Enable BBR On Debian
Enable BBR (Bottleneck Bandwidth and Round-trip propagation time) congestion control algorithm on Debian.
Enable
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
sysctl -p
Verify
sysctl net.ipv4.tcp_available_congestion_control
It should output bbr. like this
net.ipv4.tcp_available_congestion_control = reno cubic bbr
Optional
lsmod |grep bbr
It should output something like this
tcp_bbr 20480 6