1. A method for sender node operation, the method comprising: selecting a single network topology from an environment of multiple network topologies in a single network, wherein the single network topology comprises multiple potential paths to a receiver node, and wherein multiple network elements are shared between at least two of the multiple network topologies; reserving path states for a traffic engineered label switched path (TE LSP) at layer two, wherein the TE LSP is established within the single network topology, and wherein reserving path states comprises sending a first resource reservation protocol with traffic engineering (RSVP-TE) message at layer two containing multi-topology information comprising a multi-topology identification and a multi-topology identification metric about the single network topology traversed by the TE LSP at layer two among the multiple network topologies in the single network; and releasing the reserved path states.