Patent ID: 8451846

Claim:
A method comprising: defining, by one or more network devices, a first region in a network, the first region comprising a first link of the network, and the first region being a multiprotocol label switching (MPLS) based region; defining, by the one or more network devices, a second region in the network, the second region comprising a second link of the network; determining, by the one or more network devices, that the first link is in the MPLS based region; defining, by the one or more network devices, a boundary between the first region and the second region based on the first region and the second region after determining that the first link is in the MPLS based region; and creating, by the one or more network devices and after determining that the first link is in the MPLS based region, a label switched path (LSP) hierarchy, the creating of the LSP hierarchy includes: using, by the one or more network devices, the boundary to create a forwarding adjacency label switched path (FA-LSP) that includes the first link and one or more other links of the first region, the FA-LSP causing the first link and the one or more other links to appear to be in the second region of the network.