Basic HTML version of Foils prepared Dec. 6 98

Foil 28 Definitions - Flow Control

From Introduction to Internetworking Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 Flow control is a function that prevents network congestion by ensuring that transmitting devices do not overwhelm receiving devices with data
2 Methods:
  • buffering - temporarily storing bursts of excess data in memory until they can be processed
  • transmitting source-quench messages - the receiving device sends source-quench messages to request that the source reduce its current rate of data transmission
  • windowing - flow control scheme in which the source device requires an acknowledgement from the destination after a certain number of packets have been transmitted
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