[CentOS] broadcom 802.3ad

[Gordon McLellan]

Doh! That was easy ... I had just been reading "old" documentation, I
guess from the time before the bonding driver supported 802.3ad
natively?

I've setup the files as per the rhel4 example, and I'm receiving an
error about speed and duplex. Although both nics are connected, and
the machine answers to the bond0 ip, there is no link aggregation
indicated by the switch. The NICs are connected to an HP Procurve
1800.  I have LACP turned on for the ports the nics are connected to.
The switch indicates the protocol is enabled for those ports, but the
ports are not listed as an aggregation group.

from /var/log/messages

Feb  2 13:23:12 vmhost ifup: Enslaving eth0 to bond0
Feb  2 13:23:13 vmhost kernel: bnx2: eth0: using MSI
Feb  2 13:23:13 vmhost kernel: bonding: Warning: failed to get
speed/duplex from eth0, speed forced to 100Mbps, duplex forced to
Full.
Feb  2 13:23:13 vmhost kernel: bonding: bond0: enslaving eth0 as an
active interface with an up link.
Feb  2 13:23:13 vmhost ifup: Cannot set new settings: Invalid argument
Feb  2 13:23:13 vmhost ifup:   not setting speed
Feb  2 13:23:13 vmhost ifup:   not setting duplex
Feb  2 13:23:13 vmhost ifup:   not setting autoneg
Feb  2 13:23:13 vmhost ifup: Enslaving eth1 to bond0
Feb  2 13:23:13 vmhost kernel: bnx2: eth1: using MSI
Feb  2 13:23:13 vmhost kernel: bonding: Warning: failed to get
speed/duplex from eth1, speed forced to 100Mbps, duplex forced to
Full.
Feb  2 13:23:13 vmhost kernel: bonding: bond0: enslaving eth1 as an
active interface with an up link.
Feb  2 13:23:13 vmhost ifup: Cannot set new settings: Invalid argument
Feb  2 13:23:13 vmhost ifup:   not setting speed
Feb  2 13:23:13 vmhost ifup:   not setting duplex
Feb  2 13:23:13 vmhost ifup:   not setting autoneg
Feb  2 13:23:13 vmhost network: Bringing up interface bond0:  succeeded
Feb  2 13:23:15 vmhost kernel: bnx2: eth0 NIC Link is Up, 1000 Mbps full duplex
Feb  2 13:23:15 vmhost kernel: bnx2: eth1 NIC Link is Up, 1000 Mbps full duplex

I'm not sure if it matters, or if the error itself is an error?

here's the config for eth1, similar to eth0

[root at vmhost network-scripts]# cat ifcfg-eth1
DEVICE=eth1
BOOTPROTO=none
HWADDR=00:18:8B:4E:A2:B1
ONBOOT=yes
TYPE=Ethernet
MASTER=bond0
SLAVE=yes
# added this line following suggested solution for speed/duplex error
ETHTOOL_OPTS="speed 1000 duplex full autoneg off"

and config for bond0
[root at vmhost network-scripts]# cat ifcfg-bond0
DEVICE=bond0
IPADDR=192.168.1.6
NETMASK=255.255.255.0
NETWORK=192.168.1.0
BROADCAST=192.168.1.255
GATEWAY=192.168.1.1
ONBOOT=yes
BOOTPROTO=none
USERCTL=no

and modprobe.conf
[root at vmhost network-scripts]# cat /etc/modprobe.conf
alias eth0 bnx2
alias eth1 bnx2
alias eth2 e1000
alias eth3 e1000
alias scsi_hostadapter megaraid_sas
alias usb-controller ehci-hcd
alias usb-controller1 uhci-hcd

# modes:
# mode=0 (Balance Round Robin)
# mode=1 (Active backup)
# mode=2 (Balance XOR)
# mode=3 (Broadcast)
# mode=4 (802.3ad)
# mode=5 (Balance TLB)
# mode=6 (Balance ALB)

alias bond0 bonding
options bond0 -o bond0 mode=4 miimon=500

Gordon