CN105813169B - Wireless network deployment method and system - Google Patents

Abstract

The invention discloses a wireless network deployment method and system, which mainly broadcasts a broadcast message including the network address of a wireless controller periodically through a broadcast module in a broadcast domain; and then a wireless access device located in the broadcast domain receives and parses all the broadcast messages. The broadcast message is obtained to obtain the network address, and a connection request is initiated to the wireless controller according to the network address.

Description

A wireless network deployment method and system

technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a wireless network deployment technology.

Background technique

A wireless local area network (WLAN) provides a wireless connection service for a local area network. A wireless access point (AP) is a wireless transceiver device in a wireless local area network, which is used to convert data received from a wired network, such as the Internet, into Wireless signal transmission, converts the received wireless signal into data and forwards it to the wired network.

At present, the existing operational WiFi networks are becoming more and more common, and the number of AP nodes is also increasing. The centralized management of APs has become one of its most important features. A WLAN wireless network is usually deployed in a small enterprise, and the demand for APs is small. A wireless network controller AC (Access Controller, AC for short) and APs are often deployed in the same Layer 2 network, which is easy to communicate with each other. In medium and large enterprises deploying wireless networks, the number of APs is large, the network topology is complex, and different subsets of APs belong to different subnets. How to quickly and effectively discover ACs by APs is one of the important problems faced by network administrators.

The current AC discovery programs mainly include the following categories:

(1) DHCP Option 60 field discovery method, that is, configure the IP or domain name of the AC in the Option field of the DHCP Server in the network, and obtain the IP address of the AC while assigning the IP address through the DHCP Client of the AP;

(2) DNS discovery method, that is, the IP address of the AC is obtained through the DNS request of the AP;

(3) AP pre-configuration mode, that is, pre-configure the AC's IP address or domain name in the AP's local file;

(4) Broadcast discovery mode, that is, the AP requests the AC to respond to its IP address by sending a broadcast packet.

The above technical solution (1) requires that the AP and the AC belong to the same Layer 2 broadcast domain, otherwise they cannot work. In addition, if the network does not support DHCP Server or supports DHCP Server but does not support configuring the Option field, it will not work, and there are considerable limitations; technical solution (2) requires that the network support DNS service, otherwise the AC discovery cannot be completed; technology The solution (3) is pre-configured. When the IP or domain name of the AC changes, it is necessary to manually modify the configuration items for each AP, which is very cumbersome and has poor maintainability. The technical solution (4) is the same as the solution (1). The disadvantage is that the AP and the AC must belong to the same Layer 2 broadcast domain, and the message packets between the AP and the AC need at least two round trips to obtain the IP address or domain name of the AC;

Therefore, it is necessary to invent a new wireless network deployment technology to quickly discover ACs, thereby overcoming many deficiencies in the above-mentioned existing technologies, which has become an urgent problem to be overcome in the current industry.

SUMMARY OF THE INVENTION

In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a method and system for deploying a wireless network, so as to quickly discover the AC and solve the problem that the AC cannot be quickly sent when the wireless network is deployed in the prior art.

In order to achieve the above and other objects, the present invention provides a wireless network deployment method, which includes: step S1 : periodically broadcasting a broadcast message including the network address of the wireless controller through a broadcast module in a broadcast domain; step S2 : in the broadcast The wireless access device in the domain receives the broadcast message; step S3: the wireless access device parses the broadcast message to obtain the network address of the wireless controller; and step S4: the wireless access device The resolved network address initiates a connection request to the wireless controller, requesting access to the wireless network.

Preferably, the wireless controller and the wireless access device belong to the same broadcast domain, and in the step S1, the broadcast message is regularly broadcasted through the wireless controller.

Preferably, the broadcasting module is a personal computer loaded with message broadcasting software. Further, when the wireless controller and the wireless access device do not belong to the same broadcast domain, in step S1, the personal computer is used to access each sub-network respectively, so that in the broadcast domain of the sub-network, The broadcast message is broadcast periodically.

Preferably, the broadcast module is a wireless access device manager, and in the step S1, the broadcast message is regularly broadcast through the management interface of the manager of any wireless access device logged in the wireless network. , and other wireless access devices located in the same broadcast domain receive the broadcast message.

