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network bonding questions
I try to configure bonding in RHEL 4, I google a lot and found different configuration/example :
Example 1:
alias bond0 bonding
options bond0 -o bond0 mode=balance-rr miimon=100
alias bond1 bonding
options bond1 -o bond1 mode=balance-alb miimon=50
Example 2:
alias bond0 bonding
options bond0 mode=0 miimon=100
alias bond1 bonding
options bond1 -o bonding1 mode=0 miimon=200
Example 3:
alias bond0 bonding
options bond0 mode=x,miimon=100,primary=eth0,etc.
alias bond1 bonding
options bond1 mode=x,miimon=100,primary=eth2,etc.
My question is :
1: when should we use bond1 -o ? what does this syntax -o mean?
2: what is the different between bond1 -o bonding1 and bond1 -o bond1 ? when should we use which?
3: In example 3, is the configuration wrong? example 3 is from redhat website itself.
4: I have have 4 interfaces , i try all the examples above and it seems to work, i dont see any different but regardless which example i use, when i do a lsmod | grep bond , it only shows bonding . Is it suppose to show 2 bondings?
attached is my configuration :
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[root@rhel4 ~]# more /etc/modprobe.conf
alias eth0 vmnics
alias scsi_hostadapter mptbase
alias scsi_hostadapter1 mptscsih
# Added by VMware Tools
install vmnics /sbin/modprobe vmxnet; /sbin/modprobe pcnet32; /bin/true
alias char-major-14 sb
options sb io=0x220 irq=5 dma=1 dma16=5 mpu_io=0x330
install snd-ens1371 /sbin/modprobe --ignore-install snd-ens1371 && /usr/sbin/als
actl restore >/dev/null 2>&1 || :
#alias eth0 pcnet32
alias eth3 pcnet32
alias eth1 pcnet32
alias eth2 pcnet32
install bond0 /sbin/modprobe -a eth1 eth2 && /sbin/modprobe bonding
alias bond0 bonding
options bond0 primary=eth0 miimon=100 mode=1 max_bonds=4
install bond1 /sbin/modprobe -a eth0 eth3 && /sbin/modprobe bonding
alias bond1 bonding
options bond1 primary=eth0 miimon=100 mode=1 max_bonds=4
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[root@rhel4 ~]# more /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v2.6.1 (October 29, 2004)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth0
Currently Active Slave: eth1
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth1
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29:9d:7d:95
Slave Interface: eth2
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29:9d:7d:9f
------------------------------------------------------------
[root@rhel4 ~]# more /proc/net/bonding/bond1
Ethernet Channel Bonding Driver: v2.6.1 (October 29, 2004)
Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth0
Currently Active Slave: eth0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Slave Interface: eth0
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29:9d:7d:8b
Slave Interface: eth3
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:0c:29:9d:7d:a9
---------------------------------------------------------
[root@rhel4 ~]# lsmod | grep bond
bonding 58984 0
thanks.
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