All: I am having problem settinup the network on openstack wiht ml2 plugin. Below is my configuration. I have a vlan interface which has a IP 1.2.3.4. and I have a phsysical interface which is assocaited to that box (that does not have an IP). Below is How they look like VLAN1 (VLAN ) Physical Device Configuration ------------ ---------------------------------- VLAN=yes TYPE=Ethernet TYPE=Vlan BOOTPROTO=dhcp PHYSDEV=phynet1 DEFROUTE=yes VLAN_ID=1 PEERDNS=yes REORDER_HDR=0 PEERROUTES=yes BOOTPROTO=static IPV4_FAILURE_FATAL=no DOMAIN=eng.myorg.com IPV6INIT=yes DEFROUTE=yes IPV6_AUTOCONF=yes IPV4_FAILURE_FATAL=no IPV6_DEFROUTE=yes IPV6INIT=no IPV6_PEERDNS=yes IPV6_AUTOCONF=yes IPV6_PEERROUTES=yes IPV6_DEFROUTE=yes IPV6_FAILURE_FATAL=no IPV6_FAILURE_FATAL=no NAME=phynet1 NAME=VLAN1 UUID=5ba6c8d1-8fe7-3fec-ae8c-ad67081547dc UUID=9cbf88dc-456c-1234-9876-12bece795678 DEVICE=phynet1 ONBOOT=yes ONBOOT=no DEVICE=MyVLAN1 IPV6_PEERDNS=yes IPV6_PEERROUTES=yes IPADDR=1.2.3.4 PREFIX=32 GATEWAY=1.2.3.1 DNS1=1.2.9.5 PEERDNS=yes PEERROUTES=yes I added the br-ex and br-int , And added port VLAN1 to br-ex. But I dont see the br-ex and br-int interfaces when I do ifconfig. Can somebody advice how to setup the network on openStack with above settings/. I am kind of stuck. Thanks, S