CN103249075A

CN103249075A - Access point (AP) fault detecting and recovering method and device

Info

Publication number: CN103249075A
Application number: CN2013102112755A
Authority: CN
Inventors: 谯良刚; 罗向征
Original assignee: Maipu Communication Technology Co Ltd
Current assignee: Maipu Communication Technology Co Ltd
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-08-14
Anticipated expiration: 2033-05-31
Also published as: CN103249075B

Abstract

The embodiment of the invention discloses an access point (AP) fault detecting and recovering method and device, relating to the technical field of communication. The method comprises the steps: a self port of a switch is bound with the AP so as to generate a binding relation; the switch queries a table entry corresponding to the port according to the binding relation; the switch detects the queried table entry, and judges whether the AP has a fault; and if the AP has a fault, the switch recovers the AP. The method and the device disclosed by the invention are suitable for the fault detection and maintenance of the AP in a wireless network.

Description

Detection restoration methods and the device of access point fault

Technical field

The present invention relates to communication technical field, particularly a kind of detection restoration methods and device of access point fault.

Background technology

Along with the development of the development of the network communications technology, particularly radio network technique, the application of wireless network more and more widely, the user can use equipment such as portable terminal by AP(Access Point, access point) be linked in the wireless network easily.

In current WLAN (Wireless Local Area Networks, WLAN (wireless local area network)) network organizing, AP has been linked into POE(Power Over Ethernet, Power over Ethernet) switch of function, the POE switch is linked into convergence switch again.ACS(Access Control Server, access control server) being linked into core switch, DHCP(Dynamic Host Configuration Protocol, DHCP) server is linked in core switch or the convergence switch.When AP inserts the POE switch, carry out access control by the AP of ACS, and be AP allocation manager IP(Internet Protocol by Dynamic Host Configuration Protocol server, Internet protocol) address.When wireless terminal inserts AP, by ACS it is carried out access control, carry out IP address assignment by Dynamic Host Configuration Protocol server.

There are the following problems at least in the prior art: in the above-mentioned network organizing, when software fault appears in AP, can detect this fault by ACS, but can not the AP that break down be positioned, must be by the artificial AP that determines fault, and operation such as restart and repair AP.This method by artificial reparation AP fault often needs the long period, can't satisfy the demand of customer access network, has reduced the reliability of wireless network.

Summary of the invention

A kind of detection restoration methods and device of access point fault are provided, can solve the problem that to locate the access point that breaks down in the WLAN (wireless local area network), repair the access point fault automatically, improve the reliability of wireless network, promote the user and experience.

First aspect provides a kind of detection restoration methods of access point fault, comprising:

Switch is bound virtual LAN VLAN and access point AP under self port, self port, generates binding relationship;

Described switch is according to the described binding relationship inquiry list item corresponding with described port;

Described switch detects the described list item that inquires, and judges whether described AP breaks down;

If described AP breaks down, described switch recovers described AP.

Second aspect provides a kind of detection recovery device of access point fault, comprising:

Concern binding module, be used for virtual LAN VLAN under self port, self port is bound the generation binding relationship with access point AP;

Enquiry module is used for according to the described binding relationship inquiry list item corresponding with described port;

State detection module is used for the described list item that inquires is detected, and judges whether described AP breaks down;

The recovering state module is used for when described AP breaks down described AP being recovered.

Compared with prior art, the embodiment of the invention generates binding relationship by MAC Address and the IP address of the AP of the port of switch and access switch are bound; And regularly the AP in the binding relationship is detected, when detecting AP and break down, the position of the AP that can break down according to the binding relationship accurate in locating; Port to the AP access switch that breaks down carries out POE switch electricity, restarts AP.Thereby solved the problem that to locate the access point that breaks down in the existing WLAN (wireless local area network), realized locating the AP that breaks down fast automaticly, and fault is repaired.Improved the reliability of wireless network, promoted the user and experience.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

The method flow diagram that Fig. 1 provides for one embodiment of the invention;

The method flow diagram that Fig. 2-Fig. 6 provides for further embodiment of this invention;

The apparatus structure schematic diagram that Fig. 7 provides for further embodiment of this invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.

For the advantage that makes technical solution of the present invention is clearer, below in conjunction with drawings and Examples the present invention is elaborated.

One embodiment of the invention provides a kind of detection restoration methods of access point fault, and as shown in Figure 1, described method comprises:

101, switch is bound self port and access point AP, generates binding relationship.

