Running CentOS 5.4 x64. Have successfully bridged eth2 with br2 by following the instructions here: http://wiki.libvirt.org/page/Networking (under the RHEL section) Have been running several KVM VMs successfully via this bridge. I am now trying to bridge additional interfaces by using the same routine. Each bridge is named to correspond with the ethX device its bridged with. Example of ifcfg-eth0 script: DEVICE=eth0 HWADDR=00:16:76:D6:C9:45 ONBOOT=yes BRIDGE=br0 then of ifcfg-br0 script: DEVICE=br0 TYPE=Bridge BOOTPROTO=dhcp ONBOOT=yes DELAY=0 This is repeated 3 times for eth0-eth2 and br0-br2. I've read somewhere that STP needs to be enabled when using multiple bridges. I've tried adding STP=on to the ifcfg-brX scripts but with the same result. Yes, brctl shows that STP is on. The original bridge eth2-br2 continues to work but I can't get any traffic across any other bridge. Either by dhcp or static ips. Is multiple bridges a possibility? Previous to moving to KVM I was running Xen Server on the same hardware. I am just trying to recreate the network setup I had. I believe Xen Server runs on top of a linux platform so such a thing should be possible. Thanks, Jacob -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20100109/f65823a6/attachment-0004.html>