mpls-tp is designed for use as a network layer technology in transport networks. it will be a continuation of the work started by the transport network experts of the itu-t, specifically sg15, as t-mpls. since 2008 the work is progressed in a cooperation between itu-t and ietf. the required protocol extensions to mpls being designed by the ietf based on requirements provided by service providers. it will be a connection-oriented packet-switched (co-ps) application. it will offer a dedicated mpls implementation by removing features that are not relevant to co-ps applications and adding mechanisms that provide support of critical transport functionality.