matty: tnx for the link, but I dont understand what Ip adress i need to put in iface bond0 inet static
my interface file looks :
iface lo inet loopback
iface eth0 inet static
iface eth1 inet static
eth0 its connected to linksysrouter (ISP 1 )
eth1 its connected to linksysrouter 2 ( ISP 2)
Do i need special switch or router to make this work?