华中科技大学博士论文答辩会【荐】.pptVIP

* * * * Server selection: Each server (or datacenter) authorized by a principal P to host a service or datum named P:L simply registers P:L at their local RH. DONA routes any FIND(P:L) to the closest such server P2P applications could also employ this primitive, and would probably use immutable names where the principal would identify the particular P2P infrastructure. Mobility and multihoming:A roaming host can first unregister from one location and then re-register at its new location. Subsequent FINDs will be routed to the new location as soon as the new registrations have installed the necessary state. A multihomed host registers with each local RH and a multihomed domain forwards its REGISTERs to each provider. This allows FINDs, and thus the resulting data connections, to make use of multiple paths. Multicast state establishment: DONA’s anycast primitive provides the tree discovery function, allowing a domain’s border router that has local members in a multicast group G to discover and establish connectivity with other domains that have members in the group. To transmit a multicast packet destined for a particular group P:G, the sender’s border router R similarly issues a FIND packet to locate a nearby domain that belongs to the group and forwards the packet to that domain’s border router, which in turn initiates the packet’s dissemination. * * DTN: Provide interoperable communications with and among extreme and performance-challenged environments where continuous end-to-end connectivity cannot be assumed DFT-MSN: P DAN SCN * Washington University In St Louis,华盛顿大学 * * * * * * * * LambdaRail:高速光纤网络 * * * * * * * * * Emulab Networking research testbed at University of Utah Available for public use for research and education Software implemented at two dozen sites around the world Allows simulated links and nodes in slices ?Allows fault studies Provides repeatability Research Study Report * * / Internet for Masses Make it easy for naive users Functi