The present invention also provides a wireless network deployment system for implementing the above method, the system includes: a broadcasting module for regularly broadcasting a broadcast message including the network address of the wireless controller in a broadcasting domain; the wireless access A device, located in the broadcast domain, receives the broadcast message, parses the broadcast message to obtain the network address of the wireless controller, and sends a connection request to the wireless controller according to the network address; and The wireless controller receives the connection request and performs processing to enable the wireless access device to access the wireless network.

Compared with the prior art, the present invention mainly uses a broadcast module, such as a personal computer loaded with message broadcast software, an AP manager or a wireless controller AC itself, to regularly broadcast a broadcast domain including the wireless controller on the wireless network. (AC) network address, so that the wireless access device (AP) in the same broadcast domain can start to obtain the network address of the wireless controller, and then send a connection request to the wireless controller to request access to the wireless network. The present invention uses the broadcast module to actively broadcast the AC network address of the wireless controller, which not only reduces the exchange of messages, but also enables the wireless access equipment AP in the subnet of the same broadcast domain to quickly obtain the network address of the AC, thereby solving the problem of existing problems. It is difficult for ACs to find problems during wireless network deployment.

Description of drawings

The preferred embodiments will be described below in a clear and easy-to-understand manner with reference to the accompanying drawings, and further description will be given of the above-mentioned characteristics, technical features, advantages and implementation manners of a wireless deployment system and method.

Fig. 1 is the basic structure diagram of the wireless deployment system of the present invention; and

FIG. 2 , FIG. 3 , and FIG. 4 are flowcharts of the wireless deployment method of the present invention.

Description of reference numbers:

10. Broadcast module, 20. Wireless access device, 30. Wireless controller.

Detailed ways

In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts, and obtain other implementations.

In order to keep the drawings concise, the drawings only schematically show the parts related to the present invention, and they do not represent its actual structure as a product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. As used herein, "one" not only means "only one", but also "more than one".

FIG. 1 is a schematic diagram of the basic structure of the wireless network deployment system of the present invention. The system includes a broadcast module 10, a wireless access device 20 and a wireless controller 30, and the present invention will be described in detail below. In the present invention, the numbers of the wireless access devices 20 and the wireless controllers 30 depend on the scale of the wireless network to be deployed, and the present invention is not limited by the numbers shown in FIG. 1 .

The broadcasting module 10 is used for regularly broadcasting a broadcasting message including the network address of the wireless controller in a broadcasting domain. The wireless access device 20 in the broadcast domain can receive the broadcast message after being powered on, parse the broadcast message to obtain the network address of the wireless controller, and then send the message according to the network address. A connection request is made to the wireless controller 20 to request access to the wireless network.

It should be noted that the present invention uses the above-mentioned broadcast module to define the network address of the wireless controller that actively broadcasts, so that the wireless access device can quickly discover the wireless controller and then access the network through the wireless controller.

When the wireless access device (AP) 20 and the wireless controller (AC) 30 both belong to the same layer 2 network, that is, the wireless access device 20 and the wireless controller 30 belong to the same layer 2 broadcast domain, the The broadcast module 10 may be the wireless controller 30 itself. In this case, a method for deploying a wireless network using the system of the present invention is shown in FIG. 2 , and the method includes the following steps.

First, perform step S1: use the wireless controller to periodically send a broadcast message including its network address. In this embodiment, the wireless controller sends a specific multicast Layer 2 packet with 01:80:C2:01:01:01 as the destination MAC address through the Ethernet interface every 3 seconds, and the packet field AC_IP is its own IP address . Next, step S2 is performed.

Step S2: The wireless access device is powered on to receive the broadcast message, and parses the network address of the wireless controller therein. That is, after parsing the AC_IP field of the packet to obtain the IP address of the AC, the AP can initiate a connection to the AC and request access to the network.

Step S3: The wireless access device initiates a connection request to the wireless controller according to the resolved network address, requesting to access the wireless network. The wireless controller then processes the request to enable the wireless access device to access the wireless network.

