CN103533560B - The control method of switching between standby usage Access Control device AC and system - Google Patents

The control method of switching between standby usage Access Control device AC and system Download PDF

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CN103533560B
CN103533560B CN201310507524.5A CN201310507524A CN103533560B CN 103533560 B CN103533560 B CN 103533560B CN 201310507524 A CN201310507524 A CN 201310507524A CN 103533560 B CN103533560 B CN 103533560B
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ac
described
ap
opposite end
subsequent use
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CN201310507524.5A
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CN103533560A (en
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罗向征
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迈普通信技术股份有限公司
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Abstract

The present invention discloses control method and the system of a kind of switching between standby usage AC, it relates to communication technical field, it is possible to simplify AP design, and improves accuracy and the consistence of detection and switching. The method of the present invention mainly comprises: primary AC and AC for subsequent use is respectively to setting up communication passage between AP and carry out mutually heartbeat detection, and heartbeat detection result comprises: the available state mark of the opposite end AC that the available state mark of each AP and each AP detect; Primary AC and AC for subsequent use calculates the available coefficient of opposite end AC respectively according to heartbeat detection result; When the available coefficient of opposite end AC shows that opposite end AC is unavailable, primary AC or AC for subsequent use sends switching control order to each AP, from opposite end AC, AP is switched to this end and controls. Embodiments of the invention are mainly used in the process that AP is carried out managing control by primary AC and AC for subsequent use.

Description

The control method of switching between standby usage Access Control device AC and system

Technical field

The present invention relates to communication technical field, particularly relate to a kind of at standby usage AC(AccessController, Access Control device) between the control method of switching and system.

Background technology

Along with WLAN network size is increasing, in order to simplified network is safeguarded, in WLAN network struction, mostly adopt and concentrate AC and dispersion AP(AccessPoint, wireless access node) the networking mode that matches. In order to ensure network reliability, network uses two AC to lead standby form each other usually in disposing, AP can switch between primary AC and AC for subsequent use, accepts control and the management of primary AC or AC for subsequent use according to actual needs.

Concrete, in standby usage AC networking as shown in Figure 1, in order to reduce AC switching to the impact of Network, AP and primary AC all sets up, with AC for subsequent use, the passage that communicates. Under normal circumstances, AP is communicated with primary AC by communication passage, accepts control and the management of primary AC. AP is in the process communicated with primary AC, can judge that whether the communication passage between AP and primary AC is normal according to result of communication, when the communication passage that AP detects between primary AC and AP breaks down, AP initiates switches communication channels, use spare communication passage to communicate with AC for subsequent use, accept control and the management of AC for subsequent use, until communication recovery is normal between AP and primary AP, AP is just switched to the communication passage of primary AC again, accepts control and the management of primary AC.

In the process realizing above-mentioned switching between standby usage AC, contriver finds that in prior art, at least there are the following problems: because according to the result that business communicates, AP judges that whether the communication link state between AC and AP is normal, AP undertakes main detection and task switching, make AP design comparatively complicated, and the result that each AP detects self communication passage only represents indivedual state, can not accurately reflecting whether AC can use, each AP independently switches.

Summary of the invention

Embodiments of the invention provide control method and the system of a kind of switching between standby usage AC, it is possible to simplify AP design, and improve accuracy and the consistence of detection and switching.

For achieving the above object, embodiments of the invention adopt following technical scheme:

An aspect of of the present present invention, it is provided that a kind of control method of switching between standby usage AC, the method comprises:

Primary AC and AC for subsequent use sets up respectively and between all wireless access node AP under its management and communicates passage and carry out mutually heartbeat detection, wherein, described primary AC and described AC for subsequent use opposite end AC each other, heartbeat detection result comprises: the available state mark of the opposite end AC that the available state of each AP identifies and each AP detects in described all AP;

Described primary AC and described AC for subsequent use calculates the available coefficient of opposite end AC respectively according to heartbeat detection result;

When the available coefficient of described opposite end AC shows that opposite end AC is unavailable, described primary AC or described AC for subsequent use sends switching control order to described all AP, from opposite end AC, described all AP is switched to this end and controls.

