ucb communication networks: big picture jean walrand u.c. berkeley wlr

UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley www.eecs.berkeley.edu/~wlr

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UCB

Communication Networks:Big Picture

Jean WalrandU.C. Berkeley

www.eecs.berkeley.edu/~wlr

UCB Outline

Communication Networks Packets Switch Transport Future

UCB Communication Networks

UCB Packets

A | B | ...

B port 2

A | B | ...

Page 13: UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley wlr

UCB Packets: 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: extensibility

Page 14: UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley wlr

UCB Transport

Page 15: UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley wlr

UCB Future ...

Before: “Simple” Network

Client Server

Network

Packet Transport

UCB Future ...

Now: “Complex” Network

Network

Application and Contents Servers, Caches, Traffic Control,

Redirection Agents, Processing

Page 17: UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley wlr

UCB Future ...

Server Location Server Allocation (Load Balancing) Traffic Control: Quality Contract Client Mobility Rapid Deployment: Self-configuration Role of Optical Switches

New Problems:

Page 18: UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley wlr

UCB Future ...

Examples:Smart Dust

Page 19: UCB Communication Networks: Big Picture Jean Walrand U.C. Berkeley wlr

UCB Future ...

Examples:

Sensor Networks

Temperature around X?

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