FreeBSD as router - performance vs hardware routers

Kenneth Culver culverk at
Thu Aug 14 08:15:26 PDT 2003

> As a Note, the top end routers out there, Junipers, run JunOS, which is
> a FreeBSD variant. A Juniper M160 can route OC192's at wire speed
> (That's 10Gb/s folks).

However, the way those are set up, FreeBSD doesn't do the actual routing,
as far as I can remember they upload a routing table to the line cards and
transfer any changes to the routing table to the line cards, so the
routing itself is done by high-speed hardware, and FreeBSD is mainly
managing all the custom hardware. We did a similar thing when I worked for
Ericsson with FreeBSD.


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