Routing Stack Changes in FreeBSD 13

Alexander Chernikov <>

This talk provides an overview of the redesigned routing subsystem in FreeBSD 13. It will cover pluggable fib lookup algorithms, resulting in 10-30x lookup performance improvements. It will touch on scalable multipath routing and control plane performance improvements. Basic building blocks – nexthops and nexhops groups will be covered in detail.

Alexander Chernikov

Alexander is a FreeBSD committer since 2011, mostly interested in the networking parts of the stack.