Patent ID: 9680734
Date: 2017-06-13
CPC Classifications: H04L

Claim:
1. A method comprising: advertising, by a backup ingress node of a network connected to a multicast source to which a primary ingress node of the network is also connected, a virtual node identifier that identifies a virtual node as a next hop for the multicast source through the backup ingress node, wherein the virtual node identifier identifies the same virtual node as advertised as a next hop for the multicast source through the primary ingress node; establishing, by the backup ingress node, a backup path as a tunnel for a multipoint label switched path (LSP) to reach the virtual node, wherein the multipoint LSP is established between the virtual node as a root node and two or more egress nodes of the network; and in response to detecting, via the backup path, a failure at the primary ingress node, forwarding, with the backup ingress node, traffic of the multicast source through the backup path onto the multipoint LSP.