On May 13, 2012, at 2:27 PM, Mikael Fridh wrote: > On Sun, May 13, 2012 at 5:45 PM, aurfalien <aurfalien at gmail.com> 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 > > Note I'm speaking bonding only and not bridging here: > > These days bonding is supposed to be done in the network-script files, > not modprobe.conf: > # ifcfg-bond0: > DEVICE=bond0 > IPADDR=10.0.0.6 > NETMASK=255.255.255.0 > #NETWORK= > #BROADCAST= > ONBOOT=yes > BOOTPROTO=none > USERCTL=no > BONDING_OPTS="mode=active-backup primary=em1 arp_interval=2000 > arp_ip_target=10.0.0.1 arp_validate=all num_grat_arp=12 > primary_reselect=failure" > > Adjust accordingly. Hi Mikael, I didn't do them in the .conf as its depreciated in Centos 6. However I did move the miimon etc... lines to my network scripts file and still no dice. I didn't try your suggestions as it looks too much like a patch, not very clean like it used to be in version 5. So I basically had done what you suggested but w/o the arp lines. I'm in no hurry for this although I will keep your suggestions in my notes as I may have an up coming Centos 6 server that absolutely needs binding. Thanks for the reply. - aurf