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About: DECbit     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Rule106652242, within Data Space : dbpedia.org associated with source document(s)

Type: topical conceptyago:Abstraction100002137yago:Communication100033020yago:Direction106786629yago:Message106598915yago:Protocol106665108yago:WikicatInternetProtocolsyago:Rule106652242 New Facet based on Instances of this Class

DECbit is a TCP congestion control technique implemented in routers to avoid congestion. Its utility is to predict possible congestion and prevent it. When a router wants to signal congestion to the sender, it adds a bit in the header of packets sent. When a packet arrives at the router, the router calculates the average queue length for the last (busy + idle) period plus the current busy period. (The router is busy when it is transmitting packets, and idle otherwise). When the average queue length exceeds 1, then the router sets the congestion indication bit in the packet header of arriving packets.