CN107484228B - Method for simultaneously processing on-line of a large number of APs (access points) based on data traffic - Google Patents
Method for simultaneously processing on-line of a large number of APs (access points) based on data traffic Download PDFInfo
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- CN107484228B CN107484228B CN201710856975.8A CN201710856975A CN107484228B CN 107484228 B CN107484228 B CN 107484228B CN 201710856975 A CN201710856975 A CN 201710856975A CN 107484228 B CN107484228 B CN 107484228B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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Abstract
The invention relates to a method for simultaneously processing a plurality of APs online based on data flow, which provides a wireless local area network, wherein the wireless local area network comprises an AC and a plurality of APs connected with the AC, and comprises the following steps: step S1: calculating the data traffic of each AP and the total data traffic of the whole wireless local area network in a certain period of time at intervals; step S2: calculating the delay time of the AP according to the data traffic of the AP and the total data traffic of the whole wireless local area network; step S3: and when the AP is restarted, the AP is on line after the delay time. The invention solves the problems that the AC cannot process a large amount of data in time and cannot make the AP with a large amount of data requests online as soon as possible when receiving the large amount of data.
Description
Technical Field
The invention relates to the field of wireless local area networks, in particular to a method for simultaneously processing a large number of APs on line based on data flow.
Background
The application of the wireless local area network is more and more extensive, the application range of the AC-AP network deployment mode is wider and wider, and the wireless local area network is gradually popularized in occasions such as governments, schools, middle and large markets, squares, enterprises and the like. In the existing AC-AP network mode, the process of the AP going online (i.e. associating with the AC) is generally: after AP program starts, it sends broadcast message to network environment to seek AC address, AC receives the message and replies a message carrying its own address to AP, after AP obtains AC address, it sends request to AC to be on-line, AC interacts with it, verifies some information of AP (generally version number, manufacturer, AP model, etc. to confirm whether it should be allowed to be on-line), then lets AP on-line, then sends current network environment configuration stored by AC to it. The AP configures related wireless signals, etc. according to the received configuration information.
In the online process, the messages are mainly divided into two types, one is to interact with the AC when online is requested, and the other is to allow the AC to issue configuration to the AP after online. In the whole process, a large number of messages are generated, the whole network environment generally consists of one AC and a plurality of APs, and the number of the APs can be as many as thousands. Because the AC needs to process all the AP online messages and send configuration information to the APs, when many APs request to be online, a large amount of messages are generated, and if the AC cannot bear such a large amount of data, the network data messages may be blocked, and even if the AC is directly down, the APs cannot provide services to the outside in time.
The range of the application of the AC & AP networking mode is getting larger and more complex, only one AC in working state is in the same network environment, but a plurality of APs are associated with the AC, and when the network environment is powered off and powered on, a plurality of APs simultaneously request to be on-line to the AC, which is roughly divided into the following two cases:
the first technical scheme is as follows:
when there is a large restart of the ap in the environment (e.g., recovery after a circuit failure), the ap immediately connects the ac. The aps can simultaneously send data messages to the ac, the ac almost simultaneously processes the data messages, and after processing, the data messages are sent to the corresponding aps according to processing results. Ap and ac interact data in this way until ac configuration is completed.
The second prior art scheme is:
when there is a large amount of ap restarts in the environment (e.g., recovery after circuit failure), the ap randomly backs off for a period of time and then connects the ac. after the ap is restarted, a delay is randomly generated, then the ac requests to be on-line, the ac responds to the ap, and the message is interacted until the ac configuration is completed.
In the prior art scheme 1, the AP simultaneously requests the AC to go online, the AC receives a large amount of data requesting the online in a short time, the AC cannot process the large amount of data in a short time, which may cause slow data packet processing or even loss, the AP fails to go online, and continues to request the online, a large amount of repeated messages are generated, which causes serious network congestion or even downtime of the AC, resources are wasted, efficiency is reduced, the online time of the AP is increased, and the network environment is initialized slowly. Some vendors have increased the hardware configuration of the AC to increase the data processing speed in order to avoid this situation as much as possible. But this increases the cost of the netting and the performance requirements and processing speed of the network on the AC do not need to be too high when the network is operating properly. Resulting in a waste of resources.
In the prior art scheme 2, the AP randomly makes a delay to request the access to the AC, and although the problem that the AC cannot be processed due to the fact that the AC can receive a large amount of data in a short time can be basically solved, because the data traffic generated by each AP is different, the AP which generates small data traffic is brought online first, and the AP which has a large amount of data traffic is brought online after the delay is long, the AP which has a large amount of data traffic cannot acquire data in time, so that the user experience is reduced.
Disclosure of Invention
In view of this, the present invention provides a method for processing a large number of APs simultaneously online based on data traffic, which solves the problem that an AC cannot process a large number of data in time when receiving the large number of data and cannot bring an AP having a large number of data requests online as soon as possible.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for processing a plurality of APs simultaneously online based on data traffic provides a wireless local area network, the wireless local area network comprises an AC and a plurality of APs connected with the AC, and the method is characterized by comprising the following steps:
step S1: calculating the data traffic of each AP and the total data traffic of the whole wireless local area network in a certain period of time at intervals;
step S2: calculating the delay time of the AP according to the data traffic of the AP and the total data traffic of the whole wireless local area network;
step S3: and when the AP is restarted, the AP is on line after the delay time.
Further, the method for processing a plurality of APs simultaneously online based on data traffic according to claim 1, wherein the specific method for calculating the delay time in step S2 is as follows:
wherein T is the delay time, QiData traffic for the ith AP, QGeneral assemblyFor total data traffic of the entire wireless local area network, TmaxIs the maximum delay time.
Further, the maximum delay time is 300 s.
