Patent ID: 8958423
Filing Date: 2015-02-17
Classification: H04L

Abstract:
1. In a network node positioned inside a Multiprotocol Label Switching (MPLS) core network, a method of establishing a multicast Virtual Private Network (MVPN) comprising: establishing a multicast Label Switched Path (mLSP) in the MPLS core network using a multicast Resource Reservation Protocol-Traffic Engineering (mRSVP-TE) and without using a Border Gateway Protocol (BGP) to discover one or more edge nodes, wherein the network node is a root node of the mLSP established in the MPLS core network; receiving a packet for multicast data from a Virtual Private Network (VPN) via a provider edge (PE) node positioned on the edge of the MPLS core network, wherein the PE node is a leaf node of the mLSP established in the MPLS core network; swapping an upstream label in the packet that is assigned to the PE node with a downstream label assigned to a next hop of the mLSP; and forwarding the packet to the next hop of the mLSP.