Hi, I have deployed packstack (All-In-One) openstack over single server and that openstack traffic is IN/Out via eth1 of the server and that's the network port configured during the packstack deployment. The server has 4 nic ports and only one (nic1) is used during openstack deployment. The openstack running good and my vm/vnf traffic can in/out via eth1. 

I would like to know how I can utilize other nic port (2,3,4) in my server so that openstack can leverage that port for my other VM/VNF that instantiate in my openstack. For example from the image attached, I want VM/VNF1 connect to nic2 and VM/VNF2 connect to nic3.

Please advise how it can be done. I really hope someone could advise and help me further. Thank you.

**This is standard openstack (deployed via packstack all-in-one) over single centos7 server that have 4 nic ports**