A WLAN access point is a device that connects components of a wireless network by receiving and transmitting signals. It can extend the range of a network, allow for free movement within an area, and connect the wireless and wired segments of a network. It can also be used to get around obstacles and can be managed by a WLAN controller.
For a wireless local area network (WLAN) to function properly, a means of connectivity must exist for the various parts of the network. A WLAN access point is one of the means used to achieve connectivity. A WLAN access point, also known as a wireless access point, is a device on the network through which other components connect. An access point is designed to receive and transmit wireless network signals.
A WLAN access point is similar to a router in its ability to handle wireless signals. The WLAN access point, however, lacks the ability to route network traffic and is usually not even configured for security. Firewall and security issues for a wireless network are usually administered by the router. Wireless access points are also available for various wireless protocols.
WLAN access points can be used in various ways. One of the most common uses of an access point is to extend the range of a wireless network. The wireless signals produced by the router in the network have a limited effective range. By placing an access point at the outer edge of this distance, the range of the network can be expanded.
Calculated and tactical placement of access points allows wireless clients to move freely within the network area, such as different rooms in a building, without losing connectivity. This is especially useful for networks that cover a large area or multiple floors. Even buildings that are close to each other can be connected wirelessly through the use of wireless access points.
Access points are also useful for getting around obstacles. High density objects, such as concrete walls and heavy cabinets, may block a wireless signal from reaching a receiver. A strategically placed wireless access point can serve to redirect the signal for better access.
Another frequent application for a WLAN access point is network expansion. Each access point can connect up to 255 components to the network. Access points can be linked together in tandem to produce additional connectivity. A WLAN access point can also be used to connect the wireless segment of a network with the wired Ethernet portion of the network. Used in this way, the access point is referred to as a bridge.
Occasionally it is necessary to change the configuration of an access point, especially regarding the security settings. When using multiple access points in series, a WLAN controller is often used to manage the devices. With a WLAN controller you can change and update settings on all connected access points simultaneously.
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