Feng Gang National Laboratory of Communication,UESTC Aug 2017 Ver 1.4 Background The Internet has evolved into a critical communications infrastructure Very high quality of services are demanded 。 Performance optimization has become an important problem 。 Mechanisms are needed to allocate the network resources properly Mechanisms are needed to resolve resource contention 2616009:Network Traffic Engineering Unit 9:Traffic Engineering Page.32616009: Network Traffic Engineering Feng Gang National Laboratory of Communication, UESTC Aug 2017 Ver 1.4 Unit 9: Traffic Engineering Page.3 Background • The Internet has evolved into a critical communications infrastructure • Very high quality of services are demanded • Performance optimization has become an important problem • Mechanisms are needed to allocate the network resources properly • Mechanisms are needed to resolve resource contention