CPC H04L 45/50 (2013.01) [H04L 45/122 (2013.01); H04L 45/16 (2013.01); H04L 45/24 (2013.01); H04L 12/28 (2013.01)] | 17 Claims |
1. A method implemented by an ingress node in a Multiprotocol Label Switching (MPLS) network, the method comprising:
receiving a packet;
duplicating the packet to generate a copy of the packet;
pushing onto the packet a first segment list describing a segment routing point to multipoint (SR P2MP) path as a list of multicast segment identifiers (SIDs) each comprising a multicast adjacency label;
pushing a second segment list onto the copy of the packet;
transmitting the packet from a downstream interface along the SR P2MP path; and
transmitting the copy of the packet from a second downstream interface, wherein the first segment list and the second segment list describe different sub-trees of the SR P2MP path.
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