Optimal multicast forwarding for sources behind evpn fabric

A method, comprising:

• sending, by an egress provider edge device of a plurality of provider edge devices of an Ethernet Virtual Private Network (EVPN) instance, a source announcement to a first backup provider edge device of the EVPN instance and to an ingress provider edge device;
• the egress provider edge device being in communication with a source operable for sending multicast content;
• and
• the ingress provider edge device being in communication with a subscriber requesting multicast content from the source;
• establishing a unicast tunnel between the first backup provider edge device and the egress provider edge device;
• receiving, at the first backup provider edge device, multicast content from the source;
• and
• forwarding, at the first backup provider edge device and over the unicast tunnel between the first backup provider edge device and the egress provider edge device, multicast content from the source to the egress provider edge device.

A system, comprising:

• one or more processors in communication with one or more memories, the one or more memories including instructions executable by the one or more processors to:
• send, by an egress provider edge device of a plurality of provider edge devices of an Ethernet Virtual Private Network (EVPN) instance, a source announcement to a first backup provider edge device of the EVPN instance and to an ingress provider edge device;
• the egress provider edge device being in communication with a source operable for sending multicast content;
• and
• the ingress provider edge device being in communication with a subscriber requesting multicast content from the source;
• establish a unicast tunnel between the first backup provider edge device and the egress provider edge device;
• receive, at the first backup provider edge device, multicast content from the source;
• and
• forward, at the first backup provider edge device and over the unicast tunnel between the first backup provider edge device and the egress provider edge device, multicast content from the source to the egress provider edge device.