On 05/13/2012 11:45 AM, aurfalien wrote: > Hi all, > > Read many posts on the subject. > > Using 802.3ad. > > Few problems; > Cannot ping some hosts on the network, they are all up. > Cannot resolve via DNS which is one of the hosts that I cannot ping, internal nor external DNS hosts. > Unplugging the NICS and plugging them back in will then not allow pining if the default d=gateway. > > When cold booting it somewhat works, some hosts are pingable while others are not. > > When restarting the network service via /etc/init.d/network, nothing is pingable. > > Here are my configs; > > ifcfg-bond0 > DEVICE=bond0 > USERCTL=no > BOOTPROTO=none > ONBOOT=yes > IPADDR=10.0.0.10 > NETMASK=255.255.0.0 > NETWORK=10.0.0.0 > TYPE=Unknown > IPV6INIT=no > > ifcfg-eth0 > DEVICE=eth0 > BOOTPROTO=none > ONBOOT=yes > MASTER=bond0 > SLAVE=yes > USERCTL=no > > ifcfg-eth1 > DEVICE=eth1 > BOOTPROTO=none > ONBOOT=yes > MASTER=bond0 > SLAVE=yes > USERCTL=no > > /etc/modprob.d/bonding.conf > alias bond0 bonding > options bond0 mode=5 miimon=100 > > Bonding worked great in Centos 5.x, not so well for me in Centos 6.2. > > My goal is to get this working under bridging for KVM, I can only imagine the nightmare seeing I can't get a simple bond to work! > > Any guidance is golden. > > - aurf I run KVM VMs, built and managed using libvirt, through bonded interfaces all the time. I don't have a specific tutorial for this, but I cover all the steps to build a mode=1 (Active/Passive) bond and then routing VMs through it as part of a larger tutorial. Here are the specific sections I think will help you; https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial#Network This section covers building 3 bonds, which you only need one of. In the tutorial, you only need to care about the "IFN" bond and bridge (bond2 + vbr2). https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial#Provisioning_vm0001-dev This covers all the steps used in the 'virt-install' call to provision the VMs, which includes telling them to use the bridge. Hope that helps. -- Digimer Papers and Projects: https://alteeve.com