CWAP

Management frames are the frames that are used for managing the wireless LAN. In this blog, I want to write out which frames there are and what their purposes are. Beacon Frames Beacon frames have the information about the wireless network and are sent by the access point. Every 100 Time Unit is a beacon …

In the MAC header, there is also a field that is called the QoS control field, and it has different flags. It is in total a 2-byte field (16 bits). Those 16 bits are written down as followed. The first 4 bits is the Traffic Identifier. This identifies the User Priority. The User Priority is …

In the MAC header is a Frame Control field that is in total 2 bytes, so it has in total 16 bits. Those bits are defined as follows: Protocol Version, this is the version of the 802.11. In the wired network, there are two different versions at this moment. Version 4 and 6 (IPv4 and …

Frame Format Wireless Frames are a little bit different than the Ethernet frames. The Ethernet frame starts with a “preamble” and a “Start-of-Frame Delimiter (SFD).” This is the PHY frame—the wireless frame has this as well, but it is more complex. In this blog, I want to explain the MAC frame. The MAC frame in …

The OSI model is must-know knowledge for everybody that even thinks about toughing the network. Wireless acts at Layer 1 and Layer 2. In this blog, I want to look into the PHY layer (Layer 1), but first an overview. Layer 7 – Application Layer 6 – Presentation Layer 5 – Session Layer 4 – …

There are a several Wireless LAN architectures. For indoor networks, you have the Single MAC model and the Split MAC model. Single MAC model The logic for processing the MAC layer operation is within the access point. We call this a smart access point. Those access points are autonomous/standalone access points and are managed individually. …