Providing strict bandwidth or delay bound to packet flows in the Internet is an inherently challenging task. It requires signaling and policing mechanisms, accurate and rapid accounting for network resources, and call admission control. In this paper, we present some policies to translate end-to-end (e2e) resource requirements into per-DiffServ hop service rate. We also introduce two e2e delay budget partitioning algorithms: One is built on rate-based scheduling and another is built on delay-based scheduling. This work mainly focuses on guaranteeing the e2e delay and loss of real-time flows given Expedited Forwarding (EF) Service class in DiffServ network. Furthermore, balancing EF traffic loads on the network links along the different routing paths.