The another aspect of the present invention, also provides the Controlling System of a kind of switching between standby usage AC, comprising: primary AC, AC for subsequent use and described primary AC and described AC for subsequent use manage under all AP; Wherein,

Described primary AC and AC for subsequent use is used for: sets up respectively and between all wireless access node AP under its management and communicate passage and carry out mutually heartbeat detection, acquisition heartbeat detection result; Wherein, described primary AC and described AC for subsequent use opposite end AC each other, described heartbeat detection result comprises: the available state mark of the opposite end AC that the available state of each AP identifies and each AP detects in described all AP; And the available coefficient of opposite end AC is calculated respectively according to heartbeat detection result; When the available coefficient of described opposite end AC shows that opposite end AC is unavailable, described primary AC or described AC for subsequent use sends switching control order to described all AP, from opposite end AC, described all AP is switched to this end and controls;

Described AP is used for: carry out mutually heartbeat detection with described primary AC and described AC for subsequent use respectively; When receiving the described switching control order that described primary AC or described AC for subsequent use sends, it is switched to the transmission side AC of described switching control order, accepts the Access Control of described transmission side AC.

The control method of the switching between standby usage AC that the embodiment of the present invention provides and system, calculated the available coefficient of opposite end AC respectively according to heartbeat detection result by primary AC and AC for subsequent use, when judging that opposite end AC is unavailable, from opposite end AC, AP is switched to this end control, compared with the technology initiating switching in prior art when AP detects link fault again, determine whether opposite end AC can use by AC by statistics, and unify to control each AP by AC and switch, not only simplify AP design, also improve accuracy and the consistence of switching.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is a kind of standby usage AC networking schematic diagram introduced in background technology;

Fig. 2 is the control method flow diagram of a kind of switching between standby usage AC in one embodiment of the invention;

Fig. 3 is the control method flow diagram of a kind of switching between standby usage AC in another embodiment of the present invention;

Fig. 4 be in another embodiment of the present invention AP respond AC for subsequent use send switching control order complete switching change procedure schematic diagram;

Fig. 5 be in another embodiment of the present invention AP respond AC for subsequent use send switchback control command complete switching change procedure schematic diagram.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.

One embodiment of the invention provides a kind of control method of switching between standby usage AC, and as shown in Figure 2, the method can comprise:

101, primary AC and AC for subsequent use sets up respectively and between all AP under its management and communicates passage and carry out mutually heartbeat detection, wherein, the heartbeat detection result that described primary AC and described AC for subsequent use opposite end AC each other, primary AC and AC for subsequent use obtain respectively comprises: the available state mark of the opposite end AC that the available state of each AP identifies and each AP detects in described all AP.

Wherein, with reference to figure 1, management and the control function of primary AC and AC for subsequent use are reciprocity, and therefore all AP under primary AC management are exactly all AP that AC for subsequent use to be managed. Each AP establishes communication passage with primary AC, also establishes communication passage with AC for subsequent use simultaneously, like this when fault occurs one of them AC, just can be switched to another AC in time. It should be appreciated that said opposite end AC is comparatively speaking in this specification sheets, for primary AC, AC for subsequent use is opposite end AC, and for AC for subsequent use, primary AC is opposite end AC. Only backup each other description with two AC in FIG, practical application can use and form backup groups more than two AC, reach the object ensureing network reliability.

102, described primary AC and described AC for subsequent use calculates the available coefficient of opposite end AC respectively according to heartbeat detection result.

Wherein, in the heartbeat detection message being sent to primary AC and AC for subsequent use, the available status information of the opposite end AC of destination AC is carried due to AP, so when primary AC or AC for subsequent use receives the heartbeat detection message of AP, not only obtain the detected result that the AP sending this heartbeat detection message is available state, obtain the available status information of opposite end AC in heartbeat detection message simultaneously. Such as, if AP1 receives the heartbeat detection message of primary AC, determining that primary AC can use, then the heartbeat detection message sent to AC for subsequent use carries the available state mark of primary AC, receiving the heartbeat detection message of AP1 due to AC for subsequent use so obtaining the available state mark of AP1 simultaneously; Otherwise, if AP1 can not determine that primary AC can use (generalized case is the heartbeat detection message not receiving AC for subsequent use), then send heartbeat detection message to AC for subsequent use, do not carry the available state mark of primary AC or carry the unavailable state mark of primary AC. With reason, if AP1 receives the heartbeat detection message of AC for subsequent use, determining that AC for subsequent use can use, then the available state mark of carrying about standby AC in the heartbeat detection message sent to primary AC, receiving the heartbeat detection message of AP1 due to primary AC so obtaining the available state mark of AP1 simultaneously; Otherwise repeat no more.

