On May 13, 2012, at 2:43 PM, Digimer wrote: > 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. WOW, thanks Digi! Will def read it. I've another server to test and roll out soon and want to revisit bond+bridge in Centos 6. This one unfortunately needs to be prime time tomorrow and I don't have enough resources (ie; brain power) to try the bond endeavor. - aurf