new ccna training videos

new ccna training videos.Figure 9-8 WLC Receives ARP Answer from GW and Forwards it to LWAPP115 Chapter 9 Passing Packets from the Wireless Network to the Wired Network9.2 Basic Topics 116interface of the switch (here the controller supports multiple SSIDs mapped to multiple dynamic interfaces). You can use the switchportmode command to enable trunk in an interface. next' use the switchporttrunk command to set the hativeVLAN and encapsulation type. Most switches use 802.1qtrunking by default, but on some switches, other options may be available. Table 9.4 lists some of the commands used to enable trunking.0000.0000.0001 000c.0A0A.1111 ARP responseARP response LWAPP AP address Controller addressFigure 9.9 WLC Forwarding LWAPP Frames to APNext, the AP must remove the LWAPP header and display the 802.11 frame. The 802.11 frame is cached and the process of sending the frame over the wireless network begins. The AP starts a fallback timer and begins a countdown. If a wireless frame is listened to during the countdown, the reserved time for the listened-to frame is added to the countdown while the AP continues to work. Eventually, the frame will be sent as an 802.11 frame when the timer arrives.The client waits for a SIFS value when the frame is received and then sends an ACK. the client's ARP process has a mapping to the GWMAC address at this point and can assign the waiting frame. Keeping in mind thatThis still follows the rules of the fallback timer and contention window. and the frame is eventually transmitted after the ARP response.