Bonding

Install packages

First install the ifenslave-2.6 package, necessary to enable bonding:

# apt-get install ifenslave-2.6

Config file for Lenny

When you use Lenny, you have to modify /etc/network/interfaces only.

auto bond0

iface bond0 inet static
   address 10.31.1.5
   netmask 255.255.255.0
   network 10.31.1.0
   gateway 10.31.1.254
   slaves eth0 eth1
   bond_mode active-backup
   bond_miimon 100
   bond_downdelay 200
   bond_updelay 200

For more detail, see /usr/share/doc/ifenslave-2.6/README.Debian.