From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Wouters paul@xtdnet.nl Date: Tue, 16 Jan 2001 10:13:40 +0000 Subject: [LARTC] Advanced routing question. Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lartc@vger.kernel.org 
On Tue, 16 Jan 2001, Arthur van Leeuwen wrote:

> > 2>	Setup a fail over method so that if either internet connection were
> > to fail it would start routing all outbound traffic over that link.

> Yes. Linux using Advanced Routing can be used to solve these problems, but
> for problem 2: at the IP level there is no way to figure out wether or not a
> link is down. Ofcourse, you can approximate problem 2, but you have no
> guarantees that the problem lies with the link and not with the servers you
> test your connectivity against, or the infrastructure to those servers
> beyond your direct link.

What happens if you use the bonding driver and one of the two parts of the
link goes down? Is that transparent?
(Ofcourse this is not a solution you want if your fallback is some expensive
slow line, but if the lines are equal in costs (or it doesn' cost more at all
to have the fallback 'online' all the time) this might be a solution.

Paul