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Lecture 4 - Coggle Diagram
Lecture 4
principles of reliable data transfer
reliable transfer over a reliable channel
rdt2.0: channel with bit errors
rdt2.0: FSM specification
rdt2.0: operation with no errors
rdt2.0: error scenario
connection oriented transport: TCP
Segment structure
Reliable data transfer
flow control
connection management
Transport services and protocols
Provide logical communicating between app protocols
Runs in end systems (not in routers)
More than one transport protocol available to apps
Transport vs network layer
Network layer: provides logical communications between hosts
Transport layer: provides logical communication between processe
Multiplexing & demultiplexing
multiplexing at sender
handle data from multiple sockets, add transport header
demultiplexing at receiver:
use header info to deliver received segments to correct socket
connectionless transport: UDP