, is characterized in that, comprising:
First sending module, sends for presetting AC to one the request of reaching the standard grade;
First receiver module, receives the IP address of the AC that load is the lightest in the described wlan network of described default AC feedback for AP;
First sets up module, for according to described IP address, sets up the control channel between this AP and the lightest AC of described load.
10. AP according to claim 9, is characterized in that, described first sending module comprises:
First sends submodule, for the IP address according to the pre-configured described default AC in this locality, sends reaching the standard grade request by Capwap agreement to described default AC, described in reach the standard grade and ask to comprise the IP address of described default AC.
11. AP according to claim 9, is characterized in that, described AP also comprises:
Second receiver module, for the control channel by being based upon in advance between this AP and described default AC, receive the reset command that described default AC sends, wherein, described reset command is that described default AC detects that own load sends when exceeding pre-determined threshold;
Executive Module, for restarting according to described reset command, and performs the described step sending the request of reaching the standard grade to described default AC after having restarted.
12. 1 kinds of access controller AC, is characterized in that, comprising:
3rd receiver module, for receiving the request of reaching the standard grade of AP;
Determination module, for responding the request of reaching the standard grade of described AP, determines the AC that in this wlan network, load is the lightest;
Second sending module, for sending the IP address of the AC that load is the lightest in this wlan network to described AP, sets up control channel to make described AP according between described IP address and the lightest AC of this load.
13. AC according to claim 12, is characterized in that, described AC also comprises:
First acquisition module, for obtaining and safeguarding the load information of each AC in this wlan network;
Select module, for according to the load information safeguarded, determine the AC that in wlan network, load is the lightest.
14. AC according to claim 13, is characterized in that, described first acquisition module comprises:
First obtains submodule, for obtaining the degree of aging of each AC equipment in this wlan network, cpu busy percentage and customer service load capacity;
Maintenance module, for the degree of aging according to each AC equipment, cpu busy percentage and customer service load capacity, determines the load information of each AC, wherein,
Have higher load information compared with the AC of high cpu utilization, AC when cpu busy percentage is identical with high user business load amount has higher load information,
And, when the degree of aging of AC exceeds pre-determined threshold, the product that the cpu busy percentage of this AC adopts the actual value of the cpu busy percentage of this user and to be greater than the weighted value of 1 characterizes, and the customer service load capacity of this AC also adopts the actual value of the customer service load capacity of this user and the product of described weighted value to characterize.
15. AC according to claim 12, is characterized in that, described AC also comprises:
Second acquisition module, for obtaining the real time load information of this AC;
Issue module, if be greater than a preset value for the real time load information of this AC, issue reset command to the arbitrary AP in this AC coverage, and return the step of the real time load information of described this AC of acquisition;
3rd receiver module, for receiving the request of reaching the standard grade that described AP feeds back according to described reset command, and returns the step of the request of reaching the standard grade of the described AP of described response.
16. AC according to claim 15, is characterized in that, described AC also comprises:
Synchronization module, for being synchronized to the lightest AC of described load by the configuration information of described AP and associated user authentication charge information.
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