In another embodiment of the present invention, the broadcast module is a personal computer PC, and the PC is loaded with software capable of broadcasting the broadcast message, so that when the wireless access device and the wireless controller network are not connected, the The PC periodically sends the broadcast message, and then performs wireless network deployment. The specific method of deployment is shown in FIG. 3 . The method described in this embodiment is a change made on the basis of the method shown in FIG. 2 , and the method includes the following steps:

First, step S1' is performed, and the broadcast message is broadcasted periodically through the PC. The specific broadcast method is: access the switch port in the same broadcast domain as the wireless access device AP through the Ethernet port of the PC, open the broadcast message software of the PC, and fill in the destination MAC address as 01:80:C2: 01:01:01, the AC_IP field is the IP address of the AC, and the sending frequency is set to 3 seconds for a broadcast message. Click Send, and the broadcast message will be broadcast to all wireless access devices (APs) in the same broadcast domain.

Step S2: The wireless access device located in the broadcast domain receives the broadcast message, and parses the broadcast message to obtain the network address of the wireless controller.

Step S3: The wireless access device initiates a connection request to the wireless controller according to the resolved network address, requesting to access the wireless network.

In other embodiments of the present invention, the wireless access device and the wireless controller belong to different sub-networks respectively, that is, they are not in the same broadcast domain, the above-mentioned PC can be used to access each sub-network, and then the The broadcast message software on the PC executes the above step S1', and then executes steps S2 and S3 in sequence to enable the wireless access device to quickly find the wireless controller, thereby completing the wireless network deployment.

In yet another embodiment of the present invention, the above-mentioned broadcasting module 10 can be replaced by a manager of the wireless access device, and the active discovery function of the manager is used to periodically broadcast the above-mentioned broadcast message, and the detailed steps for realizing wireless network deployment are as follows: As shown in FIG. 4 , the method includes the following steps.

Step S1": use the PC to log in to the WEB interface of the manager of the wireless access device, enable the active discovery function of the wireless access device, fill in the destination MAC address as 01:80:C2:01:01:01, and the AC_IP field is the IP address of the AC, and the sending frequency is set to 3 seconds for one broadcast packet. After the setting is completed, the wireless access device broadcasts the broadcast packet through the WAN port according to the setting.

Step S2: other wireless access devices in the same broadcast domain as the wireless access device described in step S1" receive the broadcast message, and parse the AC_IP field of the message to obtain the IP address of the AC.

Step S3: The wireless access device initiates a connection request to the wireless controller according to the resolved network address, requesting to access the wireless network.

It should be noted that the above embodiments can be freely combined as required. The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (4)

1. A wireless network deployment method for connecting a wireless access device to a wireless network, comprising: Step S1: Regularly broadcast a broadcast message including the network address of the wireless controller in a broadcast domain through a broadcast module, the broadcast module is a personal computer loaded with message broadcast software, when the wireless access device and the wireless controller When the server network is unavailable, use the personal computer to access each sub-network respectively, so as to regularly broadcast the broadcast message in the broadcast domain of the sub-network. The specific method is: access through the Ethernet port of the personal computer. On the switch port in the same broadcast domain as the wireless access device, open the broadcast message software of the personal computer, fill in the destination MAC address as 01:80:C2:01:01:01, and the AC_IP field as the AC's IP address, set the sending frequency to 3 seconds for a broadcast message, click Send to broadcast to all wireless access devices in the same broadcast domain; Step S2: the wireless access device located in the broadcast domain receives the broadcast message, and parses the broadcast message to obtain the network address of the wireless controller; and Step S3: The wireless access device initiates a connection request to the wireless controller according to the resolved network address, requesting to access the wireless network. 2. The wireless network deployment method according to claim 1, wherein the wireless controller and the wireless access device belong to a broadcast domain, and in the step S1, the wireless controller periodically broadcasts the the broadcast message. 3 . The wireless network deployment method according to claim 1 , wherein the broadcasting module is a wireless access device manager, and in the step S1 , logging in any wireless access device in the wireless network is performed. 4 . The management interface of the manager of the device periodically broadcasts the broadcast message, and other wireless access devices located in the same broadcast domain receive the broadcast message. 4. A wireless network deployment system, characterized by executing the wireless network deployment method according to any one of claims 1-3, the system comprising: The broadcast module is used to regularly broadcast the broadcast message including the network address of the wireless controller in a broadcast domain; The wireless access device, located in the broadcast domain, receives the broadcast message, parses the broadcast message to obtain the network address of the wireless controller, and sends a connection request to the wireless controller according to the network address controller; and The wireless controller receives the connection request and processes it to enable the wireless access device to access the wireless network.

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