Wherein, described switch is bound self port and access point AP, the generation binding relationship comprises: described switch is with the VLAN(Virtual Local Area Network under self port, self port, VLAN) with the MAC(Media Access Control of described AP, media interviews control) bind address and IP address, generates binding relationship.

For example, described switch is bound the VLAN under self port, self port and MAC Address and the IP address of described AP, and generate binding relationship and comprise: described switch arranges sign flag for each described port; Described switch copies portion with the DHCP message of each described port and is sent to key-course and handles, and transmits; After one or more described ports power on, when described switch receives first DHCP(Dynamic Host Configuration Protocol by the port that powers on, when DHCP) finding message or first DHCP request message, flag value in the port that powers on is set to true, and record receives described DHCP and finds VLAN, the port of message or described DHCP request message and send the corresponding relation of media interviews control MAC Address that described DHCP finds the AP of message or described DHCP request message; The port of described switch receives the DHCP confirmation message, find corresponding binding list item according to the MAC Address of the requestor AP in the described DHCP confirmation message and the VLAN of the described DHCP confirmation message of reception in the corresponding relation of record, it is requestor AP IP address allocated that the IP address of recording in the described binding list item is updated in the described DHCP confirmation message.

102, switch is according to the binding relationship inquiry list item corresponding with port.

103, switch detects the list item that inquires, and judges whether AP breaks down.

For example, the detection strategy of described switch use setting detects the described list item that inquires and comprises: described switch is to the AP timed sending ARP(Address Resolution Protocol of described list item correspondence, address resolution protocol) request; Perhaps, described switch regularly detects the MAC Address of dynamic learning under the port of described list item; Perhaps, described switch is to the AP timed sending ICMP(Internet Control Messages Protocol of described list item correspondence, Internet Control Message Protocol) request message.

Further, describedly judge whether described AP breaks down and comprise: judge whether described list item satisfies preset requirement.For example, after the described switch timed sending ARP request, judge that whether the unresponsive number of times of ARP is more than or equal to first preset times; If more than or equal to first preset times, judge that then described list item satisfies preset requirement; Perhaps, when described switch detects the MAC Address of dynamic learning under the port of described list item, judge whether not detect the number of times of MAC Address more than or equal to second preset times; If more than or equal to second preset times, judge that then described list item satisfies preset requirement; Perhaps, behind the described switch timed sending ICMP request message, judge that whether the unresponsive number of times of message is more than or equal to the 3rd preset times; If more than or equal to the 3rd preset times, judge that then described list item satisfies preset requirement.

If 104 AP break down, switch recovers AP.

For example, described switch is closed the power supply with described AP corresponding port in list item, makes described port become power-down state; Described switch recovers power supply and the log information with described AP corresponding port in list item after waiting for setting-up time.

Compared with prior art, the embodiment of the invention generates binding relationship by MAC Address and the IP address of the AP of the port of switch and access switch are bound; And regularly the AP in the binding relationship is detected, when detecting AP and break down, the position of the AP that can break down according to the binding relationship accurate in locating; Port to the AP access switch that breaks down carries out POE(Power Over Ethernet, Power over Ethernet) the switch electricity, restart AP.Thereby solved the problem that to locate the access point that breaks down in the existing WLAN (wireless local area network), realized locating the AP that breaks down fast automaticly, and fault is repaired.Improved the reliability of wireless network, promoted the user and experience.

Further embodiment of this invention provides a kind of detection restoration methods of access point fault, be applied to AP and switch in the WLAN scene, switch comprises four main functional modules, strategic control module, concern binding module, state detection module and recovering state module, at first be configured detecting strategy, as shown in Figure 2, described method comprises:

201, switch is revised the time-out time of state-detection mode, the state-detection time interval and state-detection by strategic control module.

For example, the state-detection mode can comprise following three kinds: regularly send the ARP request to AP, the management address of request AP if the overtime no response number of times of AP reaches certain number of times, thinks that then AP breaks down; Perhaps, regularly the MAC Address under the detection port does not reach certain number of times if detect the number of times of MAC Address, thinks that then AP breaks down; Perhaps, regularly send the ICMP request message to AP, the destination is the management address of AP, if the overtime no response number of times of AP reaches certain number of times, thinks that then AP breaks down.Above-mentioned detection mode only is several in numerous detection modes, can also comprise other detection mode, concrete detection mode is not limited herein.

202, switch is notified to state detection module with amended detected parameters, the detected parameters in the update mode detection module.

