I’m using a CentOS 6 box for HA NFS storage behind a cluster of VMware ESXi boxes. I want to make sure those ESXi hosts aren’t fighting over a single 1Gbps Ethernet interface. Bonding 6 interfaces (3 x Intel Pro Dual-NICs) should do the trick…
On 3750x:
- Configure switch ports (for me, that’s gi1/0/25 – 30
interface range gi1/0/25-30
switchport mode access
spanning-tree portfast
channel-group 1 mode active
channel-protocol lacp
no shut
end
copy run start
On CentOS:
- Configure alias for kernel module
Create /etc/modprobe.d/bonding.conf with the following contents:
alias bond0 bonding - Create bond0 interface config
Create /etc/sysconfig/network-scripts/ifcfg-bond0 with the following contents:
DEVICE=bond0
BONDING_OPTS="mode=4 miimon=500"
BOOTPROTO=none
ONBOOT=yes
NETWORK=192.168.0.0
NETMASK=255.255.255.0
IPADDR=192.168.0.15
USERCTL=no - Modify the configuration for the interfaces you want to bond. Keep the top 3 lines in each configuration file, which should be:
DEVICE=XXXX
HWADDR=XX:XX:XX:XX:XX:XX
TYPE=EthernetReplace everything below those 3 lines with:
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=none
MASTER=bond0
SLAVE=yes
USERCTL=no - Reboot
Done and done…