online cisco ccna training

online cisco ccna training.LWAPP control frames sent from the AP to the WLC use the AP's Ethernet MAC address as the source address and the WLCMAC address as its destination address.LWAPP control frames sent from the WLC to the AP use the WLCMAC address as their source address and the APMAC address as their destination address.Packets between a WLAN client and other hosts are typically IP packets. Figure 11-1 shows the process of a client sending frames in a logical topology. Do not focus on the underlying network here, only on the processes that will occur between devices.| 802.11 |Host AFigure 11.1 Host A sending to Host BIn this figure, Host A is sending a packet to Host B. The process is as follows. Step 1 Host A sends an IP packet on the 802.11RF interface, which is encapsulated in an 802.11 frame with the MAC address of Host A as the source address and the MAC address of the AP's wireless interface as the destination address.Step 2 At the AP±, the AP adds a LWAPP header with C bits set to 0 to the frame, and then encapsulates the LWAPP header with the 802.11 frame into the Ethernet frame. The Ethernet frame uses the AP Ethernet MAC address as the source MAC address and the WLCMAC address as the destination MAC address.Step 3 On the WLC, remove the Ethernet and LWAPP headers, and process the original 802.11 frame.Step 4 After processing the 802.11MAC header, the WLC extracts the payload (IP packets), encapsulates it into an Ethernet