Further, as shown in Figure 3, recovery policy is configured, comprises:

301, switch is revised recovery policy by strategic control module.

For example, recovery policy can comprise: restart AP and log information; Perhaps, ignore this time unusually, only log information.

302, switch is notified to the recovering state module with amended recovery parameter, and update mode is recovered the recovery parameter in the module.

Further, after the configuration of finishing above-mentioned detection strategy and recovery policy, switch and AP are bound, are obtained binding relationship, as shown in Figure 4, comprising:

401, switch arranges a sign flag for each port, and the value of flag is set to false.

Wherein, the effect of flag is after port powers on, and judges that whether this port has received first DHCP request message, if receive first DHCP request message, then is revised as true with the flag value.After value is revised as true, if receive the DHCP request message again then directly abandon this message and discharge buffer memory.

402, switch DHCP message that all of the port is received copies and aly transmits to key-course and according to exchange regulation.

403, be that each port is according to sense cycle and timer of assay intervals startup of configuration.

404, judge whether the message that receives is DHCP Discover message or DHCP Request message, if not, execution in step 410; If, execution in step 405.

405, judge whether to enable the fault restoration function of AP, if the fault restoration function of not enabled AP, execution in step 410; If enabled the fault restoration function of AP, execution in step 406.

406, from message, obtain the MAC Address of AP, determine to receive VLAN and the port of described message.

407, search the list item that whether exists with the MAC Address of obtaining and VLAN coupling, if there is no Pi Pei list item, execution in step 408; If have the list item of coupling, execution in step 409.

408, increase new list item according to the MAC Address of message, the VLAN that receives described message and port.

409, revise the port information of list item.

410, dropping packets discharges packet buffer.

Further, obtain the IP address information by receiving DHCP ACK message, improve binding relationship.

411, judge whether the message that receives is DHCP ACK message, if not, execution in step 416; If, execution in step 412.

412, from message, obtain the MAC Address of AP and for the AP IP address allocated.

413, determine to receive the VLAN of message.

414, search corresponding list item according to MAC and VLAN, if there is no Dui Ying list item, execution in step 416; If have corresponding list item, execution in step 415.

415, upgrade the IP address of this list item.

416, dropping packets discharges packet buffer.

So far finish the binding of AP and switch.

Optionally, after the binding of finishing AP and switch is finished, if the port of switch is received DHCP Release message, according to MAC Address, the IP address of the AP in the message and receive the port of this message and VLAN searches list item in the binding relationship, if find this list item, then delete the IP address of this list item; If do not find this list item, then abandon this message, discharge packet buffer.

Optionally, if the situation of electricity down appears in the port in the binding relationship, then judge the fault restoration function whether enable AP this moment; If not enabled fault restoration function, then process ends; If enabled the fault restoration function, then in binding relationship, search list item according to electric down port; If find list item, then with the list item deletion that finds; If do not find list item, then the flag of this port is set to false.

Optionally, if after port powers on, restart the fault restoration function, then need with this port PO E switch electricity once, and the flag of port is set to false.The purpose of doing like this is in order to make port can carry out the flow process of above-mentioned binding relationship.

Further, after the relation binding of finishing above-mentioned AP and switch, according to the detection strategy that disposes before each AP is carried out state-detection, as shown in Figure 5, comprising:

501, when the timer expiry of AP corresponding port, according to the corresponding list item of binding relationship inquiry, if do not inquire corresponding list item, execution in step 505; If inquire corresponding list item, execution in step 502.

502, whether the expired times of judging the timer of this list item correspondence reach pre-determined number, if reach pre-determined number, and execution in step 504; If do not reach pre-determined number, execution in step 503.

503, continue port is carried out state-detection.For example, the process of the detection before the port timer expiry comprises: judge whether list item is complete, mainly judge according to MAC Address, IP address, vlan information and port information, the direct process ends if this list item is imperfect; Further detect if this list item is complete, further detection can be used several different methods, only provide a kind of example below: construct an ARP message, requestor IP in the message is the IP in the list item, requestor MAC in the message is that full 0(is 0000.0000.0000), source IP address and source MAC all are complete 0.The ether purpose MAC of message is that full F(is FFFF.FFFF.FFFF), ether source MAC is the MAC Address of switch.Send from the port of appointment, the VLAN of appointment then.Timer expiry is set waits for that AP receives this ARP message; Judge whether AP had received legal ARP message before overtime, if not, then the expired times with this port add 1; If then empty the expired times of port.Use other detection methods similar in the method, not in this independent description.

