US 11,985,002 B2
Protocol independent multicast (PIM) designated router (DR) election
Mankamana Prasad Mishra, Dublin, CA (US); Ali Sajassi, San Ramon, CA (US); Samir Thoria, Saratoga, CA (US); Krishnaswamy Ananthamurthy, San Ramon, CA (US); and Stig Ingvar Venaas, Oakland, CA (US)
Assigned to Cisco Technology, Inc.
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 3, 2022, as Appl. No. 18/052,254.
Application 18/052,254 is a continuation of application No. 16/205,430, filed on Nov. 30, 2018, granted, now 11,509,494.
Prior Publication US 2023/0090072 A1, Mar. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/18 (2006.01); H04L 12/46 (2006.01); H04L 45/16 (2022.01); H04L 67/2895 (2022.01)
CPC H04L 12/185 (2013.01) [H04L 12/1886 (2013.01); H04L 12/4679 (2013.01); H04L 45/16 (2013.01); H04L 67/2895 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining, at a device comprising a router comprising an interface in communication with a network, that an all-active multi-homed ethernet segment (ES) associated with the interface is enabled, wherein the device is multi-homed in an all active mode to a plurality of edge routers of an ES;
in response to determining that the all-active multi-homed ES is enabled, determining, by the router, an ethernet virtual private network (EVPN) designated forwarder (DF) state of the all-active multi-homed ES;
in response to determining that the all-active multi-homed ES is enabled and does not have the EVPN DF state, entering, by the router, a protocol independent multicast (PIM) non-designated router (non-DR) state, wherein, in the PIM non-DR state, no DR is elected on the interface; and
in response to determining that the all-active multi-homed ES is enabled and an orphan bridge port is associated with the interface, selecting a DR.