Today’s Network Abstraction

• System provides a connection service

  • Binds [<IP, port>, <IP, port>] tuple

• Any change invalidates the connection

• No support for periods of disconnectivity

គ.31.0.139, 2345>

.229.60.64, 22>

SSH

Client

TCP

IP

SSH

Server

TCP

IP

Each application must perform ad-hoc
recovery and disconnection management, or fail

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