Comments on: IP Bonding or Teaming in Linux – RHEL 5

By: Ahmed

Ahmed — Sun, 13 Mar 2011 10:03:58 +0000

]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.4.0 (October 7, 2008)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth2 (primary_reselect always)
Currently Active Slave: eth2
MII Status: up
MII Polling Interval (ms): 0
Up Delay (ms): 0
Down Delay (ms): 0
ARP Polling Interval (ms): 200
ARP IP target/s (n.n.n.n form):

Slave Interface: eth2
MII Status: up
Link Failure Count: 13087
Permanent HW addr: 68:b5:99:c5:dd:28

Slave Interface: eth3
MII Status: up
Link Failure Count: 1213
Permanent HW addr: 68:b5:99:c5:dd:2a

By: Ahmed

Ahmed — Sun, 13 Mar 2011 09:40:53 +0000

2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

Red Hat Enterprise Linux Server release 5.5 (Tikanga)

I did not copy but I checked and hardware address is different.

By: Rosario

Rosario — Sun, 13 Mar 2011 08:48:06 +0000

@Ahmed, What version of redhat are you using?
1. Double check if the hardware addresses in the files ifcfg-eth1 and /ifcfg-eth0? Normally when copying people forget to change the hardware addresses.

2. Check the bug fix below
https://bugzilla.redhat.com/show_bug.cgi?id=483034

Hope it helps Let me know.

By: Ahmed

Ahmed — Sun, 13 Mar 2011 06:46:35 +0000

I keep on getting the following messages (in /var/log/messages) after bonding two interfaces. What could be the reason?

bonding: bond0: link status definitely down for interface eth2, disabling it
Mar 13 11:52:49 dr102 kernel: bonding: bond0: making interface eth3 the new active one.
Mar 13 11:52:49 dr102 kernel: bonding: bond0: link status definitely up for interface eth2.
Mar 13 11:52:49 dr102 kernel: bonding: bond0: making interface eth2 the new active one.
Mar 13 11:52:50 dr102 kernel: bonding: bond0: link status definitely down for interface eth2, disabling it
Mar 13 11:52:50 dr102 kernel: bonding: bond0: making interface eth3 the new active one.
Mar 13 11:52:50 dr102 kernel: bonding: bond0: link status definitely up for interface eth2.
Mar 13 11:52:50 dr102 kernel: bonding: bond0: making interface eth2 the new active one.
Mar 13 11:52:51 dr102 kernel: bonding: bond0: link status definitely down for interface eth2, disabling it
Mar 13 11:52:51 dr102 kernel: bonding: bond0: making interface eth3 the new active one.
Mar 13 11:52:51 dr102 kernel: bonding: bond0: link status definitely up for interface eth2.