Telecommunication Networking IIWhat are we trying to do?What’s driving in the growth?Slide 4Slide 5Slide 6Scaling the Internet by another factor of 1000?Quality of ServiceNew ideas (and old ideas whose time may have come)Slide 10Slide 11Slide 12Telecommunication Networking IILecture 40Next Generation InternetWhat are we trying to do?•Over the next 5 years, the aggregate capacity of the Internet is likely to grow by a factor of 100-1000. This corresponds to approximately: -5x as many users-3x as many uses per user-30 x the average number of bytes per useWhat’s driving in the growth?•Only about 15-30% of the potential population of users (in developed countries) are actually using the Internet on a regular basis•New applications are emerging (e.g., Internet telephony/Internet multimedia teleconferencing)•Traditional applications are moving toward multimedia•Ultra-high speed (Gbps) applicationsWhat are we trying to do?•Access bandwidths will increase from ~28.8 kbps to ~ 1-10 Mbps for non-wireless users(cable modems, XDSL) and even for fixed wireless applicationsWhat are we trying to do?•New applications will require guaranteed quality of service (packet delay, packet delay variability, packet loss rates)What are we trying to do?•Users will demand “trustworthy” and dependable networking services and end-to-end applications-security (privacy, authentication, …)-availabilityScaling the Internet by another factor of 1000?•Will the next generation Internet simply be more of what we have today, or will significant changes by required to scale it by another factor of 1000?-Limitations in the ability to scale routers to multi- Tbps (million packet per second) sizes?-Managing a network that is 1000x as big?•Fixed scale factors: the speed of light, acceptable response timesQuality of Service•How do we deliver (a variety of) guaranteed qualities of service?-Priority packet queues?-Over-provisioning?-Segregated networks?New ideas (and old ideas whose time may have come)•Packet switching at the periphery and (fast) circuit switching at the core•Multi-protocol label switching (MPLS)•Pro-active congestion management•Segregation of packet headers from the bodies of packetsT-Tx40 G modT-Tx40 G modT-Tx40 G modT-Tx40 G mod40G Rx40G Rx40G Rx40G RxClockBufferSche-dulerFrom Input PortretimingOutputPolarizationcontrollerSchematic of the 5 Tbps IP-routerTerahertz Optical Asymmetric Demultiplexer (TOAD)Pegasus: Ultra High Capacity Networking : Applications•Bio-complexity: Multi-location, real-time, in-vivo studies of cell life dynamics Drexel University-Banu Onaral,MCP Hahnemann- J. Yasha Kresh, et. al.•Bio-informatics: Access to Multi-dimensional (space + metadata) brain mapping dataUniversity of Pennsylvania- Susan Davidson, et. al., Drexel University- Jonathan (Yoni) Nissa nov , et.
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