How to enable tcp bbr in FreeBSD???

sthaug at nethelp.no sthaug at nethelp.no
Fri Apr 24 13:31:05 UTC 2020


> On my FreeBSD 13.0-CURRENT amd64 r359631M system:
> 
> $ sysctl -a | grep net.inet.tcp.cc
> [...]
> net.inet.tcp.cc.available: newreno
> net.inet.tcp.cc.algorithm: newreno
> 
> So it's more recent than the patch, but it does not offer anything
> besides newreno ?

Quoting an email here:

You can enable the stack globally on new connections without
restarting the box or daemons by running these commands:

kldload tcp_bbr

sysctl net.inet.tcp.functions_inherit_listen_socket_stack=0
sysctl net.inet.tcp.functions_default=bbr

Steinar Haug, Nethelp consulting, sthaug at nethelp.no


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