what is used to identify a wireless access point

This tutorial explains the functionalities of the Access points and the Wireless LAN controllers in detail. Learn what the Admission points and the Wireless LAN controllers are and how they piece of work in the wireless network.

This tutorial is the role of the CCNA Study Guide. It explains the post-obit CCNA topic.

Describe the affect of infrastructure components in an enterprise network.

• 1.3.b Access points
• ane.3.c Wireless controllers

Access point

An access indicate is the device that allows multiple wireless devices to connect with each other. Just similar a HUB or switch connects multiple devices together in a unmarried or multiple wired LAN networks, an access bespeak connects multiple wireless devices together in a single wireless or multiple wireless networks. An access indicate can also exist used to extend the wired network to the wireless devices.

Based on the functionalities, nosotros can categorize the access point in three types; standalone access point, multifunction admission point and controlled access point. Permit'south sympathize each type in particular.

Standalone access signal

A standalone admission indicate provides the same functionality in wireless network which a switch or hub provides in the wired network. It provides connectivity betwixt the unlike wireless devices. It accepts frame from the connected device and, based on its concrete address, forrard it to the destination device.

Both the wired network and the wireless network use the different networking standards. Wired network uses the Ethernet standards while the wireless network uses the IEEE802.11 or Wi-Fi standards.

A device which only understands and supports the one type of standards from the Ethernet standards and the Wi-Fi standards cannot process the frame that is formatted in the other blazon of standards. For example a regular Ethernet switch neither understands the frame formatted in Wi-Fi standards nor processes it.

Access point supports both standards. Based on the destination device, it converts the received frame before forwarding it. For example if it receives a frame that is formatted with the Wi-Fi standards and have a destination address that uses Ethernet standards, it formats that frame with Ethernet standards before forwarding it to the destination.

Access point uses radio signals for connectivity. Any device which falls in its bespeak range tin connect with it. This feature makes it more than flexible just less secure in comparison with the regular Ethernet switch.

To enhance the security and stop the unauthorized access, the Access point uses authorisation characteristic. Based on the security and the flexibility requirements, information technology can be configured to allow all users or to the selected users.

Multifunction Admission Point

A multifunction admission betoken is the combination of ii or more devices. In this combination an additional device or devices are merged with the admission signal to provide the boosted functionalities along with existing functionality of the access bespeak. A wireless router which Isp uses to provide to the Internet connection is the perfect example of the multifunction access point. It consist of three devices; an access point, a regular Ethernet switch and a router.

Controlled Access Point

A controlled access point works as the customer of the Wireless LAN Controller (WLC). Technically a controlled access point is known equally the Lightweight Access Signal (LWAP). LWAP doesn't take any forwarding decision. Upon receiving a frame from the connected device, instead of forwarding it to the destination device, it frontward that frame to the WLC. The WLC, based on the security configuration, makes conclusion whether the received frame should exist forwarded or discarded. If the frame needs to be forwarded, then it sends that frame to that LWAP, to which the destination device is connected. Then that LWAP sends this frame to the destination device.

The WLC - LWAP setup is usually used in the company environs to span a single wireless network in large geographical area. This setup allows users to roam around the function premise, campus or building and stay connected to the network.

In this setup, information technology doesn't make any divergence which LWAP a user uses to transport and receive the frames equally long every bit that LWAP is controlled by the aforementioned WLC. Since all forwarding decisions are taken by the WLC, an LWAP does not allow direct communication betwixt the two devices, even if they both are connected with it.

Key points

• Access point connects multiple wireless devices together in a unmarried wireless network.
• Access point supports both blazon of standards; Ethernet and Wi-Fi.
• Access signal uses radio signals to provide the connectivity.
• Based on functionality an access point can exist categorized in three types; standalone, multifunction and client.
• A standalone access indicate works in the wireless network exactly as the switch works in the wired network.
• To control the unauthorized access, Access point uses authority.
• To extend the coverage area, multiple access points are used together nether a Wireless LAN Controller.
• An access point which works nether the WLC is known as the LWAP (Lightweight Access Bespeak).
• In WLC-LWAPs setup, the WLC controls and manages all LWAPs.
• A LWAP works every bit the bridge betwixt the WLC and the finish device.

That's all for this tutorial. If y'all like this tutorial, delight don't forget the share it friends through your favorite social network.

Past ComputerNetworkingNotes Updated on 2019-03-17 01:41:13 IST

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