Try running a routing protocol and redundancy will be automatic even
with RIP and you can have two different addresses

Simon

On Tue, 2002-10-08 at 00:08, Edwin Fung wrote:
> Hi Nathalie,
> 
> It is OK to use the same ethernet address on both cards.  However, you 
> don't want them (i.e. the 2 ethernet cards) to be up (or active) at the 
> same time, since that would confuse whoever on your machine is using the 
> network about which network interface (should one use eth0 or eth1?).  Make 
> sure that you only have one ethernet card to be in the "up" state.  You can 
> use the ifconfig command to set a network interface to be either "up" or 
> "down".  You can accomplish the same by setting the interface "active" or 
> "inactive" by using the GUI "Network Configuration" (Gnome -> Programs-> 
> System -> Network Configuration).
> 
> Suppose you have eth0 "up" but eth1 "down".  If eth0 does indeed fail, you 
> simply bring eth0 down, and then bring eth1 up, again using the ifconfig 
> command or the "Network Configuration" GUI.  This is not "automatic", but I 
> think it should work well enough in most cases.  If you're worry about the 
> network card going down during the off-hours (evenings, weekends) then 
> write a cron job to periodically check the active network interface (e.g. 
> if you can ping some known computer in your network), and if the network is 
> not responding, then use ifconfig to switch network cards.
> 
> ... Edwin
> 
> At 09:21 AM 10/3/02 +0200, you wrote:
> >Hello all,
> >
> >I have a RH7.1 box with 2 ethernet cards.
> >I need to implement redundancy on the network: in case one of the eth 
> >cards fails, the second will automatically replace it with the same IP (No 
> >DNS redundancy).
> >
> >Is it sufficient to give both cards the same IP address?
> >
> >Thanks for your help.
> >
> >Regards
> >
> >Nathalie
> >
> >
> >
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