103, when the available coefficient of described opposite end AC shows that opposite end AC is unavailable, described primary AC or described AC for subsequent use sends switching control order (switchover) to described all AP, from opposite end AC, described all AP is switched to this end and controls.

Optionally, when the available coefficient of described opposite end AC shows that opposite end AC is available, described primary AC or described AC for subsequent use sends switchback control command (switchback) to described all AP, from this end-grain cutting, described all AP is changed to opposite end AC and controls.

Further, in order to can provide opposite end AC accurately whether can statistics, it is possible to adopt following heartbeat detection and method of calculation, as shown in Figure 3, specific as follows:

201, system initialize.

Wherein, in WLAN, AP sets up CAPWAP respectively successively by network and communicates passage with primary AC, AC for subsequent use, and after successfully setting up communication passage, control all between AC and AP and data corresponding are all carried by CAPWAP passage. Wherein heartbeat detection between AC and AP is the important control communication of a class of CAPWAP passage carrying, circulates a notice of self available state for AC and AP to the other side, and the object that the Channel health that communicated by CAPWAP detects.

In system initialisation phase, the state machine of self maintained and status information can be carried out initial value setting by AC and AP, and particular content practical application scene is closely related, and belongs to prior art, and the present invention does not do detailed explanation. It is noted that to the definition of role primary and backup between AC in this specification sheets, namely determined in the initialize stage, follow-up no longer according to AC state switching and change, its objective is as simplified characterization, do not affect invention flesh and blood. Meanwhile, according to different practical application scene, can adopting other non-CAPWAP tunnel signalling methods between AC and AP, this kind of change does not affect the application of methods involving of the present invention.

Before starting heartbeat detection, standby usage AC and AP can also carry out heartbeat detection flow process initialize. Starting stage, each AP in network is that standby usage AC arranges available state mark respectively. Such as, primary AC can be identified by state (MasterOK) and value that AC for subsequent use can identify (SlaveOK) by state is all set to initial value 0. Meanwhile, AC safeguards an online mark (ApOnline [i]) for each AP, and for opposite end AC(master is for AC opposite end AC each other) safeguard that an opposite end AC can by mark quantity (PeerNotify). Wherein i represents the numbering of AP, whether the value of ApOnline [i] represents AC and receives to the heartbeat detection message of i-th AP in one-period, PeerNotify represent each AP that AC receives under its management within a statistics cycle report opposite end AC can cumulative number. AC is that opposite end AC safeguards that opposite end state (PeerState) and opposite end can with coefficient (PeerAvailRate). Wherein the value of PeerState represents whether opposite end AC can use, and is determined by the value of PeerAvailRate; PeerAvailRate is then by the opposite end AC operability level that calculates after statistics ApOnline [i] and PeerNotify, be judge opposite end AC whether can basic data. In addition, AC is the AP sum that statistics is currently in available state, i.e. available AP quantity, safeguards a counter SumOfAPs. In initialize flow process, PeerState is set to available (OK) by AC, and all the other optimum configurations are 0.

Next, after completing system initialize, network enters normal operating condition, in this case, in system except control conventional between AC and AP communicates with business datum, also has an important task, namely by heartbeat detection communication between main standby AC and AP, specific as follows:

202, primary AC and AC for subsequent use sends heartbeat detection message respectively to each AP.

Wherein, primary AC, by primary communication passage, sends heartbeat detection message to AP; AC for subsequent use, also by spare communication passage, sends heartbeat detection message to AP.

203, the AP receiving described heartbeat detection message determines that the transmission side AC of described heartbeat detection message is available state, and described transmission side AC comprises primary AC or AC for subsequent use.

