The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2020
Filed:
Sep. 10, 2015
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
David Ian Allan, San Jose, CA (US);
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A method is implemented by a network device in a network including a plurality of network devices. The method implements multicast forwarding configuration resulting in reduced state for the network by utilizing unicast tunneling between a root, replication points and leaves that implement each multicast distribution tree. The method selects a multicast group to determine forwarding configuration for the selected multicast group, prunes a shortest path tree for the selected multicast group to generate a source group tree, and determines whether the network device is a root or a replication node for the source group tree. The method further checks whether a downstream leaf or replicating node is adjacent to the network device, and where the selected branch does not have an adjacent replication node or leaf, identifies the next replicating node or leaf on the selected branch, and configures the network device to forward multicast group traffic using a unicast tunnel.