Hi!

I have a question regarding using multiple network adapters in LINUX.

I want to take all data that comes in on eth0 and route that data out over eth1 and eth2.
The SAME data over both interfaces.

How can I accomplish this?
We have tried Iptables, TC, route etc and even looked at multilink PPP and multipath routing but all we can
get is some kind of balanxing that sends half of the data over one interface and the other half over another.

I want to route the same data out over two separate interfaces, for reduncandy.

Any tips on how to do this?

Many many thanks


Henrik

What you are doing sounds like a bad idea to me. If you start sending duplicate packets your network will become a very confusing place.

The same thing you want is frequently used for another purpose though: monitoring. Usually you would configure this on the level of your network hardware, but I guess it can be done on a linux box too. Maybe with a network bridge without any of the learning features enabled?

An internet search for "port mirroring" or "port monitoring" on linux might give you some more clues.

EDIT:another option that migh be even easier: a network tap.

Hi,
Read /usr/src/linux/Documentation/networking/bonding.txt, maybe it was help. There is also ifenslave program.

The problem is now solved, thanks for the support everyone!