IP Networking

Hello,

I am trying to set up Channel Bonding on a RHEL6 Virtual Box VM. I have 2 ethernet cards on the machine which are set up in Internal Network mode. I followed all the steps exactly as mentioned in the RHEL6 deployment Guide, but for some reason i think results are not correct. Here are my doubts:

1. When i reboot the system the Bond0 interface is up and has the IP assigned and eth1 and eth2 cards are acting as slaves, which is expected but as soon as i restart the network service the Bond0 interface does not come up.

2. Second question which i have is when the Bond0 is up and has IP assigned to it, i ping from my other VM to the IP and it responds. Now when i manually bring down both the physical interfaces eth1 and eth2, even then also i am getting ping replies. I am wondering when both the physical interfaces are down how can Bonded interface respond.

Please correct me wherever i am missing anything. Or if i am doing this wrong way please guide me in doing it correctly. I am attaching the screen shots and config files for my system.

Network Interfaces config files

Code:

[root@prod ~]# cat /etc/sysconfig/network-scripts-ifcfg-bond0
DEVICE="bond0"
ONBOOT="yes"
BOOTPROTO="none"
IPADDR="192.168.10.1"
USERCTL="no"
BONDING_OPTS="mode=1 miimon=100"

[root@prod ~]# cat /etc/sysconfig/network-scripts-ifcfg-eth1
DEVICE="eth1"
ONBOOT="yes"
BOOTPROTO="none"
MASTER="bond0"
SLAVE="yes"
USERCTL="no"

[root@prod ~]# cat /etc/sysconfig/network-scripts-ifcfg-eth2
DEVICE="eth2"
ONBOOT="yes"
BOOTPROTO="none"
MASTER="bond0"
SLAVE="yes"
USERCTL="no"

Contents of /etc/modprobe.d/bonding.conf

Code:

[root@prod ~]# cat /etc/modprobe.d/bonding.conf
alias bond0 bonding

I have also attached the screen shots of various outputs

i have some more options in my bond0 config...

Code:

DEVICE=bond0
IPADDR=192.168.10.1
NETMASK=255.255.255.0
BOOTPROTO=none
USERCTL=no
TYPE=Ethernet
ONBOOT=yes
IPV6INIT=no
BONDING_OPTS="mode=active-backup miimon=100 downdelay=5000 updelay=5000"

the physical interface files look much like yours...

Hi,

Thanks for the reply but i think would not be the reason for issue ? What do you think, is it working fine in your case ?

yeah, my bond is working without any problems...

Could you please share your configuration for interfaces, modules file etc. I mean what all you did and does it work if you bring your both physical interfaces down.

It would be great if you could share some outputs aslo.

Thanks.

i don't have access to the machines anymore... i installed them at customer datacenter... the output of the bond config is from my documentation with some default ip...

It is perhaps a silly question but have ran modprobe bonding ?