Wherein, i-th AP, namely AP [i] receives the heartbeat detection message that primary AC sends, it is determined that primary AC can use, and arranges local MasterOK=1; Equally, if receiving the heartbeat message that AC for subsequent use sends, it is determined that AC for subsequent use can use, local SlaveOK=1 is set. As shown in table 1, for CAPWAP tunnel, the form of heartbeat detection message can such as the form of table 1.

IP head UDP head CAPWAP head TLV field Self-defined field

Table 1

Wherein, IP head, UDP head, CAPWAP head and TLV field all follow the agreement of CAPWAP consensus standard. TLV(type length value, TypeLengthValue) field comprises type, length and value three parts, such as Type=35, Len=16, Value=SessionID. For the heartbeat detection message that AC issues to AP, self-defined field is without meaning. When AP sends heartbeat detection message to AC, it is possible to carry the available state mark of opposite end AC in self-defined field, such as, VendorID=**(32bit), ElementID=##(16bit) and, Value=OK or NotOK.

204, AP sends heartbeat detection message to described primary AC and described AC for subsequent use, and carries the available state mark of the opposite end AC of destination AC in described heartbeat detection message.

Wherein, AP [i], by communication passage, sends heartbeat detection message to primary AC, and carrying about standby AC can identify " SlaveOK " by state in heartbeat detection message; Equally, AP [i] sends heartbeat detection message to AC for subsequent use, and carries primary AC in heartbeat detection message and can identify " MasterOK " by state. After being sent completely, AP [i] resets local standby usage AC and can identify by state, and namely to arrange MasterOK be 0, SlaveOK is 0. Then, described primary AC and described AC for subsequent use receives the heartbeat detection message of all AP under its management, according to the heartbeat detection message received, by following step 205 and 206 statistics heartbeat detection results.

205, primary AC and AC for subsequent use adds up the available state mark of the AP received respectively, obtains available AP quantity.

Wherein, primary AC and AC for subsequent use calculates the AP sum being in normal communication state respectively, i.e. available AP quantity. Assuming that primary AC and AC for subsequent use have n AP under managing, primary AC, at the appointed time in the cycle, travels through ApOnline [0] successively ... ApOnline [n-1]. In ergodic process, when ApOnline [i] equals 1, then think that AP [i] is in available state, and AP [i] passage is in available state with communicating between primary AC, this AP [i] is added to available AP quantity SumOfAPs, namely SumOfAPs adds 1; Otherwise judge that AP [i] is in error state (ERST), SumOfAPs is not added up. Equally, AC for subsequent use is also within the identical time cycle, it may also be useful to the available state of the AP [i] that same procedure detection communicates with AC for subsequent use, and accumulative SumOfAPs. After completing accumulative SumOfAPs, standby usage AC resets the available state mark of each AP respectively, namely arranges the ApOnline [0] that this AC safeguards ... ApOnline [n-1] is 0.

The available state mark of the described opposite end AC that 206, primary AC and AC for subsequent use statistics receives, obtaining opposite end AC can with identifying quantity.

Wherein, to receiving, the heartbeat detection message from AP [i] processes primary AC, first arrange AP [i] at line states ApOnline [i]=1, and obtain the opposite end AC carried in heartbeat detection message and can identify by state, it is the SlaveOK mark that AP provides, opposite end AC can be added to opposite end AC by state mark by primary AC with in mark quantity (PeerNotify), also can add 1 by PeerNotify exactly. For convenience of description, being only described with the process of primary AC here, process and the primary AC of AC for subsequent use are similar, are no longer described in detail.

207, described opposite end AC by mark quantity divided by the product of described available AP quantity and heartbeat detection frequency, can be obtained the available coefficient of described opposite end AC by primary AC and AC for subsequent use.

Wherein, with, in the same time cycle of step 205 and 206, primary AC calculates the available coefficient of regime (PeerAvailRate) of AC for subsequent use, calculation formula can be:

PeerAvailRate=PeerNotify/(SumofAPs �� DetFreq) formula 1

In equation 1, DetFreq represents the frequency that AP sends heartbeat detection message to primary AC. With reason, AC for subsequent use adopts identical method to calculate primary AC can use state. After completing computing, upper for this AC PeerNotify and SumOfAPs safeguarded is set to initial value 0 by standby usage AC separately. It is to be noted that when SumOfAPs is 0, no longer calculating opposite end AC can by state, and directly arranging PeerAvailRate is 2 or other particular values, represents opposite end AC operability and is in unknown state. For convenience of description, being only described with the process of primary AC here, process and the primary AC of AC for subsequent use are similar, are no longer described in detail.

