I am running Bro in cluster mode using pf_ring to make it utilize the different cores of a system. Now I am wondering if the Bro devs have outlined the hardware requirements to be able to handle about 1gbps traffic. Specifically
no, we don't really have exact hardware requirements/specifications
outlined anywhere since this is really dependent on your traffic - and
available hardware changes all the time. Since 1GB of mixed traffic is not
really all that much I assume that you are ok with any recent hardware
with a number of CPUs and a bit of Ram (10GB or so available per Bro
process should be enough).