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Answer When NG-MVPN with Protocol Independent Multicast (PIM) any-source multicast or generic routing encapsulation tunneling is used, traffic will not switch over from shared tree to shortest-path tree. Although a register packet is sent to the customer rendezvous point initially, multicast traffic is sent to the receiver through the shortest-path tree from the root
https://tools.ietf.org/html/draft-ietf-tictoc-ptp-enterprise-profile-06 The IETF draft document describes the Enterprise Profile for PTP with mixed Multicast and Unicast messages. Some key Enterprise Profile characteristics are: UDP over IPv4 End-to-End Delay Measurement Method Supports non-1588 aware switches or routers to pass PTP messages across networks between PTP master and slave IPv4 Multicast transport The IPv4 Multicast address used for PTP is 224.0.129 Dynamic detection of slave streams instead of explicit configuration Mixed Multicast and Unicast PTP messages Multicast PTP Sync and Announce messages Reduce the overhead/duplication at the Maste Unicast PTP Delay Requests and Delay Responses messages Reduce traffic in network since the slave port won’t receive these messages from other slave ports Unicast negotiation should be disabled while the system is running enterprise profile Stay tuned for more on this topic
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