BIC TCP

BIC TCP (Binary Increase Congestion control) is one of the <a href="/facts/TCP_congestion_control/gC9Fer09">congestion control algorithms</a> that can be used for <a href="/facts/Transmission_Control_Protocol/WW4sPrt9">Transmission Control Protocol</a> (TCP). BIC is optimized for high-speed networks with high latency: so-called <a href="/facts/Long_fat_network/72txR7o3">long fat networks</a>. For these networks, BIC has significant advantage over previous congestion control schemes in correcting for severely underutilized bandwidth.
BIC implements a unique congestion window (cwnd) algorithm. This algorithm tries to find the maximum cwnd by searching in three parts: <a href="/facts/Binary_search_algorithm/FFmQzunc">binary search</a> increase, <a href="/facts/Additive_increase%2fmultiplicative_decrease/GmlKkQtu">additive increase</a>, and slow start. When a network failure occurs, the BIC uses multiplicative decrease in correcting the cwnd.
BIC TCP is implemented and used by default in <a href="/facts/Linux/9FvCKSTq">Linux</a> kernels 2.6.8 and above. The default implementation was again changed to <a href="/facts/CUBIC_TCP/U4WmEFE4">CUBIC TCP</a> in the 2.6.19 version.

BIC TCP open-in-new

BIC TCP