By above-mentioned heartbeat detection and statistics, complete primary AC to be detected with the Channel health that communicates between state and primary AC and AP by AP simultaneously, AP can be detected by AC for subsequent use with the Channel health that communicates between state and AC and AP for subsequent use, primary AC can by state-detection to AC for subsequent use, and primary AC can be used state-detection by AC for subsequent use.

Below, the available coefficient of opposite end AC obtained according to above-mentioned steps statistics, it is possible to carry out opposite end AC whether can judgement, concrete such as following step 207 and 208. It should be noted that, step 207 and 208 is optional step, when opposite end AC can satisfy condition with coefficient of regime, and under in the upper cycle, opposite end AC is in specific available state, just can carry out switching or switchback.

208, when the available coefficient of described opposite end AC is lower than the first threshold value, described primary AC or described AC for subsequent use sends switching control order to described all AP, from opposite end AC, described all AP is switched to this end and controls.

In the present embodiment, it is possible to undertaken by AC for subsequent use switching or the issuing of switchback control command, concrete such as following step 2081-2089:

Step 2081: the primary AC operability level of AC periodic evaluation for subsequent use. AC for subsequent use is at the appointed time in the cycle, judges that primary AC can with state computation result PeerAvailRate. If PeerAvailRate is 2, opposite end AC Status unknown is described, terminates this process.

Step 2082: if PeerAvailRate is less than 0.5, AC for subsequent use judges that primary AC is currently unavailable, performs step 2083, otherwise performs step 2087.

Step 2083: AC for subsequent use detects primary AC can use state PeerState, if PeerState=OK, illustrates that primary AC is in available state before this cycle, performs step 2074, otherwise performs step 2075.

Step 2084: AC for subsequent use starts active-standby switch control, by communication passage, AC for subsequent use holds all AP to send switching order " SWITCHOVER " downwards.

Step 2085: current for primary AC state is set to unavailable by AC for subsequent use, is set to NotOK by PeerState, and exit epicycle process.

Step 2086: if PeerAvailRate is not less than 0.8, AC for subsequent use judges that primary AC is in available state, performs step 2077.

Step 2087: AC for subsequent use detects the current state PeerState of primary AC, if PeerState=NotOK, illustrates that primary AC is in unavailable state before this cycle, according to configuration needs, initiatively switchback operation can be started, perform step 2088, otherwise perform step 2089.

Step 2088: AC for subsequent use starts main standby switchback control, by control release, again cuts back primary AC, and by communication passage, AC for subsequent use sends switchback order " SWITCHBACK " to all lower end AP.

Step 2089: primary AC is set to available state by AC for subsequent use, is set to OK by PeerState, exits epicycle process.

209, when the available coefficient of described opposite end AC is higher than Second Threshold, described primary AC or described AC for subsequent use sends switchback control command to described all AP, from this end-grain cutting, described all AP is changed to opposite end AC and controls.

In practical application; primary AC can also start switching or switchback operation as required, especially when primary AC needs hesitation because of system maintenance, by the mode of active switchback; AC for subsequent use is given, it is possible to reduce the impact on business datum communication when primary AC exits service by control right transfer. The treatment scheme that primary AC initiatively carries out switching or switchback controls is such as following step 2091-2098:

Step 2091: primary AC periodic evaluation AC operability level for subsequent use. Primary AC is at the appointed time in the cycle, judges that AC for subsequent use can with state computation result PeerAvailRate. If PeerAvailRate is 2, opposite end AC Status unknown is described, terminates this process.

Step 2092: if PeerAvailRate is not less than 0.8, primary AC judges that AC for subsequent use is in available state, performs step 2093.

Step 2093: primary AC can initiate initiatively switchback control, exits service, transfer control, concrete behavior is: primary AC holds all AP to send order " SWITCHBACK " downwards.

