N1开启BBR

echo net.core.default_qdisc=fq >> /etc/sysctl.conf
echo net.ipv4.tcp_congestion_control=bbr >> /etc/sysctl.conf
sysctl -p

检查是否成功

sysctl net.ipv4.tcp_available_congestion_control

会显示

net.ipv4.tcp_available_congestion_control = BBR cubic reno

或执行

lsmod | grep BBR

出现

tcp_BBR 20480 26