Who has put BRO turn parallel system?

Who has put BRO turn parallel system(concurrent system)?

I'm a second-year university student from China.I'm participating in a
project development about NIDS.The teacher suggested to find if someone
put BRO turn parallel system(concurrent system).

Thanks ....I'm very interesting about Nids and BRO.But It's hard to find
any document about BRO(Almost no),so I must learn from mail list...

If you have spare time. Trouble answering my this problem.