504, send a notification message to the recovering state module, this AP is recovered.

Wherein, carry port information in the notification message.

505, replacement port timer.

Further, the recovering state module is recovered AP after receiving the notification message that state detection module sends, and as shown in Figure 6, comprising:

601, according to the inquiry of the port information in notification message binding relationship, judge whether and to inquire binding relationship according to the port information in the notification message, if do not inquire binding relationship, process ends; If inquire binding relationship, execution in step 602.

602, close the POE power supply of this port and the state of port, recover the POE power supply of this port and the state of port behind the wait certain hour, and log information.

For example, the certain hour of wait can be 2 seconds, perhaps other up duration length.

Optionally, can judge whether earlier to carry out recovery operation before execution in step 602, if desired, execution in step 602 is not if need then directly finish yet.

Further embodiment of this invention provides a kind of detection recovery device 70 of access point fault, and as shown in Figure 7, described device 70 comprises:

Concern binding module 71, be used for self port and access point AP are bound, generate binding relationship;

Enquiry module 72 is used for according to the described binding relationship inquiry list item corresponding with described port;

State detection module 73 is used for the described list item that inquires is detected, and judges whether described AP breaks down;

Recovering state module 74 is used for when described AP breaks down described AP being recovered.

Wherein, the described binding module 71 that concerns specifically is used for:

Virtual LAN VLAN under self port, the described port and MAC Address and the IP address of described AP are bound, generate binding relationship.

Further, the described binding module 71 that concerns specifically also is used for:

For each described port arranges sign flag; The DHCP message of each described port is copied portion be sent to key-course and handle, and transmit; After one or more described ports power on, when receiving first dynamic host configuration protocol DHCP discovery message or first DHCP request message by the port that powers on, flag value in the port that powers on is set to true, and record receives described DHCP and finds virtual LAN VLAN, the port of message or described DHCP request message and send the corresponding relation of media interviews control MAC Address that described DHCP finds the AP of message or described DHCP request message; Receive the DHCP confirmation message by port, find corresponding binding list item according to the MAC Address of the requestor AP in the described DHCP confirmation message and the VLAN of the described DHCP confirmation message of reception in the corresponding relation of record, it is requestor AP IP address allocated that the IP address of recording in the described binding list item is updated in the described DHCP confirmation message.

Wherein, described state detection module 73 specifically also is used for: to the AP timed sending ARP request of described list item correspondence; Perhaps, regularly detect the MAC Address of dynamic learning under the port of described list item; Perhaps, to the AP timed sending Internet Control Message Protocol ICMP request message of described list item correspondence.

Further, described state detection module 73 also is used for: judge whether described list item satisfies preset requirement.

Further, described state detection module 73 specifically also is used for:

After timed sending ARP request, judge that whether the unresponsive number of times of ARP is more than or equal to first preset times; If more than or equal to first preset times, judge that then described list item satisfies preset requirement; Perhaps,

When the MAC Address of dynamic learning under the port that detects described list item, judge whether not detect the number of times of MAC Address more than or equal to second preset times; If more than or equal to second preset times, judge that then described list item satisfies preset requirement; Perhaps,

Behind timed sending ICMP request message, judge that whether the unresponsive number of times of message is more than or equal to the 3rd preset times; If more than or equal to the 3rd preset times, judge that then described list item satisfies preset requirement.

Wherein, described recovering state module 74 specifically is used for: close the power supply in the list item corresponding port with described AP, make described port become power-down state; After waiting for setting-up time, recover power supply and log information with described AP corresponding port in list item.

The above-mentioned method embodiment that provides can be provided the detection recovery device of the access point fault that the embodiment of the invention provides, and concrete function realizes seeing also the explanation among the method embodiment, does not repeat them here.The detection restoration methods of the access point fault that the embodiment of the invention provides and device go for fault detect and the maintenance of the access point in the wireless network, but are not limited only to this.

One of ordinary skill in the art will appreciate that all or part of flow process that realizes in above-described embodiment method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.

The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement 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 range of claim.

Claims

1. the detection restoration methods of an access point fault is characterized in that, comprising:

Switch is bound self port and access point AP, generates binding relationship;

If described AP breaks down, described switch recovers described AP.

2. method according to claim 1 is characterized in that, described switch is bound self port and access point AP, generates binding relationship and comprises:

Described switch is bound media interviews control MAC Address and the IP address of the virtual LAN VLAN under self port, the described port and described AP, generates binding relationship.

