A network comprising: a packet switched sub-network configured to provide pseudo wire transport; a first sub-network (210A, 210B) connected to the packet switched sub-network, the first sub-network (210A, 210B) comprising: a first node; and a second node; and a second sub-network (210C, 210D) connected to the packet switched sub-network, the second sub-network (210C, 210D) comprising: a third node, characterized in that: the second sub-network (210C, 210D) further comprising a first pseudo wire (PW-13), wherein the first node terminates the first pseudo wire (PW-13) and the third node terminates the first pseudo wire (PW-13); a second pseudo wire (PW-23), wherein the second node terminates the second pseudo wire (PW-23) and the third node terminates the second pseudo wire (PW-23); and a third pseudo wire (PW-12), wherein the first node and the second node may communicate through the packet switched sub-network via the third pseudo wire (PWP-12), wherein a first sub-network protocol and a second sub-network protocol are selected from a group consisting of Synchronous Digital Hierarchy and Synchronous Optical Network (SONET), and the first sub-network (210A, 210B) and the second sub-network (210C, 210D) provide path protection services across the packet switched sub- network, the path protection services selected from a group consisting of Sub-Network Connection Protocol (SNCP) and Unidirectional Path Switched Ring (UPSR); wherein the network is configured to carry data plane traffic over the packet-switched sub-network concurrently by only one pseudo wire (PW-13, PW-23, PW-12) between the first sub-network (210A, 210B) and the second sub-network (210C, 210D). a packet switched sub-network configured to provide pseudo wire transport; a first sub-network (210A, 210B) connected to the packet switched sub-network, the first sub-network (210A, 210B) comprising: a first node; and a second node; and a first node; and a second node; and a second sub-network (210C, 210D) connected to the packet switched sub-network, the second sub-network (210C, 210D) comprising: a third node, a third node, the second sub-network (210C, 210D) further comprising a first pseudo wire (PW-13), wherein the first node terminates the first pseudo wire (PW-13) and the third node terminates the first pseudo wire (PW-13); a second pseudo wire (PW-23), wherein the second node terminates the second pseudo wire (PW-23) and the third node terminates the second pseudo wire (PW-23); and a third pseudo wire (PW-12), wherein the first node and the second node may communicate through the packet switched sub-network via the third pseudo wire (PWP-12), wherein a first sub-network protocol and a second sub-network protocol are selected from a group consisting of Synchronous Digital Hierarchy and Synchronous Optical Network (SONET), and the first sub-network (210A, 210B) and the second sub-network (210C, 210D) provide path protection services across the packet switched sub- network, the path protection services selected from a group consisting of Sub-Network Connection Protocol (SNCP) and Unidirectional Path Switched Ring (UPSR); wherein the network is configured to carry data plane traffic over the packet-switched sub-network concurrently by only one pseudo wire (PW-13, PW-23, PW-12) between the first sub-network (210A, 210B) and the second sub-network (210C, 210D).