Creating bi-directional co-shared sessions and switching bi-directional co-shared sessions

摘要

Methods and systems for creating bi-directional co-shared sessions and switching between bi-directional co-shared sessions. Embodiment of one method includes the following steps: Sending a first message over a bi-directional parent session network path (P_p) to indicate allocation of network resources along the P_p, including co-shared network resources. Creating the parent session (S_p) by sending a first session creation message. Sending a second message over a bi-directional derivative session network path (P_d) to indicate allocation of non-co-shared network resources along the P_d. And creating the S_d by sending a second session creation message.