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Old 11-19-2004, 02:49 AM   #1
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Red Hat 7.3 and multiple gateways on multiple interfaces

I'm sorry but i've looked everywhere for an answer, and everything that I've tried has not seemed to work.

I have a Red Hat 7.3 box with two interfaces connected to two different ISPs. How do I properly configure the two gateways so that I can access this box via either ISP from the internet? Let's say I have eth0 at with a gateway of and eth1 at with a gateway of I've tried adding a second "GATEWAY=" line to my /etc/sysconfig/network and I've tried configuring one of the gateways in the /etc/sysconfig/network (by way of "GATEWAY=") and configuring the other one by adding "route add default gw dev eth0" to my rc.local. Neither has worked.

Please help!
Old 11-19-2004, 05:40 AM   #2
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Location: istanbul
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in your net configuration, linux uses only one net device as default gateway. so only one NIC is used to reach internet. so it doesnt mean anything to have 2 default gateways.

if u want to use both device at that time to reach internet, u may want to read

good luck.
Old 11-19-2004, 05:01 PM   #3
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This seems to have worked beautifully. Thank you for your help. Now does anyone have any idea how to make this work on a Debian woody box? I installed the iproute package, but I get errors when i run the same set of commands that work under Red Hat 7.3. I get "File Exists" and "Bad Argument" errors? Anyone have any ideas?


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