公开(公告)号：US10938590B2

公开(公告)日：2021-03-02

申请号：US16218985

申请日：2018-12-13

Applicant: Cisco Technology, Inc.

Inventor： Jayashree Subramanian ,  Arvind Venkateswaran ,  Mankamana Prasad Mishra ,  Stig Ingvar Venaas

IPC: H04L12/18 ,  H04L12/761 ,  H04L12/46 ,  H04L12/753 ,  H04L12/801

Abstract: A first network device joins a redundancy group of a multihomed network element that is connected to a computing device. The first network device detects an active link between the first network device and the computing device, and receives from the computing device, a subscription to a multicast flow. The first network device adds the subscription to a first list of active multicast subscriptions stored on the first network device. The first network device sends a unicast notification to a second network device of the multihomed network element. The unicast notification causes the subscription to be added to a second list of active multicast subscriptions stored on the second network device.

公开(公告)号：US11824797B1

公开(公告)日：2023-11-21

申请号：US17510982

申请日：2021-10-26

Applicant: Cisco Technology, Inc.

Inventor： Mankamana P. Mishra ,  Ali Sajassi ,  Arvind Venkateswaran ,  Jayashree Subramanian ,  Patrice Brissette ,  Satya Ranjan Mohanty

IPC: H04L49/201 ,  H04L49/354 ,  H04L61/103 ,  H04L45/24 ,  H04L45/00

CPC classification number: H04L49/201 ,  H04L45/20 ,  H04L45/24 ,  H04L49/354 ,  H04L61/103

Abstract: At a provider edge (PE) router of PE routers of an Ethernet virtual private network (EVPN) configured to implement a border gateway protocol (BGP): receiving, from a multicast receiver, a multicast join for multicast traffic originated from a multicast source; identifying a next hop PE router for the multicast source; generating an EVPN route to the PE router, the EVPN route including an EVPN instance-route target that identifies the EVPN, and a specifically targeted route target that identifies the next hop PE router and that is configured to override the EVPN instance-route target to cause only the next hop PE router, and not any other of the PE routers, to import the EVPN route, when the EVPN route is advertised across the EVPN to the PE routers; and advertising the EVPN route across the EVPN to the PE routers.