new cisco ccna ipv4 course

new cisco ccna ipv4 course.Layer 3 LWAPP mode: when operating in Layer 3 mode, the LWAPP is able to know and use both Layer 2 addresses (MAC addresses) and Layer 3 addresses (IP addresses). In Layer 3 mode, LWAPP allows the network administrator to place the AP at different subnet boundaries and the protocol runs across these boundaries.10.2.3 Supporting Multiple Networks The previous section discussed that APs can actually advertise multiple SSIDs so that APs can provide customer access as well as enterprise user access, and even wireless IP phone access. Each WLAN controller can actually support 512 different VLAN instances. Keep in mind that on the connection between the AP and the WLAN controller, all wireless client data is transmitted to the wired domain through the LWAPP tunnel. Remember also that SSIDs exist only in the wireless space. An SSID is tied to a VLAN in the controller. Each lightweight AP can support 512 different VLANs, but you often won't see that many on an AP. On the other hand, the WLAN controller can connect up to 16 WLANs to each AP±O the controller assigns a WLAN ID (WLANID, WirelessLAN Identification) to each WLAN o This is a number of 1. 16 and you cannot make a subjective choice. So now you have a WLAN that brings together the concepts of SSIDs in wireless space and VLANs in wired space. by separating the WLANs, you can assign different Quality-of-Service (QoS, Quality-of-Service) policies to each traffic type encountered on the WLAN. An example of this is an IP phone with one WLAN and a regular network user with a different WLAN. Each AP can support up to 16 SSIDs, and in general, one SSID maps to one VLAN, meaning that even though a WLAN controller can support 512 VLANs per AP connection, in most cases, only up to 16 are visible.10.2.4 CUWN Architecture The CiscoUnifiedWirelessNetwork defines a total of five functional areas or interconnected elements, as shown in Figure 10-2.132 Chapter 10 Cisco Wireless Network ArchitectureFigure 10-2CUWN ArchitectureThese five elements or components all operate together. It is no longer a single pointproduct that is deployed by purchasing individual APs and using management software to operate them.e Today, all of the elements operate together to create a more flexible and more functional network. To describe how all the elements come together, think of a Cisco wireless network. This type of network includes the following wireless clients (the first component of a CUWN).CiscoAironet client devices.Cisco-compatible client devices (not necessarily Cisco products, but still compatible).Cisco Security Services Clients ( SSC,CiscoSecureServicesClient) 0 These client devices connect users to the network. The second component is the APs, which are dynamically managed by the controller and use LWAPP to communicate. The APs are responsible for bridging client devicesbackup with the wired network. The APs discussed here are shown below. 1130AG.