topic Re: Bonding in rhel in Operating System - Linux

Bonding in rhel

AVV — Mon, 21 Jun 2010 10:46:08 GMT

Hello,

I am having a blade server with two nic cards and I tried to bonding of those and succeeded. But the mode i wanted is active/passive, right now it seems to be active/active (Bonding Mode: load balancing (round-robin)). Can someone help me in this.

RHEL 5.3 64 Bit.

Re: Bonding in rhel

Alexander Chuzhoy — Mon, 21 Jun 2010 11:25:49 GMT

Have you added the following to /etc/modprobe.conf:
options bonding miimon=100 mode=active-backup

Re: Bonding in rhel

Thomas Callahan — Mon, 21 Jun 2010 12:02:45 GMT

You need to set the options in /etc/modprobe.conf as stated above.

Note that if you have more than 1 bonding device, you need to also should set "options bonding max_bonds=x" where x is the number of bonding devices you want to use. mode=1 will set active/passive

Re: Bonding in rhel

Tim Nelson — Mon, 21 Jun 2010 17:23:06 GMT

I had issues with bonding reverting to round-robin for a still unknown reason.

if you think you are set up correctly and /proc/net/bonding/bond0 says bonding mode is active-backup, but it still uses round-robin, then use all the options listed below.

options bonding mode=1 miimon=100 downdelay=200 updelay=200 max_bonds=1 primary=eth0

Please post your experience.

Re: Bonding in rhel

Gerardo Arceri — Mon, 21 Jun 2010 17:42:03 GMT

For RHEL 5.3 the right way of settign bonding options is by doing it on the /etc/sysconfig/network-scripts/ifcfg-bondX, you should add a line like this one to get an active-backup configuration
BONDING_OPTS="mode=1 miimon=100 primary=ethX"

For moreinfo refer to:
kbase.redhat.com/faq/docs/DOC-9708

No need to specify the settings on /etc/modprobe.conf

Re: Bonding in rhel

AVV — Tue, 22 Jun 2010 05:21:36 GMT

mode=1 setting in /etc/modprobe.conf works well.Thx