hi everyone

i configured channel bonding on centos6.3 64bit. but i have some problem . for test i unplug eth0 and see the ping output . everything was good but after plug eth0 after 8 request timeout or delay network connected. i dont know why. please note to my configuration:


[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
USERCTL=no
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no
IPADDR=10.1.30.53
NETMASK=255.255.255.0
GATEWAY=10.1.30.3
DNS1=10.1.10.11
DNS2=10.1.10.12
IPV6INIT=no
BONDING_OPTS="mode=5 miimon=50"


________
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="none"
HWADDR="10:ee:74:3:"
NM_CONTROLLED="no"
ONBOOT="yes"
#TYPE="Ethernet"
#UUID="01111-a27e-4cd6-qqqq-b908eb"
USERCTL=no
MASTER=bond0
SLAVE=yes


_________
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE="eth1"
BOOTPROTO="none"
HWADDR="10:1F:74:ddd"
NM_CONTROLLED="no"
ONBOOT="yes"
#TYPE="Ethernet"
#UUID="83eeee7084a-8f08-40dd-9a1a-69e6c9cccccc"
USERCTL=no
MASTER=bond0
SLAVE=yes

_________
[root@localhost ~]# cat /etc/modprobe.d/bonding.conf
alias bond0 bonding
________
[root@localhost ~]# cat /etc/modprobe.d/bonding.conf
alias bond0 bonding
[root@localhost ~]# modprobe --list |grep bonding
kernel/drivers/net/bonding/bonding.ko
[root@localhost ~]# modprobe --list |grep mii
kernel/drivers/net/mii.ko

___________
[root@localhost ~]# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009)

Bonding Mode: transmit load balancing
Primary Slave: None
Currently Active Slave: eth0
MII Status: up
MII Polling Interval (ms): 50
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eth0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 10:1f:74:
Slave queue ID: 0

Slave Interface: eth1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 10:1f:745
Slave queue ID: 0
____________
[root@localhost ~]# cat /sys/class/net/bond0/bonding/miimon
50
[root@localhost ~]# cat /sys/class/net/bond0/bonding/arp_validate
none 0
[root@localhost ~]# cat /sys/class/net/bond0/bonding/arp_interval
0
[root@localhost ~]# cat /sys/class/net/bond0/bonding/primary
[root@localhost ~]# cat /sys/class/net/bond0/bonding/slaves
eth0 eth1
[root@localhost ~]# cat /sys/class/net/bond0/bonding/updelay
0
[root@localhost ~]# cat /sys/class/net/bond0/bonding/mode
balance-tlb 5
[root@localhost ~]# cat /sys/class/net/bond0/bonding/active_slave
eth0
[root@localhost ~]# cat /sys/class/net/bond0/bonding/ad_aggregator
[root@localhost ~]# cat /sys/class/net/bond0/bonding/arp_ip_target
[root@localhost ~]# cat /sys/class/net/bond0/bonding/mii_status
up

You might want to try adding an updelay to your configuration. That way you can delay the activation of the failed device until it is completely up. Keep in mind that updelay should be a multiple of your miimon value.

1 members found this post helpful.

thanks for your reply. but how can i find updelay number? what number is better?
may be this problem related to switch? what parameter should set on switch ports?

http://www.kernel.org/doc/Documentat...ng/bonding.txt

Updelay is documented at the above location.

hi again
my problem solved
after enabling portfast on switch ports my problem solved.