Automatic Wireless roaming between AP

Wireless AP configuration planning (wireless devices automatically roam between multiple APs)
 
 
 
In wireless roaming, the configuration of Wireless AP is basically the same as that of common Wireless AP, but you should pay attention to the following issues:
 
 
 
All wireless APS must use the same SSID.
 
 
 
All wireless APS must use IP addresses of the same network segment and are in the same VLAN.
 
 
 
Wireless AP with signal coverage cannot use the same channel.
 
 
 
Because multiple AP signal coverage areas overlap with each other, the channels occupied by each AP coverage area must comply with certain specifications, and the adjacent channels of the same region cannot overlap with each other, that is, wireless aps in the areas covered by each other cannot use the same channel. Otherwise, the AP may interfere with each other during signal transmission, thus reducing the working efficiency of the AP. Among the 11 available channels, only 3 channels are completely not covered. They are Channel 1, Channel 6, and Channel 11, respectively, using these channels as multi-cell coverage is the most suitable. In addition, the Wireless AP used to implement the wireless roaming network must use the same network name (SSID) and IP address of the same network segment. Otherwise, the wireless client cannot implement the roaming function.
 
 
 
In a wireless roaming network, the client configuration is exactly the same as that in the Access Point Network. During the process of moving, the user does not feel the need to switch between wireless APs.
 
Pay attention to the following points when building a wireless roaming network:
 
 
 
AP signal coverage areas must overlap with each other. Otherwise, wireless network blind spots may occur. That is to say, the distance between Wireless AP should be less than the limited transmission distance between Wireless AP.
 
 
 
The Wireless AP must use different or even non-adjacent channels. Otherwise, it will cause serious interference and reduce AP communication efficiency. The channel is the frequency band, and the IEEE 802.11b/g is working in 2400 ~ 2 483 MHz. The US standard channel can be divided into 11 channels, the European standard can be divided into 13 channels, and the Japanese standard can be divided into 14 channels. The difference between each channel is 11 MHz. For example, channel1 is 2 412 MHz and channel2 is 2 423 MHz. In fact, there is no interference between channels 1, 6, and 11.
 
 
 
The Wireless AP must be set to the same SSID. Different SSID means different wireless networks, but cannot achieve wireless roaming. Note that the SSID is case sensitive.
 
 
 
The same WEP or WPA encryption must be used. All Wireless AP and client must adopt the same WEP or WPA encryption. Otherwise, the connection between them cannot be established. WEP and WPA are case sensitive.
 
 
 
The Wireless AP and the wireless client must be in the same VLAN and IP address segment.
 
 
 
This article is from the "Mu Wei blog" blog