Hello, I’m trying to configure a CentOS 7 server to act as a host for a bunch of virtual servers (KVM). I have an 802.3ad bonded Ethernet connected to the server with a bunch of tagged VLANs. I want to be able to build a bridge interface on the server for each VLAN and then attach that to the bond interface and the virtual clients. I also want to attach a host interface to one of the VLANs for access to the host from my Infrastructure network. I have everything working but the host interface, What device do I put into ifcfg-VLAN-OOB to create a new software only interface. Here is what I have so far. EM1-4 are configured as slaves to BOND0 ifcfg-em1: TYPE=Ethernet USERSTL=no MASTER=bond0 NAME=em1 UUID=0ca45a64-70eb-4bfb-bf73-90b221d5fa65 DEVICE=em1 ONBOOT=yes SLAVE=yes ifcfg-em2: TYPE=Ethernet NAME=em2 UUID=d79cc76a-8f38-460c-9430-2ae78b43dc1d DEVICE=em2 ONBOOT=yes MASTER=bond0 USERCTL=no SLAVE=yes ifcfg-em3: TYPE=Ethernet NAME=em3 UUID=9f7cf127-eba2-45e8-95bd-814e6066aa74 DEVICE=em3 ONBOOT=yes MASTER=bond0 USERCTL=no SLAVE=yes ifcfg-em4 TYPE=Ethernet NAME=em4 UUID=53517fa5-9e22-4286-a367-8c91ef6f1883 DEVICE=em4 ONBOOT=yes MASTER=bond0 USERCTL=no SLAVE=yes ifcfg-bond0: DEVICE=bond0 NAME=bond0 TYPE=bond BONDING_MASTER=yes ONBOOT=yes BONDING_OPTS="mode=802.3ad miimon=10 lacp_rate=1" USERCTL=no Bond0 is up, the switch & server are happy all 4 links are live, no errors I created a new bridge: ifcfg-br0: DEVICE=br1 TYPE=BRIDGE ONBOOT=yes NAME=br1 I created a VLAN interface on bond0 and attached it to the bridge ifcfg-bond0.77: DEVICE=bond0.77 BOOTPROTO=none ONBOOT=yes VLAN=yes TYPE=Vlan PHYSDEV=bond0 VLAN_ID=77 NAME="Vlan bond0.77" BRIDGE=br1 UUID=d91d518a-cf03-555f-9837-ef2d2763218b Now, How do I create a new interface ‘VLAN-OOB’, attach it to the bridge and assign an IP address? ifcfg-VLAN-OOB: DEVICE=???????? BOOTPROTO=none ONBOOT=yes NETWORK=10.126.77.0 IPADDR=10.126.77.2 PREFIX=24 GATEWAY=10.126.77.1 DNS1=66.59.48.85 DNS2=66.59.48.86 DOMAIN=crocker.com DEFROUTE=yes NAME=“OOB Management VLAN" BRIDGE=br1 I want to be able to attach virtual-client interfaces to br1 so they can be on the same network. Eventually I’ll have a dozen bridges with different networks (Internet, VOIP, OOB, Backup, etc) Thanks -Matt — Matthew Crocker President - Crocker Communications, Inc. Managing Partner - Crocker Telecommunications, LLC E: matthew at corp.crocker.com E: matthew at crocker.com