US 12,155,564 B2
Scalable overlay multicast routing in multi-tier edge gateways
Senthilkumar Karunakaran, Santa Clara, CA (US); Subin Cyriac Mathew, San Jose, CA (US); Stephen Tan, San Jose, CA (US); Meenakshi Sundaram Selvaraj, Pleasanton, CA (US); and Chidambareswaran Raman, Sunnyvale, CA (US)
Assigned to VMware LLC, Palo Alto, CA (US)
Filed by VMware LLC, Palo Alto, CA (US)
Filed on Jul. 27, 2023, as Appl. No. 18/226,777.
Application 18/226,777 is a continuation of application No. 17/367,347, filed on Jul. 3, 2021, granted, now 11,784,922.
Prior Publication US 2023/0370367 A1, Nov. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 45/42 (2022.01); H04L 12/46 (2006.01); H04L 45/02 (2022.01); H04L 47/80 (2022.01)
CPC H04L 45/42 (2013.01) [H04L 12/4633 (2013.01); H04L 45/02 (2013.01); H04L 47/806 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
at a first host computer of a plurality of host computers:
receiving a multicast packet having an overlay multicast group identifier, wherein each of the plurality of host computers executes at least one edge router through which packets pass through to enter or exit an overlay network;
mapping the overlay multicast group identifier to an underlay multicast group identifier;
encapsulating the multicast packet with an encapsulation header that includes the underlay multicast group identifier to create an encapsulated multicast packet; and
forwarding the encapsulated multicast packet to a physical switch that sends copies of the encapsulated multicast packet to ports of a set of edge routers that are implemented at a set of other host computers and that are determined to be interested in the underlay multicast group identifier, the encapsulated multicast packet being replicated to the ports.