We are doing this quite a bit in production and it works great. bond as you normally would: DEVICE=bond0 ONBOOT=yes USERCTL=no BONDING_OPTS="mode=4 miimon=100" one of these for each vlan (in this case 50): VLAN=yes VLAN_NAME_TYPE=VLAN_PLUS_VID_NO_PAD DEVICE=vlan50 PHYSDEV=bond0 TYPE=Ethernet ONBOOT=yes BRIDGE=br50 and finally the bridge device to expose to guests: DEVICE=br50 TYPE=Bridge ONBOOT=yes DELAY=0 GATEWAYDEV=none On Tue, Nov 22, 2011 at 10:07 AM, Tait Clarridge <tait at taiter.com> wrote: > On Fri, 2011-11-18 at 17:56 -0500, Jason Nagashima wrote: >> Running on Centos 5.6 with KVM... >> >> I was wondering if anyone had any luck configuring the NICs where eth0 and eth1 are bonded together with vlan support to a bridge? >> >> I noticed some threads show this as a possibility (http://lists.centos.org/pipermail/centos-virt/2009-November/001417.html), but haven't had any luck implementing it. There also seems to be a bug with 5.6 (http://bugs.centos.org/view.php?id=4801), but that post died the day it was created it. >> >> Any advice/working examples would be greatly appreciated. > > Hi Jason, > > I have had luck doing this with Xen, where I create bond0 on a trunk > interface and have xen bring it up as xenbr0 with pbond0 in the back > end. > > You should be able to do roughly the same by creating a bridge interface > in /etc/sysconfig/network-scripts referencing bond0 as a member. > > After that you should be able to run a script to create VLAN bridges > like the following: > > #!/bin/bash > /sbin/modprobe 8021q > > # Add your vlans here that you want with the numbers separated by a > # space > VLANS="5 10 15 20" > # This should work with the bonding interface > TRUNKINT="bond0" > for VLAN in $VLANS > do > vconfig add $TRUNKINT $VLAN > brctl add br$VLAN > brctl addif br$VLAN $TRUNKINT.$VLAN > ifconfig $TRUNKINT.$VLAN up > ifconfig br$VLAN up > done > > I have done this with Xen on 5.5, 5.6 and 5.7... but it should work for > KVM. If you create the standard bridge interface br0 using just bond0 > that will get you a trunk on whatever the native vlan is for that trunk. > > Tait > > > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt >