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Multipoint to multipoint trees for computed spring multicast

  • US 10,523,456 B2
  • Filed: 03/28/2016
  • Issued: 12/31/2019
  • Est. Priority Date: 03/28/2016
  • Status: Active Grant
First Claim
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1. A method executed by a network device in a source packet in routing, (SPRING) network, the method to establish a multipoint to multipoint multicast distribution tree where the network device is selected as a rendezvous point for the multipoint to multipoint multicast distribution tree, the method comprising:

  • advertising, by the network device, the rendezvous point with a multicast group identifier and multicast segment identifier to each node of the SPRING network via a control plane protocol, the multicast segment identifier to enable the rendezvous point to map received traffic with the multicast segment identifier to the multipoint to multipoint multicast distribution tree for a multicast group and to be used by nodes in the SPRING network to identify the multipoint to multipoint multicast distribution tree when tunneling traffic for the associated multicast group to the rendezvous point;

    receiving, by the network device, at least one interest registration from receivers of the multicast group via the control plane protocol; and

    constructing, by the network device, the multipoint to multipoint multicast distribution tree with the rendezvous point as a root and each of the receivers as leaves using unicast tunnels and replication points.

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