In data networking and queueing theory, network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Typical effects include queueing delay, packet loss or the blocking of new connections. A consequence of the latter two effects is that an incremental increase in offered load leads either only to a small increase in network throughput, or to an actual reduction in network throughput.
Network protocols which use aggressive retransmissions to compensate for packet loss tend to keep systems in a state of network congestion, even after the initial load has been reduced to a level which would not normally have induced network congestion. Thus, networks using these protocols can exhibit two stable states under the same level of load. The stable state with low throughput is known ascongestive collapse.
Founded: 2002, Fremont, CA, USA
Key Principals: Networking Hardware and Software
Founded: 1984, San Fransisco, CA, USA
Key Principals: Networking Equipments
Founded: 2001, ON, Canada
Key Principals: Telecommunications
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