Sorry for the confusion, the config is a sample config where et-5/1/2 and et-5/1/5 are indeed the ports configured.
I have no-mag-learning as I am flooding in port et-5/1/2 and out et-5/1/5.
I don't follow your last statement; if I send in traffic on two interfaces and broadcast out the opposing interface why would I have 50% drop?
If I send Ixia in each side I expect to get all packets out the opposite side. Maybe there is some flood prevention going on here?
Thanks for the help in diagnosing this.