Channel bonding in RHEL6

achoos13 · 02-05-2012, 11:59 PM

We have 2 NIC cards and we need to configure channel bonding. We have configured etho,eth1 and bond0 as mentioned in Deployment guide. Issue is after restarting "Network" only bond0 is comming up. eth0 and eth1 remains down.
I think the issue is with the bonding driver. But not able to find the error

acid_kewpie · 02-06-2012, 02:19 AM

can you show us the config files please? We can't help without some useful information to work on.

achoos13 · 02-06-2012, 02:56 AM

Have configured bonding.conf in the /etc/modprobe.d/ directory with entry

alias bond0 bonding

Other files are ifcfg-eth0,ifcfg-eth1,ifcfg-bond0

acid_kewpie · 02-06-2012, 03:18 AM

Well I'd wipe NetworkManager from the server, removing the NM_MANAGED options for a start. TBH, I've no idea if they will stop the NIC's loading, but it would think it likely.

achoos13 · 02-06-2012, 05:17 AM

I have tried that but its not working.

grim76 · 02-06-2012, 07:40 PM

Do the nics actually come up and work if you don't bond them?

achoos13 · 02-06-2012, 10:10 PM

grim76 i configured the ifcfg-bond0...what else to be done?

tsumaru · 02-07-2012, 05:58 AM

From my experience with bonding (albeit on ubuntu) the interfaces that are being bonded dont nessecerily need to be up.

Do your eth0 and eth1 interfaces _NEED_ an IP address or do you want them to share the same "virtual" one?

achoos13 · 02-07-2012, 06:04 AM

IN RHEL we need both NIC cards up but not assigning any ip address individually. IP is assigned to bond0 alone. Now the scenario is like when is use the commands

ifconfig bond0 ipaddr
ifenslave bond0 eth0 eth1

it works fine but its a temporary solution. because when we restart the network service only bond0 is coming up

tsumaru · 02-07-2012, 06:08 AM

it might be a long shot but is your network manager not expecting the two interfaces to have an IP address? Maybe assign them an IP in a different subnet each?

Also check permissions on the script files.

grim76 · 02-07-2012, 07:15 AM

Your config files look right the only thing that I see is a nitpick is BONDING_opts should be BONDING_OPTS for sake of uniformity. Unless there is something else that is keeping things from working.

Typically we either do mode 4, or mode 1 for our bonds here so I am not as familiar with mode 0.

achoos13 · 02-08-2012, 02:20 AM

Everything working fine when i removed th HWADDR entry from eth0 and eth1 config file...thank you for the support.

rhbegin · 02-09-2012, 02:57 PM

Quote:

Originally Posted by achoos13

Everything working fine when i removed th HWADDR entry from eth0 and eth1 config file...thank you for the support.

Yip, since it is bonded it will not work with this entry.