Feng Gang National Laboratory of Communication,UESTC Aug 2017 Ver 1.4 Integrated Services Datagram Service Controlled-Load Service:Performance as good as in an unloaded datagram network.No quantitative assurances. Guaranteed Service: Firm bound on data throughput and delay. Every element along the path must provide delay bound. Is not always implementable,e.g.,Ethernet. Delay jitter or average delay not guaranteed or minimized. 2616009:Network Traffic Engineering 7:IntServ and DiffServ Page.112616009: Network Traffic Engineering Feng Gang National Laboratory of Communication, UESTC Aug 2017 Ver 1.4 7: IntServ and DiffServ Page.11 Integrated Services • Datagram Service • Controlled-Load Service: Performance as good as in an unloaded datagram network. No quantitative assurances. • Guaranteed Service: - Firm bound on data throughput and delay. - Every element along the path must provide delay bound. - Is not always implementable, e.g., Ethernet. - Delay jitter or average delay not guaranteed or minimized