Linux and Multiple NICs with Multiple Default Gateways

[Scott Smith <ssmith@siu.edu>]

I've used Linux with multiple NICs in the past, however only as a FW 
w/NAT or a Server with inside and outside IPs.

Now I have my first instance where I have a machine with multiple NICs, 
eth0 and eth1, and I want to configure both for Internet facing IPs.  
I.e. Load Balancing.  However, my current issue is that Linux doesn't 
like multiple Default Gateways.  If I configure it in 
/etc/sysconfig/network-scripts/ifcfg-eth0 and eth1 with the GATEWAY= 
command, eth1 over writes eth0's DG, and therefore only eth1 has the 
ability to get off the local LAN.

I've tried the 'route' command as well, and have the same results.  I 
can see both DG's with the route statement, but only the last one 
entered works.

How do I configure the machine so that Both NICs can be seen externally?
-- 
Scott Smith
Network Engineering Services
Southern Illinois University Carbondale
ssmith@siu.edu

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