3. method according to claim 2 is characterized in that, described switch is bound the VLAN under self port, the described port and MAC Address and the IP address of described AP, generates binding relationship and comprises:

Described switch arranges sign flag for each described port;

Described switch copies portion with the DHCP message of each described port and is sent to key-course and handles, and transmits;

After one or more described ports power on, when described switch receives first dynamic host configuration protocol DHCP discovery message or first DHCP request message by the port that powers on, flag value in the port that powers on is set to true, and record receives described DHCP and finds virtual LAN VLAN, the port of message or described DHCP request message and send the corresponding relation of MAC Address that described DHCP finds the AP of message or described DHCP request message;

The port of described switch receives the DHCP confirmation message, find corresponding binding list item according to the MAC Address of the requestor AP in the described DHCP confirmation message and the VLAN of the described DHCP confirmation message of reception in the corresponding relation of record, it is requestor AP IP address allocated that the IP address of recording in the described binding list item is updated in the described DHCP confirmation message.

4. method according to claim 1 is characterized in that, the detection strategy that described switch use is set detects the described list item that inquires and comprises:

Described switch is to the AP timed sending ARP request of described list item correspondence; Perhaps,

Described switch regularly detects the MAC Address of dynamic learning under the port of described list item; Perhaps,

Described switch is to the AP timed sending Internet Control Message Protocol ICMP request message of described list item correspondence.

5. method according to claim 4 is characterized in that, describedly judges whether described AP breaks down and comprises: judge whether described list item satisfies preset requirement; Describedly judge whether described list item satisfies preset requirement and comprise:

After the described switch timed sending ARP request, judge that whether the unresponsive number of times of ARP is more than or equal to first preset times; If more than or equal to first preset times, judge that then described list item satisfies preset requirement; Perhaps,

When described switch detects the MAC Address of dynamic learning under the port of described list item, judge whether not detect the number of times of MAC Address more than or equal to second preset times; If more than or equal to second preset times, judge that then described list item satisfies preset requirement; Perhaps,

Behind the described switch timed sending ICMP request message, judge that whether the unresponsive number of times of message is more than or equal to the 3rd preset times; If more than or equal to the 3rd preset times, judge that then described list item satisfies preset requirement.

6. method according to claim 1 is characterized in that, described switch recovers to comprise to described AP:

Described switch is closed the power supply with described AP corresponding port in list item, makes described port become power-down state;

Described switch recovers power supply and the log information with described AP corresponding port in list item after waiting for setting-up time.

7. the detection recovery device of an access point fault is characterized in that, comprising:

Concern binding module, be used for self port and access point AP are bound, generate binding relationship;

8. device according to claim 7 is characterized in that, the described binding module that concerns specifically is used for:

Media interviews control MAC Address and the IP address of virtual LAN VLAN under self port, the described port and described AP are bound, generate binding relationship.

9. device according to claim 8 is characterized in that, the described binding module that concerns specifically also is used for:

For each described port arranges sign flag;

The DHCP message of each described port is copied portion be sent to key-course and handle, and transmit;

After one or more described ports power on, when receiving first dynamic host configuration protocol DHCP discovery message or first DHCP request message by the port that powers on, flag value in the port that powers on is set to true, and record receives described DHCP and finds virtual LAN VLAN, the port of message or described DHCP request message and send the corresponding relation of media interviews control MAC Address that described DHCP finds the AP of message or described DHCP request message;

Receive the DHCP confirmation message by port, find corresponding binding list item according to the MAC Address of the requestor AP in the described DHCP confirmation message and the VLAN of the described DHCP confirmation message of reception in the corresponding relation of record, it is requestor AP IP address allocated that the IP address of recording in the described binding list item is updated in the described DHCP confirmation message.

10. device according to claim 7 is characterized in that, described state detection module specifically also is used for: to the AP timed sending ARP request of described list item correspondence; Perhaps,

Regularly detect the MAC Address of dynamic learning under the port of described list item; Perhaps,

AP timed sending Internet Control Message Protocol ICMP request message to described list item correspondence.

11. device according to claim 10 is characterized in that, described state detection module also is used for: judge that whether described list item satisfies preset requirement, specifically also is used for:

12. device according to claim 7 is characterized in that, described recovering state module specifically is used for:

Close the power supply with described AP corresponding port in list item, make described port become power-down state; After waiting for setting-up time, recover power supply and log information with described AP corresponding port in list item.