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CITS3002 Computer Networks |
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Congestion and Flow-Control, continuedBoth congestion and flow-control have the same aim - to reduce the offered traffic entering the network when the load is already high. Congestion will be detected through a number of local and global metrics -
The distinction often depends on the philosophy - virtual circuits or datagrams. Open loop control attempts to prevent congestion in the first place (good design), rather than correcting it. Virtual circuit systems will perform open loop control by preallocating buffer space for each virtual circuit (VC).
Closed loop control maintains a feedback loop of three stages -
CITS3002 Computer Networks, Lecture 5, The Network Layer, p17, 25th March 2024.
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