UCBCommunication Networks:Big PictureJean WalrandU.C. Berkeleywww.eecs.berkeley.edu/~wlrUCBOutline? Communication Networks? Packets? Switch? Transport? FutureUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBCommunication NetworksUCBPacketsABA | B | ...B ? port 2123A | B | ...A | B | ...UCBPackets: Main Ideas? The switches have no memory of packets: scalability? The network is independent of the applications: flexibility? The packet formats and addresses are independent of the technology: extensibilityUCBTransportUCBFuture ...Before: “Simple” NetworkClientServerNetworkPacket TransportUCBFuture ...Now: “Complex” NetworkNetworkApplication and Contents Servers, Caches, Traffic Control,Redirection Agents, ProcessingUCBFuture ...? Server Location? Server Allocation (Load Balancing)? Traffic Control: Quality Contract? Client Mobility? Rapid Deployment: Self-configuration? Role of Optical SwitchesNew Problems:UCBFuture ...? Examples:Smart DustUCBFuture ...? Examples:Sensor NetworksTemperature around
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