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'''<span style="font-variant: small-caps;">Blue</span>'''<ref>{{Citation |title=BLUE: A New Class of Active Queue Management Algorithms |author1=Wu-chang Feng |author2=Dilip D. Kandlur |author3=Debanjan Saha |author4=Kang G. Shin |year=1999 |month=April |url=http://www.eecs.umich.edu/techreports/cse/99/CSE-TR-387-99.pdf |journal=U. Michigan Computer Science Technical Report |issue=CSE–TR–387–99 |accessdate=2010-12-22}}</ref> is an [[Active Queue Management]] algorithm. Like [[Random early detection|RED]], it operates by randomly dropping or [[Explicit Congestion Notification|ECN]]-marking packets in a router's queue before it overflows. Unlike RED, however, it requires little or no tuning on the part of the network administrator.
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