Enable BBR congestion control on CentOS 8

Posted by Xiping Hu on March 30, 2023

Add these 2 lines to /etc/sysctl.conf:

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net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

apply changes by:

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sysctl -p

verify:

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sysctl net.ipv4.tcp_available_congestion_control | grep bbr
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net.ipv4.tcp_available_congestion_control = reno cubic bbr
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lsmod | grep bbr
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tcp_bbr                20480  2