Step 2094: it is available state that primary AC arranges AC for subsequent use, is set to OK by PeerState.

Step 2095: if PeerAvailRate is less than 0.5, primary AC judges that AC for subsequent use is in unavailable state, performs step 2096.

Step 2096: primary AC judges the current available state of AC for subsequent use, if PeerState=OK, illustrates that AC for subsequent use is in available state before this cycle, then perform step 2087, otherwise perform step 2088.

Step 2097: primary AC starts force handoff control, it is desired to AP forces the control stopping accepting AC for subsequent use, cuts back and controls by primary AC, serves as the Controlling vertex of WLAN by primary AC, and concrete behavior is: primary AC holds AP to send order " SWITCHOVER " downwards.

Step 2098: it is unavailable that primary AC arranges the current state of AC for subsequent use, namely arranging PeerState is NotOK, exits epicycle process.

Adopt aforesaid method, the switching of main standby AC, switchback condition judgment, control operation concentrate on standby usage AC, carry out unifying process, lower end AP is only as the execution unit of control operation, can namely be responded at the very first time point that switching or switchback control operation send and be performed, avoid each AP independent judgment result discordance, also eliminate the time delay just starting communication passage detection when fault occurs, effectively reduce the interruption of service time.

It is to be noted that AvailiabilityRate value is less than by above-mentioned flow process 0.5 as the unavailable standard of opposite end AC, be not less than 0.8 as opposite end AC can standard, realization can do different values according to system practical situation, it is even possible that allow user to arrange as required, concrete value difference does not affect the design philosophy of the present invention.

AP under standby usage AC management receives switching control order or the switchback control command that AC sends, and treatment scheme is very simple, and flow process is as follows:

Step 301:AP judges control command Type C tlCmdType

Step 302: if control command is blocked operation, i.e. CtlCmdType=SWITCHOVER, performs step 303, otherwise performs step 304.

Primary communication passage bridge to receiving passage corresponding to control command, is completed the switching action of main standby AC, exits this process by step 303:AP.

Step 304: if control command is switchback operation, i.e. CtlCmdType=SWITCHBACK, performs step 305, otherwise performs step 306.

Primary communication passage bridge to another passage different from receiving control command passage, is completed the switchback action of primary AC by step 305:AP.

Step 307: exit epicycle process.

Wherein, AP responds switching control order or the switchback control command that AC sends, do not need to be concerned about that control command derives from primary AC or AC for subsequent use, the state of AC corresponding to the passage currently used is not needed to be concerned about yet, only need according to command type, select the communication passage ordering source or another passage that the communicates communication passage as subsequent communications, greatly simplifiing AP can by the process logic in state-detection, switching control process at the main standby AC of cooperation, improve state-detection accuracy, consistence, improve the promptness of blocked operation simultaneously.

Fig. 4, Fig. 5 illustrate that AP is after receiving SWITCHOVER or SITCHBACK control command respectively, the result of the passage changing role that communicates between AP and AC.

The control method of the switching between standby usage AC that the embodiment of the present invention provides, calculated the available coefficient of opposite end AC respectively according to heartbeat detection result by primary AC and AC for subsequent use, when judging that opposite end AC is unavailable, from opposite end AC, AP is switched to this end control, compared with the technology initiating switching in prior art when AP detects link fault again, determine whether opposite end AC can use by AC by statistics, and unify to control each AP by AC and switch, not only simplify AP design, also improve accuracy and the consistence of switching.

Further embodiment of this invention provides the Controlling System of a kind of switching between standby usage AC, it is possible to reference to the system composition shown in figure 1,4 and 5, this system comprises: all AP under primary AC, AC for subsequent use and described primary AC and described AC for subsequent use management; Wherein,

Described primary AC and AC for subsequent use is used for: sets up respectively and between all wireless access node AP under its management and communicate passage and carry out mutually heartbeat detection, acquisition heartbeat detection result; Wherein, described primary AC and described AC for subsequent use opposite end AC each other, described heartbeat detection result comprises: the available state mark of the opposite end AC that the available state of each AP identifies and each AP detects in described all AP; And the available coefficient of opposite end AC is calculated respectively according to heartbeat detection result; When the available coefficient of described opposite end AC shows that opposite end AC is unavailable, described primary AC or described AC for subsequent use sends switching control order to described all AP, from opposite end AC, described all AP is switched to this end and controls;

Described AP is used for: carry out mutually heartbeat detection with described primary AC and described AC for subsequent use respectively; When receiving the described switching control order that described primary AC or described AC for subsequent use sends, it is switched to the transmission side AC of described switching control order, accepts the Access Control of described transmission side AC.

