Exam 300-430 topic 1 question 272 discussion

https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-4/configuration/guides/consolidated/b_cg74_CONSOLIDATED/configuring_videostream.html

Cisco WLC Multicast Direct (also known as 802.11v Multicast-to-Unicast) is used to optimize video streaming to wireless clients by converting multicast video traffic into multiple unicast streams. When Session Announcement State is enabled, the WLC notifies clients when it cannot provide a video stream due to network constraints, such as insufficient bandwidth or excessive traffic load. This setting helps improve the Quality of Experience (QoE) by informing users about potential video streaming issues.

To notify users when the Cisco Wireless LAN Controller (WLC) cannot provide a video stream while using the Multicast Direct Feature, the Northbound Notification setting must be enabled. Here's why: Northbound Notification: This feature allows the WLC to send notifications to external systems (e.g., network management systems, applications) when specific events occur, such as the inability to provide a video stream. These notifications can be used to alert users or administrators about the issue. Multicast Direct Feature: This feature enables the WLC to forward multicast traffic directly to clients without converting it to unicast. If the WLC cannot provide the video stream (e.g., due to insufficient bandwidth or network issues), Northbound Notifications can be used to inform users.