FC1 multiple ethernet interface issue
David Benigni
dbenigni at lutron.com
Tue Feb 15 19:32:31 UTC 2005
> (personally I prefer the netstat -rn output, I guess that makes me
old
> school. :) )
trust me, I'm the same way. I still can't get my fingers to type dig
instead of nslookup.
> At this point the problem is not at the point you shutdown eth1. It
is
> when you bring eth1 up and all your routes get pushed out that
> interface. It is that point that the system must be looking at the
> addressing you are using and says the new interface has the same
subnet
> as the old one so all traffic can go this way. Depending on the
actual
> IP address on the interface it may decide that based on the highest
or
> lowest IP address. Not sure about that but that appears to be what
is
> happening.
> So if you think this has been working with the two interfaces
splitting
> traffic, it probably has not. Look at the packet stats ifconfig
gives
> you for each interface. Setup some file transfers or something to
each
> IP address for testing. I suspect you will see all outbound traffic
on
> eth1 and nothing on eth0, even for local LAN traffic.
I see what you are saying. So, I wonder if using GATEWAYDEV=eth0 buys
me anything when tearing down eth1.
In the past I have had a server with two nics (different subnets) and
split traffic between both. Each had a different default gw though.
This example is more insteresting because the default gw are the same.
Thanks,
Dave
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