Further, described AP also for: after receiving the described heartbeat detection message that described primary AC and AC for subsequent use sends, it is determined that the transmission side AC of described heartbeat detection message is available state, and described transmission side AC comprises primary AC or AC for subsequent use; To described primary AC and described transmission heartbeat detection message for subsequent use, and in described heartbeat detection message, carry the available state mark of the opposite end AC of destination AC.

Further, described primary AC and AC for subsequent use also for:

The available state mark of the AP that statistics receives, obtains available AP quantity;

The available state mark of the described opposite end AC that statistics receives, obtaining opposite end AC can with identifying quantity;

Described opposite end AC by mark quantity divided by the product of described available AP quantity and heartbeat detection frequency, can be obtained the available coefficient of described opposite end AC.

Further, the available coefficient of described opposite end AC shows that opposite end AC is unavailable, comprising: the available coefficient of described opposite end AC is lower than the first threshold value.

Further, described primary AC or described AC for subsequent use also for: when the available coefficient of described opposite end AC is higher than Second Threshold, sends switchback control command to described all AP, described all AP changed to opposite end AC from this end-grain cutting and controls;

Described AP also for: after receiving described switchback control command, be switched to the opposite end AC of the transmission side AC of described switchback control command, accept the Access Control of described opposite end AC.

The Controlling System of the switching between standby usage AC that the embodiment of the present invention provides, calculated the available coefficient of opposite end AC respectively according to heartbeat detection result by primary AC and AC for subsequent use, when judging that opposite end AC is unavailable, from opposite end AC, AP is switched to this end control, compared with the system initiating switching in prior art when AP detects link fault again, determine whether opposite end AC can use by AC by statistics, and unify to control each AP by AC and switch, not only simplify AP design, also improve accuracy and the consistence of switching.

Through the above description of the embodiments, the technician of art can be well understood to the present invention and can realize by the mode that software adds required general hardware, naturally it is also possible to by hardware, but in a lot of situation, the former is better enforcement mode. Based on such understanding, the technical scheme of the present invention in essence or says that part prior art contributed can embody with the form of software product, this computer software product is stored in the storage media that can read, such as the floppy disk of computer, hard disk or CD etc., comprise some instructions with so that a computer equipment (can be Personal Computer, server, or the network equipment etc.) performs the method described in each embodiment of the present invention.

The above; it is only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any it is familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.

Claims (10)

