US 11,757,671 B2
Multicast traffic optimization in multihomed edge network elements
Mankamana Mishra, Dublin, CA (US); Swadesh Agrawal, San Jose, CA (US); Ali Sajassi, San Ramon, CA (US); Ijsbrand Wijnands, Leuven (BE); and Samir Thoria, Saratoga, CA (US)
Assigned to CISCO TECHNOLOGY, INC., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on May 25, 2021, as Appl. No. 17/329,651.
Application 17/329,651 is a continuation of application No. 16/133,000, filed on Sep. 17, 2018, granted, now 11,025,444.
Prior Publication US 2022/0209977 A1, Jun. 30, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/18 (2006.01); H04L 45/50 (2022.01); H04L 1/00 (2006.01); H04L 45/16 (2022.01)
CPC H04L 12/1859 (2013.01) [H04L 12/185 (2013.01); H04L 12/1895 (2013.01); H04L 45/50 (2013.01); H04L 45/16 (2013.01); H04L 2001/0093 (2013.01)] 12 Claims
OG exemplary drawing
1. A method comprising:
at a first multihomed leaf node connected via a core network to a plurality of other multihomed leaf nodes, receiving multicast data from a multicast source of a multicast network flow;
publishing a notification from the first multihomed leaf node that received the multicast data, the notification indicating that the multicast network flow is available from the first multihomed leaf node;
receiving by the first multihomed leaf node a subscription to the multicast network flow from a multicast recipient;
determining whether there are multiple paths from the first multihomed leaf node to the multicast recipient;
creating a topology-aware point to multipoint (P2MP) tree for the multicast network flow that allows for distribution of the multicast network flow to the multicast recipient and excludes at least one leaf node; and
providing the multicast network flow to the multicast recipient according to the P2MP tree.