US 12,107,695 B2
Multicast routing
Ayan Banerjee, Fremont, CA (US); Raghava K. Sivaramu, Fremont, CA (US); Srinivasan Ramabadran, Sunnyvale, CA (US); Mehak Mahajan, Santa Clara, CA (US); and Nataraj Batchu, Sunnyvale, CA (US)
Assigned to Cisco Technology, San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Sep. 2, 2021, as Appl. No. 17/465,822.
Application 17/465,822 is a continuation of application No. 16/372,148, filed on Apr. 1, 2019, granted, now 11,133,947.
Application 16/372,148 is a continuation of application No. 14/734,987, filed on Jun. 9, 2015, granted, now 10,250,399, issued on Apr. 2, 2019.
Claims priority of provisional application 62/059,616, filed on Oct. 3, 2014.
Prior Publication US 2021/0399908 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/18 (2006.01); H04L 45/16 (2022.01); H04L 45/745 (2022.01); H04L 49/201 (2022.01)
CPC H04L 12/18 (2013.01) [H04L 45/16 (2013.01); H04L 45/745 (2013.01); H04L 49/201 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining, at a fabric module, whether there is a data link layer entry for a multicast route of a multicast packet,
in response to determining there is a data link layer entry for a multicast route of a multicast packet, forwarding, by the fabric module, the multicast packet to all potential egress cards as identified by the data link layer entry;
determining, by one of the egress cards that received the multicast packet from the fabric module, whether the one of the egress cards is an intended recipient of the multicast packet; and
in response determining the one of the egress cards is an intended recipient of the multicast packet, forwarding the multicast packet to an egress port of the one of the egress cards.