1. the control method of a switching between standby usage Access Control device AC, it is characterised in that, the method comprises:
Described primary AC and described AC for subsequent use sets up respectively and between all wireless access node AP under its management and communicates passage and carry out mutually heartbeat detection, wherein, and described primary AC and described AC for subsequent use opposite end AC each other;
Described primary AC and described AC for subsequent use calculates the available coefficient of opposite end AC respectively according to heartbeat detection result; Described heartbeat detection result comprises: the available state mark of the opposite end AC that the available state of each AP identifies and each AP detects in described all AP;
When the available coefficient of described opposite end AC shows that opposite end AC is unavailable, described primary AC or described AC for subsequent use sends switching control order to described all AP, from opposite end AC, described all AP is switched to this end and controls.
2. the control method of switching between standby usage Access Control device AC according to claim 1, it is characterised in that, described primary AC and described AC for subsequent use carries out mutually heartbeat detection with all wireless access node AP under its management respectively, comprising:
Described primary AC and described AC for subsequent use sends heartbeat detection message respectively to each AP in described all AP; The AP receiving described heartbeat detection message determines that the transmission side AC of described heartbeat detection message is available state, and described transmission side AC comprises primary AC or AC for subsequent use;
All AP send heartbeat detection message respectively to described primary AC and described AC for subsequent use, carry the available state mark of the opposite end AC of destination AC in described heartbeat detection message;
Described primary AC and described AC for subsequent use receives the heartbeat detection message of all AP under its management, obtains heartbeat detection result.
3. the control method of switching between standby usage Access Control device AC according to claim 1 and 2, it is characterised in that, the described available coefficient calculating opposite end AC according to heartbeat detection result, comprising:
The available state mark of the AP that statistics receives, obtains available AP quantity;
The available state mark of the described opposite end AC that statistics receives, obtaining opposite end AC can with identifying quantity;
Described opposite end AC by mark quantity divided by the product of described available AP quantity and heartbeat detection frequency, can be obtained the available coefficient of described opposite end AC.
4. the control method of switching between standby usage Access Control device AC according to claim 3, it is characterised in that, the available coefficient of described opposite end AC shows that opposite end AC is unavailable, comprising: the available coefficient of described opposite end AC is lower than the first threshold value.
5. the control method of switching between standby usage Access Control device AC according to claim 4, it is characterised in that, also comprise:
When the available coefficient of described opposite end AC is higher than Second Threshold, described primary AC or described AC for subsequent use sends switchback control command to described all AP, from this end-grain cutting, described all AP is changed to opposite end AC and controls.
6. the Controlling System of a switching between standby usage Access Control device AC, it is characterised in that, comprising: primary AC, AC for subsequent use and described primary AC and described AC for subsequent use manage under all AP; Wherein,
Described primary AC is used for AC for subsequent use: sets up with all wireless access node AP under its management respectively and communicates passage and carry out mutually heartbeat detection, obtains heartbeat detection result; Wherein, described primary AC and described AC for subsequent use opposite end AC each other, described heartbeat detection result comprises: the available state mark of the opposite end AC that the available state of each AP identifies and each AP detects in described all AP; And the available coefficient of opposite end AC is calculated respectively according to heartbeat detection result; When the available coefficient of described opposite end AC shows that opposite end AC is unavailable, described primary AC or described AC for subsequent use sends switching control order to described all AP, from opposite end AC, described all AP is switched to this end and controls;
Described AP is used for: carry out mutually heartbeat detection with described primary AC and described AC for subsequent use respectively; When receiving the described switching control order that described primary AC or described AC for subsequent use sends, it is switched to the transmission side AC of described switching control order, accepts the Access Control of described transmission side AC.
7. the Controlling System of switching between standby usage Access Control device AC according to claim 6, it is characterised in that,
Described AP also for: after receiving the heartbeat detection message that described primary AC and AC for subsequent use send, it is determined that the transmission side AC of described heartbeat detection message is available state, and described transmission side AC comprises primary AC or AC for subsequent use; To described primary AC and described transmission heartbeat detection message for subsequent use, and in described heartbeat detection message, carry the available state mark of the opposite end AC of destination AC.
8. according to claim 6 or 7 between standby usage Access Control device AC switching Controlling System, it is characterised in that, described primary AC and AC for subsequent use also for:
The available state mark of the AP that statistics receives, obtains available AP quantity;
The available state mark of the described opposite end AC that statistics receives, obtaining opposite end AC can with identifying quantity;
Described opposite end AC by mark quantity divided by the product of described available AP quantity and heartbeat detection frequency, can be obtained the available coefficient of described opposite end AC.
9. the Controlling System of switching between standby usage Access Control device AC according to claim 8, it is characterised in that, the available coefficient of described opposite end AC shows that opposite end AC is unavailable, comprising: the available coefficient of described opposite end AC is lower than the first threshold value.
10. the Controlling System of switching between standby usage Access Control device AC according to claim 9, it is characterized in that, described primary AC or described AC for subsequent use also for: when the available coefficient of described opposite end AC is higher than Second Threshold, send switchback control command to described all AP, described all AP are changed to opposite end AC from this end-grain cutting and controls;
Described AP also for: after receiving described switchback control command, be switched to the opposite end AC of the transmission side AC of described switchback control command, accept the Access Control of described opposite end AC.
CN201310507524.5A 2013-10-24 2013-10-24 The control method of switching between standby usage Access Control device AC and system CN103533560B (en)

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