What features of Carousel require a Multicast enabled network? Ray Tiley December 27, 2018 15:52 Updated Follow Carousel requires multicast capabilities for the following features to function. 1: PTP Based Zone Synchronization. 2: Multicast UDP Video streams. Related articles Which file formats are supported on Cablecast's SX video servers? How do I update my Carousel software? Tightrope software version numbers Comments 0 comments Please sign in to leave a comment.