Feng Gang National Laboratory of Communication,UESTC Aug 2017 Ver 1.4 A Review of Internet architecture technology Applications Messaging datagram model>no direct confirmation of final receipt email (optional confirmation now)and IM emphasis on interoperation (SMS,pagers,...)delays measured in minutes - Retrieval query (request/response) 。“client-server'” ·ftp,HTTP emphasis on fast reliable transmission delays measured in seconds Continuous media generation rate~delivery rate rendering rate audio,video,measurements,control Internet telephony Multimedia conferencing related:streaming media >slightly longer timescales for rate matching video-on-demand emphasis is on timely and low-loss delivery real-time 。 delays measured in milliseconds 2616009:Network Traffic Engineering 1:Overview Page.32616009: Network Traffic Engineering Feng Gang National Laboratory of Communication, UESTC Aug 2017 Ver 1.4 1: Overview Page.3 A Review of Internet architecture & technology • Applications - Messaging  datagram model  no direct confirmation of final receipt – email (optional confirmation now) and IM  emphasis on interoperation (SMS, pagers, …) delays measured in minutes - Retrieval & query (request/response)  “client-server”  ftp, HTTP  emphasis on fast & reliable transmission  delays measured in seconds - Continuous media  generation rate ~ delivery rate ~ rendering rate  audio, video, measurements, control – Internet telephony – Multimedia conferencing  related: streaming media slightly longer timescales for rate matching – video-on-demand  emphasis is on timely and low-loss delivery  real-time  delays measured in milliseconds