1. Multicasting is (only) half the Internet Mar 19, 2006 Yoichi Shinoda JAIST & WIDE shinoda@jaist.ac.jp

2. Overlay Multicast - Bayeux, ALMI, TAG, P2P... - IP Multicast - PIM-SIM, DVMRP... - X C A S T IP Multicast -PIM-SIM, DVMRP... - Overlay Multicast - Bayeux, ALMI, TAG, P2P... - Good for file sharing, but - Limited bandwidth in the first mile - Large end-to-end delay - Overlay network does not map well on top of the underlying IP networks: * Very costly to network providers * Hard to conduct Traffic Engineering Good for delay-sensitive & interactive applications, such as VoIP, Video or Multi-media conferences - scalability with respect to the number of groups - rapid adaptation to changes in routing topology - no limited bandwidth in the first mile Good for large-scale media distribution, but - large size of routing table - Slow adaptation to changes in routing topology (Long convergence time) Unicast(Broadcast) The Ideal Multicast Spectrum Areas for possible research cooperation - Tree construction, Tree Maintenance (e.g., ALM) - Router-Assisted schemes and mechanisms (e.g., Active-Net) The Multicast Spectrum

3. I would like to see the contribution of new RG 200620072008 2009 20102011 Environment All Digital TV will have ethernet(& tcp/ip) IP multicasted TV broadcasting SSGM activities IRTF RG SSGM IETF WG Proposed standard SGM service Commercial products and services ALM OMcast XCAST L4 congestion control L5 P2P signaling Host Identity Real time Application L3 WG L ４ WG L5 WG Draft-irtf-ssgm-sgm-taxomony, etc Research paper Large testbed accelerates R&D StarBED, AnyBED,NetBED PlanetLab GENI L3 End of Analog surface TV transmission (Japan)

4. Candidate subject on SSGM IP Multicast ASM SSM Overay Mulitcast XCAST XCAST4 XCAST6 XCAST+ ALM End System Multicast NICE ALMI OMcast Akamai # of recievers # of groups Convergence E2E Latency Selfish? Maintenance cost of proxy ・・・・ Draft-irtf-ssgm-sgm-taxonomy-xx.txt Just an example

5. R&D acceleration with large testbeds For example, the StarBED StarBED http://www.starbed.org Internet emulator 700 PCs, 1500-10000 when VM-mplx’ed 10Gbps Internet(IPv4/IPv6) Connection Features Experimenter can Configure them in any topology {with,without} Internet connection Automation tools Install/Configure OS automatically Configure topology for various scenarios Possible Methodology StarBED Overlay netwroking Like Planetlab/GENI + Acceleration of SSGM-RG activity