There are plenty of HOWTOs on so called NIC teaming or NIC bonding for Debian, but of the ones I’ve seen, they’ve all missed some rather important bits.
Below is the method I personally found to work reliably:
apt-get install ifenslave echo "bonding" >> /etc/modules modprobe bonding ifdown eth0 |
edit /etc/network/interfaces, changing “eth0” (or your configured NIC) to “bond0”, and replacing “allow-hotplug” with “auto”. The following sed line give you this automagically:
sed 's/eth0/bond0/;s/allow-hotplug bond0/auto bond0/' </etc/network/interfaces |
Tell ifup and ifdown to add/remove devices to bond0 lines:
echo " up /sbin/ifenslave bond0 eth0 eth1" >> /etc/network/interfaces echo " down /sbin/ifenslave -d bond0 eth0 eth1" >> /etc/network/interfaces ifup bond0; |
And you’re done!
You can add all the options for the bonding module to the line in /etc/modules, like:
echo "bonding mode=1 miimon=250 primary=eth0" >> /etc/modules; |
Details of all options available at linuxfoundation.org