First of all,Sorry for insufficient information.
i thing i get your point. but, because of i have limited resources(only one pc).
i will try to add another physical nic in my pc, so one physical nic for promisc mode and another one for nonpromisc. And i will look over my network topo again and make it simple. If still dont work, i have no choice to get a dedicated machine for my ids.T_T
Thanks for your advice!Really appreciate it.
i will update later.