AC controller is a kind of network hardware equipment, which is mainly responsible for managing the AP in the wireless network in a certain area. In order to make it easier for you to understand the relevant knowledge of AC controller, here I will popularize science for you.
1： Meaning of AC controller
We all know the controller, but many friends are confused by adding the word "AC" in front of the controller. In fact, "AC" here refers to alternating current. Alternating current is represented by the letter "AC", and direct current is represented by "DC". In fact, "AC controller" literally means "controller of alternating current". However, when used in computers, it means that in wireless coverage, it is mainly used to centrally manage all APS, which can be simply understood as "the steward of APS".
In fact, the principle of AC controller to realize AP management lies in the gateway function between WLAN and Internet (on the router). It will converge data from different access points and then connect to the Internet.
2： Advantages of AC controller
In previous wireless networks, all APS can only be connected through switches, which is not only inconvenient, but also different APS have to bear a series of tasks such as RF, communication and encryption. Therefore, centralized management cannot be realized at all. Now we can solve this problem by introducing AC controller.
Of course, in addition to the above basic AP management function advantages, the AC controller also has many other advantages, such as flexible networking mode, excellent scalability, and powerful roaming function support.
Flexible networking mode and excellent scalability:
In the past, the wireless users were interconnected with the wireless controller through the established GRE tunnel in the fit AP. Now we use the method of combining the fit AP and the AC controller. In this way, the fit AP does not need to be directly connected with the wireless controller. The wireless fit can be deployed in various places that need to be covered through the network.
Powerful roaming support:
The AC controller mainly takes fit AP as the boundary, and then effectively combines with the RF management system, which will greatly reduce the time for the wireless client and AP to connect with each other, and can realize the rapid switching of laptops and other adapters in the wireless network, so as to realize the function of fast roaming.
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