Further, the specific calculation process of step S1 is as follows: at intervals, the AP reports the data traffic of the AP to the AC, and the AC obtains the total data traffic of the whole wireless local area network according to the data traffic reported by all the APs:
wherein, N is the number of APs in the wireless local area network.
Further, the specific calculation method of the data traffic of each AP in step S1 is as follows:
Qi＝2QUi+QDi
wherein Q isiFor data traffic of the ith AP, QUiQD for the upload flow of the ith APiIs the download traffic of the ith AP.
Further, step S1 includes that the AC sends the total data traffic of the entire wireless lan to each AP, and the AP stores the data traffic of the AP and the total data traffic of the entire wireless lan in the FLASH of the AP.
Further, the specific online process of step S3 is as follows: after the AC is restarted, a broadcast message is sent to the AC after delay time to obtain an AC address, an online request is sent to the AC according to the obtained AC address, the AC sends configuration information to the AP according to a CAPWAP protocol after receiving the configuration information, and the AP configures related wireless signals according to the configuration information and then is online.
Compared with the prior art, the invention has the following beneficial effects:
the invention can automatically adjust the delay time of the AP online according to the user quantity, thereby not only avoiding the condition that the AC needs to process a large amount of AP online requests in a short time, but also ensuring that the AP with large data flow demand is online first.
Drawings
FIG. 1 is an overall flow chart of the present invention.
Fig. 2 is a flow chart of the AP restart of the present invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
Referring to fig. 1, the present invention provides a method for processing a large number of APs simultaneously online based on data traffic, and provides a wireless local area network, where the wireless local area network includes an AC and a plurality of APs connected to the AC, and the AP starts to send a DHCP message to search for an AC address, the AP sends a discovery message of a CAPWAP to the AC to request to be online, the AC receives a subsequent CAPWAP protocol to send a corresponding configuration, and the AP finishes the online; further comprising the steps of:
step S1: calculating the data traffic of each AP and the total data traffic of the whole wireless local area network in a certain period of time at intervals; the specific calculation process is as follows:
at intervals, the AP reports the data traffic of the AP to the AC, and the AC obtains the total data traffic of the whole wireless local area network according to the data traffic reported by all the APs:
wherein N is the number of APs in the wlan, and N is 500.
Preferably, the specific calculation method of the data traffic of each AP is as follows:
Qi＝2QUi+QDi
wherein Q isiFor data traffic of the ith AP, QUiQD for the upload flow of the ith APiThe download flow of the ith AP; the uploading flow is the flow uploaded to the internet by the AP in a wireless mode, the downlink flow is the flow downloaded to the client from the internet by the AP in a wireless mode, and the uploading flow is important and is recorded as double for processing.
And at intervals, the AC sends the total data traffic of the whole wireless local area network to each AP, and the AP stores the data traffic of the AP and the total data traffic of the whole wireless local area network on a FLASH of the AP.
Step S2: calculating the delay time of the AP according to the data traffic of the AP and the total data traffic of the whole wireless local area network; the specific calculation method comprises the following steps:
wherein,t is the delay time, QiData traffic for the ith AP, QGeneral assemblyFor total data traffic of the entire wireless local area network, TmaxIs the maximum delay time; the maximum delay time is 300 s.
Step S3: when the AP is restarted, the AP is on line after the delay time; referring to fig. 2, the specific online process is as follows: and after the AC is restarted, reading the storage content in the FLASH, sending a broadcast message to the AC after delay time to acquire an AC address, sending an online request to the AC according to the acquired AC address, sending configuration information to the AP according to a CAPWAP protocol after the AC receives the configuration information, and configuring related wireless signals by the AP according to the configuration information and then online.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (6)
1. A method for processing a plurality of APs simultaneously online based on data traffic provides a wireless local area network, the wireless local area network comprises an AC and a plurality of APs connected with the AC, and the method is characterized by comprising the following steps:
step S1: calculating the data traffic of each AP and the total data traffic of the whole wireless local area network in a certain period of time at intervals;
step S2: calculating the delay time of the AP according to the data traffic of the AP and the total data traffic of the whole wireless local area network;
step S3: when the AP is restarted, the AP is on line after the delay time;
the specific calculation method of the delay time in the step S2 is as follows:
wherein T is the delay time, QiData traffic for the ith AP, QGeneral assemblyFor total data traffic of the entire wireless local area network, TmaxIs the maximum delay time.
2. The method of claim 1, wherein the maximum delay time is 300 s.
3. The method for processing a plurality of APs simultaneously online based on data traffic as claimed in claim 1, wherein the specific calculation procedure of step S1 is as follows: at intervals, the AP reports the data traffic of the AP to the AC, and the AC obtains the total data traffic of the whole wireless local area network according to the data traffic reported by all the APs:
wherein, N is the number of APs in the wireless local area network.
4. The method as claimed in claim 1, wherein the specific calculation method of the data traffic of each AP in step S1 is as follows:
Qi＝2QUi+QDi
wherein Q isiFor data traffic of the ith AP, QUiQD for the upload flow of the ith APiIs the download traffic of the ith AP.
5. The method according to claim 1, wherein the step S1 further includes the AC sending the total data traffic of the entire wireless lan to each AP, and the AP storing its own data traffic and the total data traffic of the entire wireless lan on a FLASH of the AP.
6. The method for processing a plurality of APs simultaneously online based on data traffic according to claim 1, wherein the specific online procedure of step S3 is as follows: after the AC is restarted, a broadcast message is sent to the AC after delay time to obtain an AC address, an online request is sent to the AC according to the obtained AC address, the AC sends configuration information to the AP according to a CAPWAP protocol after receiving the configuration information, and the AP configures related wireless signals according to the configuration information and then is online.
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