Configure BBR on Debian and Ubuntu

kernel version > 4.9

1、修改系统参数

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

2、保存生效

sysctl -p

3、查看内核是否已开启BBR

sysctl net.ipv4.tcp_available_congestion_control

输出如下：

net.ipv4.tcp_available_congestion_control = bbr cubic reno

4、查看BBR是否启动

lsmod | grep bbr

输出如下：

tcp_bbr                20480  28

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