Exam 200-301 topic 1 question 1158 discussion

"Before an access point joins a controller, it sends out a discovery request. From the discovery response that it receives, the access point can tell the number of AP-manager interfaces on the controller and the number of access points on each AP-manager interface. The access point generally joins the AP-manager with the least number of access points. In this way, the access point load is dynamically distributed across the multiple AP-manager interfaces. " Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/m_configuring_multiple_ap_manager_interfaces.html

This option suggests that the AP selects the AP-Manager interface based on the load, specifically choosing the one with the fewest number of currently managed APs. While this could be a logical approach for load balancing, it is not how the Cisco Wireless LAN Controllers (WLC) typically handle AP join requests. The correct behavior is described by option D, where the AP joins the first AP-Manager interface that responds to its discovery request. This method prioritizes speed and simplicity over load balancing. So, option C is not the correct description of how APs join WLCs when multiple AP-Manager interfaces are provisioned. The correct answer remains: The first AP-Manager interface to respond is chosen by the AP.

C. The AP-Manager with the fewest number of APs is used by the AP to join. When a wireless LAN controller (WLC) has multiple AP-Manager interfaces configured, it typically distributes the AP join requests among these interfaces to balance the load. The AP-Manager interface that currently has the fewest number of associated access points (APs) usually handles the new AP join request. This load-balancing mechanism helps in efficiently managing the connections and maintaining optimal performance across the network.

C is correct The access point generally joins the AP-manager with the least number of access points. In this way, the access point load is dynamically distributed across the multiple AP-manager interfaces. https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/m_configuring_multiple_ap_manager_interfaces.pdf page 1

More than one AP-Manager on a SINGLE WLC, then based on load. C

The Access Point boots and sends a discovery request to the management interface of the controller using the IP you configured as Option 43 in DHCP. It’s also possible to specify the IP addresses of the controller in DNS. The Controller sends a discovery reply containing the system name, AP-Manager addresses, the number of access points already connected to each AP-Manager interface and the overall capacity of the controller. The access point joints the controller using the least-loaded AP-Manager interface. https://community.cisco.com/t5/wireless-mobility-knowledge-base/configuring-multiple-ap-manager-interfaces-on-wireless-lan/ta-p/3148746

I want to choose D

https://community.cisco.com/t5/wireless-mobility-knowledge-base/configuring-multiple-ap-manager-interfaces-on-wireless-lan/ta-p/3148746

When multiple AP-Manager interfaces are available, the AP will send requests to all AP-Manager interfaces and then select the interface based on the first response. This helps ensure that the AP can quickly connect to the wireless LAN controller and start communicating with the wireless network. The other options describe different situations, but do not correspond to how they are handled when there are multiple AP-Manager interfaces.