This determines the order in which LDP connects and releases out segments. default: This will release all out-segments on a session before programming new out-segments on the same session. No ordering for out-segments across different sessions is enforced when ECMP is in use. connFirst: This mode forces all the out-segments for an LSP to be programmed before any out-segments are released. This ordering is only supported if the LSC stub supports implicit XCs.