Huaiyin Institute of Technology Huawei Technologies Huawei Technologies Huaiyin Institute of Technology Futurewei Indian Institute of Science This document defines a 6top Scheduling Function called "Scheduling Function One" (SF1) to reserve, label and schedule the end-to-end resources hop-by-hop through the Resource ReserVation Protocol - Traffic Engineering (RSVP-TE). SF1 uses the 6P signaling messages with a global TrackID to add or delete the cells in L2-bundles of isolated traffic flows.